[platform/upstream/gcc.git] / gcc / ChangeLog

2021-09-15  David Edelsohn  <dje.gcc@gmail.com>

        * config/rs6000/rs6000.c (rs6000_xcoff_encode_section_info):
        Proceed if no symbol summary or the symbol alias flag is false.

2021-09-15  Jakub Jelinek  <jakub@redhat.com>

        PR c++/88578
        PR c++/102295
        * varasm.c (output_constructor_regular_field): Instead of assertion
        that array_size_for_constructor result is equal to size of
        TREE_TYPE (local->val) in bytes, assert that the type size is greater
        or equal to array_size_for_constructor result and use type size as
        fieldsize.

2021-09-15  Martin Liska  <mliska@suse.cz>

        PR target/102351
        * config/i386/vxworks.h: Use new macro TARGET_CPU_P.

2021-09-15  Martin Liska  <mliska@suse.cz>

        PR target/102349
        * config/rs6000/rs6000.c (rs6000_xcoff_encode_section_info):
        Check that we have a symbol summary for a symbol.

2021-09-15  Richard Biener  <rguenther@suse.de>

        PR target/102348
        * config/rs6000/lynx.h: Remove undef of PREFERRED_DEBUGGING_TYPE
        to inherit from elfos.h

2021-09-15  liuhongt  <hongtao.liu@intel.com>

        PR target/102327
        * config/i386/i386-expand.c
        (ix86_expand_vector_init_interleave): Use puncklwd to pack 2
        HFmodes.
        (ix86_expand_vector_set): Use blendw instead of pinsrw.
        * config/i386/i386.c (ix86_can_change_mode_class): Adjust for
        AVX512FP16 which supports 16bit vector load.
        * config/i386/sse.md (avx512bw_interleave_highv32hi<mask_name>):
        Rename to ..
        (avx512bw_interleave_high<mode><mask_name>): .. this, and
        extend to V32HFmode.
        (avx2_interleave_highv16hi<mask_name>): Rename to ..
        (avx2_interleave_high<mode><mask_name>): .. this, and extend
        to V16HFmode.
        (vec_interleave_highv8hi<mask_name>): Rename to ..
        (vec_interleave_high<mode><mask_name>): .. this, and extend to V8HFmode.
        (<mask_codefor>avx512bw_interleave_lowv32hi<mask_name>):
        Rename to ..
        (<mask_codefor>avx512bw_interleave_low<mode><mask_name>):
        this, and extend to V32HFmode.
        (avx2_interleave_lowv16hi<mask_name>): Rename to ..
        (avx2_interleave_low<mode><mask_name>): .. this, and extend to V16HFmode.
        (vec_interleave_lowv8hi<mask_name>): Rename to ..
        (vec_interleave_low<mode><mask_name>): .. this, and extend to V8HFmode.
        (sse4_1_pblendw): Rename to ..
        (sse4_1_pblend<blendsuf>): .. this, and extend to V8HFmode.
        (avx2_pblendph): New define_expand.
        (<sse2p4_1>_pinsr<ssemodesuffix>): Refactor, use
        sseintmodesuffix instead of ssemodesuffix.
        (blendsuf): New mode attr.

2021-09-15  Richard Biener  <rguenther@suse.de>

        * tree-vectorizer.h (dr_misalignment): Move out of line.
        (dr_target_alignment): New.
        (DR_TARGET_ALIGNMENT): Wrap dr_target_alignment.
        (set_dr_target_alignment): New.
        (SET_DR_TARGET_ALIGNMENT): Wrap set_dr_target_alignment.
        * tree-vect-data-refs.c (dr_misalignment): Compute and
        return the group members misalignment.
        (vect_compute_data_ref_alignment): Use SET_DR_TARGET_ALIGNMENT.
        (vect_analyze_data_refs_alignment): Compute alignment only
        for the first element of a DR group.
        (vect_slp_analyze_node_alignment): Likewise.

2021-09-15  Hongyu Wang  <hongyu.wang@intel.com>

        * config/i386/avx512fp16intrin.h: Adjust all builtin calls.
        * config/i386/avx512fp16vlintrin.h: Likewise.
        * config/i386/i386-builtin.def: Adjust builtin name and
        enumeration to match AVX512F style.

2021-09-15  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/102318
        * tree-vect-loop.c (vect_transform_cycle_phi): Revert
        previous change and do the mode conversion separately from
        the sign conversion.

2021-09-15  Hongtao Liu  <hongtao.liu@intel.com>
            Peter Cordes  <peter@cordes.ca>

        PR target/91103
        * config/i386/sse.md (extract_suf): Add V8SF/V8SI/V4DF/V4DI.
        (*vec_extract<mode><ssescalarmodelower>_valign): Output
        vextract{i,f}{32x4,64x2} instruction when byte_offset % 16 ==
        0.

2021-09-15  Richard Biener  <rguenther@suse.de>

        * config.gcc: Remove vax-*-openbsd* configuration.

2021-09-15  Richard Biener  <rguenther@suse.de>

        * config.gcc: Remove m68k-openbsd.

2021-09-15  Max Filippov  <jcmvbkbc@gmail.com>

        PR target/102336
        * config/xtensa/t-xtensa (TM_H): Add include/xtensa-config.h.

2021-09-14  Peter Bergner  <bergner@linux.ibm.com>

        * config/rs6000/mma.md (unspec): Delete UNSPEC_MMA_XXSETACCZ.
        (unspecv): Add UNSPECV_MMA_XXSETACCZ.
        (*mma_xxsetaccz): Delete.
        (mma_xxsetaccz): Change to define_insn.  Remove operand 1.
        Use UNSPECV_MMA_XXSETACCZ.  Update comment.
        * config/rs6000/rs6000.c (rs6000_rtx_costs): Use UNSPECV_MMA_XXSETACCZ.

2021-09-14  Iain Sandoe  <iain@sandoe.co.uk>

        * Makefile.in: Remove variables related to applying no-PIE
        to the exes on $build.
        * configure: Regenerate.
        * configure.ac: Remove configuration related to applying
        no-PIE to the exes on $build.

2021-09-14  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc.md (doloop_end): Add missing mode.
        (loop_end): Likewise.

2021-09-14  Jakub Jelinek  <jakub@redhat.com>

        * gimplify.c (goa_stabilize_expr): Add depth argument, propagate
        it to recursive calls, for depth above 7 just gimplify or return.
        Perform a test even for MODIFY_EXPR, ADDR_EXPR, COMPOUND_EXPR with
        __builtin_clear_padding and TARGET_EXPR.
        (gimplify_omp_atomic): Adjust goa_stabilize_expr callers.

2021-09-14  liuhongt  <hongtao.liu@intel.com>

        * config/i386/avx512fp16intrin.h (_mm_fpclass_sh_mask):
        New intrinsic.
        (_mm_mask_fpclass_sh_mask): Likewise.
        (_mm512_mask_fpclass_ph_mask): Likewise.
        (_mm512_fpclass_ph_mask): Likewise.
        (_mm_getexp_sh): Likewise.
        (_mm_mask_getexp_sh): Likewise.
        (_mm_maskz_getexp_sh): Likewise.
        (_mm512_getexp_ph): Likewise.
        (_mm512_mask_getexp_ph): Likewise.
        (_mm512_maskz_getexp_ph): Likewise.
        (_mm_getexp_round_sh): Likewise.
        (_mm_mask_getexp_round_sh): Likewise.
        (_mm_maskz_getexp_round_sh): Likewise.
        (_mm512_getexp_round_ph): Likewise.
        (_mm512_mask_getexp_round_ph): Likewise.
        (_mm512_maskz_getexp_round_ph): Likewise.
        (_mm_getmant_sh): Likewise.
        (_mm_mask_getmant_sh): Likewise.
        (_mm_maskz_getmant_sh): Likewise.
        (_mm512_getmant_ph): Likewise.
        (_mm512_mask_getmant_ph): Likewise.
        (_mm512_maskz_getmant_ph): Likewise.
        (_mm_getmant_round_sh): Likewise.
        (_mm_mask_getmant_round_sh): Likewise.
        (_mm_maskz_getmant_round_sh): Likewise.
        (_mm512_getmant_round_ph): Likewise.
        (_mm512_mask_getmant_round_ph): Likewise.
        (_mm512_maskz_getmant_round_ph): Likewise.
        * config/i386/avx512fp16vlintrin.h (_mm_mask_fpclass_ph_mask):
        New intrinsic.
        (_mm_fpclass_ph_mask): Likewise.
        (_mm256_mask_fpclass_ph_mask): Likewise.
        (_mm256_fpclass_ph_mask): Likewise.
        (_mm256_getexp_ph): Likewise.
        (_mm256_mask_getexp_ph): Likewise.
        (_mm256_maskz_getexp_ph): Likewise.
        (_mm_getexp_ph): Likewise.
        (_mm_mask_getexp_ph): Likewise.
        (_mm_maskz_getexp_ph): Likewise.
        (_mm256_getmant_ph): Likewise.
        (_mm256_mask_getmant_ph): Likewise.
        (_mm256_maskz_getmant_ph): Likewise.
        (_mm_getmant_ph): Likewise.
        (_mm_mask_getmant_ph): Likewise.
        (_mm_maskz_getmant_ph): Likewise.
        * config/i386/i386-builtin-types.def: Add corresponding builtin types.
        * config/i386/i386-builtin.def: Add corresponding new builtins.
        * config/i386/i386-expand.c
        (ix86_expand_args_builtin): Handle new builtin types.
        (ix86_expand_round_builtin): Ditto.
        * config/i386/sse.md (vecmemsuffix): Add HF vector modes.
        (<avx512>_getexp<mode><mask_name><round_saeonly_name>): Adjust
        to support HF vector modes.
        (avx512f_sgetexp<mode><mask_scalar_name><round_saeonly_scalar_name):
        Ditto.
        (avx512dq_fpclass<mode><mask_scalar_merge_name>): Ditto.
        (avx512dq_vmfpclass<mode><mask_scalar_merge_name>): Ditto.
        (<avx512>_getmant<mode><mask_name><round_saeonly_name>): Ditto.
        (avx512f_vgetmant<mode><mask_scalar_name><round_saeonly_scalar_name>):
        Ditto.

2021-09-14  liuhongt  <hongtao.liu@intel.com>

        * config/i386/avx512fp16intrin.h (_mm512_reduce_ph):
        New intrinsic.
        (_mm512_mask_reduce_ph): Likewise.
        (_mm512_maskz_reduce_ph): Likewise.
        (_mm512_reduce_round_ph): Likewise.
        (_mm512_mask_reduce_round_ph): Likewise.
        (_mm512_maskz_reduce_round_ph): Likewise.
        (_mm_reduce_sh): Likewise.
        (_mm_mask_reduce_sh): Likewise.
        (_mm_maskz_reduce_sh): Likewise.
        (_mm_reduce_round_sh): Likewise.
        (_mm_mask_reduce_round_sh): Likewise.
        (_mm_maskz_reduce_round_sh): Likewise.
        (_mm512_roundscale_ph): Likewise.
        (_mm512_mask_roundscale_ph): Likewise.
        (_mm512_maskz_roundscale_ph): Likewise.
        (_mm512_roundscale_round_ph): Likewise.
        (_mm512_mask_roundscale_round_ph): Likewise.
        (_mm512_maskz_roundscale_round_ph): Likewise.
        (_mm_roundscale_sh): Likewise.
        (_mm_mask_roundscale_sh): Likewise.
        (_mm_maskz_roundscale_sh): Likewise.
        (_mm_roundscale_round_sh): Likewise.
        (_mm_mask_roundscale_round_sh): Likewise.
        (_mm_maskz_roundscale_round_sh): Likewise.
        * config/i386/avx512fp16vlintrin.h: (_mm_reduce_ph):
        New intrinsic.
        (_mm_mask_reduce_ph): Likewise.
        (_mm_maskz_reduce_ph): Likewise.
        (_mm256_reduce_ph): Likewise.
        (_mm256_mask_reduce_ph): Likewise.
        (_mm256_maskz_reduce_ph): Likewise.
        (_mm_roundscale_ph): Likewise.
        (_mm_mask_roundscale_ph): Likewise.
        (_mm_maskz_roundscale_ph): Likewise.
        (_mm256_roundscale_ph): Likewise.
        (_mm256_mask_roundscale_ph): Likewise.
        (_mm256_maskz_roundscale_ph): Likewise.
        * config/i386/i386-builtin-types.def: Add corresponding builtin types.
        * config/i386/i386-builtin.def: Add corresponding new builtins.
        * config/i386/i386-expand.c
        (ix86_expand_args_builtin): Handle new builtin types.
        (ix86_expand_round_builtin): Ditto.
        * config/i386/sse.md (<mask_codefor>reducep<mode><mask_name>):
        Renamed to ...
        (<mask_codefor>reducep<mode><mask_name><round_saeonly_name>):
        ... this, and adjust for round operands.
        (reduces<mode><mask_scalar_name>): Likewise, with ...
        (reduces<mode><mask_scalar_name><round_saeonly_scalar_name):
        ... this.
        (<avx512>_rndscale<mode><mask_name><round_saeonly_name>):
        Adjust for HF vector modes.
        (avx512f_rndscale<mode><mask_scalar_name><round_saeonly_scalar_name>):
        Ditto.
        (*avx512f_rndscale<mode><round_saeonly_name>): Ditto.

2021-09-14  liuhongt  <hongtao.liu@intel.com>

        * config/i386/avx512fp16intrin.h: (_mm512_rcp_ph):
        New intrinsic.
        (_mm512_mask_rcp_ph): Likewise.
        (_mm512_maskz_rcp_ph): Likewise.
        (_mm_rcp_sh): Likewise.
        (_mm_mask_rcp_sh): Likewise.
        (_mm_maskz_rcp_sh): Likewise.
        (_mm512_scalef_ph): Likewise.
        (_mm512_mask_scalef_ph): Likewise.
        (_mm512_maskz_scalef_ph): Likewise.
        (_mm512_scalef_round_ph): Likewise.
        (_mm512_mask_scalef_round_ph): Likewise.
        (_mm512_maskz_scalef_round_ph): Likewise.
        (_mm_scalef_sh): Likewise.
        (_mm_mask_scalef_sh): Likewise.
        (_mm_maskz_scalef_sh): Likewise.
        (_mm_scalef_round_sh): Likewise.
        (_mm_mask_scalef_round_sh): Likewise.
        (_mm_maskz_scalef_round_sh): Likewise.
        * config/i386/avx512fp16vlintrin.h (_mm_rcp_ph):
        New intrinsic.
        (_mm256_rcp_ph): Likewise.
        (_mm_mask_rcp_ph): Likewise.
        (_mm256_mask_rcp_ph): Likewise.
        (_mm_maskz_rcp_ph): Likewise.
        (_mm256_maskz_rcp_ph): Likewise.
        (_mm_scalef_ph): Likewise.
        (_mm256_scalef_ph): Likewise.
        (_mm_mask_scalef_ph): Likewise.
        (_mm256_mask_scalef_ph): Likewise.
        (_mm_maskz_scalef_ph): Likewise.
        (_mm256_maskz_scalef_ph): Likewise.
        * config/i386/i386-builtin.def: Add new builtins.
        * config/i386/sse.md (VFH_AVX512VL): New.
        (avx512fp16_rcp<mode>2<mask_name>): Ditto.
        (avx512fp16_vmrcpv8hf2<mask_scalar_name>): Ditto.
        (avx512f_vmscalef<mode><mask_scalar_name><round_scalar_name>):
        Adjust to support HF vector modes.
        (<avx512>_scalef<mode><mask_name><round_name>): Ditto.

2021-09-14  liuhongt  <hongtao.liu@intel.com>

        * config/i386/avx512fp16intrin.h: (_mm512_sqrt_ph):
        New intrinsic.
        (_mm512_mask_sqrt_ph): Likewise.
        (_mm512_maskz_sqrt_ph): Likewise.
        (_mm512_sqrt_round_ph): Likewise.
        (_mm512_mask_sqrt_round_ph): Likewise.
        (_mm512_maskz_sqrt_round_ph): Likewise.
        (_mm512_rsqrt_ph): Likewise.
        (_mm512_mask_rsqrt_ph): Likewise.
        (_mm512_maskz_rsqrt_ph): Likewise.
        (_mm_rsqrt_sh): Likewise.
        (_mm_mask_rsqrt_sh): Likewise.
        (_mm_maskz_rsqrt_sh): Likewise.
        (_mm_sqrt_sh): Likewise.
        (_mm_mask_sqrt_sh): Likewise.
        (_mm_maskz_sqrt_sh): Likewise.
        (_mm_sqrt_round_sh): Likewise.
        (_mm_mask_sqrt_round_sh): Likewise.
        (_mm_maskz_sqrt_round_sh): Likewise.
        * config/i386/avx512fp16vlintrin.h (_mm_sqrt_ph): New intrinsic.
        (_mm256_sqrt_ph): Likewise.
        (_mm_mask_sqrt_ph): Likewise.
        (_mm256_mask_sqrt_ph): Likewise.
        (_mm_maskz_sqrt_ph): Likewise.
        (_mm256_maskz_sqrt_ph): Likewise.
        (_mm_rsqrt_ph): Likewise.
        (_mm256_rsqrt_ph): Likewise.
        (_mm_mask_rsqrt_ph): Likewise.
        (_mm256_mask_rsqrt_ph): Likewise.
        (_mm_maskz_rsqrt_ph): Likewise.
        (_mm256_maskz_rsqrt_ph): Likewise.
        * config/i386/i386-builtin-types.def: Add corresponding builtin types.
        * config/i386/i386-builtin.def: Add corresponding new builtins.
        * config/i386/i386-expand.c
        (ix86_expand_args_builtin): Handle new builtins.
        (ix86_expand_round_builtin): Ditto.
        * config/i386/sse.md (VF_AVX512FP16VL): New.
        (sqrt<mode>2): Adjust for HF vector modes.
        (<sse>_sqrt<mode>2<mask_name><round_name>): Likewise.
        (<sse>_vmsqrt<mode>2<mask_scalar_name><round_scalar_name>):
        Likewise.
        (<sse>_rsqrt<mode>2<mask_name>): New.
        (avx512fp16_vmrsqrtv8hf2<mask_scalar_name>): Likewise.

2021-09-13  Thomas Schwinge  <thomas@codesourcery.com>

        PR bootstrap/101574
        * diagnostic-spec.c (warning_suppressed_at, copy_warning): Handle
        'RESERVED_LOCATION_P' locations.
        * warning-control.cc (get_nowarn_spec, suppress_warning)
        (copy_warning): Likewise.

2021-09-13  Thomas Schwinge  <thomas@codesourcery.com>

        * diagnostic-spec.h (typedef xint_hash_t): Use 'location_t' instead of...
        (typedef key_type_t): ... this.  Remove.
        (nowarn_map): Document.
        * diagnostic-spec.c (nowarn_map): Likewise.
        * warning-control.cc (convert_to_key): Evolve functions into...
        (get_location): ... these.  Adjust all users.

2021-09-13  Thomas Schwinge  <thomas@codesourcery.com>

        * warning-control.cc (copy_warning): Remove 'nowarn_map' setup.

2021-09-13  Jason Merrill  <jason@redhat.com>

        * params.opt: Add destructive-interference-size and
        constructive-interference-size.
        * doc/invoke.texi: Document them.
        * config/aarch64/aarch64.c (aarch64_override_options_internal):
        Set them.
        * config/arm/arm.c (arm_option_override): Set them.
        * config/i386/i386-options.c (ix86_option_override_internal):
        Set them.

2021-09-13  Martin Liska  <mliska@suse.cz>
            H.J. Lu  <hjl.tools@gmail.com>

        PR target/101696
        * common/config/i386/cpuinfo.h (cpu_indicator_init): Add support
        for x86-64 micro levels for __builtin_cpu_supports.
        * common/config/i386/i386-cpuinfo.h (enum feature_priority):
        Add priorities for the micro-arch levels.
        (enum processor_features): Add new features.
        * common/config/i386/i386-isas.h: Add micro-arch features.
        * config/i386/i386-builtins.c (get_builtin_code_for_version):
        Support the micro-arch levels by callsing
        __builtin_cpu_supports.
        * doc/extend.texi: Document that the levels are support by
          __builtin_cpu_supports.

2021-09-13  Andrew Pinski  <apinski@marvell.com>

        PR target/95969
        * config/aarch64/aarch64-builtins.c (aarch64_fold_builtin_lane_check):
        New function.
        (aarch64_general_fold_builtin): Handle AARCH64_SIMD_BUILTIN_LANE_CHECK.
        (aarch64_general_gimple_fold_builtin): Likewise.

2021-09-13  Andrew Pinski  <apinski@marvell.com>

        * config.gcc: Add m32r-*-linux* and m32rle-*-linux*
        to the Unsupported targets list.
        Remove support for m32r-*-linux* and m32rle-*-linux*.
        * config/m32r/linux.h: Removed.
        * config/m32r/t-linux: Removed.

2021-09-13  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        PR target/102252
        * config/aarch64/aarch64.c (aarch64_classify_address): Don't allow
        register index for SVE predicate modes.

2021-09-13  Aldy Hernandez  <aldyh@redhat.com>

        * tree-ssa-threadbackward.c
        (back_threader_profitability::profitable_path_p): Remove FSM
        references.
        (back_threader_registry::register_path): Same.
        * tree-ssa-threadedge.c
        (jump_threader::simplify_control_stmt_condition): Same.
        * tree-ssa-threadupdate.c (jt_path_registry::jt_path_registry):
        Add backedge_threads argument.
        (fwd_jt_path_registry::fwd_jt_path_registry): Pass
        backedge_threads argument.
        (back_jt_path_registry::back_jt_path_registry):  Same.
        (dump_jump_thread_path): Adjust for FSM removal.
        (back_jt_path_registry::rewire_first_differing_edge): Same.
        (back_jt_path_registry::adjust_paths_after_duplication): Same.
        (back_jt_path_registry::update_cfg): Same.
        (jt_path_registry::register_jump_thread): Same.
        * tree-ssa-threadupdate.h (enum jump_thread_edge_type): Remove
        EDGE_FSM_THREAD.
        (class back_jt_path_registry): Add backedge_threads to
        constructor.

2021-09-13  Martin Liska  <mliska@suse.cz>

        PR c++/101331
        * asan.h (sanitize_coverage_p): Handle when fn == NULL.

2021-09-13  H.J. Lu  <hjl.tools@gmail.com>

        PR target/101935
        * config/i386/i386.h (TARGET_AVX256_MOVE_BY_PIECES): New.
        (TARGET_AVX256_STORE_BY_PIECES): Likewise.
        (MOVE_MAX): Check TARGET_AVX256_MOVE_BY_PIECES and
        TARGET_AVX256_STORE_BY_PIECES instead of
        TARGET_AVX256_SPLIT_UNALIGNED_LOAD and
        TARGET_AVX256_SPLIT_UNALIGNED_STORE.
        (STORE_MAX_PIECES): Check TARGET_AVX256_STORE_BY_PIECES instead
        of TARGET_AVX256_SPLIT_UNALIGNED_STORE.
        * config/i386/x86-tune.def (X86_TUNE_AVX256_MOVE_BY_PIECES): New.
        (X86_TUNE_AVX256_STORE_BY_PIECES): Likewise.

2021-09-13  liuhongt  <hongtao.liu@intel.com>

        PR bootstrap/102302
        * expmed.c (extract_bit_field_using_extv): Use
        gen_lowpart_if_possible instead of gen_lowpart to avoid ICE.

2021-09-13  Aldy Hernandez  <aldyh@redhat.com>

        * Makefile.in (OBJS): Add value-pointer-equiv.o.
        * gimple-ssa-evrp.c (class ssa_equiv_stack): Move to
        value-pointer-equiv.*.
        (ssa_equiv_stack::ssa_equiv_stack): Same.
        (ssa_equiv_stack::enter): Same.
        (ssa_equiv_stack::leave): Same.
        (ssa_equiv_stack::push_replacement): Same.
        (ssa_equiv_stack::get_replacement): Same.
        (is_pointer_ssa): Same.
        (class pointer_equiv_analyzer): Same.
        (pointer_equiv_analyzer::pointer_equiv_analyzer): Same.
        (pointer_equiv_analyzer::~pointer_equiv_analyzer): Same.
        (pointer_equiv_analyzer::set_global_equiv): Same.
        (pointer_equiv_analyzer::set_cond_equiv): Same.
        (pointer_equiv_analyzer::get_equiv): Same.
        (pointer_equiv_analyzer::enter): Same.
        (pointer_equiv_analyzer::leave): Same.
        (pointer_equiv_analyzer::get_equiv_expr): Same.
        (pta_valueize): Same.
        (pointer_equiv_analyzer::visit_stmt): Same.
        (pointer_equiv_analyzer::visit_edge): Same.
        (hybrid_folder::value_of_expr): Same.
        (hybrid_folder::value_on_edge): Same.
        * value-pointer-equiv.cc: New file.
        * value-pointer-equiv.h: New file.

2021-09-13  Richard Earnshaw  <rearnsha@arm.com>

        PR target/102125
        * gimple-fold.c (gimple_fold_builtin_memory_op): Allow folding
        memcpy if the size is not more than MOVE_MAX * MOVE_RATIO.

2021-09-13  Richard Earnshaw  <rearnsha@arm.com>

        PR target/102125
        * config/arm/arm.md (movmisaligndi): New define_expand.
        * config/arm/vec-common.md (movmisalign<mode>): Iterate over VDQ mode.

2021-09-13  Richard Earnshaw  <rearnsha@arm.com>

        PR target/102125
        * emit-rtl.c (gen_highpart): Use adjust_address to handle
        MEM rather than calling simplify_gen_subreg.

2021-09-13  Jan-Benedict Glaw  <jbglaw@ług-owl.de>

        * config/alpha/vms.h (INIT_CUMULATIVE_ARGS): Wrap multi-statment
        define into a block.

2021-09-13  Richard Biener  <rguenther@suse.de>

        * config/darwin.h (DARWIN_PREFER_DWARF): Do not define.
        * config/i386/darwin.h (PREFERRED_DEBUGGING_TYPE): Do not
        change based on DARWIN_PREFER_DWARF not being defined.

2021-09-13  Richard Biener  <rguenther@suse.de>

        * config/i386/lynx.h: Remove undef of PREFERRED_DEBUGGING_TYPE
        to inherit from elfos.h

2021-09-13  Richard Biener  <rguenther@suse.de>

        * config.gcc: Add cr16-*-* to the list of obsoleted targets.

2021-09-13  Richard Biener  <rguenther@suse.de>

        * config/avr/elf.h (PREFERRED_DEBUGGING_TYPE): Remove
        override, pick up DWARF2_DEBUG define from elfos.h

2021-09-13  Richard Biener  <rguenther@suse.de>

        * config/rx/rx.h (PREFERRED_DEBUGGING_TYPE): Always define to
        DWARF2_DEBUG.

2021-09-13  Richard Biener  <rguenther@suse.de>

        * config/alpha/vms.h (PREFERRED_DEBUGGING_TYPE): Define to
        DWARF2_DEBUG.

2021-09-13  Richard Biener  <rguenther@suse.de>

        * config/i386/cygming.h: Always default to DWARF2 debugging.
        Do not define DBX_DEBUGGING_INFO, that's done via dbxcoff.h
        already.
        * doc/install.texi: Document binutils 2.16 as minimum
        requirement for mingw.

2021-09-13  Kewen Lin  <linkw@linux.ibm.com>

        * config/rs6000/rs6000.c (struct rs6000_cost_data): New members
        nstmts, nloads and extra_ctor_cost.
        (rs6000_density_test): Add load density related heuristics.  Do
        extra costing on vector construction statements if need.
        (rs6000_init_cost): Init new members.
        (rs6000_update_target_cost_per_stmt): New function.
        (rs6000_add_stmt_cost): Factor vect_nonmem hunk out to function
        rs6000_update_target_cost_per_stmt and call it.

2021-09-13  Kewen Lin  <linkw@linux.ibm.com>

        * config/rs6000/rs6000.c (struct rs6000_cost_data): Remove typedef.
        (rs6000_init_cost): Adjust.

2021-09-13  liuhongt  <hongtao.liu@intel.com>

        * config/i386/i386.md: (UNSPEC_COPYSIGN): Remove.
        (UNSPEC_XORSIGN): Ditto.

2021-09-12  Roger Sayle  <roger@nextmovesoftware.com>

        * expr.c (convert_move): Preserve SUBREG_PROMOTED_VAR_P when
        creating a (wider) partial subreg from a SUBREG_PROMOTED_VAR_P
        subreg.

2021-09-11  Aldy Hernandez  <aldyh@redhat.com>

        * tree-ssa-threadbackward.c (class back_threader_registry): Use
        back_jt_path_registry.
        * tree-ssa-threadedge.c (jump_threader::jump_threader): Use
        fwd_jt_path_registry.
        * tree-ssa-threadedge.h (class jump_threader): Same..
        * tree-ssa-threadupdate.c
        (jump_thread_path_registry::jump_thread_path_registry): Rename...
        (jt_path_registry::jt_path_registry): ...to this.
        (jump_thread_path_registry::~jump_thread_path_registry): Rename...
        (jt_path_registry::~jt_path_registry): ...this.
        (fwd_jt_path_registry::fwd_jt_path_registry): New.
        (fwd_jt_path_registry::~fwd_jt_path_registry): New.
        (jump_thread_path_registry::allocate_thread_edge): Rename...
        (jt_path_registry::allocate_thread_edge): ...to this.
        (jump_thread_path_registry::allocate_thread_path): Rename...
        (jt_path_registry::allocate_thread_path): ...to this.
        (jump_thread_path_registry::lookup_redirection_data): Rename...
        (fwd_jt_path_registry::lookup_redirection_data): ...to this.
        (jump_thread_path_registry::thread_block_1): Rename...
        (fwd_jt_path_registry::thread_block_1): ...to this.
        (jump_thread_path_registry::thread_block): Rename...
        (fwd_jt_path_registry::thread_block): ...to this.
        (jt_path_registry::thread_through_loop_header): Rename...
        (fwd_jt_path_registry::thread_through_loop_header): ...to this.
        (jump_thread_path_registry::mark_threaded_blocks): Rename...
        (fwd_jt_path_registry::mark_threaded_blocks): ...to this.
        (jump_thread_path_registry::debug_path): Rename...
        (jt_path_registry::debug_path): ...to this.
        (jump_thread_path_registry::dump): Rename...
        (jt_path_registry::debug): ...to this.
        (jump_thread_path_registry::rewire_first_differing_edge): Rename...
        (back_jt_path_registry::rewire_first_differing_edge): ...to this.
        (jump_thread_path_registry::adjust_paths_after_duplication): Rename...
        (back_jt_path_registry::adjust_paths_after_duplication): ...to this.
        (jump_thread_path_registry::duplicate_thread_path): Rename...
        (back_jt_path_registry::duplicate_thread_path): ...to this.  Also,
        drop ill-formed candidates.
        (jump_thread_path_registry::remove_jump_threads_including): Rename...
        (fwd_jt_path_registry::remove_jump_threads_including): ...to this.
        (jt_path_registry::thread_through_all_blocks): New.
        (back_jt_path_registry::update_cfg): New.
        (fwd_jt_path_registry::update_cfg): New.
        (jump_thread_path_registry::register_jump_thread): Rename...
        (jt_path_registry::register_jump_thread): ...to this.
        * tree-ssa-threadupdate.h (class jump_thread_path_registry):
        Abstract to...
        (class jt_path_registry): ...here.
        (class fwd_jt_path_registry): New.
        (class back_jt_path_registry): New.

2021-09-10  liuhongt  <hongtao.liu@intel.com>

        Revert:
        2021-09-01  liuhongt  <hongtao.liu@intel.com>

        * emit-rtl.c (validate_subreg): Get rid of all float-int
        special cases.

2021-09-10  Jakub Jelinek  <jakub@redhat.com>

        * tree-core.h (enum omp_memory_order): Add OMP_MEMORY_ORDER_MASK,
        OMP_FAIL_MEMORY_ORDER_UNSPECIFIED, OMP_FAIL_MEMORY_ORDER_RELAXED,
        OMP_FAIL_MEMORY_ORDER_ACQUIRE, OMP_FAIL_MEMORY_ORDER_RELEASE,
        OMP_FAIL_MEMORY_ORDER_ACQ_REL, OMP_FAIL_MEMORY_ORDER_SEQ_CST and
        OMP_FAIL_MEMORY_ORDER_MASK enumerators.
        (OMP_FAIL_MEMORY_ORDER_SHIFT): Define.
        * gimple-pretty-print.c (dump_gimple_omp_atomic_load,
        dump_gimple_omp_atomic_store): Print [weak] for weak atomic
        load/store.
        * gimple.h (enum gf_mask): Change GF_OMP_ATOMIC_MEMORY_ORDER
        to 6-bit mask, adjust GF_OMP_ATOMIC_NEED_VALUE value and add
        GF_OMP_ATOMIC_WEAK.
        (gimple_omp_atomic_weak_p, gimple_omp_atomic_set_weak): New inline
        functions.
        * tree.h (OMP_ATOMIC_WEAK): Define.
        * tree-pretty-print.c (dump_omp_atomic_memory_order): Adjust for
        fail memory order being encoded in the same enum and also print
        fail clause if present.
        (dump_generic_node): Print weak clause if OMP_ATOMIC_WEAK.
        * gimplify.c (goa_stabilize_expr): Add target_expr and rhs arguments,
        handle pre_p == NULL case as a test mode that only returns value
        but doesn't change gimplify nor change anything otherwise, adjust
        recursive calls, add MODIFY_EXPR, ADDR_EXPR, COND_EXPR, TARGET_EXPR
        and CALL_EXPR handling, adjust COMPOUND_EXPR handling for
        __builtin_clear_padding calls, for !rhs gimplify as lvalue rather
        than rvalue.
        (gimplify_omp_atomic): Adjust goa_stabilize_expr caller.  Handle
        COND_EXPR rhs.  Set weak flag on gimple load/store for
        OMP_ATOMIC_WEAK.
        * omp-expand.c (omp_memory_order_to_fail_memmodel): New function.
        (omp_memory_order_to_memmodel): Adjust for fail clause encoded
        in the same enum.
        (expand_omp_atomic_cas): New function.
        (expand_omp_atomic_pipeline): Use omp_memory_order_to_fail_memmodel
        function.
        (expand_omp_atomic): Attempt to optimize atomic compare and exchange
        using expand_omp_atomic_cas.

2021-09-10  Aldy Hernandez  <aldyh@redhat.com>
            Michael Matz  <matz@suse.de>

        * tree-pass.h (PROP_loop_opts_done): New.
        * gimple-range-path.cc (path_range_query::internal_range_of_expr):
        Intersect with global range.
        * tree-ssa-loop.c (tree_ssa_loop_done): Set PROP_loop_opts_done.
        * tree-ssa-threadbackward.c
        (back_threader_profitability::profitable_path_p): Disable
        threading through latches until after loop optimizations have run.

2021-09-10  David Faust  <david.faust@oracle.com>

        * doc/invoke.texi: Document BPF -mcpu, -mjmpext, -mjmp32 and -malu32
        options.

2021-09-10  David Faust  <david.faust@oracle.com>

        * config/bpf/bpf-opts.h (bpf_isa_version): New enum.
        * config/bpf/bpf-protos.h (bpf_expand_cbranch): New.
        * config/bpf/bpf.c (bpf_option_override): Handle -mcpu option.
        (bpf_expand_cbranch): New function.
        * config/bpf/bpf.md (AM mode iterator): Conditionalize support for SI
        mode.
        (zero_extendsidi2): Only use mov32 instruction if it is available.
        (SIM mode iterator): Conditionalize support for SI mode.
        (JM mode iterator): New.
        (cbranchdi4): Update name, use new JM iterator. Use bpf_expand_cbranch.
        (*branch_on_di): Update name, use new JM iterator.
        * config/bpf/bpf.opt: (mjmpext): New option.
        (malu32): Likewise.
        (mjmp32): Likewise.
        (mcpu): Likewise.
        (bpf_isa): New enum.

2021-09-10  David Faust  <david.faust@oracle.com>

        * config/bpf/bpf.md (zero_extendhidi2): Add new output template
        for register-to-register extensions.
        (zero_extendqidi2): Likewise.

2021-09-10  Richard Biener  <rguenther@suse.de>

        PR middle-end/102273
        * internal-fn.c (expand_DEFERRED_INIT): Always expand non-SSA vars.

2021-09-10  Richard Biener  <rguenther@suse.de>

        PR middle-end/102269
        * gimplify.c (is_var_need_auto_init): Empty types do not need
        initialization.

2021-09-10  Richard Biener  <rguenther@suse.de>

        * configure.ac (--with-stabs): Remove.
        * configure: Regenerate.
        * doc/install.texi: Remove --with-stabs documentation.

2021-09-10  liuhongt  <hongtao.liu@intel.com>

        * config/i386/avx512fp16intrin.h: (_mm512_cmp_ph_mask):
        New intrinsic.
        (_mm512_mask_cmp_ph_mask): Likewise.
        (_mm512_cmp_round_ph_mask): Likewise.
        (_mm512_mask_cmp_round_ph_mask): Likewise.
        (_mm_cmp_sh_mask): Likewise.
        (_mm_mask_cmp_sh_mask): Likewise.
        (_mm_cmp_round_sh_mask): Likewise.
        (_mm_mask_cmp_round_sh_mask): Likewise.
        (_mm_comieq_sh): Likewise.
        (_mm_comilt_sh): Likewise.
        (_mm_comile_sh): Likewise.
        (_mm_comigt_sh): Likewise.
        (_mm_comige_sh): Likewise.
        (_mm_comineq_sh): Likewise.
        (_mm_ucomieq_sh): Likewise.
        (_mm_ucomilt_sh): Likewise.
        (_mm_ucomile_sh): Likewise.
        (_mm_ucomigt_sh): Likewise.
        (_mm_ucomige_sh): Likewise.
        (_mm_ucomineq_sh): Likewise.
        (_mm_comi_round_sh): Likewise.
        (_mm_comi_sh): Likewise.
        * config/i386/avx512fp16vlintrin.h (_mm_cmp_ph_mask): New intrinsic.
        (_mm_mask_cmp_ph_mask): Likewise.
        (_mm256_cmp_ph_mask): Likewise.
        (_mm256_mask_cmp_ph_mask): Likewise.
        * config/i386/i386-builtin-types.def: Add corresponding builtin types.
        * config/i386/i386-builtin.def: Add corresponding new builtins.
        * config/i386/i386-expand.c
        (ix86_expand_args_builtin): Handle new builtin types.
        (ix86_expand_round_builtin): Ditto.
        * config/i386/i386.md (ssevecmode): Add HF mode.
        (MODEFH): New mode iterator.
        * config/i386/sse.md
        (V48H_AVX512VL): New mode iterator to support HF vector modes.
        Ajdust corresponding description.
        (ssecmpintprefix): New.
        (VI12_AVX512VL): Adjust to support HF vector modes.
        (cmp_imm_predicate): Likewise.
        (<avx512>_cmp<mode>3<mask_scalar_merge_name><round_saeonly_name>):
        Likewise.
        (avx512f_vmcmp<mode>3<round_saeonly_name>): Likewise.
        (avx512f_vmcmp<mode>3_mask<round_saeonly_name>): Likewise.
        (<sse>_<unord>comi<round_saeonly_name>): Likewise.

2021-09-10  liuhongt  <hongtao.liu@intel.com>

        * config/i386/avx512fp16intrin.h: (_mm512_max_ph): New intrinsic.
        (_mm512_mask_max_ph): Likewise.
        (_mm512_maskz_max_ph): Likewise.
        (_mm512_min_ph): Likewise.
        (_mm512_mask_min_ph): Likewise.
        (_mm512_maskz_min_ph): Likewise.
        (_mm512_max_round_ph): Likewise.
        (_mm512_mask_max_round_ph): Likewise.
        (_mm512_maskz_max_round_ph): Likewise.
        (_mm512_min_round_ph): Likewise.
        (_mm512_mask_min_round_ph): Likewise.
        (_mm512_maskz_min_round_ph): Likewise.
        (_mm_max_sh): Likewise.
        (_mm_mask_max_sh): Likewise.
        (_mm_maskz_max_sh): Likewise.
        (_mm_min_sh): Likewise.
        (_mm_mask_min_sh): Likewise.
        (_mm_maskz_min_sh): Likewise.
        (_mm_max_round_sh): Likewise.
        (_mm_mask_max_round_sh): Likewise.
        (_mm_maskz_max_round_sh): Likewise.
        (_mm_min_round_sh): Likewise.
        (_mm_mask_min_round_sh): Likewise.
        (_mm_maskz_min_round_sh): Likewise.
        * config/i386/avx512fp16vlintrin.h (_mm_max_ph): New intrinsic.
        (_mm256_max_ph): Likewise.
        (_mm_mask_max_ph): Likewise.
        (_mm256_mask_max_ph): Likewise.
        (_mm_maskz_max_ph): Likewise.
        (_mm256_maskz_max_ph): Likewise.
        (_mm_min_ph): Likewise.
        (_mm256_min_ph): Likewise.
        (_mm_mask_min_ph): Likewise.
        (_mm256_mask_min_ph): Likewise.
        (_mm_maskz_min_ph): Likewise.
        (_mm256_maskz_min_ph): Likewise.
        * config/i386/i386-builtin-types.def: Add corresponding builtin types.
        * config/i386/i386-builtin.def: Add corresponding new builtins.
        * config/i386/i386-expand.c
        (ix86_expand_args_builtin): Handle new builtin types.
        * config/i386/sse.md
        (<code><mode>3<mask_name><round_saeonly_name>): Adjust to
        support HF vector modes.
        (*<code><mode>3<mask_name><round_saeonly_name>): Likewise.
        (ieee_<ieee_maxmin><mode>3<mask_name><round_saeonly_name>):
        Likewise.
        (<sse>_vm<code><mode>3<mask_scalar_name><round_saeonly_scalar_name>):
        Likewise.
        * config/i386/subst.md (round_saeonly_mode512bit_condition):
        Adjust for HF vector modes.

2021-09-10  Liu, Hongtao  <hongtao.liu@intel.com>

        * config/i386/avx512fp16intrin.h (_mm_add_sh): New intrinsic.
        (_mm_mask_add_sh): Likewise.
        (_mm_maskz_add_sh): Likewise.
        (_mm_sub_sh): Likewise.
        (_mm_mask_sub_sh): Likewise.
        (_mm_maskz_sub_sh): Likewise.
        (_mm_mul_sh): Likewise.
        (_mm_mask_mul_sh): Likewise.
        (_mm_maskz_mul_sh): Likewise.
        (_mm_div_sh): Likewise.
        (_mm_mask_div_sh): Likewise.
        (_mm_maskz_div_sh): Likewise.
        (_mm_add_round_sh): Likewise.
        (_mm_mask_add_round_sh): Likewise.
        (_mm_maskz_add_round_sh): Likewise.
        (_mm_sub_round_sh): Likewise.
        (_mm_mask_sub_round_sh): Likewise.
        (_mm_maskz_sub_round_sh): Likewise.
        (_mm_mul_round_sh): Likewise.
        (_mm_mask_mul_round_sh): Likewise.
        (_mm_maskz_mul_round_sh): Likewise.
        (_mm_div_round_sh): Likewise.
        (_mm_mask_div_round_sh): Likewise.
        (_mm_maskz_div_round_sh): Likewise.
        * config/i386/i386-builtin-types.def: Add corresponding builtin types.
        * config/i386/i386-builtin.def: Add corresponding new builtins.
        * config/i386/i386-expand.c
        (ix86_expand_round_builtin): Handle new builtins.
        * config/i386/sse.md (VF_128): Change description.
        (<sse>_vm<plusminus_insn><mode>3<mask_scalar_name><round_scalar_name>):
        Adjust to support HF vector modes.
        (<sse>_vm<multdiv_mnemonic><mode>3<mask_scalar_name><round_scalar_name>):
        Likewise.

2021-09-10  H.J. Lu  <hjl.tools@gmail.com>

        * config/i386/i386-expand.c
        (ix86_avx256_split_vector_move_misalign): Handle V16HF mode.
        * config/i386/i386.c
        (ix86_preferred_simd_mode): Handle HF mode.
        * config/i386/sse.md (V_256H): New mode iterator.
        (avx_vextractf128<mode>): Use it.
        (VEC_INIT_MODE): Align vector HFmode condition to vector
        HImodes since there're no real HF instruction used.
        (VEC_INIT_HALF_MODE): Ditto.
        (VIHF): Ditto.
        (VIHF_AVX512BW): Ditto.
        (*vec_extracthf): Ditto.
        (VEC_EXTRACT_MODE): Ditto.

2021-09-10  Richard Biener  <rguenther@suse.de>

        PR target/102255
        * config/dbx.h: Remove.
        * config/dbxcoff.h: Do not define PREFERRED_DEBUGGING_TYPE.
        * config/lynx.h: Likewise.

2021-09-10  liuhongt  <hongtao.liu@intel.com>

        * config/i386/i386-expand.c (ix86_expand_copysign): Expand
        right into ANDNOT + AND + IOR, using paradoxical subregs.
        (ix86_split_copysign_const): Remove.
        (ix86_split_copysign_var): Ditto.
        * config/i386/i386-protos.h (ix86_split_copysign_const): Dotto.
        (ix86_split_copysign_var): Ditto.
        * config/i386/i386.md (@copysign<mode>3_const): Ditto.
        (@copysign<mode>3_var): Ditto.

2021-09-09  qing zhao  <qing.zhao@oracle.com>

        * builtins.c (expand_builtin_memset): Make external visible.
        * builtins.h (expand_builtin_memset): Declare extern.
        * common.opt (ftrivial-auto-var-init=): New option.
        * doc/extend.texi: Document the uninitialized attribute.
        * doc/invoke.texi: Document -ftrivial-auto-var-init.
        * flag-types.h (enum auto_init_type): New enumerated type
        auto_init_type.
        * gimple-fold.c (clear_padding_type): Add one new parameter.
        (clear_padding_union): Likewise.
        (clear_padding_emit_loop): Likewise.
        (clear_type_padding_in_mask): Likewise.
        (gimple_fold_builtin_clear_padding): Handle this new parameter.
        * gimplify.c (gimple_add_init_for_auto_var): New function.
        (gimple_add_padding_init_for_auto_var): New function.
        (is_var_need_auto_init): New function.
        (gimplify_decl_expr): Add initialization to automatic variables per
        users' requests.
        (gimplify_call_expr): Add one new parameter for call to
        __builtin_clear_padding.
        (gimplify_init_constructor): Add padding initialization in the end.
        * internal-fn.c (INIT_PATTERN_VALUE): New macro.
        (expand_DEFERRED_INIT): New function.
        * internal-fn.def (DEFERRED_INIT): New internal function.
        * tree-cfg.c (verify_gimple_call): Verify calls to .DEFERRED_INIT.
        * tree-sra.c (generate_subtree_deferred_init): New function.
        (scan_function): Avoid setting cannot_scalarize_away_bitmap for
        calls to .DEFERRED_INIT.
        (sra_modify_deferred_init): New function.
        (sra_modify_function_body): Handle calls to DEFERRED_INIT specially.
        * tree-ssa-structalias.c (find_func_aliases_for_call): Likewise.
        * tree-ssa-uninit.c (warn_uninit): Handle calls to DEFERRED_INIT
        specially.
        (check_defs): Likewise.
        (warn_uninitialized_vars): Likewise.
        * tree-ssa.c (ssa_undefined_value_p): Likewise.
        * tree.c (build_common_builtin_nodes): Build tree node for
        BUILT_IN_CLEAR_PADDING when needed.

2021-09-09  Richard Biener  <rguenther@suse.de>

        * tree-ssa-loop-im.c (fill_always_executed_in_1): Walk
        into all subloops.

2021-09-09  Richard Biener  <rguenther@suse.de>

        * tree-ssa-loop-im.c (fill_always_executed_in_1): Integrate
        DOM walk from get_loop_body_in_dom_order using a worklist
        approach.

2021-09-09  liuhongt  <hongtao.liu@intel.com>

        * config.gcc: Add avx512fp16vlintrin.h.
        * config/i386/avx512fp16intrin.h: (_mm512_add_ph): New intrinsic.
        (_mm512_mask_add_ph): Likewise.
        (_mm512_maskz_add_ph): Likewise.
        (_mm512_sub_ph): Likewise.
        (_mm512_mask_sub_ph): Likewise.
        (_mm512_maskz_sub_ph): Likewise.
        (_mm512_mul_ph): Likewise.
        (_mm512_mask_mul_ph): Likewise.
        (_mm512_maskz_mul_ph): Likewise.
        (_mm512_div_ph): Likewise.
        (_mm512_mask_div_ph): Likewise.
        (_mm512_maskz_div_ph): Likewise.
        (_mm512_add_round_ph): Likewise.
        (_mm512_mask_add_round_ph): Likewise.
        (_mm512_maskz_add_round_ph): Likewise.
        (_mm512_sub_round_ph): Likewise.
        (_mm512_mask_sub_round_ph): Likewise.
        (_mm512_maskz_sub_round_ph): Likewise.
        (_mm512_mul_round_ph): Likewise.
        (_mm512_mask_mul_round_ph): Likewise.
        (_mm512_maskz_mul_round_ph): Likewise.
        (_mm512_div_round_ph): Likewise.
        (_mm512_mask_div_round_ph): Likewise.
        (_mm512_maskz_div_round_ph): Likewise.
        * config/i386/avx512fp16vlintrin.h: New header.
        * config/i386/i386-builtin-types.def (V16HF, V8HF, V32HF):
        Add new builtin types.
        * config/i386/i386-builtin.def: Add corresponding builtins.
        * config/i386/i386-expand.c
        (ix86_expand_args_builtin): Handle new builtin types.
        (ix86_expand_round_builtin): Likewise.
        * config/i386/immintrin.h: Include avx512fp16vlintrin.h
        * config/i386/sse.md (VFH): New mode_iterator.
        (VF2H): Likewise.
        (avx512fmaskmode): Add HF vector modes.
        (avx512fmaskhalfmode): Likewise.
        (<plusminus_insn><mode>3<mask_name><round_name>): Adjust to for
        HF vector modes.
        (*<plusminus_insn><mode>3<mask_name><round_name>): Likewise.
        (mul<mode>3<mask_name><round_name>): Likewise.
        (*mul<mode>3<mask_name><round_name>): Likewise.
        (div<mode>3): Likewise.
        (<sse>_div<mode>3<mask_name><round_name>): Likewise.
        * config/i386/subst.md (SUBST_V): Add HF vector modes.
        (SUBST_A): Likewise.
        (round_mode512bit_condition): Adjust for V32HFmode.

2021-09-09  liuhongt  <hongtao.liu@intel.com>

        PR target/101059
        * config/i386/sse.md (reduc_plus_scal_<mode>): Split to ..
        (reduc_plus_scal_v4sf): .. this, New define_expand.
        (reduc_plus_scal_v2df): .. and this, New define_expand.

2021-09-09  liuhongt  <hongtao.liu@intel.com>

        PR target/91103
        * config/i386/sse.md (*vec_extract<mode><ssescalarmodelower>_valign):
        New define_insn.

2021-09-08  Jonathan Wakely  <jwakely@redhat.com>

        PR c++/60318
        * doc/trouble.texi (Copy Assignment): Fix description of
        behaviour and fix code in example.

2021-09-08  Segher Boessenkool  <segher@kernel.crashing.org>

        PR target/102107
        * config/rs6000/rs6000-logue.c (rs6000_emit_epilogue): For ELFv2 use
        r11 instead of r12 for restoring CR.

2021-09-08  Jakub Jelinek  <jakub@redhat.com>
            liuhongt  <hongtao.liu@intel.com>

        PR target/89984
        * config/i386/i386.md (@xorsign<mode>3_1): Remove.
        * config/i386/i386-expand.c (ix86_expand_xorsign): Expand right away
        into AND with mask and XOR, using paradoxical subregs.
        (ix86_split_xorsign): Remove.
        * config/i386/i386-protos.h (ix86_split_xorsign): Remove.

2021-09-08  Di Zhao  <dizhao@os.amperecomputing.com>

        * tree-ssa-sccvn.c (vn_nary_op_insert_into): fix result compare

2021-09-08  Jakub Jelinek  <jakub@redhat.com>

        PR target/102224
        * config/i386/i386.md (xorsign<mode>3): If operands[1] is equal to
        operands[2], emit abs<mode>2 instead.
        (@xorsign<mode>3_1): Add early-clobbers for output operand, enable
        first alternative even for avx, add another alternative with
        =&Yv <- 0, Yv, Yvm constraints.
        * config/i386/i386-expand.c (ix86_split_xorsign): If op0 is equal
        to op1, emit vpandn instead.

2021-09-08  liuhongt  <hongtao.liu@intel.com>

        * config/i386/avx512fp16intrin.h (_mm_set_ph): New intrinsic.
        (_mm256_set_ph): Likewise.
        (_mm512_set_ph): Likewise.
        (_mm_setr_ph): Likewise.
        (_mm256_setr_ph): Likewise.
        (_mm512_setr_ph): Likewise.
        (_mm_set1_ph): Likewise.
        (_mm256_set1_ph): Likewise.
        (_mm512_set1_ph): Likewise.
        (_mm_setzero_ph): Likewise.
        (_mm256_setzero_ph): Likewise.
        (_mm512_setzero_ph): Likewise.
        (_mm_set_sh): Likewise.
        (_mm_load_sh): Likewise.
        (_mm_store_sh): Likewise.
        * config/i386/i386-builtin-types.def (V8HF): New type.
        (DEF_FUNCTION_TYPE (V8HF, V8HI)): New builtin function type
        * config/i386/i386-expand.c (ix86_expand_vector_init_duplicate):
        Support vector HFmodes.
        (ix86_expand_vector_init_one_nonzero): Likewise.
        (ix86_expand_vector_init_one_var): Likewise.
        (ix86_expand_vector_init_interleave): Likewise.
        (ix86_expand_vector_init_general): Likewise.
        (ix86_expand_vector_set): Likewise.
        (ix86_expand_vector_extract): Likewise.
        (ix86_expand_vector_init_concat): Likewise.
        (ix86_expand_sse_movcc): Handle vector HFmodes.
        (ix86_expand_vector_set_var): Ditto.
        * config/i386/i386-modes.def: Add HF vector modes in comment.
        * config/i386/i386.c (classify_argument): Add HF vector modes.
        (ix86_hard_regno_mode_ok): Allow HF vector modes for AVX512FP16.
        (ix86_vector_mode_supported_p): Likewise.
        (ix86_set_reg_reg_cost): Handle vector HFmode.
        (ix86_get_ssemov): Handle vector HFmode.
        (function_arg_advance_64): Pass unamed V16HFmode and V32HFmode
        by stack.
        (function_arg_advance_32): Pass V8HF/V16HF/V32HF by sse reg for 32bit
        mode.
        (function_arg_advance_32): Ditto.
        * config/i386/i386.h (VALID_AVX512FP16_REG_MODE): New.
        (VALID_AVX256_REG_OR_OI_MODE): Rename to ..
        (VALID_AVX256_REG_OR_OI_VHF_MODE): .. this, and add V16HF.
        (VALID_SSE2_REG_VHF_MODE): New.
        (VALID_AVX512VL_128_REG_MODE): Add V8HF and TImode.
        (SSE_REG_MODE_P): Add vector HFmode.
        * config/i386/i386.md (mode): Add HF vector modes.
        (MODE_SIZE): Likewise.
        (ssemodesuffix): Add ph suffix for HF vector modes.
        * config/i386/sse.md (VFH_128): New mode iterator.
        (VMOVE): Adjust for HF vector modes.
        (V): Likewise.
        (V_256_512): Likewise.
        (avx512): Likewise.
        (avx512fmaskmode): Likewise.
        (shuffletype): Likewise.
        (sseinsnmode): Likewise.
        (ssedoublevecmode): Likewise.
        (ssehalfvecmode): Likewise.
        (ssehalfvecmodelower): Likewise.
        (ssePScmode): Likewise.
        (ssescalarmode): Likewise.
        (ssescalarmodelower): Likewise.
        (sseintprefix): Likewise.
        (i128): Likewise.
        (bcstscalarsuff): Likewise.
        (xtg_mode): Likewise.
        (VI12HF_AVX512VL): New mode_iterator.
        (VF_AVX512FP16): Likewise.
        (VIHF): Likewise.
        (VIHF_256): Likewise.
        (VIHF_AVX512BW): Likewise.
        (V16_256): Likewise.
        (V32_512): Likewise.
        (sseintmodesuffix): New mode_attr.
        (sse): Add scalar and vector HFmodes.
        (ssescalarmode): Add vector HFmode mapping.
        (ssescalarmodesuffix): Add sh suffix for HFmode.
        (*<sse>_vm<insn><mode>3): Use VFH_128.
        (*<sse>_vm<multdiv_mnemonic><mode>3): Likewise.
        (*ieee_<ieee_maxmin><mode>3): Likewise.
        (<avx512>_blendm<mode>): New define_insn.
        (vec_setv8hf): New define_expand.
        (vec_set<mode>_0): New define_insn for HF vector set.
        (*avx512fp16_movsh): Likewise.
        (avx512fp16_movsh): Likewise.
        (vec_extract_lo_v32hi): Rename to ...
        (vec_extract_lo_<mode>): ... this, and adjust to allow HF
        vector modes.
        (vec_extract_hi_v32hi): Likewise.
        (vec_extract_hi_<mode>): Likewise.
        (vec_extract_lo_v16hi): Likewise.
        (vec_extract_lo_<mode>): Likewise.
        (vec_extract_hi_v16hi): Likewise.
        (vec_extract_hi_<mode>): Likewise.
        (vec_set_hi_v16hi): Likewise.
        (vec_set_hi_<mode>): Likewise.
        (vec_set_lo_v16hi): Likewise.
        (vec_set_lo_<mode>): Likewise.
        (*vec_extract<mode>_0): New define_insn_and_split for HF
        vector extract.
        (*vec_extracthf): New define_insn.
        (VEC_EXTRACT_MODE): Add HF vector modes.
        (PINSR_MODE): Add V8HF.
        (sse2p4_1): Likewise.
        (pinsr_evex_isa): Likewise.
        (<sse2p4_1>_pinsr<ssemodesuffix>): Adjust to support
        insert for V8HFmode.
        (pbroadcast_evex_isa): Add HF vector modes.
        (AVX2_VEC_DUP_MODE): Likewise.
        (VEC_INIT_MODE): Likewise.
        (VEC_INIT_HALF_MODE): Likewise.
        (avx2_pbroadcast<mode>): Adjust to support HF vector mode
        broadcast.
        (avx2_pbroadcast<mode>_1): Likewise.
        (<avx512>_vec_dup<mode>_1): Likewise.
        (<avx512>_vec_dup<mode><mask_name>): Likewise.
        (<mask_codefor><avx512>_vec_dup_gpr<mode><mask_name>):
        Likewise.

2021-09-08  Guo, Xuepeng  <xuepeng.guo@intel.com>
            H.J. Lu  <hongjiu.lu@intel.com>
            Liu Hongtao  <hongtao.liu@intel.com>
            Wang Hongyu  <hongyu.wang@intel.com>
            Xu Dianhong  <dianhong.xu@intel.com>

        * common/config/i386/cpuinfo.h (get_available_features):
        Detect FEATURE_AVX512FP16.
        * common/config/i386/i386-common.c
        (OPTION_MASK_ISA_AVX512FP16_SET,
        OPTION_MASK_ISA_AVX512FP16_UNSET,
        OPTION_MASK_ISA2_AVX512FP16_SET,
        OPTION_MASK_ISA2_AVX512FP16_UNSET): New.
        (OPTION_MASK_ISA2_AVX512BW_UNSET,
        OPTION_MASK_ISA2_AVX512BF16_UNSET): Add AVX512FP16.
        (ix86_handle_option): Handle -mavx512fp16.
        * common/config/i386/i386-cpuinfo.h (enum processor_features):
        Add FEATURE_AVX512FP16.
        * common/config/i386/i386-isas.h: Add entry for AVX512FP16.
        * config.gcc: Add avx512fp16intrin.h.
        * config/i386/avx512fp16intrin.h: New intrinsic header.
        * config/i386/cpuid.h: Add bit_AVX512FP16.
        * config/i386/i386-builtin-types.def: (FLOAT16): New primitive type.
        * config/i386/i386-builtins.c: Support _Float16 type for i386
        backend.
        (ix86_register_float16_builtin_type): New function.
        (ix86_float16_type_node): New.
        * config/i386/i386-c.c (ix86_target_macros_internal): Define
        __AVX512FP16__.
        * config/i386/i386-expand.c (ix86_expand_branch): Support
        HFmode.
        (ix86_prepare_fp_compare_args): Adjust TARGET_SSE_MATH &&
        SSE_FLOAT_MODE_P to SSE_FLOAT_MODE_SSEMATH_OR_HF_P.
        (ix86_expand_fp_movcc): Ditto.
        * config/i386/i386-isa.def: Add PTA define for AVX512FP16.
        * config/i386/i386-options.c (isa2_opts): Add -mavx512fp16.
        (ix86_valid_target_attribute_inner_p): Add avx512fp16 attribute.
        * config/i386/i386.c (ix86_get_ssemov): Use
        vmovdqu16/vmovw/vmovsh for HFmode/HImode scalar or vector.
        (ix86_get_excess_precision): Use
        FLT_EVAL_METHOD_PROMOTE_TO_FLOAT16 when TARGET_AVX512FP16
        existed.
        (sse_store_index): Use SFmode cost for HFmode cost.
        (inline_memory_move_cost): Add HFmode, and perfer SSE cost over
        GPR cost for HFmode.
        (ix86_hard_regno_mode_ok): Allow HImode in sse register.
        (ix86_mangle_type): Add manlging for _Float16 type.
        (inline_secondary_memory_needed): No memory is needed for
        16bit movement between gpr and sse reg under
        TARGET_AVX512FP16.
        (ix86_multiplication_cost): Adjust TARGET_SSE_MATH &&
        SSE_FLOAT_MODE_P to SSE_FLOAT_MODE_SSEMATH_OR_HF_P.
        (ix86_division_cost): Ditto.
        (ix86_rtx_costs): Ditto.
        (ix86_add_stmt_cost): Ditto.
        (ix86_optab_supported_p): Ditto.
        * config/i386/i386.h (VALID_AVX512F_SCALAR_MODE): Add HFmode.
        (SSE_FLOAT_MODE_SSEMATH_OR_HF_P): Add HFmode.
        (PTA_SAPPHIRERAPIDS): Add PTA_AVX512FP16.
        * config/i386/i386.md (mode): Add HFmode.
        (MODE_SIZE): Add HFmode.
        (isa): Add avx512fp16.
        (enabled): Handle avx512fp16.
        (ssemodesuffix): Add sh suffix for HFmode.
        (comm): Add mult, div.
        (plusminusmultdiv): New code iterator.
        (insn): Add mult, div.
        (*movhf_internal): Adjust for avx512fp16 instruction.
        (*movhi_internal): Ditto.
        (*cmpi<unord>hf): New define_insn for HFmode.
        (*ieee_s<ieee_maxmin>hf3): Likewise.
        (extendhf<mode>2): Likewise.
        (trunc<mode>hf2): Likewise.
        (float<floatunssuffix><mode>hf2): Likewise.
        (*<insn>hf): Likewise.
        (cbranchhf4): New expander.
        (movhfcc): Likewise.
        (<insn>hf3): Likewise.
        (mulhf3): Likewise.
        (divhf3): Likewise.
        * config/i386/i386.opt: Add mavx512fp16.
        * config/i386/immintrin.h: Include avx512fp16intrin.h.
        * doc/invoke.texi: Add mavx512fp16.
        * doc/extend.texi: Add avx512fp16 Usage Notes.

2021-09-08  liuhongt  <hongtao.liu@intel.com>

        * common.opt: Support -fexcess-precision=16.
        * config/aarch64/aarch64.c (aarch64_excess_precision): Return
        FLT_EVAL_METHOD_PROMOTE_TO_FLOAT16 when
        EXCESS_PRECISION_TYPE_FLOAT16.
        * config/arm/arm.c (arm_excess_precision): Ditto.
        * config/i386/i386.c (ix86_get_excess_precision): Ditto.
        * config/m68k/m68k.c (m68k_excess_precision): Issue an error
        when EXCESS_PRECISION_TYPE_FLOAT16.
        * config/s390/s390.c (s390_excess_precision): Ditto.
        * coretypes.h (enum excess_precision_type): Add
        EXCESS_PRECISION_TYPE_FLOAT16.
        * doc/tm.texi (TARGET_C_EXCESS_PRECISION): Update documents.
        * doc/tm.texi.in (TARGET_C_EXCESS_PRECISION): Ditto.
        * doc/extend.texi (Half-Precision): Document
        -fexcess-precision=16.
        * flag-types.h (enum excess_precision): Add
        EXCESS_PRECISION_FLOAT16.
        * target.def (excess_precision): Update document.
        * tree.c (excess_precision_type): Set excess_precision_type to
        EXCESS_PRECISION_FLOAT16 when -fexcess-precision=16.

2021-09-08  liuhongt  <hongtao.liu@intel.com>

        * doc/extend.texi: (@node Floating Types): Adjust the wording.
        (@node Half-Precision): Ditto.

2021-09-07  Takayuki 'January June' Suwa  <jjsuwa_sys3175@yahoo.co.jp>

        PR target/102115
        * config/xtensa/xtensa.c (xtensa_emit_move_sequence): Add
        'CONST_INT_P (src)' to the condition of the block that tries to
        eliminate literal when loading integer contant.

2021-09-07  David Faust  <david.faust@oracle.com>

        * doc/extend.texi (BPF Type Attributes) New node.
        Document new preserve_access_index attribute.
        Document new preserve_access_index builtin.
        * doc/invoke.texi: Document -mco-re and -mno-co-re options.

2021-09-07  David Faust  <david.faust@oracle.com>

        * config/bpf/bpf.c: Adjust includes.
        (bpf_handle_preserve_access_index_attribute): New function.
        (bpf_attribute_table): Use it here.
        (bpf_builtins): Add BPF_BUILTIN_PRESERVE_ACCESS_INDEX.
        (bpf_option_override): Handle "-mco-re" option.
        (bpf_asm_init_sections): New.
        (TARGET_ASM_INIT_SECTIONS): Redefine.
        (bpf_file_end): New.
        (TARGET_ASM_FILE_END): Redefine.
        (bpf_init_builtins): Add "__builtin_preserve_access_index".
        (bpf_core_compute, bpf_core_get_index): New.
        (is_attr_preserve_access): New.
        (bpf_expand_builtin): Handle new builtins.
        (bpf_core_newdecl, bpf_core_is_maybe_aggregate_access): New.
        (bpf_core_walk): New.
        (bpf_resolve_overloaded_builtin): New.
        (TARGET_RESOLVE_OVERLOADED_BUILTIN): Redefine.
        (handle_attr): New.
        (pass_bpf_core_attr): New RTL pass.
        * config/bpf/bpf-passes.def: New file.
        * config/bpf/bpf-protos.h (make_pass_bpf_core_attr): New.
        * config/bpf/coreout.c: New file.
        * config/bpf/coreout.h: Likewise.
        * config/bpf/t-bpf (TM_H): Add $(srcdir)/config/bpf/coreout.h.
        (coreout.o): New rule.
        (PASSES_EXTRA): Add $(srcdir)/config/bpf/bpf-passes.def.
        * config.gcc (bpf): Add coreout.h to extra_headers.
        Add coreout.o to extra_objs.
        Add $(srcdir)/config/bpf/coreout.c to target_gtfiles.

2021-09-07  David Faust  <david.faust@oracle.com>

        * btfout.c (get_btf_id): Function is no longer static.
        * ctfc.h: Expose it here.

2021-09-07  David Faust  <david.faust@oracle.com>

        * ctfc.c (ctf_lookup_tree_type): New function.
        * ctfc.h: Likewise.

2021-09-07  David Faust  <david.faust@oracle.com>

        * ctfc.c (ctf_dtd_lookup): Function is no longer static.
        * ctfc.h: Analogous change.

2021-09-07  David Faust  <david.faust@oracle.com>

        * dwarf2out.c (lookup_type_die): Function is no longer static.
        * dwarf2out.h: Expose it here.

2021-09-07  Indu Bhagat  <indu.bhagat@oracle.com>

        * dwarf2ctf.c (ctf_debug_finalize): Make it static.
        (ctf_debug_early_finish): New definition.
        (ctf_debug_finish): Likewise.
        * dwarf2ctf.h (ctf_debug_finalize): Remove declaration.
        (ctf_debug_early_finish): New declaration.
        (ctf_debug_finish): Likewise.
        * dwarf2out.c (dwarf2out_finish): Invoke ctf_debug_finish.
        (dwarf2out_early_finish): Invoke ctf_debug_early_finish.

2021-09-07  Indu Bhagat  <indu.bhagat@oracle.com>

        * config/bpf/bpf.c (bpf_option_override): For BPF backend, disable LTO
        support when compiling for CO-RE.
        * config/bpf/bpf.opt: Add new command line option -mco-re.

2021-09-07  Indu Bhagat  <indu.bhagat@oracle.com>

        * flag-types.h (enum debug_info_type): Add new enum
        DINFO_TYPE_BTF_WITH_CORE.
        (BTF_WITH_CORE_DEBUG): New bitmask.
        * flags.h (btf_with_core_debuginfo_p): New declaration.
        * opts.c (btf_with_core_debuginfo_p): New definition.

2021-09-07  Jason Merrill  <jason@redhat.com>

        * tree.h (error_operand_p): Change to inline function.

2021-09-07  Aldy Hernandez  <aldyh@redhat.com>

        * tree-ssa-threadedge.c (forwarder_block_p): Rename to...
        (empty_block_with_phis_p): ...this.
        (potentially_threadable_block): Same.
        (jump_threader::thread_through_normal_block): Same.

2021-09-07  Eric Botcazou  <ebotcazou@adacore.com>

        PR debug/101947
        * dwarf2out.c (mark_base_types): New overloaded function.
        (dwarf2out_early_finish): Invoke it on the COMDAT type list as well
        as the compilation unit, and call move_marked_base_types afterward.

2021-09-07  H.J. Lu  <hjl.tools@gmail.com>

        PR target/85819
        * config/i386/i386-expand.c (ix86_expand_convert_uns_sisf_sse):
        Enable FMA.
        (ix86_expand_vector_convert_uns_vsivsf): Likewise.

2021-09-07  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/102226
        * tree-vect-loop.c (vect_transform_cycle_phi): Record
        the converted value for the epilogue PHI use.

2021-09-07  Martin Liska  <mliska@suse.cz>

        PR gcov-profile/80223
        * ipa-inline.c (can_inline_edge_p): Similarly to sanitizer
        options, do not inline when no_profile_instrument_function
        attributes are different in early inliner. It's fine to inline
        it after PGO instrumentation.

2021-09-07  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101555
        * tree-ssa-pre.c (translate_vuse_through_block): Do not
        perform an alias walk to determine the validity of the
        mem at the start of the block which is already guaranteed
        by means of prune_clobbered_mems.
        (phi_translate_1): Pass edge to translate_vuse_through_block.

2021-09-07  Xionghu Luo  <luoxhu@linux.ibm.com>

        PR target/97142
        * config/rs6000/rs6000.md (fmod<mode>3): New define_expand.
        (remainder<mode>3): Likewise.

2021-09-07  YunQiang Su  <yunqiang.su@cipunited.com>

        * config/mips/mips.c (mips_file_start): add .module for
          arch and ase.

2021-09-06  Roger Sayle  <roger@nextmovesoftware.com>

        * wide-int.cc (wi::clz): Reorder tests to ensure the result
        is zero for all negative values.

2021-09-06  Tobias Burnus  <tobias@codesourcery.com>

        * doc/invoke.texi (-foffload-options): Fix @opindex.

2021-09-06  H.J. Lu  <hjl.tools@gmail.com>

        PR target/89984
        * config/i386/i386-expand.c (ix86_split_xorsign): Use operands[2].
        * config/i386/i386.md (@xorsign<mode>3_1): Add non-destructive
        source alternative for AVX.

2021-09-06  liuhongt  <hongtao.liu@intel.com>

        PR middle-end/102182
        * optabs.c (expand_fix): Add from1 to avoid from being
        overwritten.

2021-09-06  Eric Botcazou  <ebotcazou@adacore.com>

        * dwarf2out.c (modified_type_die): Deal with all array types earlier
        and use local variable consistently throughout the function.

2021-09-06  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/102207
        * match.pd: Don't demote operands of IFN_{ADD,SUB,MUL}_OVERFLOW if they
        were promoted from signed to wider unsigned type.

2021-09-06  Andrew Pinski  <apinski@marvell.com>

        PR tree-optimization/63184
        * match.pd: Add simplification of pointer_diff of two pointer_plus
        with addr_expr in the first operand of each pointer_plus.
        Add simplificatoin of ne/eq of two pointer_plus with addr_expr
        in the first operand of each pointer_plus.

2021-09-06  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/102176
        * tree-vect-slp.c (vect_slp_gather_vectorized_scalar_stmts):
        New function.
        (vect_bb_slp_scalar_cost): Use the computed set of
        vectorized scalar stmts instead of relying on the out-of-date
        and not accurate PURE_SLP_STMT.
        (vect_bb_vectorization_profitable_p): Compute the set
        of vectorized scalar stmts.

2021-09-05  Aldy Hernandez  <aldyh@redhat.com>

        * gimple-range-path.cc (path_range_query::range_of_stmt): Remove
        GIMPLE_COND special casing.
        (path_range_query::range_defined_in_block): Use range_of_stmt
        instead of calling fold_range directly.

2021-09-05  Aldy Hernandez  <aldyh@redhat.com>

        * gimple-range-path.cc (path_range_query::range_of_expr): Set
        m_undefined_path when appropriate.
        (path_range_query::internal_range_of_expr): Copy from range_of_expr.
        (path_range_query::unreachable_path_p): New.
        (path_range_query::precompute_ranges): Set m_undefined_path.
        * gimple-range-path.h (path_range_query::unreachable_path_p): New.
        (path_range_query::internal_range_of_expr): New.
        * tree-ssa-threadbackward.c (back_threader::find_taken_edge_cond):
        Use unreachable_path_p.

2021-09-05  Aldy Hernandez  <aldyh@redhat.com>

        * tree-ssa-threadbackward.c (back_threader::maybe_register_path):
        Remove argument and call find_taken_edge.
        (back_threader::resolve_phi): Do not calculate taken edge before
        calling maybe_register_path.
        (back_threader::find_paths_to_names): Same.

2021-09-05  Jeff Law  <jlaw@localhost.localdomain>

        * config/h8300/h8300.md (QHSI2 mode iterator): New mode iterator.
        * config/h8300/testcompare.md (store_c): Update name, use new
        QHSI2 iterator.
        (store_neg_c, store_shifted_c): New patterns.

2021-09-03  Segher Boessenkool  <segher@kernel.crashing.org>

        PR target/102107
        * config/rs6000/rs6000-logue.c (rs6000_emit_prologue): On ELFv2 use r11
        instead of r12 for CR save, in all cases.

2021-09-03  Andrew Pinski  <apinski@marvell.com>

        * config/aarch64/aarch64-sve-builtins.cc (register_vector_type):
        Handle error_mark_node as the type of the type_decl.

2021-09-03  Andrew Pinski  <apinski@marvell.com>

        * config/aarch64/aarch64-builtins.c (struct aarch64_simd_type_info):
        Mark with GTY.
        (aarch64_simd_types): Likewise.
        (aarch64_simd_intOI_type_node): Likewise.
        (aarch64_simd_intCI_type_node): Likewise.
        (aarch64_simd_intXI_type_node): Likewise.
        * config/aarch64/aarch64.h (aarch64_fp16_type_node): Likewise.
        (aarch64_fp16_ptr_type_node): Likewise.
        (aarch64_bf16_type_node): Likewise.
        (aarch64_bf16_ptr_type_node): Likewise.

2021-09-03  Aldy Hernandez  <aldyh@redhat.com>

        * range-op.cc (operator_minus::op1_op2_relation_effect): Abstract
        out to...
        (minus_op1_op2_relation_effect): ...here.
        (class operator_pointer_diff): New.
        (operator_pointer_diff::op1_op2_relation_effect): Call
        minus_op1_op2_relation_effect.
        (integral_table::integral_table): Add entry for POINTER_DIFF_EXPR.

2021-09-03  Aldy Hernandez  <aldyh@redhat.com>

        * tree-ssa-threadbackward.c (back_threader::thread_through_all_blocks):
        Add may_peel_loop_headers.
        (back_threader_registry::thread_through_all_blocks): Same.
        (try_thread_blocks): Pass may_peel_loop_headers argument.
        (pass_early_thread_jumps::execute): Same.

2021-09-03  Aldy Hernandez  <aldyh@redhat.com>

        * tree-ssa-threadedge.c (has_phis_p): New.
        (forwarder_block_p): New.
        (potentially_threadable_block): Call forwarder_block_p.
        (jump_threader::thread_around_empty_blocks): Call has_phis_p.
        (jump_threader::thread_through_normal_block): Call
        forwarder_block_p.

2021-09-03  Aldy Hernandez  <aldyh@redhat.com>

        * tree-ssa-threadbackward.c (back_threader::dump): New.
        (back_threader::debug): New.
        (back_threader_profitability::profitable_path_p): Dump blocks
        even if we are bailing early.

2021-09-03  Aldy Hernandez  <aldyh@redhat.com>

        * tree-ssa-threadupdate.c (cancel_thread): New.
        (jump_thread_path_registry::thread_block_1): Use cancel_thread.
        (jump_thread_path_registry::mark_threaded_blocks): Same.
        (jump_thread_path_registry::register_jump_thread): Same.

2021-09-03  Aldy Hernandez  <aldyh@redhat.com>

        * tree-ssa-threadedge.c (jt_state::push): Only call methods for
        which objects are available.
        (jt_state::pop): Same.
        (jt_state::register_equiv): Same.
        (jt_state::register_equivs_on_edge): Same.

2021-09-03  Aldy Hernandez  <aldyh@redhat.com>

        * tree-ssa-threadedge.c (jump_threader::thread_across_edge):
        Move pop until after a thread is registered.

2021-09-03  Aldy Hernandez  <aldyh@redhat.com>

        * tree-ssa-threadupdate.c (debug): New.

2021-09-03  Aldy Hernandez  <aldyh@redhat.com>

        * gimple-range-trace.cc (push_dump_file::push_dump_file): New.
        (push_dump_file::~push_dump_file): New.
        (dump_ranger): Change dump_file temporarily while dumping
        ranger.
        * gimple-range-trace.h (class push_dump_file): New.

2021-09-03  Aldy Hernandez  <aldyh@redhat.com>

        * gimple-range-trace.cc (debug_seed_ranger): Remove static.
        (dump_ranger): Dump function name.

2021-09-03  Aldy Hernandez  <aldyh@redhat.com>

        * gimple-range-path.cc (path_range_query::range_defined_in_block):
        Adjust for non-null.
        (path_range_query::adjust_for_non_null_uses): New.
        (path_range_query::precompute_ranges): Call
        adjust_for_non_null_uses.
        * gimple-range-path.h: Add m_non_null and
        adjust_for_non_null_uses.

2021-09-03  Aldy Hernandez  <aldyh@redhat.com>

        * gimple-range-path.cc (path_range_query::dump): Dump path
        length.
        (path_range_query::precompute_ranges): Dump entire path.

2021-09-03  Aldy Hernandez  <aldyh@redhat.com>

        * value-relation.cc (relation_oracle::debug): New.
        * value-relation.h (relation_oracle::debug): New.

2021-09-03  Aldy Hernandez  <aldyh@redhat.com>

        * tree-ssa-loop-ch.c: Remove unnecessary include file.

2021-09-03  Aldy Hernandez  <aldyh@redhat.com>

        * gimple-range-fold.cc (fold_using_range::postfold_gcond_edges):
        Skip statements with no defining BB.
        * gimple-range-path.cc (path_range_query::range_defined_in_block):
        Do not get confused by statements with no defining BB.

2021-09-03  Aldy Hernandez  <aldyh@redhat.com>

        * gimple-range-fold.cc (adjust_imagpart_expr): Move from
        gimple_range_adjustment.  Add support for constants.
        (adjust_realpart_expr): New.
        (gimple_range_adjustment): Move IMAGPART_EXPR code to
        adjust_imagpart_expr.
        * range-op.cc (integral_table::integral_table): Add entry for
        REALPART_CST.

2021-09-03  Jakub Jelinek  <jakub@redhat.com>

        * omp-expand.c (expand_omp_atomic_pipeline): Use
        IFN_ATOMIC_COMPARE_EXCHANGE instead of
        BUILT_IN_SYNC_VAL_COMPARE_AND_SWAP_? so that memory order
        can be provided.

2021-09-03  Jakub Jelinek  <jakub@redhat.com>

        PR target/102024
        * tree.h (DECL_FIELD_ABI_IGNORED): Changed into rvalue only macro
        that is false if DECL_BIT_FIELD.
        (SET_DECL_FIELD_ABI_IGNORED, DECL_FIELD_CXX_ZERO_WIDTH_BIT_FIELD,
        SET_DECL_FIELD_CXX_ZERO_WIDTH_BIT_FIELD): Define.
        * tree-streamer-out.c (pack_ts_decl_common_value_fields): For
        DECL_BIT_FIELD stream DECL_FIELD_CXX_ZERO_WIDTH_BIT_FIELD instead
        of DECL_FIELD_ABI_IGNORED.
        * tree-streamer-in.c (unpack_ts_decl_common_value_fields): Use
        SET_DECL_FIELD_ABI_IGNORED instead of writing to
        DECL_FIELD_ABI_IGNORED and for DECL_BIT_FIELD use
        SET_DECL_FIELD_CXX_ZERO_WIDTH_BIT_FIELD instead.
        * lto-streamer-out.c (hash_tree): For DECL_BIT_FIELD hash
        DECL_FIELD_CXX_ZERO_WIDTH_BIT_FIELD instead of DECL_FIELD_ABI_IGNORED.

2021-09-03  liuhongt  <hongtao.liu@intel.com>

        PR target/102166
        * config/i386/amxbf16intrin.h : Remove macro check for __AMX_BF16__.
        * config/i386/amxint8intrin.h : Remove macro check for __AMX_INT8__.
        * config/i386/amxtileintrin.h : Remove macro check for __AMX_TILE__.

2021-09-02  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/17506
        PR testsuite/37182
        * tree-ssa-uninit.c (warn_uninit): Remove conditional guarding note.

2021-09-02  Richard Biener  <rguenther@suse.de>

        * tree-ssa-loop-im.c (fill_always_executed_in_1): Refine
        fix for PR78185 and continue processing when leaving
        finite inner loops.

2021-09-02  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/99591
        * match.pd: Demote operands of IFN_{ADD,SUB,MUL}_OVERFLOW if they
        were promoted.

2021-09-02  Richard Biener  <rguenther@suse.de>

        Revert:
        2021-09-02  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/102155
        * tree-ssa-loop-im.c (fill_always_executed_in_1): Iterate
        over a part of the RPO array and do not recurse here.
        Dump blocks marked as always executed.
        (fill_always_executed_in): Walk over the RPO array and
        process loops whose header we run into.
        (loop_invariant_motion_in_fun): Compute the first RPO
        using rev_post_order_and_mark_dfs_back_seme in iteration
        order and pass that to fill_always_executed_in.

2021-09-02  liuhongt  <hongtao.liu@intel.com>

        * config/i386/i386-modes.def (FLOAT_MODE): Define ieee HFmode.
        * config/i386/i386.c (enum x86_64_reg_class): Add
        X86_64_SSEHF_CLASS.
        (merge_classes): Handle X86_64_SSEHF_CLASS.
        (examine_argument): Ditto.
        (construct_container): Ditto.
        (classify_argument): Ditto, and set HFmode/HCmode to
        X86_64_SSEHF_CLASS.
        (function_value_32): Return _FLoat16/Complex Float16 by
        %xmm0.
        (function_value_64): Return _Float16/Complex Float16 by SSE
        register.
        (ix86_print_operand): Handle CONST_DOUBLE HFmode.
        (ix86_secondary_reload): Require gpr as intermediate register
        to store _Float16 from sse register when sse4 is not
        available.
        (ix86_libgcc_floating_mode_supported_p): Enable _FLoat16 under
        sse2.
        (ix86_scalar_mode_supported_p): Ditto.
        (TARGET_LIBGCC_FLOATING_MODE_SUPPORTED_P): Defined.
        * config/i386/i386.h (VALID_SSE2_REG_MODE): Add HFmode.
        (VALID_INT_MODE_P): Add HFmode and HCmode.
        * config/i386/i386.md (*pushhf_rex64): New define_insn.
        (*pushhf): Ditto.
        (*movhf_internal): Ditto.
        * doc/extend.texi (Half-Precision Floating Point): Documemt
        _Float16 for x86.

2021-09-02  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/102155
        * tree-ssa-loop-im.c (fill_always_executed_in_1): Iterate
        over a part of the RPO array and do not recurse here.
        Dump blocks marked as always executed.
        (fill_always_executed_in): Walk over the RPO array and
        process loops whose header we run into.
        (loop_invariant_motion_in_fun): Compute the first RPO
        using rev_post_order_and_mark_dfs_back_seme in iteration
        order and pass that to fill_always_executed_in.

2021-09-02  YunQiang Su  <syq@debian.org>

        Revert:
        2021-08-31  YunQiang Su  <yunqiang.su@cipunited.com>

        * config/mips/mips.c (mips_module_isa_name): New.
          mips_file_start: add .module mipsREV to all asm output

2021-09-01  Jeff Law  <jlaw@localhost.localdomain>

        PR tree-optimization/102152
        * tree-ssa-dom.c (dom_opt_dom_walker::optimize_stmt): Reduce a vector
        comparison to a scalar comparison before calling
        update_stmt_if_modified.

2021-09-01  Andrew Pinski  <apinski@marvell.com>

        PR target/101934
        * config/aarch64/aarch64.c (aarch64_expand_setmem):
        Check STRICT_ALIGNMENT before creating an overlapping
        store.

2021-09-01  Martin Sebor  <msebor@redhat.com>

        * gimple-ssa-warn-access.cc (get_size_range): Add argument.
        (check_access): Pass additional argument.
        (check_memop_access): Remove template and make a member function.
        (maybe_check_dealloc_call): Make a pass_waccess member function.
        (class pass_waccess): Add, rename, and remove members.
        (pass_waccess::pass_waccess): Adjust to name change.
        (pass_waccess::~pass_waccess): Same.
        (check_alloca): Make a member function.
        (check_alloc_size_call): Same.
        (check_strcat): Same.
        (check_strncat): Same.
        (check_stxcpy): Same.
        (check_stxncpy): Same.
        (check_strncmp): Same.
        (maybe_warn_rdwr_sizes): Rename...
        (pass_waccess::maybe_check_access_sizes): ...to this.
        (pass_waccess::check_call): Adjust to name changes.
        (pass_waccess::maybe_check_dealloc_call): Make a pass_waccess member
        function.
        (pass_waccess::execute): Adjust to name changes.
        * gimple-ssa-warn-access.h (check_memop_access): Remove.
        * pointer-query.cc (access_ref::phi): Handle null pointer.
        (access_ref::inform_access): Same.
        (pointer_query::put_ref): Modify a cached value, not a copy of it.
        (pointer_query::dump): New function.
        (compute_objsize_r): Avoid overwriting access_ref::bndrng.  Cache
        more results.
        * pointer-query.h (pointer_query::dump): Declare.
        * tree-ssa-strlen.c (get_range): Simplify.  Use function query.
        (dump_strlen_info): Use function query.
        (printf_strlen_execute): Factor code out into pointer_query::put_ref.

2021-09-01  Thomas Schwinge  <thomas@codesourcery.com>

        * tree.c (walk_tree_1) <OMP_CLAUSE>: Simplify.

2021-09-01  Iain Sandoe  <iain@sandoe.co.uk>

        * doc/extend.texi: Document unavailable attribute.
        * print-tree.c (print_node): Handle unavailable attribute.
        * tree-core.h (struct tree_base): Add a bit to carry unavailability.
        * tree.c (error_unavailable_use): New.
        * tree.h (TREE_UNAVAILABLE): New.
        (error_unavailable_use): New.

2021-09-01  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/102124
        * tree-vect-patterns.c (vect_recog_widen_op_pattern): For ORIG_CODE
        MINUS_EXPR, if itype is unsigned with smaller precision than type,
        add an extra cast to signed variant of itype to ensure sign-extension.

2021-09-01  Martin Liska  <mliska@suse.cz>

        * graph.c (draw_cfg_node_succ_edges): Do not color fallthru
          edges and rather use colors for TRUE and FALSE edges.

2021-09-01  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/93491
        * tree-ssa-pre.c (compute_avail): Set BB_MAY_NOTRETURN
        after processing the stmt itself.  Do not consider
        pure functions possibly not returning.  Properly avoid
        adding possibly trapping calls to EXP_GEN when there's
        a preceeding possibly not returning call.
        * tree-ssa-sccvn.c (vn_reference_may_trap): Conservatively
        not handle calls.

2021-09-01  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/102139
        * tree-vectorizer.h (vec_base_alignments): Adjust hash-map
        type to record a std::pair of the stmt-info and the innermost
        loop behavior.
        (dr_vec_info::group): New member.
        * tree-vect-data-refs.c (vect_record_base_alignment): Adjust.
        (vect_compute_data_ref_alignment): Verify the recorded
        base alignment can be used.
        (data_ref_pair): Remove.
        (dr_group_sort_cmp): Adjust.
        (vect_analyze_data_ref_accesses): Store the group-ID in the
        dr_vec_info and operate on a vector of dr_vec_infos.

2021-09-01  YunQiang Su  <yunqiang.su@cipunited.com>

        * read-md.c (md_reader::handle_enum): support value assignation.
        * doc/md.texi: record define_c_enum value assignation support.

2021-09-01  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/102141
        * gimple-ssa-store-merging.c (bswap_view_convert): Add BEFORE
        argument.  If false, emit stmts after gsi instead of before, and
        with GSI_NEW_STMT.
        (bswap_replace): Adjust callers.  When converting output of bswap,
        emit VIEW_CONVERT prepratation stmts after a copy of gsi instead
        of before it.

2021-09-01  liuhongt  <hongtao.liu@intel.com>

        * emit-rtl.c (validate_subreg): Get rid of all float-int
        special cases.

2021-09-01  liuhongt  <hongtao.liu@intel.com>

        Revert:
        2021-08-30  liuhongt  <hongtao.liu@intel.com>

        * expmed.c (extract_bit_field_1): Make sure we're playing with
        integral modes before call extract_integral_bit_field.
        (extract_integral_bit_field): Add a parameter of type
        scalar_int_mode which corresponds to of tmode.
        And call extract_and_convert_fixed_bit_field instead of
        extract_fixed_bit_field and convert_extracted_bit_field.
        (extract_and_convert_fixed_bit_field): New function, it's a
        combination of extract_fixed_bit_field and
        convert_extracted_bit_field.

2021-08-31  Thomas Schwinge  <thomas@codesourcery.com>

        * tree.c (walk_tree_1) <OMP_CLAUSE_TILE>: Handle three operands.

2021-08-31  Thomas Schwinge  <thomas@codesourcery.com>

        * omp-general.h (omp_is_reference): Rename to...
        (omp_privatize_by_reference): ... this.  Adjust all users...
        * omp-general.c: ... here, ...
        * gimplify.c: ... here, ...
        * omp-expand.c: ... here, ...
        * omp-low.c: ... here.

2021-08-31  Martin Sebor  <msebor@redhat.com>

        * gimple-ssa-warn-access.cc (maybe_warn_alloc_args_overflow): Test
        pointer element for equality to zero, not that of the cotaining
        array.

2021-08-31  Martin Sebor  <msebor@redhat.com>

        * gcc-rich-location.h (gcc_rich_location): Make ctor explicit.

2021-08-31  Martin Sebor  <msebor@redhat.com>

        * function.h (function): Add comments.
        (get_range_query): Same.  Add attribute returns nonnull.

2021-08-31  Roger Sayle  <roger@nextmovesoftware.com>

        * expr.c (convert_modes): Don't use subreg_promoted_mode on a
        SUBREG if it can't be guaranteed to a SUBREG_PROMOTED_VAR_P set.
        Instead use the standard (safer) is_a <scalar_int_mode> idiom.

2021-08-31  Jeff Law  <jlaw@localhost.localdomain>

        * config.gcc (cris-*-elf, cris-*-none): Remove dbxelf.h from
        tm_file.
        (m32r-*-elf, m32rle-*-elf, m32r-*-linux): Likewise.
        (mn10300-*-*, am33_2.0-*-linux*): Likewise.
        (xtensa*-*-elf, xtensa*-*-linux, xtensa*-*-uclinux): Likewise.
        (m32c-*-elf*, m32c-*-rtems*): Likewise.
        * config/cris/cris.h (DBX_NO_XREFS): Remove.
        (DBX_CONTIN_LENGTH, DBX_CONTIN_CHAR): Likewise.
        * config/m32r/m32r.h (DBXOUT_SOURCE_LINE): Likewise.
        (DBX_DEBUGGING_INFO, DBX_CONTIN_LENGTH): Likewise.
        * config/mn10300/mn10300.h (DEFAULT_GDB_EXTENSIONS): Likewise.
        * config/mn10300/linux.h (DBX_REGISTER_NAMES): Likewise.

2021-08-31  Marcel Vollweiler  <marcel@codesourcery.com>

        * gimplify.c (gimplify_scan_omp_clauses): Error handling. 'ancestor' only
        allowed on target constructs and only with particular other clauses.
        * omp-expand.c (expand_omp_target): Output of 'sorry, not supported' if
        'ancestor' is used.
        * omp-low.c (check_omp_nesting_restrictions): Error handling. No nested OpenMP
        structs when 'ancestor' is used.
        (scan_omp_1_stmt): No usage of OpenMP runtime routines in a target region when
        'ancestor' is used.
        * tree-pretty-print.c (dump_omp_clause): Append 'ancestor'.
        * tree.h (OMP_CLAUSE_DEVICE_ANCESTOR): Define macro.

2021-08-31  Roger Sayle  <roger@nextmovesoftware.com>

        * expr.c (convert_modes): Preserve SUBREG_PROMOTED_VAR_P when
        creating a (wider) partial subreg from a SUBREG_PROMOTED_VAR_P
        subreg.
        * simplify-rtx.c (simplify_unary_operation_1) [SIGN_EXTEND]:
        Likewise, preserve SUBREG_PROMOTED_VAR_P when creating a (wider)
        partial subreg from a SUBREG_PROMOTED_VAR_P subreg.  Generate
        SIGN_EXTEND of the SUBREG_REG when a subreg would be paradoxical.
        [ZERO_EXTEND]: Likewise, preserve SUBREG_PROMOTED_VAR_P when
        creating a (wider) partial subreg from a SUBREG_PROMOTED_VAR_P
        subreg.  Generate ZERO_EXTEND of the SUBREG_REG when a subreg
        would be paradoxical.

2021-08-31  Roger Sayle  <roger@nextmovesoftware.com>

        * combine.c (combine_simplify_rtx): Avoid converting an explicit
        TRUNCATE into a lowpart SUBREG on !TRULY_NOOP_TRUNCATION targets.
        * simplify-rtx.c (simplify_unary_operation_1): Likewise.

2021-08-31  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/102142
        * tree-vect-slp.c (vect_bb_vectorization_profitable_p): Fix
        condition under which to unset the visited flag.

2021-08-31  Richard Biener  <rguenther@suse.de>

        PR middle-end/102129
        * tree-ssa-ter.c (find_replaceable_in_bb): Do not move
        possibly trapping expressions across calls.

2021-08-31  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/102134
        * tree-ssa-ccp.c (bit_value_binop) <case RSHIFT_EXPR>: If sgn is
        UNSIGNED and r1val | r1mask has MSB set, ensure lzcount doesn't
        become negative.

2021-08-31  Andrew Pinski  <apinski@marvell.com>

        PR driver/79181
        * collect-utils.c (setup_signals): New declaration.
        * collect-utils.h (setup_signals): New function.
        * collect2.c (handler): Delete.
        (main): Instead of manually setting up the signals,
        just call setup_signals.
        * lto-wrapper.c (main): Likewise.

2021-08-31  Andrew Pinski  <apinski@marvell.com>

        PR target/56337
        * config/i386/i386-protos.h (x86_output_aligned_bss):
        Change align argument to unsigned type.
        (x86_elf_aligned_decl_common): Likewise.
        * config/i386/i386.c (x86_elf_aligned_decl_common): Likewise.
        (x86_output_aligned_bss): Likewise.

2021-08-31  YunQiang Su  <yunqiang.su@cipunited.com>

        * config/mips/mips.c (mips_module_isa_name): New.
          mips_file_start: add .module mipsREV to all asm output

2021-08-31  YunQiang Su  <yunqiang.su@cipunited.com>

        * config/mips/mips.h (struct mips_cpu_info): define enum mips_isa;
          use enum instead of int for 'isa' member.
        * config.gcc, config/mips/mips.c, config/mips/mips-cpus.def,
          config/mips/netbsd.h: replace hardcoded numbers with enum.

2021-08-31  liuhongt  <hongtao.liu@intel.com>

        * config/i386/sse.md (*<avx512>_ucmp<mode>3_1): Change from
        define_split to define_insn_and_split.
        (*avx2_eq<mode>3): Removed.
        (<avx512>_eq<mode>3<mask_scalar_merge_name>): Adjust pattern
        (<avx512>_eq<mode>3<mask_scalar_merge_name>_1): Rename to ..
        (*<avx512>_eq<mode>3<mask_scalar_merge_name>_1): .. this, and
        adjust pattern.
        (*avx2_gt<mode>3): Removed.
        (<avx512>_gt<mode>3<mask_scalar_merge_name>): Change from
        define_insn to define_expand, and adjust pattern.
        (UNSPEC_MASKED_EQ, UNSPEC_MASKED_GT): Removed.

2021-08-30  David Malcolm  <dmalcolm@redhat.com>

        PR analyzer/99260
        * Makefile.in (ANALYZER_OBJS): Add analyzer/call-info.o.

2021-08-30  Jason Merrill  <jason@redhat.com>

        * doc/invoke.texi: Document -Wmissing-requires.

2021-08-30  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000-call.c (rs6000_init_builtins): Remove
        TARGET_EXTRA_BUILTINS guard.

2021-08-30  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000-call.c (rs6000_init_builtins): Change
        initialization of V2DI_type_node and unsigned_V2DI_type_node.

2021-08-30  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/darwin.h (SUBTARGET_INIT_BUILTINS): Use the new
        decl when new_builtins_are_live.
        * config/rs6000/rs6000-builtin-new.def (__builtin_cfstring): New
        built-in.

2021-08-30  Pat Haugen  <pthaugen@linux.ibm.com>

        * config/rs6000/rs6000-cpus.def (ISA_3_1_MASKS_SERVER): Add
        OPTION_MASK_P10_FUSION_2STORE.
        (POWERPC_MASKS): Likewise.
        * config/rs6000/rs6000.c (rs6000_option_override_internal): Enable
        store fusion for Power10.
        (is_fusable_store): New.
        (power10_sched_reorder): Likewise.
        (rs6000_sched_reorder): Do Power10 specific reordering.
        (rs6000_sched_reorder2): Likewise.
        * config/rs6000/rs6000.opt: Add new option.

2021-08-30  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/102128
        * tree-vect-slp.c (vect_bb_vectorization_profitable_p):
        Move scanning for if-converted scalar code to the caller
        and instead delay clearing the visited flag for profitable
        subgraphs.
        (vect_slp_region): Cost all subgraphs before scheduling.
        For if-converted BB vectorization scan for scalar COND_EXPRs
        and do not vectorize if any found and the cost model is
        very-cheap.

2021-08-30  Richard Biener  <rguenther@suse.de>

        * common.opt (fexceptions): Mark
        EnabledBy(fnon-call-exceptions).
        * doc/invoke.texi (fnon-call-exceptions): Document this
        enables -fexceptions.

2021-08-30  Sebastian Huber  <sebastian.huber@embedded-brains.de>

        * tsystem.h (abort): Define abort() if inhibit_libc is defined and it
        is not already defined.

2021-08-30  liuhongt  <hongtao.liu@intel.com>

        * expmed.c (extract_bit_field_1): Make sure we're playing with
        integral modes before call extract_integral_bit_field.
        (extract_integral_bit_field): Add a parameter of type
        scalar_int_mode which corresponds to of tmode.
        And call extract_and_convert_fixed_bit_field instead of
        extract_fixed_bit_field and convert_extracted_bit_field.
        (extract_and_convert_fixed_bit_field): New function, it's a
        combination of extract_fixed_bit_field and
        convert_extracted_bit_field.

2021-08-29  Iain Sandoe  <iain@sandoe.co.uk>

        * config/darwin.c (darwin_libc_has_function): Do not run
        the checks for x86 or modern Darwin.  Make sure that there
        is a value set for darwin_macosx_version_min before testing.

2021-08-29  Iain Sandoe  <iain@sandoe.co.uk>

        * config/i386/darwin.h (CLEAR_INSN_CACHE): New.

2021-08-28  Jan Hubicka  <hubicka@ucw.cz>

        * ipa-modref-tree.h (modref_access_node::merge): Break out
        logic combining offsets and logic merging ranges to ...
        (modref_access_node::combined_offsets): ... here
        (modref_access_node::update2): ... here
        (modref_access_node::closer_pair_p): New member function.
        (modref_access_node::forced_merge): New member function.
        (modre_ref_node::insert): Do merging when table is full.

2021-08-28  YunQiang Su  <yunqiang.su@cipunited.com>

        PR target/102089
        * config.gcc: MIPS: use N64 ABI by default if the triple end
          with -gnuabi64, which is used by Debian since 2013.

2021-08-28  Alexandre Oliva  <oliva@adacore.com>

        * ipa-modref.c (analyze_function): Skip debug stmts.
        * tree-inline.c (estimate_num_insn): Consider builtins even
        without a cgraph_node.

2021-08-27  Jeff Law  <jlaw@localhost.localdomain>

        * config/h8300/bitfield.md (cstore<mode>4): Remove expander.
        * config/h8300/h8300.c (h8300_expand_branch): Remove function.
        * config/h8300/h8300-protos.h (h8300_expadn_branch): Remove prototype.
        * config/h8300/h8300.md (eqne): New code iterator.
        (geultu, geultu_to_c): Similarly.
        * config/h8300/testcompare.md (cstore<mode>4): Dummy expander.
        (store_c_<mode>, store_c_i_<mode>): New define_insn_and_splits
        (cmp<mode>_c): New pattern

2021-08-27  Jeff Law  <jlaw@localhost.localdomain>

        * tree-ssa-dom.c (reduce_vector_comparison_to_scalar_comparison): New
        function.
        (dom_opt_dom_walker::optimize_stmt): Use it.

2021-08-27  Iain Sandoe  <iain@sandoe.co.uk>

        * config/darwin.c (finalize_ctors): Add a section-start linker-
        visible symbol.
        (finalize_dtors): Likewise.
        * config/darwin.h (MIN_LD64_INIT_TERM_START_LABELS): New.

2021-08-27  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000-call.c (rs6000-builtins.h): New #include.
        (rs6000_init_builtins): Call rs6000_init_generated_builtins.  Skip the
        old initialization logic when new builtins are enabled.
        * config/rs6000/rs6000-gen-builtins.c (write_decls): Rename
        rs6000_autoinit_builtins to rs6000_init_generated_builtins.
        (write_init_file): Likewise.

2021-08-27  Iain Sandoe  <iain@sandoe.co.uk>

        * configure.ac (darwin2[[0-9]]* | darwin19*): Alter use of
        gcc_GAS_CHECK_FEATURE to remove an extraneous parameter.
        (amdgcn-* | gcn-*) Likewise.

2021-08-27  Anthony Sharp  <anthonysharp15@gmail.com>

        * symbol-summary.h: Added missing template keyword.

2021-08-27  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/45178
        * tree-ssa-dce.c (find_obviously_necessary_stmts): For
        infinite loops without exit do not mark control dependent
        edges of the latch necessary.

2021-08-27  konglin1  <lingling.kong@intel.com>

        PR target/101472
        * config/i386/sse.md: (<avx512>scattersi<mode>): Add mask operand to
        UNSPEC_VSIBADDR.
        (<avx512>scattersi<mode>): Likewise.
        (*avx512f_scattersi<VI48F:mode>): Merge mask operand to set_dest.
        (*avx512f_scatterdi<VI48F:mode>): Likewise

2021-08-27  Kewen Lin  <linkw@linux.ibm.com>

        * config/rs6000/rs6000.c (rs6000_builtin_md_vectorized_function): Add
        support for built-in functions MISC_BUILTIN_DIVWE, MISC_BUILTIN_DIVWEU,
        MISC_BUILTIN_DIVDE, MISC_BUILTIN_DIVDEU, P10_BUILTIN_CFUGED,
        P10_BUILTIN_CNTLZDM, P10_BUILTIN_CNTTZDM, P10_BUILTIN_PDEPD and
        P10_BUILTIN_PEXTD on Power10.

2021-08-27  Kewen Lin  <linkw@linux.ibm.com>

        * config/rs6000/rs6000-call.c (builtin_function_type): Add unsigned
        signedness for some Power10 bifs.

2021-08-27  David Edelsohn  <dje.gcc@gmail.com>

        PR target/102068
        * config/rs6000/rs6000.c (rs6000_adjust_field_align): Use
        computed alignment if the entire struct has attribute packed.

2021-08-27  liuhongt  <hongtao.liu@intel.com>

        PR target/98167
        PR target/43147
        * config/i386/i386.c (ix86_gimple_fold_builtin): Fold
        IX86_BUILTIN_SHUFPD512, IX86_BUILTIN_SHUFPS512,
        IX86_BUILTIN_SHUFPD256， IX86_BUILTIN_SHUFPS，
        IX86_BUILTIN_SHUFPS256.
        (ix86_masked_all_ones): New function.

2021-08-26  Uroš Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.md (*btr<mode>_1): Call force_reg unconditionally.
        (conditional moves with memory inputs splitters): Ditto.
        * config/i386/sse.md (one_cmpl<mode>2): Simplify.

2021-08-26  Jan Hubicka  <hubicka@ucw.cz>

        * ipa-modref-tree.h (modref_access_node::try_merge_with): Restart
        search after merging.

2021-08-26  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000-overload.def: Add remaining overloads.

2021-08-26  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000-builtin-new.def: Add cell stanza.

2021-08-26  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000-builtin-new.def: Add ieee128-hw, dfp,
        crypto, and htm stanzas.

2021-08-26  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000-builtin-new.def: Add mma stanza.

2021-08-26  Martin Sebor  <msebor@redhat.com>

        * tree-ssa-uninit.c (warn_uninit): Refactor and simplify.
        (warn_uninit_phi_uses): Remove argument from calls to warn_uninit.
        (warn_uninitialized_vars): Same.  Reduce visibility of locals.
        (warn_uninitialized_phi): Same.

2021-08-26  Roger Sayle  <roger@nextmovesoftware.com>

        * tree-ssa-ccp.c (get_individual_bits): Helper function to
        extract the individual bits from a widest_int constant (mask).
        (gray_code_bit_flips): New read-only table for effiently
        enumerating permutations/combinations of bits.
        (bit_value_binop) [LROTATE_EXPR, RROTATE_EXPR]: Handle rotates
        by unknown counts that are guaranteed less than the target
        precision and four or fewer unknown bits by enumeration.
        [LSHIFT_EXPR, RSHIFT_EXPR]: Likewise, also handle shifts by
        enumeration under the same conditions.  Handle remaining
        shifts as a mask based upon the minimum possible shift value.

2021-08-26  Roger Sayle  <roger@nextmovesoftware.com>
            Richard Biener  <rguenther@suse.de>

        * match.pd (shift transformations): Remove a redundant
        !POINTER_TYPE_P check.

2021-08-26  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/102057
        * config/i386/i386.md (cmove reg-reg move elimination peephole2s):
        Set all_regs to true in the call to replace_rtx.

2021-08-26  Jan Hubicka  <hubicka@ucw.cz>

        * ipa-modref-tree.c (test_insert_search_collapse): Update test.
        * ipa-modref-tree.h (modref_base_node::insert): Be smarter when
        hiting --param modref-max-refs limit.
        (modref_tree:insert_base): Be smarter when hitting
        --param modref-max-bases limit. Add new parameter REF.
        (modref_tree:insert): Update.
        (modref_tree:merge): Update.
        * ipa-modref.c (read_modref_records): Update.

2021-08-26  Jan Hubicka  <hubicka@ucw.cz>

        * params.opt: (modref-max-adjustments): Add full stop.

2021-08-26  Jan Hubicka  <hubicka@ucw.cz>

        * ipa-modref-tree.h (modref_ref_node::verify): New member
        functoin.
        (modref_ref_node::insert): Use it.
        (modref_ref_node::try_mere_with): Fix off by one error.

2021-08-26  Martin Liska  <mliska@suse.cz>
            Stefan Kneifel  <stefan.kneifel@bluewin.ch>

        * cgraph.h (create_version_clone_with_body): Add new parameter.
        * cgraphclones.c: Likewise.
        * multiple_target.c (create_dispatcher_calls): Do not use
        numbered suffixes.
        (create_target_clone): Likewise here.

2021-08-26  Jonathan Yong  <10walls@gmail.com>

        * doc/extend.texi: Add note about reserved priorities
        to the constructor attribute.

2021-08-25  Martin Sebor  <msebor@redhat.com>

        * gimple-range-cache.cc (ssa_global_cache::dump): Avoid printing
        range table header alone.
        * gimple-range.cc (gimple_ranger::export_global_ranges): Same.

2021-08-25  Jan Hubicka  <hubicka@ucw.cz>

        * doc/invoke.texi: Document --param modref-max-adjustments.
        * ipa-modref-tree.c (test_insert_search_collapse): Update.
        (test_merge): Update.
        * ipa-modref-tree.h (struct modref_access_node): Add adjustments;
        (modref_access_node::operator==): Fix handling of access ranges.
        (modref_access_node::contains): Constify parameter; handle also
        mismatched parm offsets.
        (modref_access_node::update): New function.
        (modref_access_node::merge): New function.
        (unspecified_modref_access_node): Update constructor.
        (modref_ref_node::insert_access): Add record_adjustments parameter;
        handle merging.
        (modref_ref_node::try_merge_with): New private function.
        (modref_tree::insert): New record_adjustments parameter.
        (modref_tree::merge): New record_adjustments parameter.
        (modref_tree::copy_from): Update.
        * ipa-modref.c (dump_access): Dump adjustments field.
        (get_access): Update constructor.
        (record_access): Update call of insert.
        (record_access_lto): Update call of insert.
        (merge_call_side_effects): Add record_adjustments parameter.
        (get_access_for_fnspec): Update.
        (process_fnspec): Update.
        (analyze_call): Update.
        (analyze_function): Update.
        (read_modref_records): Update.
        (ipa_merge_modref_summary_after_inlining): Update.
        (propagate_unknown_call): Update.
        (modref_propagate_in_scc): Update.
        * params.opt (param-max-modref-adjustments=): New.

2021-08-25  Michael Meissner  <meissner@linux.ibm.com>

        * config/rs6000/vsx.md (UNSPEC_XXSPLTIDP): Rename from
        UNSPEC_XXSPLTID.
        (xxspltiw_v4si): Use vecperm type attribute.
        (xxspltiw_v4si_inst): Use vecperm type attribute.
        (xxspltiw_v4sf_inst): Likewise.
        (xxspltidp_v2df): Use vecperm type attribute.  Use
        UNSPEC_XXSPLTIDP instead of UNSPEC_XXSPLTID.
        (xxspltidp_v2df_inst): Likewise.
        (xxsplti32dx_v4si): Use vecperm type attribute.
        (xxsplti32dx_v4si_inst): Likewise.
        (xxsplti32dx_v4sf_inst): Likewise.
        (xxblend_<mode>): Likewise.
        (xxpermx): Likewise.
        (xxpermx_inst): Likewise.
        (xxeval): Likewise.

2021-08-25  Lewis Hyatt  <lhyatt@gmail.com>

        PR other/93067
        * coretypes.h (typedef diagnostic_input_charset_callback): Declare.
        * diagnostic.c (diagnostic_initialize_input_context): New function.
        * diagnostic.h (diagnostic_initialize_input_context): Declare.
        * input.c (default_charset_callback): New function.
        (file_cache::initialize_input_context): New function.
        (file_cache_slot::create): Added ability to convert the input
        according to the input context.
        (file_cache::file_cache): Initialize the new input context.
        (class file_cache_slot): Added new m_alloc_offset member.
        (file_cache_slot::file_cache_slot): Initialize the new member.
        (file_cache_slot::~file_cache_slot): Handle potentially offset buffer.
        (file_cache_slot::maybe_grow): Likewise.
        (file_cache_slot::needs_read_p): Handle NULL fp, which is now possible.
        (file_cache_slot::get_next_line): Likewise.
        * input.h (class file_cache): Added input context member.

2021-08-25  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/102046
        * tree-vect-slp.c (vect_build_slp_tree_2): Conservatively
        update ->any_pattern when swapping operands.

2021-08-25  Hongyu Wang  <hongyu.wang@intel.com>

        PR target/101716
        * config/i386/i386.c (ix86_live_on_entry): Adjust comment.
        (ix86_decompose_address): Remove retval check for ASHIFT,
        allow non-canonical zero extend if AND mask covers ASHIFT
        count.
        (ix86_legitimate_address_p): Adjust condition for decompose.
        (ix86_rtx_costs): Adjust cost for lea with non-canonical
        zero-extend.
        Co-Authored by: Uros Bizjak <ubizjak@gmail.com>

2021-08-25  Jiufu Guo  <guojiufu@linux.ibm.com>

        PR tree-optimization/101145
        * tree-ssa-loop-niter.c (number_of_iterations_until_wrap):
        New function.
        (number_of_iterations_lt): Invoke above function.
        (adjust_cond_for_loop_until_wrap):
        Merge to number_of_iterations_until_wrap.
        (number_of_iterations_cond): Update invokes for
        adjust_cond_for_loop_until_wrap and number_of_iterations_lt.

2021-08-25  konglin1  <lingling.kong@intel.com>

        PR target/101471
        * config/i386/avx512dqintrin.h (_mm512_fpclass_ps_mask): Fix
        macro define in O0.
        (_mm512_mask_fpclass_ps_mask): Ditto.

2021-08-25  Kewen Lin  <linkw@linux.ibm.com>

        * config/rs6000/altivec.md (vec_unpacku_hi_v16qi): Remove.
        (vec_unpacku_hi_v8hi): Likewise.
        (vec_unpacku_lo_v16qi): Likewise.
        (vec_unpacku_lo_v8hi): Likewise.
        (vec_unpacku_hi_<VP_small_lc>): New define_expand.
        (vec_unpacku_lo_<VP_small_lc>): Likewise.

2021-08-24  David Edelsohn  <dje.gcc@gmail.com>

        * config/rs6000/aix.h (SYSTEM_IMPLICIT_EXTERN_C): Delete.
        * config/rs6000/aix71.h (SYSTEM_IMPLICIT_EXTERN_C): Define.
        * config/rs6000/aix72.h (SYSTEM_IMPLICIT_EXTERN_C): Define.
        * config/rs6000/aix73.h (TARGET_AIX_VERSION): Increase to 73.

2021-08-24  Roger Sayle  <roger@nextmovesoftware.com>

        PR middle-end/102031
        * simplify-rtx.c (simplify_truncation): When comparing precisions
        use "subreg_prec" variable, not "subreg_mode".

2021-08-24  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000-builtin-new.def: Add power10 and power10-64
        stanzas.

2021-08-24  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000-call.c (rs6000_init_builtins): Initialize
        various pointer type nodes.
        * config/rs6000/rs6000.h (rs6000_builtin_type_index): Add enum
        values for various pointer types.
        (ptr_V16QI_type_node): New macro.
        (ptr_V1TI_type_node): New macro.
        (ptr_V2DI_type_node): New macro.
        (ptr_V2DF_type_node): New macro.
        (ptr_V4SI_type_node): New macro.
        (ptr_V4SF_type_node): New macro.
        (ptr_V8HI_type_node): New macro.
        (ptr_unsigned_V16QI_type_node): New macro.
        (ptr_unsigned_V1TI_type_node): New macro.
        (ptr_unsigned_V8HI_type_node): New macro.
        (ptr_unsigned_V4SI_type_node): New macro.
        (ptr_unsigned_V2DI_type_node): New macro.
        (ptr_bool_V16QI_type_node): New macro.
        (ptr_bool_V8HI_type_node): New macro.
        (ptr_bool_V4SI_type_node): New macro.
        (ptr_bool_V2DI_type_node): New macro.
        (ptr_bool_V1TI_type_node): New macro.
        (ptr_pixel_type_node): New macro.
        (ptr_intQI_type_node): New macro.
        (ptr_uintQI_type_node): New macro.
        (ptr_intHI_type_node): New macro.
        (ptr_uintHI_type_node): New macro.
        (ptr_intSI_type_node): New macro.
        (ptr_uintSI_type_node): New macro.
        (ptr_intDI_type_node): New macro.
        (ptr_uintDI_type_node): New macro.
        (ptr_intTI_type_node): New macro.
        (ptr_uintTI_type_node): New macro.
        (ptr_long_integer_type_node): New macro.
        (ptr_long_unsigned_type_node): New macro.
        (ptr_float_type_node): New macro.
        (ptr_double_type_node): New macro.
        (ptr_long_double_type_node): New macro.
        (ptr_dfloat64_type_node): New macro.
        (ptr_dfloat128_type_node): New macro.
        (ptr_ieee128_type_node): New macro.
        (ptr_ibm128_type_node): New macro.
        (ptr_vector_pair_type_node): New macro.
        (ptr_vector_quad_type_node): New macro.
        (ptr_long_long_integer_type_node): New macro.
        (ptr_long_long_unsigned_type_node): New macro.

2021-08-24  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000-builtin-new.def: Add power9-vector, power9,
        and power9-64 stanzas.

2021-08-24  Roger Sayle  <roger@nextmovesoftware.com>
            Tom de Vries  <tdevries@suse.de>

        * config.gcc (nvptx-*-*): Define {c,c++}_target_objs.
        * config/nvptx/nvptx-protos.h (nvptx_cpu_cpp_builtins): Prototype.
        * config/nvptx/nvptx.h (TARGET_CPU_CPP_BUILTINS): Implement with
        a call to the new nvptx_cpu_cpp_builtins function in nvptx-c.c.
        * config/nvptx/t-nvptx (nvptx-c.o): New rule.
        * config/nvptx/nvptx-c.c: New source file.
        (nvptx_cpu_cpp_builtins): Move implementation here.

2021-08-24  Martin Sebor  <msebor@redhat.com>

        PR middle-end/101600
        PR middle-end/101977
        * gimple-ssa-warn-access.cc (maybe_warn_for_bound): Tighten up
        the phrasing of a warning.
        (check_access): Use the remaining size after subtracting any offset
        rather than the whole object size.
        * pointer-query.cc (access_ref::get_ref): Clear BASE0 flag if it's
        clear for any nonnull PHI argument.
        (compute_objsize): Clear argument.

2021-08-24  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000-builtin-new.def: Add power8-vector stanza.

2021-08-24  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000-builtin-new.def: Add power7 and power7-64
        stanzas.

2021-08-24  Andrew MacLeod  <amacleod@redhat.com>

        * value-relation.cc (rr_transitive_table): New.
        (relation_transitive): New.
        (value_relation::swap): Remove.
        (value_relation::apply_transitive): New.
        (relation_oracle::relation_oracle): Allocate a new tmp bitmap.
        (relation_oracle::register_relation): Call register_transitives.
        (relation_oracle::register_transitives): New.
        * value-relation.h (relation_oracle): Add new temporary bitmap and
        methods.

2021-08-24  H.J. Lu  <hjl.tools@gmail.com>

        PR target/102021
        * config/i386/i386-expand.c (ix86_expand_vector_move): Broadcast
        from integer to a pseudo vector register.

2021-08-24  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/100089
        * tree-vectorizer.h (vect_slp_bb): Rename to ...
        (vect_slp_if_converted_bb): ... this and get the original
        loop as new argument.
        * tree-vectorizer.c (try_vectorize_loop_1): Revert previous fix,
        pass original loop to vect_slp_if_converted_bb.
        * tree-vect-slp.c (vect_bb_vectorization_profitable_p):
        If orig_loop was passed scan the not vectorized stmts
        for COND_EXPRs and force not profitable if found.
        (vect_slp_region): Pass down all SLP instances to costing
        if orig_loop was specified.
        (vect_slp_bbs): Pass through orig_loop.
        (vect_slp_bb): Rename to ...
        (vect_slp_if_converted_bb): ... this and get the original
        loop as new argument.
        (vect_slp_function): Adjust.

2021-08-24  Richard Earnshaw  <rearnsha@arm.com>

        PR target/102035
        * config/arm/arm.md (attribute arch): Add fix_vlldm.
        (arch_enabled): Use it.
        * config/arm/vfp.md (lazy_store_multiple_insn): Add alternative to
        use when erratum mitigation is needed.

2021-08-24  Richard Earnshaw  <rearnsha@arm.com>

        PR target/102035
        * config/arm/arm.opt (mfix-cmse-cve-2021-35465): New option.
        * doc/invoke.texi (Arm Options): Document it.
        * config/arm/arm-cpus.in (quirk_vlldm): New feature bit.
        (ALL_QUIRKS): Add quirk_vlldm.
        (cortex-m33): Add quirk_vlldm.
        (cortex-m35p, cortex-m55): Likewise.
        * config/arm/arm.c (arm_option_override): Enable fix_vlldm if
        targetting an affected CPU and not explicitly controlled on
        the command line.

2021-08-24  Richard Earnshaw  <rearnsha@arm.com>

        * config/arm/vfp.md (lazy_store_multiple_insn): Rewrite as valid RTL.
        (lazy_load_multiple_insn): Likewise.

2021-08-24  liuhongt  <hongtao.liu@intel.com>

        PR target/101989
        * config/i386/sse.md (<avx512>_vternlog<mode><sd_maskz_name>):
        Enable avx512 embedded broadcast.
        (*<avx512>_vternlog<mode>_all): Ditto.
        (<avx512>_vternlog<mode>_mask): Ditto.

2021-08-24  liuhongt  <hongtao.liu@intel.com>

        PR target/101989
        * config/i386/i386.c (ix86_rtx_costs): Define cost for
        UNSPEC_VTERNLOG.
        * config/i386/i386.h (STRIP_UNARY): New macro.
        * config/i386/predicates.md (reg_or_notreg_operand): New
        predicate.
        * config/i386/sse.md (*<avx512>_vternlog<mode>_all): New define_insn.
        (*<avx512>_vternlog<mode>_1): New pre_reload
        define_insn_and_split.
        (*<avx512>_vternlog<mode>_2): Ditto.
        (*<avx512>_vternlog<mode>_3): Ditto.
        (any_logic1,any_logic2): New code iterator.
        (logic_op): New code attribute.
        (ternlogsuffix): Extend to VNxDF and VNxSF.

2021-08-24  Richard Biener  <rguenther@suse.de>

        * doc/invoke.texi (vect-inner-loop-cost-factor): Adjust.
        * params.opt (--param vect-inner-loop-cost-factor): Adjust
        maximum value.
        * tree-vect-loop.c (vect_analyze_loop_form): Initialize
        inner_loop_cost_factor to the minimum of the estimated number
        of iterations of the inner loop and vect-inner-loop-cost-factor.

2021-08-24  Roger Sayle  <roger@nextmovesoftware.com>
            Richard Biener  <rguenther@suse.de>

        * config/i386/i386-features.c (compute_convert_gain): Provide
        more accurate values for CONST_INT, when optimizing for size.
        * config/i386/i386.c (COSTS_N_BYTES): Move definition from here...
        * config/i386/i386.h (COSTS_N_BYTES): to here.

2021-08-24  Roger Sayle  <roger@nextmovesoftware.com>
            Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/102029
        * match.pd (shift transformations): Add an additional check for
        !POINTER_TYPE_P in the recently added left shift transformation.

2021-08-24  liuhongt  <hongtao.liu@intel.com>

        PR tree-optimization/100089
        * tree-vectorizer.c (try_vectorize_loop_1): Disable slp in
        loop vectorizer when cost model is very-cheap.

2021-08-23  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000-gen-builtins.c (parse_bif_entry): Don't call
        asprintf, which is not available on AIX.

2021-08-23  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config.gcc (target_gtfiles): Add ./rs6000-builtins.h.
        * config/rs6000/t-rs6000 (EXTRA_GTYPE_DEPS): Set.

2021-08-23  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config.gcc (powerpc*-*-*): Add rs6000-builtins.o to extra_objs.
        * config/rs6000/rs6000-gen-builtins.c (main): Close init_file
        last.
        * config/rs6000/t-rs6000 (rs6000-gen-builtins.o): New target.
        (rbtree.o): Likewise.
        (rs6000-gen-builtins): Likewise.
        (rs6000-builtins.c): Likewise.
        (rs6000-builtins.h): Likewise.
        (rs6000.o): Add dependency.
        (EXTRA_HEADERS): Add rs6000-vecdefines.h.
        (rs6000-vecdefines.h): New target.
        (rs6000-builtins.o): Likewise.
        (rs6000-call.o): Add rs6000-builtins.h as a dependency.
        (rs6000-c.o): Likewise.

2021-08-23  Bill Schmidt  <wschmidt@linux.ibm.com>

        PR target/101830
        * config/rs6000/rs6000-gen-builtins.c (consume_whitespace):
        Diagnose buffer overrun.
        (safe_inc_pos): Fix overrun detection.
        (match_identifier): Diagnose buffer overrun.
        (match_integer): Likewise.
        (match_to_right_bracket): Likewise.

2021-08-23  Jan Hubicka  <hubicka@ucw.cz>

        * ipa-modref-tree.h (modref_access_node::range_info_useful_p):
        Improve range compare.
        (modref_access_node::contains): New member function.
        (modref_access_node::search): Remove.
        (modref_access_node::insert): Be smarter about subaccesses.

2021-08-23  Thomas Schwinge  <thomas@codesourcery.com>

        * config/i386/i386-options.c (ix86_omp_device_kind_arch_isa)
        <omp_device_arch> [ACCEL_COMPILER]: Match "intel_mic".
        * config/i386/t-omp-device (omp-device-properties-i386) <arch>:
        Add "intel_mic".

2021-08-23  Jeff Law  <jlaw@localhost.localdomain>

        * config/h8300/h8300-protos.h (h8300_expand_epilogue): Add new
        argument.
        * config/h8300/jumpcall.md (call, call_value): Restrict to
        !SIBLING_CALL_P cases.
        (subcall, sibcall_value): New patterns & expanders.
        * config/h8300/proepi.md (epilogue): Pass new argument to
        h8300_expand_epilogue.
        (sibcall_epilogue): New expander.
        * config/h8300/h8300.c (h8300_expand_epilogue): Handle sibcall
        epilogues too.
        (h8300_ok_for_sibcall_p): New function.
        (TARGET_FUNCTION_OK_FOR_SIBCALL): define.

2021-08-23  Roger Sayle  <roger@nextmovesoftware.com>

        * simplify-rtx.c (simplify_unary_operation_1): [TRUNCATE]:
        Handle case where the operand is already the desired mode.

2021-08-23  Richard Biener  <rguenther@suse.de>

        PR ipa/97565
        * tree-ssa-structalias.c (ipa_pta_execute): Check in_other_partition
        in addition to has_gimple_body.

2021-08-23  Jan Hubicka  <hubicka@ucw.cz>

        PR middle-end/101949
        * ipa-modref.c (analyze_ssa_name_flags): Fix merging of
        EAF_NOCLOBBER

2021-08-23  Martin Liska  <mliska@suse.cz>

        * doc/invoke.texi: Put the option out of -mxl-mode-app-model
        table.

2021-08-23  Richard Biener  <rguenther@suse.de>

        * tree-vect-loop.c (vect_compute_single_scalar_iteration_cost):
        Properly scale the inner loop cost only once.

2021-08-23  Roger Sayle  <roger@nextmovesoftware.com>

        * tree-ssa-ccp.c (bit_value_binop) [TRUNC_MOD_EXPR, TRUNC_DIV_EXPR]:
        Provide bounds for unsigned (and signed with non-negative operands)
        division and modulus.

2021-08-23  Roger Sayle  <roger@nextmovesoftware.com>

        * simplify-rtx.c (simplify_truncation): Generalize simplification
        of (truncate:A (subreg:B X)).
        (simplify_unary_operation_1) [FLOAT_TRUNCATE, FLOAT_EXTEND,
        SIGN_EXTEND, ZERO_EXTEND]: Handle cases where the operand
        already has the desired machine mode.
        (test_scalar_int_ops): Add tests that useless extensions and
        truncations are optimized away.
        (test_scalar_int_ext_ops): New self-test function to confirm
        that truncations of extensions are correctly simplified.
        (test_scalar_int_ext_ops2): New self-test function to check
        truncations of truncations, extensions of extensions, and
        truncations of extensions.
        (test_scalar_ops): Call the above two functions with a
        representative sampling of integer machine modes.

2021-08-23  Roger Sayle  <roger@nextmovesoftware.com>

        * match.pd (shift transformations): Change the sign of an
        LSHIFT_EXPR if it reduces the number of explicit conversions.

2021-08-23  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/86723
        * gimple-ssa-store-merging.c (find_bswap_or_nop_finalize): Add
        cast64_to_32 argument, set *cast64_to_32 to false, unless n is
        non-memory permutation of 64-bit src which only has bytes of
        0 or [5..8] and n->range is 4.
        (find_bswap_or_nop): Add cast64_to_32 and mask arguments, adjust
        find_bswap_or_nop_finalize caller, support bswap with some bytes
        zeroed, as long as at least two bytes are not zeroed.
        (bswap_replace): Add mask argument and handle masking of bswap
        result.
        (maybe_optimize_vector_constructor): Adjust find_bswap_or_nop
        caller, punt if cast64_to_32 or mask is not all ones.
        (pass_optimize_bswap::execute): Adjust find_bswap_or_nop_finalize
        caller, for now punt if cast64_to_32.

2021-08-23  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/79334
        * tree-ssa-sccvn.c (copy_reference_ops_from_ref): Record
        a type also for COMPONENT_REFs.
        (vn_reference_may_trap): Check ARRAY_REF with constant index
        against the array domain.

2021-08-23  liuhongt  <hongtao.liu@intel.com>

        PR target/102016
        * config/i386/sse.md (*avx512f_pshufb_truncv8hiv8qi_1): Add
        TARGET_AVX512BW to condition.

2021-08-23  Jakub Jelinek  <jakub@redhat.com>

        PR debug/101905
        * dwarf2out.c (gen_variable_die): Add DW_AT_location for global
        register variables already during early_dwarf if possible.

2021-08-23  Christophe Lyon  <christophe.lyon@foss.st.com>

        * config/arm/arm_mve.h: Fix __arm_vctp16q return type.

2021-08-23  Christophe Lyon  <christophe.lyon@foss.st.com>

        PR target/100856
        * config/arm/arm.opt: Fix typo.
        * config/arm/t-rmprofile: Fix typo.

2021-08-23  Jakub Jelinek  <jakub@redhat.com>

        * tree.h (OMP_CLAUSE_GRAINSIZE_STRICT): Define.
        (OMP_CLAUSE_NUM_TASKS_STRICT): Define.
        * tree-pretty-print.c (dump_omp_clause) <case OMP_CLAUSE_GRAINSIZE,
        case OMP_CLAUSE_NUM_TASKS>: Print strict: modifier.
        * omp-expand.c (expand_task_call): Use GOMP_TASK_FLAG_STRICT in iflags
        if either grainsize or num_tasks clause has the strict modifier.

2021-08-23  Martin Liska  <mliska@suse.cz>

        * dbgcnt.def (DEBUG_COUNTER): New counter.
        * gimple.c (gimple_call_arg_flags): Use it in IPA PTA.

2021-08-23  Jan Hubicka  <hubicka@ucw.cz>

        * ipa-modref.c (analyze_ssa_name_flags): Improve handling of return slot.

2021-08-23  Xi Ruoyao  <xry111@mengyan1223.wang>

        PR target/101922
        * config/mips/mips-protos.h (mips_msa_output_shift_immediate):
          Declare.
        * config/mips/mips.c (mips_msa_output_shift_immediate): New
          function.
        * config/mips/mips-msa.md (vashl<mode>3, vashr<mode>3,
          vlshr<mode>3): Call it.

2021-08-22  Jan Hubicka  <hubicka@ucw.cz>
            Martin Liska  <mliska@suse.cz>

        PR middle-end/101949
        * ipa-modref.c (analyze_ssa_name_flags): Indirect call implies
        ~EAF_NOCLOBBER.

2021-08-21  Dragan Mladjenovic  <OT_Dragan.Mladjenovic@mediatek.com>

        * config/mips/mips.c (mips_function_rodata_section,
        TARGET_ASM_FUNCTION_RODATA_SECTION): Removed.

2021-08-21  John David Anglin  <danglin@gcc.gnu.org>

        * config/pa/pa.c (pa_asm_output_aligned_common): Remove warning.

2021-08-20  Serge Belyshev  <belyshev@depni.sinp.msu.ru>

        * configure.ac (thread-local storage support): Remove tls_first_major
        and tls_first_minor.  Use "$conftest_s" to check support.
        * configure: Regenerate.

2021-08-20  Serge Belyshev  <belyshev@depni.sinp.msu.ru>

        * configure.ac: Fixup formatting.

2021-08-20  Serge Belyshev  <belyshev@depni.sinp.msu.ru>

        * acinclude.m4 (gcc_GAS_CHECK_FEATURE): Remove third argument and ...
        * configure.ac: ... update all callers.

2021-08-20  Serge Belyshev  <belyshev@depni.sinp.msu.ru>

        PR target/91602
        * acinclude.m4 (_gcc_COMPUTE_GAS_VERSION, _gcc_GAS_VERSION_GTE_IFELSE)
        (gcc_GAS_VERSION_GTE_IFELSE): Remove.
        (gcc_GAS_CHECK_FEATURE): Do not handle in-tree case specially.
        * configure.ac: Remove gcc_cv_gas_major_version, gcc_cv_gas_minor_version.
        Remove remaining checks for in-tree assembler.
        * configure: Regenerate.

2021-08-20  Jeff Law  <jlaw@localhost.localdomain>

        * config/h8300/h8300.c (shift_alg_hi): Improve arithmetic shift right
        by 15 bits for H8/300H and H8/S.  Improve logical shifts by 12
        bits for H8/S.
        (shift_alg_si): Improve arithmetic right shift by 28-30 bits for
        H8/300H.  Improve arithmetic shift right by 15 bits for H8/S.
        Improve logical shifts by 27 bits for H8/S.
        (get_shift_alg): Corresponding changes.
        (h8300_option_override): Revert to loops for -Os when profitable.

2021-08-20  Richard Biener  <rguenther@suse.de>

        * tree-vect-data-refs.c (dr_group_sort_cmp): Do not compare
        BBs.
        (vect_analyze_data_ref_accesses): Likewise.  Assign the BB
        index as group_id when dataref_groups were not computed.
        * tree-vect-slp.c (vect_slp_bbs): Bump current_group when
        we advace to the next BB.

2021-08-20  Jakub Jelinek  <jakub@redhat.com>

        * omp-builtins.def (BUILT_IN_GOMP_WARNING, BUILT_IN_GOMP_ERROR): New
        builtins.

2021-08-20  Martin Liska  <mliska@suse.cz>

        PR gcov-profile/89961
        * gcov.c (make_gcov_file_name): Rewrite using std::string.
        (mangle_name): Simplify, do not used the second argument.
        (strip_extention): New function.
        (get_md5sum): Likewise.
        (get_gcov_intermediate_filename): Handle properly -p and -x
        options.
        (output_gcov_file): Use string type.
        (generate_results): Likewise.
        (md5sum_to_hex): Remove.

2021-08-20  Michael Meissner  <meissner@linux.ibm.com>

        * config/rs6000/altivec.md (UNSPEC_XXEVAL): Move to vsx.md.
        (UNSPEC_XXSPLTIW): Move to vsx.md.
        (UNSPEC_XXSPLTID): Move to vsx.md.
        (UNSPEC_XXSPLTI32DX): Move to vsx.md.
        (UNSPEC_XXBLEND): Move to vsx.md.
        (UNSPEC_XXPERMX): Move to vsx.md.
        (VM3): Move to vsx.md.
        (VM3_char): Move to vsx.md.
        (xxspltiw_v4si): Move to vsx.md.
        (xxspltiw_v4sf): Move to vsx.md.
        (xxspltiw_v4sf_inst): Move to vsx.md.
        (xxspltidp_v2df): Move to vsx.md.
        (xxspltidp_v2df_inst): Move to vsx.md.
        (xxsplti32dx_v4si_inst): Move to vsx.md.
        (xxsplti32dx_v4sf): Move to vsx.md.
        (xxsplti32dx_v4sf_inst): Move to vsx.md.
        (xxblend_<mode>): Move to vsx.md.
        (xxpermx): Move to vsx.md.
        (xxpermx_inst): Move to vsx.md.
        * config/rs6000/vsx.md (UNSPEC_XXEVAL): Move from altivec.md.
        (UNSPEC_XXSPLTIW): Move from altivec.md.
        (UNSPEC_XXSPLTID): Move from altivec.md.
        (UNSPEC_XXSPLTI32DX): Move from altivec.md.
        (UNSPEC_XXBLEND): Move from altivec.md.
        (UNSPEC_XXPERMX): Move from altivec.md.
        (VM3): Move from altivec.md.
        (VM3_char): Move from altivec.md.
        (xxspltiw_v4si): Move from altivec.md.
        (xxspltiw_v4sf): Move from altivec.md.
        (xxspltiw_v4sf_inst): Move from altivec.md.
        (xxspltidp_v2df): Move from altivec.md.
        (xxspltidp_v2df_inst): Move from altivec.md.
        (xxsplti32dx_v4si_inst): Move from altivec.md.
        (xxsplti32dx_v4sf): Move from altivec.md.
        (xxsplti32dx_v4sf_inst): Move from altivec.md.
        (xxblend_<mode>): Move from altivec.md.
        (xxpermx): Move from altivec.md.
        (xxpermx_inst): Move from altivec.md.

2021-08-19  Roger Sayle  <roger@nextmovesoftware.com>

        * tree-vect-generic.c (expand_vector_operations_1): Use either
        gimplify_build1 or gimplify_build2 instead of gimple_build_assign
        when constructing scalar splat expressions.

2021-08-19  Peter Bergner  <bergner@linux.ibm.com>

        PR target/101849
        * config/rs6000/rs6000-call.c (rs6000_gimple_fold_mma_builtin): Cast
        pointer to __vector_pair *.

2021-08-19  Martin Sebor  <msebor@redhat.com>

        * gimple-range.cc: Add comments.
        * gimple-range.h: Same.

2021-08-19  Martin Sebor  <msebor@redhat.com>

        PR middle-end/101984
        * gimple-ssa-warn-access.cc (pass_waccess::execute): Also call
        disable_ranger.

2021-08-19  Jeff Law  <jlaw@localhost.localdomain>

        * config.gcc (h8300-*-elf*): Do not include dbxelf.h.
        (h8300-*-linux*, v850-*-rtems*, v850*-elf*): Likewise.
        * config/v850/v850.h (DEFAULT_GDB_EXTENSIONS): Remove.

2021-08-19  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/101950
        * optabs.c (expand_clrsb_using_clz): New function.
        (expand_unop): Use it as another clrsb expansion fallback.

2021-08-19  liuhongt  <hongtao.liu@intel.com>

        Revert:
        2021-07-28  liuhongt  <hongtao.liu@intel.com>

        PR target/99881
        * config/i386/i386.h (processor_costs): Add new member
        integer_to_sse.
        * config/i386/x86-tune-costs.h (ix86_size_cost, i386_cost,
        i486_cost, pentium_cost, lakemont_cost, pentiumpro_cost,
        geode_cost, k6_cost, athlon_cost, k8_cost, amdfam10_cost,
        bdver_cost, znver1_cost, znver2_cost, znver3_cost,
        btver1_cost, btver2_cost, btver3_cost, pentium4_cost,
        nocona_cost, atom_cost, atom_cost, slm_cost, intel_cost,
        generic_cost, core_cost): Initialize integer_to_sse same value
        as sse_op.
        (skylake_cost): Initialize integer_to_sse twice as much as sse_op.
        * config/i386/i386.c (ix86_builtin_vectorization_cost):
        Use integer_to_sse instead of sse_op to calculate the cost of
        vec_construct.

2021-08-18  Iain Sandoe  <iain@sandoe.co.uk>

        * config.gcc: Include rpath.opt for Darwin.
        * config/darwin.h (DRIVER_SELF_SPECS): Handle -rpath.

2021-08-18  Thomas Schwinge  <thomas@codesourcery.com>

        PR bootstrap/101959
        * hash-map-tests.c (test_map_of_type_with_ctor_and_dtor_expand):
        Use an 'int_hash'.

2021-08-18  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/arm_neon.h (vld3_lane_f64): Use float RTL
        pattern and type cast.
        (vld4_lane_f32): Use float RTL pattern.
        (vld4q_lane_f64): Use float type cast.

2021-08-18  Jan Hubicka  <hubicka@ucw.cz>

        * tree-ssa-uninit.c (maybe_warn_pass_by_reference): Check also
        EAF_NOREAD.

2021-08-18  Thomas Schwinge  <thomas@codesourcery.com>

        * hash-map-tests.c (test_map_of_type_with_ctor_and_dtor): Extend.
        (test_map_of_type_with_ctor_and_dtor_expand): Add function.
        (hash_map_tests_c_tests): Call it.

2021-08-18  Thomas Schwinge  <thomas@codesourcery.com>

        * ggc.h (enum ggc_collect): New.
        (ggc_collect): Use it.
        * ggc-page.c: Adjust.
        * ggc-common.c: Likewise.
        * ggc-tests.c: Likewise.
        * read-rtl-function.c: Likewise.
        * selftest-run-tests.c: Likewise.
        * doc/gty.texi (Invoking the garbage collector): Likewise.

2021-08-18  liuhongt  <hongtao.liu@intel.com>

        PR target/97147
        * config/i386/i386.h (TARGET_V2DF_REDUCTION_PREFER_HADDPD):
        New macro.
        * config/i386/sse.md (*sse3_haddv2df3_low): Add
        TARGET_V2DF_REDUCTION_PREFER_HADDPD.
        (*sse3_hsubv2df3_low): Ditto.
        * config/i386/x86-tune.def
        (X86_TUNE_V2DF_REDUCTION_PREFER_HADDPD): New tune.

2021-08-17  Andrew MacLeod  <amacleod@redhat.com>

        * gimple-range-gori.cc (gori_compute::gori_compute): Enable tracing.
        (gori_compute::compute_operand_range): Add tracing.
        (gori_compute::logical_combine): Ditto.
        (gori_compute::compute_logical_operands): Ditto.
        (gori_compute::compute_operand1_range): Ditto.
        (gori_compute::compute_operand2_range): Ditto.
        (gori_compute::outgoing_edge_range_p): Ditto.
        * gimple-range-gori.h (class gori_compute): Add range_tracer.

2021-08-17  Andrew MacLeod  <amacleod@redhat.com>

        * flag-types.h (enum evrp_mode): Adjust evrp-mode values.
        * gimple-range-cache.cc (DEBUG_RANGE_CACHE): Relocate from.
        * gimple-range-trace.h (DEBUG_RANGE_CACHE): Here.
        * params.opt (--param=evrp-mode): Adjust options.

2021-08-17  Andrew MacLeod  <amacleod@redhat.com>

        * Makefile.in (OBJS): Add gimple-range-trace.o.
        * gimple-range-cache.h (enable_new_values): Remove unused prototype.
        * gimple-range-fold.cc: Adjust headers.
        * gimple-range-trace.cc: New.
        * gimple-range-trace.h: New.
        * gimple-range.cc (gimple_ranger::gimple_ranger): Enable tracer.
        (gimple_ranger::range_of_expr): Add tracing.
        (gimple_ranger::range_on_entry): Ditto.
        (gimple_ranger::range_on_exit): Ditto.
        (gimple_ranger::range_on_edge): Ditto.
        (gimple_ranger::fold_range_internal): Ditto.
        (gimple_ranger::dump_bb): Do not calculate edge range twice.
        (trace_ranger::*): Remove.
        (enable_ranger): Never create a trace_ranger.
        (debug_seed_ranger): Move to gimple-range-trace.cc.
        (dump_ranger): Ditto.
        (debug_ranger): Ditto.
        * gimple-range.h: Include gimple-range-trace.h.
        (range_on_entry, range_on_exit): No longer virtual.
        (class trace_ranger): Remove.
        (DEBUG_RANGE_CACHE): Move to gimple-range-trace.h.

2021-08-17  Martin Sebor  <msebor@redhat.com>

        PR middle-end/101854
        * builtins.c (expand_builtin_alloca): Move warning code to check_alloca
        in gimple-ssa-warn-access.cc.
        * calls.c (alloc_max_size): Move code to check_alloca.
        (get_size_range): Move to pointer-query.cc.
        (maybe_warn_alloc_args_overflow): Move to gimple-ssa-warn-access.cc.
        (get_attr_nonstring_decl): Move to tree.c.
        (fntype_argno_type): Move to gimple-ssa-warn-access.cc.
        (append_attrname): Same.
        (maybe_warn_rdwr_sizes): Same.
        (initialize_argument_information): Move code to
        gimple-ssa-warn-access.cc.
        * calls.h (maybe_warn_alloc_args_overflow): Move to
        gimple-ssa-warn-access.h.
        (get_attr_nonstring_decl): Move to tree.h.
        (maybe_warn_nonstring_arg):  Move to gimple-ssa-warn-access.h.
        (enum size_range_flags): Move to pointer-query.h.
        (get_size_range): Same.
        * gimple-ssa-warn-access.cc (has_location): Remove unused overload
        to avoid Clang -Wunused-function.
        (get_size_range): Declare static.
        (maybe_emit_free_warning): Rename...
        (maybe_check_dealloc_call): ...to this for consistency.
        (class pass_waccess): Add members.
        (pass_waccess::~pass_waccess): Defined.
        (alloc_max_size): Move here from calls.c.
        (maybe_warn_alloc_args_overflow): Same.
        (check_alloca): New function.
        (check_alloc_size_call): New function.
        (check_strncat): Handle another warning flag.
        (pass_waccess::check_builtin): Handle alloca.
        (fntype_argno_type): Move here from calls.c.
        (append_attrname): Same.
        (maybe_warn_rdwr_sizes): Same.
        (pass_waccess::check_call): Define.
        (check_nonstring_args): New function.
        (pass_waccess::check): Call new member functions.
        (pass_waccess::execute): Enable ranger.
        * gimple-ssa-warn-access.h (get_size_range): Move here from calls.h.
        (maybe_warn_nonstring_arg): Same.
        * gimple-ssa-warn-restrict.c: Remove #include.
        * pointer-query.cc (get_size_range): Move here from calls.c.
        * pointer-query.h (enum size_range_flags): Same.
        (get_size_range): Same.
        * tree.c (get_attr_nonstring_decl): Move here from calls.c.
        * tree.h (get_attr_nonstring_decl): Move here from calls.h.

2021-08-17  Thomas Schwinge  <thomas@codesourcery.com>

        * ggc.h (ggc_collect): Add 'force_collect' parameter.
        * ggc-page.c (ggc_collect): Use that one instead of global
        'ggc_force_collect'.  Adjust all users.
        * doc/gty.texi (Invoking the garbage collector): Update.
        * ggc-internal.h (ggc_force_collect): Remove.
        * ggc-common.c (ggc_force_collect): Likewise.
        * selftest.h (forcibly_ggc_collect): Remove.
        * ggc-tests.c (selftest::forcibly_ggc_collect): Likewise.
        * read-rtl-function.c (test_loading_labels): Adjust.
        * selftest-run-tests.c (run_tests): Likewise.

2021-08-17  Iain Sandoe  <iain@sandoe.co.uk>

        * config/darwin.c (darwin_file_end): Reset and reclaim the
        section names table at the end of compile.

2021-08-17  Iain Sandoe  <iain@sandoe.co.uk>

        PR target/100340
        * config.in: Regenerate.
        * config/i386/darwin.h (EXTRA_ASM_OPTS): New
        (ASM_SPEC): Pass options to disable branch shortening where
        needed.
        * configure: Regenerate.
        * configure.ac: Detect versions of 'as' that support the
        optimisation which has the bug.

2021-08-17  Richard Biener  <rguenther@suse.de>

        * optabs-query.c (supports_vec_gather_load_p): Also check
        for masked optabs.
        (supports_vec_scatter_store_p): Likewise.
        * tree-vect-data-refs.c (vect_gather_scatter_fn_p): Fall
        back to masked variants if non-masked are not supported.
        * tree-vect-patterns.c (vect_recog_gather_scatter_pattern):
        When we need to use masked gather/scatter but do not have
        a mask set up a constant true one.
        * tree-vect-stmts.c (vect_check_scalar_mask): Also allow
        non-SSA_NAME masks.

2021-08-17  Roger Sayle  <roger@nextmovesoftware.com>

        * tree-ssa-ccp.c (bit_value_binop) [MINUS_EXPR]: Use same
        algorithm as PLUS_EXPR to improve subtraction bit bounds.
        [POINTER_DIFF_EXPR]: Treat as synonymous with MINUS_EXPR.

2021-08-17  Roger Sayle  <roger@nextmovesoftware.com>

        * tree-ssa-ccp.c (bit_value_mult_const): New helper function to
        calculate the mask-value pair result of a multiplication by an
        unsigned constant.
        (bit_value_binop) [MULT_EXPR]:  Call it from here for
        multiplications by (sparse) non-negative constants.

2021-08-17  Christophe Lyon  <christophe.lyon@foss.st.com>

        PR target/100896
        * config.gcc (gcc_cv_initfini_array): Leave undefined for
        uclinuxfdpiceabi targets.

2021-08-17  Alexandre Oliva  <oliva@adacore.com>

        * tree-inline.c (maybe_move_debug_stmts_to_successors): Don't
        reverse debug stmts.

2021-08-17  Alexandre Oliva  <oliva@adacore.com>

        * tree-cfg.c (dump_function_to_file): Use fun, not cfun.

2021-08-17  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/arm_neon.h (__LD4_LANE_FUNC): Delete.
        (__LD4Q_LANE_FUNC): Likewise.
        (vld4_lane_u8): Define without macro.
        (vld4_lane_u16): Likewise.
        (vld4_lane_u32): Likewise.
        (vld4_lane_u64): Likewise.
        (vld4_lane_s8): Likewise.
        (vld4_lane_s16): Likewise.
        (vld4_lane_s32): Likewise.
        (vld4_lane_s64): Likewise.
        (vld4_lane_f16): Likewise.
        (vld4_lane_f32): Likewise.
        (vld4_lane_f64): Likewise.
        (vld4_lane_p8): Likewise.
        (vld4_lane_p16): Likewise.
        (vld4_lane_p64): Likewise.
        (vld4q_lane_u8): Likewise.
        (vld4q_lane_u16): Likewise.
        (vld4q_lane_u32): Likewise.
        (vld4q_lane_u64): Likewise.
        (vld4q_lane_s8): Likewise.
        (vld4q_lane_s16): Likewise.
        (vld4q_lane_s32): Likewise.
        (vld4q_lane_s64): Likewise.
        (vld4q_lane_f16): Likewise.
        (vld4q_lane_f32): Likewise.
        (vld4q_lane_f64): Likewise.
        (vld4q_lane_p8): Likewise.
        (vld4q_lane_p16): Likewise.
        (vld4q_lane_p64): Likewise.
        (vld4_lane_bf16): Likewise.
        (vld4q_lane_bf16): Likewise.

2021-08-17  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/arm_neon.h (__LD3_LANE_FUNC): Delete.
        (__LD3Q_LANE_FUNC): Delete.
        (vld3_lane_u8): Define without macro.
        (vld3_lane_u16): Likewise.
        (vld3_lane_u32): Likewise.
        (vld3_lane_u64): Likewise.
        (vld3_lane_s8): Likewise.
        (vld3_lane_s16): Likewise.
        (vld3_lane_s32): Likewise.
        (vld3_lane_s64): Likewise.
        (vld3_lane_f16): Likewise.
        (vld3_lane_f32): Likewise.
        (vld3_lane_f64): Likewise.
        (vld3_lane_p8): Likewise.
        (vld3_lane_p16): Likewise.
        (vld3_lane_p64): Likewise.
        (vld3q_lane_u8): Likewise.
        (vld3q_lane_u16): Likewise.
        (vld3q_lane_u32): Likewise.
        (vld3q_lane_u64): Likewise.
        (vld3q_lane_s8): Likewise.
        (vld3q_lane_s16): Likewise.
        (vld3q_lane_s32): Likewise.
        (vld3q_lane_s64): Likewise.
        (vld3q_lane_f16): Likewise.
        (vld3q_lane_f32): Likewise.
        (vld3q_lane_f64): Likewise.
        (vld3q_lane_p8): Likewise.
        (vld3q_lane_p16): Likewise.
        (vld3q_lane_p64): Likewise.
        (vld3_lane_bf16): Likewise.
        (vld3q_lane_bf16): Likewise.

2021-08-17  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/arm_neon.h (__LD2_LANE_FUNC): Delete.
        (__LD2Q_LANE_FUNC): Likewise.
        (vld2_lane_u8): Define without macro.
        (vld2_lane_u16): Likewise.
        (vld2_lane_u32): Likewise.
        (vld2_lane_u64): Likewise.
        (vld2_lane_s8): Likewise.
        (vld2_lane_s16): Likewise.
        (vld2_lane_s32): Likewise.
        (vld2_lane_s64): Likewise.
        (vld2_lane_f16): Likewise.
        (vld2_lane_f32): Likewise.
        (vld2_lane_f64): Likewise.
        (vld2_lane_p8): Likewise.
        (vld2_lane_p16): Likewise.
        (vld2_lane_p64): Likewise.
        (vld2q_lane_u8): Likewise.
        (vld2q_lane_u16): Likewise.
        (vld2q_lane_u32): Likewise.
        (vld2q_lane_u64): Likewise.
        (vld2q_lane_s8): Likewise.
        (vld2q_lane_s16): Likewise.
        (vld2q_lane_s32): Likewise.
        (vld2q_lane_s64): Likewise.
        (vld2q_lane_f16): Likewise.
        (vld2q_lane_f32): Likewise.
        (vld2q_lane_f64): Likewise.
        (vld2q_lane_p8): Likewise.
        (vld2q_lane_p16): Likewise.
        (vld2q_lane_p64): Likewise.
        (vld2_lane_bf16): Likewise.
        (vld2q_lane_bf16): Likewise.

2021-08-17  Maxim Kuvyrkov  <maxim.kuvyrkov@linaro.org>

        * haifa-sched.c (advance_one_cycle): Output more context-synchronization
        lines for diff.

2021-08-17  Maxim Kuvyrkov  <maxim.kuvyrkov@linaro.org>

        * haifa-sched.c (enum rfs_decision, rfs_str): Add RFS_AUTOPREF.
        (rank_for_schedule): Use it.

2021-08-17  Maxim Kuvyrkov  <maxim.kuvyrkov@linaro.org>

        PR rtl-optimization/91598
        * haifa-sched.c (autopref_rank_for_schedule): Prioritize "irrelevant"
        insns after memory reads and before memory writes.

2021-08-17  Alistair_Lee  <alistair.lee@arm.com>

        * rtl.h (CONST_VECTOR_P): New macro.
        * config/aarch64/aarch64.c (aarch64_get_sve_pred_bits): Use RTL
        code testing macros.
        (aarch64_ptrue_all_mode): Likewise.
        (aarch64_expand_mov_immediate): Likewise.
        (aarch64_const_vec_all_in_range_p): Likewise.
        (aarch64_rtx_costs): Likewise.
        (aarch64_legitimate_constant_p): Likewise.
        (aarch64_simd_valid_immediate): Likewise.
        (aarch64_simd_make_constant): Likewise.
        (aarch64_convert_mult_to_shift): Likewise.
        (aarch64_expand_sve_vec_perm): Likewise.
        (aarch64_vec_fpconst_pow_of_2): Likewise.

2021-08-17  Andrew MacLeod  <amacleod@redhat.com>

        PR tree-optimization/101938
        * range-op.cc (operator_abs::op1_range): Special case
        -TYPE_MIN_VALUE for flag_wrapv.

2021-08-17  Kewen Lin  <linkw@linux.ibm.com>

        * tree-vect-slp.c (vectorizable_bb_reduc_epilogue): Add the cost for
        value extraction.

2021-08-17  Jakub Jelinek  <jakub@redhat.com>

        * tree.def (OMP_SCOPE): New tree code.
        * tree.h (OMP_SCOPE_BODY, OMP_SCOPE_CLAUSES): Define.
        * tree-nested.c (convert_nonlocal_reference_stmt,
        convert_local_reference_stmt, convert_gimple_call): Handle
        GIMPLE_OMP_SCOPE.
        * tree-pretty-print.c (dump_generic_node): Handle OMP_SCOPE.
        * gimple.def (GIMPLE_OMP_SCOPE): New gimple code.
        * gimple.c (gimple_build_omp_scope): New function.
        (gimple_copy): Handle GIMPLE_OMP_SCOPE.
        * gimple.h (gimple_build_omp_scope): Declare.
        (gimple_has_substatements): Handle GIMPLE_OMP_SCOPE.
        (gimple_omp_scope_clauses, gimple_omp_scope_clauses_ptr,
        gimple_omp_scope_set_clauses): New inline functions.
        (CASE_GIMPLE_OMP): Add GIMPLE_OMP_SCOPE.
        * gimple-pretty-print.c (dump_gimple_omp_scope): New function.
        (pp_gimple_stmt_1): Handle GIMPLE_OMP_SCOPE.
        * gimple-walk.c (walk_gimple_stmt): Likewise.
        * gimple-low.c (lower_stmt): Likewise.
        * gimplify.c (is_gimple_stmt): Handle OMP_MASTER.
        (gimplify_scan_omp_clauses): For task reductions, handle OMP_SCOPE
        like ORT_WORKSHARE constructs.  Adjust diagnostics for %<scope%>
        allowing task reductions.  Reject inscan reductions on scope.
        (omp_find_stores_stmt): Handle GIMPLE_OMP_SCOPE.
        (gimplify_omp_workshare, gimplify_expr): Handle OMP_SCOPE.
        * tree-inline.c (remap_gimple_stmt): Handle GIMPLE_OMP_SCOPE.
        (estimate_num_insns): Likewise.
        * omp-low.c (build_outer_var_ref): Look through GIMPLE_OMP_SCOPE
        contexts if var isn't privatized there.
        (check_omp_nesting_restrictions): Handle GIMPLE_OMP_SCOPE.
        (scan_omp_1_stmt): Likewise.
        (maybe_add_implicit_barrier_cancel): Look through outer
        scope constructs.
        (lower_omp_scope): New function.
        (lower_omp_task_reductions): Handle OMP_SCOPE.
        (lower_omp_1): Handle GIMPLE_OMP_SCOPE.
        (diagnose_sb_1, diagnose_sb_2): Likewise.
        * omp-expand.c (expand_omp_single): Support also GIMPLE_OMP_SCOPE.
        (expand_omp): Handle GIMPLE_OMP_SCOPE.
        (omp_make_gimple_edges): Likewise.
        * omp-builtins.def (BUILT_IN_GOMP_SCOPE_START): New built-in.

2021-08-17  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101925
        * tree-ssa-sccvn.c (copy_reference_ops_from_ref): Set
        reverse on COMPONENT_REF and ARRAY_REF according to
        what reverse_storage_order_for_component_p does.
        (vn_reference_eq): Compare reversed on reference ops.
        (reverse_storage_order_for_component_p): New overload.
        (vn_reference_lookup_3): Check reverse_storage_order_for_component_p
        on the reference looked up.

2021-08-17  Jeff Law  <jlaw@localhost.localdomain>

        * config/h8300/h8300.c (shift_alg_si): Avoid loops for most SImode
        shifts on the H8/S.
        (h8300_option_override): Use loops on H8/S more often when optimizing
        for size.
        (get_shift_alg): Handle new "special" cases on H8/S.  Simplify
        accordingly.  Handle various arithmetic right shifts with special
        sequences that we couldn't handle before.

2021-08-16  Jeff Law  <jlaw@localhost.localdomain>

        * config.gcc (rl78-*-elf*): Do not include dbxelf.h.

2021-08-16  Sebastian Huber  <sebastian.huber@embedded-brains.de>

        * config/sparc/rtemself.h (SPARC_GCOV_TYPE_SIZE): Define.
        * config/sparc/sparc.c (sparc_gcov_type_size): New.
        (TARGET_GCOV_TYPE_SIZE): Redefine if SPARC_GCOV_TYPE_SIZE is defined.
        * coverage.c (get_gcov_type): Use targetm.gcov_type_size().
        * doc/tm.texi (TARGET_GCOV_TYPE_SIZE): Add hook under "Misc".
        * doc/tm.texi.in: Regenerate.
        * target.def (gcov_type_size): New target hook.
        * targhooks.c (default_gcov_type_size): New.
        * targhooks.h (default_gcov_type_size): Declare.
        * tree-profile.c (gimple_gen_edge_profiler): Use precision of
        gcov_type_node.
        (gimple_gen_time_profiler): Likewise.

2021-08-16  Eric Botcazou  <ebotcazou@gcc.gnu.org>

        * dwarf2out.c (add_scalar_info): Deal with DW_AT_data_bit_offset.

2021-08-16  Tobias Burnus  <tobias@codesourcery.com>

        PR middle-end/101931
        * omp-low.c (omp_runtime_api_call): Update for routines
        added in the meanwhile.

2021-08-16  Martin Liska  <mliska@suse.cz>

        PR tree-optimization/100393
        * tree-switch-conversion.c (group_cluster::dump): Use
          get_comparison_count.
        (jump_table_cluster::find_jump_tables): Pre-compute number of
        comparisons and then decrement it. Cache also max_ratio.
        (jump_table_cluster::can_be_handled): Change signature.
        * tree-switch-conversion.h (get_comparison_count): New.

2021-08-16  Eric Botcazou  <ebotcazou@gcc.gnu.org>

        * dwarf2out.c (add_data_member_location_attribute): Use GNAT
        encodings only when -fgnat-encodings=all is specified.
        (add_bound_info): Likewise.
        (add_byte_size_attribute): Likewise.
        (gen_member_die): Likewise.

2021-08-16  Thomas Schwinge  <thomas@codesourcery.com>

        * omp-oacc-neuter-broadcast.cc
        (execute_omp_oacc_neuter_broadcast): Plug 'par' memory leak.

2021-08-16  Thomas Schwinge  <thomas@codesourcery.com>

        * omp-oacc-neuter-broadcast.cc
        (execute_omp_oacc_neuter_broadcast): Clarify memory management for
        'prop_set'.

2021-08-16  Thomas Schwinge  <thomas@codesourcery.com>

        * omp-oacc-neuter-broadcast.cc (field_map): Move variable into...
        (execute_omp_oacc_neuter_broadcast): ... here.
        (install_var_field, build_receiver_ref, build_sender_ref): Take
        'field_map_t *' parameter.  Adjust all users.
        (worker_single_copy, neuter_worker_single): Take a
        'record_field_map_t *' parameter.  Adjust all users.

2021-08-16  liuhongt  <hongtao.liu@intel.com>

        PR target/101930
        * config/i386/i386.md (ldexp<mode>3): Force operands[1] to
        reg.

2021-08-16  Martin Liska  <mliska@suse.cz>

        PR ipa/101726
        * multiple_target.c (create_dispatcher_calls): Make default
          function local only if it is a definition.

2021-08-16  Martin Liska  <mliska@suse.cz>

        PR ipa/100600
        * ipa-icf-gimple.c (func_checker::compare_ssa_name): Do not
          consider equal SSA_NAMEs when one is a param.

2021-08-16  liuhongt  <hongtao.liu@intel.com>

        PR target/101846
        * config/i386/i386-expand.c (ix86_expand_vec_perm_vpermt2):
        Support vpermi2b for V32QI/V16QImode.
        (ix86_extract_perm_from_pool_constant): New function.
        (ix86_expand_vec_one_operand_perm_avx512): Support
        vpermw/vpermb under TARGET_AVX512BW/TARGET_AVX512VBMI.
        (expand_vec_perm_1): Adjust comments for upper.
        * config/i386/i386-protos.h (ix86_extract_perm_from_pool_constant):
        New declare.
        * config/i386/predicates.md (permvar_truncate_operand): New predicate.
        (pshufb_truncv4siv4hi_operand): Ditto.
        (pshufb_truncv8hiv8qi_operand): Ditto.
        * config/i386/sse.md (*avx512bw_permvar_truncv16siv16hi_1):
        New pre_reload define_insn_and_split.
        (*avx512f_permvar_truncv8siv8hi_1): Ditto.
        (*avx512f_vpermvar_truncv8div8si_1): Ditto.
        (*avx512f_permvar_truncv32hiv32qi_1): Ditto.
        (*avx512f_permvar_truncv16hiv16qi_1): Ditto.
        (*avx512f_permvar_truncv4div4si_1): Ditto.
        (*avx512f_pshufb_truncv8hiv8qi_1): Ditto.
        (*avx512f_pshufb_truncv4siv4hi_1): Ditto.
        (*avx512f_pshufd_truncv2div2si_1): Ditto.

2021-08-16  Kito Cheng  <kito.cheng@sifive.com>

        * config/riscv/multilib-generator: Support code model option for
        multi-lib.
        * doc/install.texi: Add document of new option for
        --with-multilib-generator.

2021-08-15  Clément Chigot  <clement.chigot@atos.net>

        * config/rs6000/rs6000.c (xcoff_tls_exec_model_detected): New.
        (rs6000_legitimize_tls_address_aix): Use it.
        (rs6000_xcoff_file_end): Add ".ref __tls_get_addr" when
        xcoff_tls_exec_model_detected is true.

2021-08-15  Jeff Law  <jlaw@localhost.localdomain>

        * config/h8300/h8300.c (shift_alg_si): Retune H8/300H shifts
        to allow a bit more code growth, saving many dozens of cycles.
        (h8300_option_override): Adjus shift_alg_si if optimizing for
        code size.
        (get_shift_alg): Use special + inline shifts for residuals
        in more cases.

2021-08-14  Stafford Horne  <shorne@gmail.com>

        PR target/99783
        * config/or1k/or1k-opts.h: New file.
        * config/or1k/or1k.c (or1k_legitimize_address_1, print_reloc):
        Support generating gotha relocations if -mcmodel=large is
        specified.
        * config/or1k/or1k.h (TARGET_CMODEL_SMALL, TARGET_CMODEL_LARGE):
        New macros.
        * config/or1k/or1k.opt (mcmodel=): New option.
        * doc/invoke.texi (OpenRISC Options): Document mcmodel.

2021-08-14  Martin Sebor  <msebor@redhat.com>

        PR middle-end/101791
        * gimple-ssa-warn-access.cc (new_delete_mismatch_p): Use new argument
        to valid_new_delete_pair_p.
        * tree.c (valid_new_delete_pair_p): Add argument.
        * tree.h (valid_new_delete_pair_p): Same.

2021-08-14  Jakub Jelinek  <jakub@redhat.com>

        PR target/101896
        * config/i386/i386-expand.c (expand_vec_perm_broadcast_1)
        <case E_V64QImode>: For this mode assert
        !TARGET_AVX512BW || d->perm[0] rather than !TARGET_AVX2 || d->perm[0].

2021-08-13  Michael Meissner  <meissner@linux.ibm.com>

        PR target/99921
        * config/rs6000/altivec.md (xxeval): Use register_predicate
        instead of altivec_register_predicate.

2021-08-13  Martin Sebor  <msebor@redhat.com>

        PR middle-end/101734
        * tree-ssa-uninit.c (maybe_warn_read_write_only): New function.
        (maybe_warn_operand): Call it.

2021-08-13  Martin Liska  <mliska@suse.cz>

        PR ipa/101354
        * attribs.c (decl_attributes): Make naked functions "noipa"
          functions.

2021-08-13  Martin Liska  <mliska@suse.cz>

        PR ipa/101261
        * symtab.c (symtab_node::noninterposable_alias): Do not create
          local aliases for target_clone functions as the clonning pass
          rejects aliases.

2021-08-13  Martin Liska  <mliska@suse.cz>

        * opts.c (LIVE_PATCHING_OPTION): Define.
        (control_options_for_live_patching): Use it in error messages.

2021-08-13  Jan Hubicka  <hubicka@ucw.cz>

        * ipa-modref.c (dump_eaf_flags): Dump EAF_NOREAD.
        (implicit_const_eaf_flags, implicit_pure_eaf_flags,
         ignore_stores_eaf_flags): New constants.
        (remove_useless_eaf_flags): New function.
        (eaf_flags_useful_p): Use it.
        (deref_flags): Add EAF_NOT_RETURNED if flag is unused;
        handle EAF_NOREAD.
        (modref_lattice::init): Add EAF_NOREAD.
        (modref_lattice::add_escape_point): Do not reacord escape point if
        result is unused.
        (modref_lattice::merge): EAF_NOESCAPE implies EAF_NODIRECTESCAPE;
        use remove_useless_eaf_flags.
        (modref_lattice::merge_deref): Use ignore_stores_eaf_flags.
        (modref_lattice::merge_direct_load): Add EAF_NOREAD
        (analyze_ssa_name_flags): Fix handling EAF_NOT_RETURNED
        (analyze_parms): Use remove_useless_eaf_flags.
        (ipa_merge_modref_summary_after_inlining): Use ignore_stores_eaf_flags.
        (modref_merge_call_site_flags): Add caller and ecf_flags parameter;
        use remove_useless_eaf_flags.
        (modref_propagate_flags_in_scc): Update.
        * ipa-modref.h: Turn eaf_flags_t back to char.
        * tree-core.h (EAF_NOT_RETURNED): Fix.
        (EAF_NOREAD): New constant
        * tree-ssa-alias.c: (ref_maybe_used_by_call_p_1): Check for
        EAF_NOREAD.
        * tree-ssa-structalias.c (handle_rhs_call): Handle new flags.
        (handle_pure_call): Likewise.

2021-08-12  Jakub Jelinek  <jakub@redhat.com>

        * tree.def (OMP_MASKED): New tree code.
        * tree-core.h (enum omp_clause_code): Add OMP_CLAUSE_FILTER.
        * tree.h (OMP_MASKED_BODY, OMP_MASKED_CLAUSES, OMP_MASKED_COMBINED,
        OMP_CLAUSE_FILTER_EXPR): Define.
        * tree.c (omp_clause_num_ops): Add OMP_CLAUSE_FILTER entry.
        (omp_clause_code_name): Likewise.
        (walk_tree_1): Handle OMP_CLAUSE_FILTER.
        * tree-nested.c (convert_nonlocal_omp_clauses,
        convert_local_omp_clauses): Handle OMP_CLAUSE_FILTER.
        (convert_nonlocal_reference_stmt, convert_local_reference_stmt,
        convert_gimple_call): Handle GIMPLE_OMP_MASTER.
        * tree-pretty-print.c (dump_omp_clause): Handle OMP_CLAUSE_FILTER.
        (dump_generic_node): Handle OMP_MASTER.
        * gimple.def (GIMPLE_OMP_MASKED): New gimple code.
        * gimple.c (gimple_build_omp_masked): New function.
        (gimple_copy): Handle GIMPLE_OMP_MASKED.
        * gimple.h (gimple_build_omp_masked): Declare.
        (gimple_has_substatements): Handle GIMPLE_OMP_MASKED.
        (gimple_omp_masked_clauses, gimple_omp_masked_clauses_ptr,
        gimple_omp_masked_set_clauses): New inline functions.
        (CASE_GIMPLE_OMP): Add GIMPLE_OMP_MASKED.
        * gimple-pretty-print.c (dump_gimple_omp_masked): New function.
        (pp_gimple_stmt_1): Handle GIMPLE_OMP_MASKED.
        * gimple-walk.c (walk_gimple_stmt): Likewise.
        * gimple-low.c (lower_stmt): Likewise.
        * gimplify.c (is_gimple_stmt): Handle OMP_MASTER.
        (gimplify_scan_omp_clauses): Handle OMP_CLAUSE_FILTER.  For clauses
        that take one expression rather than decl or constant, force
        gimplification of that into a SSA_NAME or temporary unless min
        invariant.
        (gimplify_adjust_omp_clauses): Handle OMP_CLAUSE_FILTER.
        (gimplify_expr): Handle OMP_MASKED.
        * tree-inline.c (remap_gimple_stmt): Handle GIMPLE_OMP_MASKED.
        (estimate_num_insns): Likewise.
        * omp-low.c (scan_sharing_clauses): Handle OMP_CLAUSE_FILTER.
        (check_omp_nesting_restrictions): Handle GIMPLE_OMP_MASKED.  Adjust
        diagnostics for existence of masked construct.
        (scan_omp_1_stmt, lower_omp_master, lower_omp_1, diagnose_sb_1,
        diagnose_sb_2): Handle GIMPLE_OMP_MASKED.
        * omp-expand.c (expand_omp_synch, expand_omp, omp_make_gimple_edges):
        Likewise.

2021-08-12  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/98309
        * config/i386/i386.md (avx512f_scalef<mode>2): New insn pattern.
        (ldexp<mode>3): Use avx512f_scalef<mode>2.
        (UNSPEC_SCALEF): Move from ...
        * config/i386/sse.md (UNSPEC_SCALEF): ... here.

2021-08-12  Jan Hubicka  <hubicka@ucw.cz>

        * ipa-split.c (consider_split): Fix condition testing void functions.

2021-08-12  Aldy Hernandez  <aldyh@redhat.com>

        * doc/invoke.texi: Remove docs for threader-mode param.
        * flag-types.h (enum threader_mode): Remove.
        * params.opt: Remove threader-mode param.
        * tree-ssa-threadbackward.c (class back_threader): Remove
        path_is_unreachable_p.
        Make find_paths private.
        Add maybe_thread and thread_through_all_blocks.
        Remove reference marker for m_registry.
        Remove reference marker for m_profit.
        (back_threader::back_threader): Adjust for registry and profit not
        being references.
        (dump_path): Move down.
        (debug): Move down.
        (class thread_jumps): Remove.
        (class back_threader_registry): Remove m_all_paths.
        Remove destructor.
        (thread_jumps::thread_through_all_blocks): Move to back_threader
        class.
        (fsm_find_thread_path): Remove
        (back_threader::maybe_thread): New.
        (back_threader::thread_through_all_blocks): Move from
        thread_jumps.
        (back_threader_registry::back_threader_registry): Remove
        m_all_paths.
        (back_threader_registry::~back_threader_registry): Remove.
        (thread_jumps::find_taken_edge): Remove.
        (thread_jumps::check_subpath_and_update_thread_path): Remove.
        (thread_jumps::maybe_register_path): Remove.
        (thread_jumps::handle_phi): Remove.
        (handle_assignment_p): Remove.
        (thread_jumps::handle_assignment): Remove.
        (thread_jumps::fsm_find_control_statement_thread_paths): Remove.
        (thread_jumps::find_jump_threads_backwards): Remove.
        (thread_jumps::find_jump_threads_backwards_with_ranger): Remove.
        (try_thread_blocks): Rename find_jump_threads_backwards to
        maybe_thread.
        (pass_early_thread_jumps::execute): Same.

2021-08-12  Tobias Burnus  <tobias@codesourcery.com>

        * tree-core.h (omp_clause_proc_bind_kind): Add
        OMP_CLAUSE_PROC_BIND_PRIMARY.
        * tree-pretty-print.c (dump_omp_clause): Add TODO comment to
        change 'master' to 'primary' in proc_bind for OpenMP 5.1.

2021-08-12  Claudiu Zissulescu  <claziss@synopsys.com>

        * common/config/arc/arc-common.c (arc_option_init_struct): Remove
        fno-common reference.
        * config/arc/arc.c (arc_override_options): Remove overriding of
        flag_no_common.

2021-08-12  Jakub Jelinek  <jakub@redhat.com>

        PR target/101860
        * config/i386/i386-expand.c (ix86_expand_vec_one_operand_perm_avx512):
        If d->testing_p, return true after performing checks instead of
        actually expanding the insn.
        (expand_vec_perm_broadcast_1): Handle V32HImode - assert
        !TARGET_AVX512BW and return false.

2021-08-12  Eric Botcazou  <ebotcazou@gcc.gnu.org>

        * configure.ac (PE linker --disable-dynamicbase support): New check.
        * configure: Regenerate.
        * config.in: Likewise.
        * config/i386/mingw32.h (LINK_SPEC_DISABLE_DYNAMICBASE): New define.
        (LINK_SPEC): Use it.
        * config/i386/mingw-w64.h (LINK_SPEC_DISABLE_DYNAMICBASE): Likewise.
        (LINK_SPEC): Likewise.

2021-08-12  liuhongt  <hongtao.liu@intel.com>

        PR target/101846
        * config/i386/sse.md (*avx2_zero_extendv16qiv16hi2_2): New
        post_reload define_insn_and_split.
        (*avx512bw_zero_extendv32qiv32hi2_2): Ditto.
        (*sse4_1_zero_extendv8qiv8hi2_4): Ditto.
        (*avx512f_zero_extendv16hiv16si2_2): Ditto.
        (*avx2_zero_extendv8hiv8si2_2): Ditto.
        (*sse4_1_zero_extendv4hiv4si2_4): Ditto.
        (*avx512f_zero_extendv8siv8di2_2): Ditto.
        (*avx2_zero_extendv4siv4di2_2): Ditto.
        (*sse4_1_zero_extendv2siv2di2_4): Ditto.
        (VI248_256, VI248_512, VI148_512, VI148_256, VI148_128): New
        mode iterator.

2021-08-11  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000-builtin-new.def: Add always, power5, and
        power6 stanzas.

2021-08-11  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000-builtin-new.def: Add vsx stanza.

2021-08-11  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000-builtin-new.def: Finish altivec stanza.
        * config/rs6000/rs6000-call.c (rs6000_init_builtins): Move
        initialization of pcvoid_type_node here...
        (altivec_init_builtins): ...from here.
        * config/rs6000/rs6000.h (rs6000_builtin_type_index): Add
        RS6000_BTI_const_ptr_void.
        (pcvoid_type_node): New macro.

2021-08-11  Richard Biener  <rguenther@suse.de>

        PR target/101877
        * tree-ssa-forwprop.c (pass_forwprop::execute): Do not decompose
        hard-register accesses.

2021-08-11  Richard Biener  <rguenther@suse.de>

        * tree-ssa-operands.c (operands_scanner::get_expr_operands):
        Do not look at COMPONENT_REF FIELD_DECLs TREE_THIS_VOLATILE
        to determine has_volatile_ops.

2021-08-11  Eric Botcazou  <ebotcazou@gcc.gnu.org>

        * cfgexpand.c (expand_used_vars): Reuse attribs local variable.

2021-08-11  Jan Hubicka  <hubicka@ucw.cz>
            Alexandre Oliva  <oliva@adacore.com>

        * ipa-modref.c (modref_lattice::dump): Fix escape_point's min_flags
        dumping.
        (modref_lattice::merge_deref): Fix handling of indirect scape points.
        (update_escape_summary_1): Likewise.
        (update_escape_summary): Likewise.
        (ipa_merge_modref_summary_after_inlining): Likewise.

2021-08-11  Richard Biener  <rguenther@suse.de>

        PR middle-end/101858
        * fold-const.c (fold_binary_loc): Guard simplification
        of  X < (cast) (1 << Y) to integer types.

2021-08-11  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101861
        * tree-vect-stmts.c (vectorizable_load): Fix error in
        previous change with regard to gather vectorization.

2021-08-11  prathamesh.kulkarni  <prathamesh.kulkarni@linaro.org>

        PR target/66791
        * config/arm/arm_neon.h (vdup_n_s8): Replace call to builtin
        with constructor.
        (vdup_n_s16): Likewise.
        (vdup_n_s32): Likewise.
        (vdup_n_s64): Likewise.
        (vdup_n_u8): Likewise.
        (vdup_n_u16): Likewise.
        (vdup_n_u32): Likewise.
        (vdup_n_u64): Likewise.
        (vdup_n_p8): Likewise.
        (vdup_n_p16): Likewise.
        (vdup_n_p64): Likewise.
        (vdup_n_f16): Likewise.
        (vdup_n_f32): Likewise.
        (vdupq_n_s8): Likewise.
        (vdupq_n_s16): Likewise.
        (vdupq_n_s32): Likewise.
        (vdupq_n_s64): Likewise.
        (vdupq_n_u8): Likewise.
        (vdupq_n_u16): Likewise.
        (vdupq_n_u32): Likewise.
        (vdupq_n_u64): Likewise.
        (vdupq_n_p8): Likewise.
        (vdupq_n_p16): Likewise.
        (vdupq_n_p64): Likewise.
        (vdupq_n_f16): Likewise.
        (vdupq_n_f32): Likewise.
        (vmov_n_s8): Replace call to builtin with call to corresponding
        vdup_n intrinsic.
        (vmov_n_s16): Likewise.
        (vmov_n_s32): Likewise.
        (vmov_n_s64): Likewise.
        (vmov_n_u8): Likewise.
        (vmov_n_u16): Likewise.
        (vmov_n_u32): Likewise.
        (vmov_n_u64): Likewise.
        (vmov_n_p8): Likewise.
        (vmov_n_p16): Likewise.
        (vmov_n_f16): Likewise.
        (vmov_n_f32): Likewise.
        (vmovq_n_s8): Likewise.
        (vmovq_n_s16): Likewise.
        (vmovq_n_s32): Likewise.
        (vmovq_n_s64): Likewise.
        (vmovq_n_u8): Likewise.
        (vmovq_n_u16): Likewise.
        (vmovq_n_u32): Likewise.
        (vmovq_n_u64): Likewise.
        (vmovq_n_p8): Likewise.
        (vmovq_n_p16): Likewise.
        (vmovq_n_f16): Likewise.
        (vmovq_n_f32): Likewise.
        * config/arm/arm_neon_builtins.def: Remove entries for vdup_n.

2021-08-11  liuhongt  <hongtao.liu@intel.com>

        PR target/98309
        * config/i386/i386.md (ldexp<mode>3): Extend to vscalefs[sd]
        when TARGET_AVX512F and TARGET_SSE_MATH.

2021-08-10  Jakub Jelinek  <jakub@redhat.com>

        PR target/80355
        * config/i386/i386-expand.c (expand_vec_perm_even_odd): Return false
        for V32HImode if !TARGET_AVX512BW.
        (ix86_vectorize_vec_perm_const) <case E_V32HImode, case E_V64QImode>:
        If !TARGET_AVX512BW and TARGET_AVX512F and d.testing_p, don't fail
        early, but actually check the permutation.

2021-08-10  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101809
        * tree-vect-stmts.c (get_load_store_type): Allow emulated
        gathers with offset vector nunits being a constant multiple
        of the data vector nunits.
        (vect_get_gather_scatter_ops): Use the appropriate nunits
        for the offset vector defs.
        (vectorizable_store): Adjust call to
        vect_get_gather_scatter_ops.
        (vectorizable_load): Likewise.  Handle the case of less
        offset vectors than data vectors.

2021-08-10  Jakub Jelinek  <jakub@redhat.com>

        PR target/80355
        * config/i386/sse.md (*avx512f_shuf_<shuffletype>64x2_1<mask_name>_1,
        *avx512f_shuf_<shuffletype>32x4_1<mask_name>_1): New define_insn
        patterns.

2021-08-10  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101801
        PR tree-optimization/101819
        * tree-vectorizer.h (vect_emulated_vector_p): Declare.
        * tree-vect-loop.c (vect_emulated_vector_p): New function.
        (vectorizable_reduction): Re-instantiate a check for emulated
        operations.
        * tree-vect-stmts.c (vectorizable_shift): Likewise.
        (vectorizable_operation): Likewise.  Cost emulated vector
        operations according to the scalar sequence synthesized by
        vector lowering.

2021-08-10  Richard Biener  <rguenther@suse.de>

        PR middle-end/101824
        * tree-nested.c (get_frame_field): Mark the COMPONENT_REF as
        volatile in case the variable was.

2021-08-10  H.J. Lu  <hjl.tools@gmail.com>

        PR target/101804
        * config/i386/constraints.md (BC): Document for integer SSE
        constant all bits set operand.
        (BF): New constraint for const floating-point all bits set
        vectors.
        * config/i386/i386.c (standard_sse_constant_p): Likewise.
        (standard_sse_constant_opcode): Likewise.
        * config/i386/sse.md (sseconstm1): New mode attribute.
        (mov<mode>_internal): Replace BC with <sseconstm1>.

2021-08-10  liuhongt  <hongtao.liu@intel.com>

        * config/i386/sse.md (cond_<insn><mode>): New expander.
        (VI248_AVX512VLBW): New mode iterator.
        * config/i386/predicates.md
        (nonimmediate_or_const_vec_dup_operand): New predicate.

2021-08-09  Andrew MacLeod  <amacleod@redhat.com>

        PR tree-optimization/101741
        * gimple-range-fold.cc (fold_using_range::range_of_builtin_call): Check
        type of parameter for toupper/tolower.

2021-08-09  Martin Jambor  <mjambor@suse.cz>

        PR testsuite/101654
        * ipa-prop.c (propagate_controlled_uses): Removed a spurious space.

2021-08-09  Pat Haugen  <pthaugen@linux.ibm.com>

        * config/rs6000/rs6000.c (is_load_insn1): Verify destination is a
        register.
        (is_store_insn1): Verify source is a register.

2021-08-09  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/101812
        * config/i386/mmx.md (<any_logic:code>v2sf3):
        Rename from *mmx_<any_logic:code>v2sf3

2021-08-09  Thomas Schwinge  <thomas@codesourcery.com>

        * config/nvptx/nvptx.c: Cross-reference parts adapted in
        'gcc/omp-oacc-neuter-broadcast.cc'.
        * omp-low.c: Likewise.
        * omp-oacc-neuter-broadcast.cc: Cross-reference parts adapted from
        the above files.

2021-08-09  Julian Brown  <julian@codesourcery.com>
            Kwok Cheung Yeung  <kcy@codesourcery.com>
            Thomas Schwinge  <thomas@codesourcery.com>

        * config/gcn/gcn.c (gcn_init_builtins): Override decls for
        BUILT_IN_GOACC_SINGLE_START, BUILT_IN_GOACC_SINGLE_COPY_START,
        BUILT_IN_GOACC_SINGLE_COPY_END and BUILT_IN_GOACC_BARRIER.
        (gcn_goacc_validate_dims): Turn on worker partitioning unconditionally.
        (gcn_fork_join): Update comment.
        * config/gcn/gcn.opt (flag_worker_partitioning): Remove.
        (macc_experimental_workers): Remove unused option.

2021-08-09  Julian Brown  <julian@codesourcery.com>
            Nathan Sidwell  <nathan@codesourcery.com> (via 'gcc/config/nvptx/nvptx.c' master)
            Kwok Cheung Yeung  <kcy@codesourcery.com>
            Thomas Schwinge  <thomas@codesourcery.com>

        * Makefile.in (OBJS): Add omp-oacc-neuter-broadcast.o.
        * doc/tm.texi.in (TARGET_GOACC_CREATE_WORKER_BROADCAST_RECORD):
        Add documentation hook.
        * doc/tm.texi: Regenerate.
        * omp-oacc-neuter-broadcast.cc: New file.
        * omp-builtins.def (BUILT_IN_GOACC_BARRIER)
        (BUILT_IN_GOACC_SINGLE_START, BUILT_IN_GOACC_SINGLE_COPY_START)
        (BUILT_IN_GOACC_SINGLE_COPY_END): New builtins.
        * passes.def (pass_omp_oacc_neuter_broadcast): Add pass.
        * target.def (goacc.create_worker_broadcast_record): Add target
        hook.
        * tree-pass.h (make_pass_omp_oacc_neuter_broadcast): Add
        prototype.
        * config/gcn/gcn-protos.h (gcn_goacc_adjust_propagation_record):
        Rename prototype to...
        (gcn_goacc_create_worker_broadcast_record): ... this.
        * config/gcn/gcn-tree.c (gcn_goacc_adjust_propagation_record): Rename
        function to...
        (gcn_goacc_create_worker_broadcast_record): ... this.
        * config/gcn/gcn.c (TARGET_GOACC_ADJUST_PROPAGATION_RECORD):
        Rename to...
        (TARGET_GOACC_CREATE_WORKER_BROADCAST_RECORD): ... this.

2021-08-09  Tejas Belagod  <tejas.belagod@arm.com>

        PR target/101609
        * config/aarch64/aarch64-simd.md (vlshr<mode>3, vashr<mode>3): Use
        the right iterator.

2021-08-09  Thomas Schwinge  <thomas@codesourcery.com>

        * Makefile.in (GTFILES): Remove '$(srcdir)/omp-offload.c'.

2021-08-09  Thomas Schwinge  <thomas@codesourcery.com>

        * builtins.def (DEF_GOACC_BUILTIN, DEF_GOMP_BUILTIN): Don't
        consider '-foffload-abi'.
        * common.opt (-foffload-abi): Remove 'Var', 'Init'.
        * opts.c (common_handle_option) <-foffload-abi> [ACCEL_COMPILER]:
        Ignore.

2021-08-09  Thomas Schwinge  <thomas@codesourcery.com>

        * optc-gen.awk: Sanity check that 'Init' doesn't appear without
        'Var'.

2021-08-09  Thomas Schwinge  <thomas@codesourcery.com>

        * omp-builtins.def (BUILT_IN_ACC_GET_DEVICE_TYPE): Remove.

2021-08-09  Thomas Schwinge  <thomas@codesourcery.com>

        * doc/gty.texi (Files): Update.

2021-08-09  Thomas Schwinge  <thomas@codesourcery.com>

        * doc/gty.texi (Files): Fix GTY header file example.

2021-08-09  Roger Sayle  <roger@nextmovesoftware.com>

        * tree-ssa-ccp.c (value_mask_to_min_max): Helper function to
        determine the upper and lower bounds from a mask-value pair.
        (bit_value_unop) [ABS_EXPR, ABSU_EXPR]: Add support for
        absolute value and unsigned absolute value expressions.
        (bit_value_binop):  Initialize *VAL's precision.
        [LT_EXPR, LE_EXPR]: Use value_mask_to_min_max to determine
        upper and lower bounds of operands.  Add LE_EXPR/GE_EXPR
        support when the operands are unknown but potentially equal.
        [MIN_EXPR, MAX_EXPR]: Support minimum/maximum expressions.

2021-08-09  Bin Cheng  <bin.cheng@linux.alibaba.com>

        * config/aarch64/aarch64.md
        (*extend<SHORT:mode><GPI:mode>2_aarch64): Use %<GPI:w>0.

2021-08-08  Sergei Trofimovich  <siarheit@google.com>

        * lra-constraints.c: Fix s/otput/output/ typo.

2021-08-06  Martin Sebor  <msebor@redhat.com>

        * builtins.c (expand_builtin_memchr): Move to gimple-ssa-warn-access.cc.
        (expand_builtin_strcat): Same.
        (expand_builtin_stpncpy): Same.
        (expand_builtin_strncat): Same.
        (check_read_access): Same.
        (check_memop_access): Same.
        (expand_builtin_strlen): Move checks to gimple-ssa-warn-access.cc.
        (expand_builtin_strnlen): Same.
        (expand_builtin_memcpy): Same.
        (expand_builtin_memmove): Same.
        (expand_builtin_mempcpy): Same.
        (expand_builtin_strcpy): Same.
        (expand_builtin_strcpy_args): Same.
        (expand_builtin_stpcpy_1): Same.
        (expand_builtin_strncpy): Same.
        (expand_builtin_memset): Same.
        (expand_builtin_bzero): Same.
        (expand_builtin_strcmp): Same.
        (expand_builtin_strncmp): Same.
        (expand_builtin): Remove handlers.
        (fold_builtin_strlen): Add a comment.
        * builtins.h (check_access): Move to gimple-ssa-warn-access.cc.
        * calls.c (maybe_warn_nonstring_arg): Same.
        * diagnostic-spec.c (nowarn_spec_t::nowarn_spec_t): Add warning option.
        * gimple-fold.c (gimple_fold_builtin_strcpy): Pass argument to callee.
        (gimple_fold_builtin_stpcpy): Same.
        * gimple-ssa-warn-access.cc (has_location): New function.
        (get_location): Same.
        (get_callee_fndecl): Same.
        (call_nargs): Same.
        (call_arg): Same.
        (warn_string_no_nul): Define.
        (unterminated_array): Same.
        (check_nul_terminated_array): Same.
        (maybe_warn_nonstring_arg): Same.
        (maybe_warn_for_bound): Same.
        (warn_for_access): Same.
        (check_access): Same.
        (check_memop_access): Same.
        (check_read_access): Same.
        (warn_dealloc_offset): Use helper functions.
        (maybe_emit_free_warning): Same.
        (class pass_waccess): Add members.
        (check_strcat): New function.
        (check_strncat): New function.
        (check_stxcpy): New function.
        (check_stxncpy): New function.
        (check_strncmp): New function.
        (pass_waccess::check_builtin): New function.
        (pass_waccess::check): Call it.
        * gimple-ssa-warn-access.h (warn_string_no_nul): Move here from
        builtins.h.
        (maybe_warn_for_bound): Same.
        (check_access): Same.
        (check_memop_access): Same.
        (check_read_access): Same.
        * pointer-query.h (struct access_data): Define a ctor overload.

2021-08-06  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101801
        * tree-vectorizer.h (vect_worthwhile_without_simd_p): Rename...
        (vect_can_vectorize_without_simd_p): ... to this.
        * tree-vect-loop.c (vect_worthwhile_without_simd_p): Rename...
        (vect_can_vectorize_without_simd_p): ... to this and fold
        in vect_min_worthwhile_factor.
        (vect_min_worthwhile_factor): Remove.
        (vectorizable_reduction): Adjust and remove the cost part.
        * tree-vect-stmts.c (vectorizable_shift): Likewise.
        (vectorizable_operation): Likewise.

2021-08-06  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/101797
        * config/i386/i386.md (cmove reg-to-reg move elimination peephole2s):
        Add general_gr_operand predicate to operand 3.

2021-08-06  Roger Sayle  <roger@nextmovesoftware.com>

        * tree-ssa-phiopt.c (cond_removal_in_builtin_zero_pattern): Use
        CFN_BUILT_IN_CLRSB* instead of BUILT_IN_CLRSB* for consistency.

2021-08-06  Tamar Christina  <tamar.christina@arm.com>

        * config/aarch64/aarch64-sve-builtins.cc (register_svpattern,
        register_svprfop): Pass vec<> by pointer.
        * langhooks-def.h (lhd_simulate_enum_decl): Likewise.
        * langhooks.c (lhd_simulate_enum_decl): Likewise.
        * langhooks.h (struct lang_hooks_for_types): Likewise.

2021-08-06  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/arm_neon.h (vst1_bf16_x2): Use
        __builtin_memcpy instead of constructing an additional
        __builtin_aarch64_simd_oi one vector at a time.
        (vst1q_bf16_x2): Likewise.
        (vst1_bf16_x3): Use __builtin_memcpy instead of constructing
        an additional __builtin_aarch64_simd_ci one vector at a time.
        (vst1q_bf16_x3): Likewise.
        (vst1_bf16_x4): Use __builtin_memcpy instead of a union.
        (vst1q_bf16_x4): Likewise.
        (vst2_bf16): Use __builtin_memcpy instead of constructing an
        additional __builtin_aarch64_simd_oi one vector at a time.
        (vst2q_bf16): Likewise.
        (vst3_bf16): Use __builtin_memcpy instead of constructing an
        additional __builtin_aarch64_simd_ci mode one vector at a
        time.
        (vst3q_bf16): Likewise.
        (vst4_bf16): Use __builtin_memcpy instead of constructing an
        additional __builtin_aarch64_simd_xi one vector at a time.
        (vst4q_bf16): Likewise.

2021-08-06  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/arm_neon.h (__ST2_LANE_FUNC): Delete.
        (__ST2Q_LANE_FUNC): Delete.
        (vst2_lane_f16): Use __builtin_memcpy to copy vector
        structure instead of constructing __builtin_aarch64_simd_oi
        one vector at a time.
        (vst2_lane_f32): Likewise.
        (vst2_lane_f64): Likewise.
        (vst2_lane_p8): Likewise.
        (vst2_lane_p16): Likewise.
        (vst2_lane_p64): Likewise.
        (vst2_lane_s8): Likewise.
        (vst2_lane_s16): Likewise.
        (vst2_lane_s32): Likewise.
        (vst2_lane_s64): Likewise.
        (vst2_lane_u8): Likewise.
        (vst2_lane_u16): Likewise.
        (vst2_lane_u32): Likewise.
        (vst2_lane_u64): Likewise.
        (vst2_lane_bf16): Likewise.
        (vst2q_lane_f16): Use __builtin_memcpy to copy vector
        structure instead of using a union.
        (vst2q_lane_f32): Likewise.
        (vst2q_lane_f64): Likewise.
        (vst2q_lane_p8): Likewise.
        (vst2q_lane_p16): Likewise.
        (vst2q_lane_p64): Likewise.
        (vst2q_lane_s8): Likewise.
        (vst2q_lane_s16): Likewise.
        (vst2q_lane_s32): Likewise.
        (vst2q_lane_s64): Likewise.
        (vst2q_lane_u8): Likewise.
        (vst2q_lane_u16): Likewise.
        (vst2q_lane_u32): Likewise.
        (vst2q_lane_u64): Likewise.
        (vst2q_lane_bf16): Likewise.

2021-08-06  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/arm_neon.h (__ST3_LANE_FUNC): Delete.
        (__ST3Q_LANE_FUNC): Delete.
        (vst3_lane_f16): Use __builtin_memcpy to copy vector
        structure instead of constructing __builtin_aarch64_simd_ci
        one vector at a time.
        (vst3_lane_f32): Likewise.
        (vst3_lane_f64): Likewise.
        (vst3_lane_p8): Likewise.
        (vst3_lane_p16): Likewise.
        (vst3_lane_p64): Likewise.
        (vst3_lane_s8): Likewise.
        (vst3_lane_s16): Likewise.
        (vst3_lane_s32): Likewise.
        (vst3_lane_s64): Likewise.
        (vst3_lane_u8): Likewise.
        (vst3_lane_u16): Likewise.
        (vst3_lane_u32): Likewise.
        (vst3_lane_u64): Likewise.
        (vst3_lane_bf16): Likewise.
        (vst3q_lane_f16): Use __builtin_memcpy to copy vector
        structure instead of using a union.
        (vst3q_lane_f32): Likewise.
        (vst3q_lane_f64): Likewise.
        (vst3q_lane_p8): Likewise.
        (vst3q_lane_p16): Likewise.
        (vst3q_lane_p64): Likewise.
        (vst3q_lane_s8): Likewise.
        (vst3q_lane_s16): Likewise.
        (vst3q_lane_s32): Likewise.
        (vst3q_lane_s64): Likewise.
        (vst3q_lane_u8): Likewise.
        (vst3q_lane_u16): Likewise.
        (vst3q_lane_u32): Likewise.
        (vst3q_lane_u64): Likewise.
        (vst3q_lane_bf16): Likewise.

2021-08-06  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/arm_neon.h (__ST4_LANE_FUNC): Delete.
        (__ST4Q_LANE_FUNC): Delete.
        (vst4_lane_f16): Use __builtin_memcpy to copy vector
        structure instead of constructing __builtin_aarch64_simd_xi
        one vector at a time.
        (vst4_lane_f32): Likewise.
        (vst4_lane_f64): Likewise.
        (vst4_lane_p8): Likewise.
        (vst4_lane_p16): Likewise.
        (vst4_lane_p64): Likewise.
        (vst4_lane_s8): Likewise.
        (vst4_lane_s16): Likewise.
        (vst4_lane_s32): Likewise.
        (vst4_lane_s64): Likewise.
        (vst4_lane_u8): Likewise.
        (vst4_lane_u16): Likewise.
        (vst4_lane_u32): Likewise.
        (vst4_lane_u64): Likewise.
        (vst4_lane_bf16): Likewise.
        (vst4q_lane_f16): Use __builtin_memcpy to copy vector
        structure instead of using a union.
        (vst4q_lane_f32): Likewise.
        (vst4q_lane_f64): Likewise.
        (vst4q_lane_p8): Likewise.
        (vst4q_lane_p16): Likewise.
        (vst4q_lane_p64): Likewise.
        (vst4q_lane_s8): Likewise.
        (vst4q_lane_s16): Likewise.
        (vst4q_lane_s32): Likewise.
        (vst4q_lane_s64): Likewise.
        (vst4q_lane_u8): Likewise.
        (vst4q_lane_u16): Likewise.
        (vst4q_lane_u32): Likewise.
        (vst4q_lane_u64): Likewise.
        (vst4q_lane_bf16): Likewise.

2021-08-06  Martin Liska  <mliska@suse.cz>

        * config/rs6000/rs6000.c (rs6000_option_override_internal): When
        a target option is restored, it can have
        rs6000_long_double_type_size set to FLOAT_PRECISION_TFmode
        and error should not be emitted.

2021-08-06  Sebastian Huber  <sebastian.huber@embedded-brains.de>

        * gcov-io.h (gcov_write): Declare.
        * gcov-io.c (gcov_write): New.
        (gcov_write_counter): Remove.
        (gcov_write_tag_length): Likewise.
        (gcov_write_summary): Replace gcov_write_tag_length() with calls to
        gcov_write_unsigned().
        * doc/invoke.texi (fprofile-info-section): Mention
        __gcov_info_to_gdca().

2021-08-06  Martin Sebor  <msebor@redhat.com>

        * dominance.c (prune_bbs_to_update_dominators): Adjust by-value vec
        arguments to by-reference.
        (iterate_fix_dominators): Same.
        * dominance.h (iterate_fix_dominators): Same.
        * ipa-prop.h: Call auto_vec::to_vec_legacy.
        * tree-data-ref.c (dump_data_dependence_relation): Adjust by-value vec
        arguments to by-reference.
        (debug_data_dependence_relation): Same.
        (dump_data_dependence_relations): Same.
        * tree-data-ref.h (debug_data_dependence_relation): Same.
        (dump_data_dependence_relations): Same.
        * tree-predcom.c (dump_chains): Same.
        (initialize_root_vars_lm): Same.
        (determine_unroll_factor): Same.
        (replace_phis_by_defined_names): Same.
        (insert_init_seqs): Same.
        (pcom_worker::tree_predictive_commoning_loop): Call
         auto_vec::to_vec_legacy.
        * tree-ssa-pre.c (insert_into_preds_of_block): Adjust by-value vec
        arguments to by-reference.
        * tree-ssa-threadbackward.c (populate_worklist): Same.
        (back_threader::resolve_def): Same.
        * tree-vect-data-refs.c (vect_check_nonzero_value): Same.
        (vect_enhance_data_refs_alignment): Same.
        (vect_check_lower_bound): Same.
        (vect_prune_runtime_alias_test_list): Same.
        (vect_permute_store_chain): Same.
        * tree-vect-slp-patterns.c (vect_normalize_conj_loc): Same.
        * tree-vect-stmts.c (vect_create_vectorized_demotion_stmts): Same.
        * tree-vectorizer.h (vect_permute_store_chain): Same.
        * vec.c (test_init): New function.
        (vec_c_tests): Call new function.
        * vec.h (vec): Declare ctors, dtor, and assignment.
        (auto_vec::vec_to_legacy): New function.
        (vec::copy): Adjust initialization.

2021-08-05  H.J. Lu  <hjl.tools@gmail.com>

        PR target/99744
        * config/i386/i386.c (ix86_can_inline_p): Ignore MASK_80387 if
        callee only uses GPRs.
        * config/i386/ia32intrin.h: Revert commit 5463cee2770.
        * config/i386/serializeintrin.h: Revert commit 71958f740f1.
        * config/i386/x86gprintrin.h: Add
        #pragma GCC target("general-regs-only") and #pragma GCC pop_options
        to disable non-GPR ISAs.

2021-08-05  Richard Sandiford  <richard.sandiford@arm.com>

        PR middle-end/101787
        * doc/md.texi (cond_ashl, cond_ashr, cond_lshr): Document.

2021-08-05  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (vect_is_store_elt_extraction, vect_is_reduction)
        (vect_reduc_type, vect_embedded_comparison_type, vect_comparison_type)
        (vect_is_extending_load, vect_is_integer_truncation): New functions,
        moved from aarch64.c but given different names.
        * config/aarch64/aarch64.c (aarch64_is_store_elt_extraction)
        (aarch64_is_reduction, aarch64_reduc_type)
        (aarch64_embedded_comparison_type, aarch64_comparison_type)
        (aarch64_extending_load_p, aarch64_integer_truncation_p): Delete
        in favor of the above.  Update callers accordingly.

2021-08-05  Richard Earnshaw  <rearnsha@arm.com>

        PR target/101723
        * config/arm/arm-cpus.in (generic-armv7-a): Add quirk to suppress
        writing .cpu directive in asm output.
        * config/arm/arm.c (arm_identify_fpu_from_isa): New variable.
        (arm_last_printed_arch_string): Delete.
        (arm_last-printed_fpu_string): Delete.
        (arm_configure_build_target): If use of floating-point/SIMD is
        disabled, remove all fp/simd related features from the target ISA.
        (last_arm_targ_options): New variable.
        (arm_print_asm_arch_directives): Add new parameters.  Change order
        of emitted directives and handle all cases here.
        (arm_file_start): Always call arm_print_asm_arch_directives, move
        all generation of .arch/.arch_extension here.
        (arm_file_end): Call arm_print_asm_arch.
        (arm_declare_function_name): Call arm_print_asm_arch_directives
        instead of printing .arch/.fpu directives directly.

2021-08-05  Richard Earnshaw  <rearnsha@arm.com>

        * config/arm/arm.c (arm_configure_build_target): Don't call
        arm_option_reconfigure_globals.
        (arm_option_restore): Call arm_option_reconfigure_globals after
        reconfiguring the target.
        * config/arm/arm-c.c (arm_pragma_target_parse): Likewise.

2021-08-05  Richard Earnshaw  <rearnsha@arm.com>

        * config/arm/arm.c (arm_configure_build_target): Ensure the target's
        arch_name is always set.

2021-08-05  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64.c: Traverse RTL tree to prevent cost
        of vec_select high-half from being added into Neon subtract
        cost.

2021-08-05  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64.c: Traverse RTL tree to prevent cost
        of vec_select high-half from being added into Neon add cost.

2021-08-05  Kewen Lin  <linkw@linux.ibm.com>

        * cfgloop.h (loops_list::loops_list): Add one optional argument
        root and adjust accordingly, update loop tree walking and factor
        out to ...
        * cfgloop.c (loops_list::walk_loop_tree): ... this.  New function.

2021-08-05  Eric Botcazou  <ebotcazou@gcc.gnu.org>

        PR tree-optimization/101626
        * tree-sra.c (propagate_subaccesses_from_rhs): Do not set the
        reverse scalar storage order on a pointer or vector component.

2021-08-05  liuhongt  <hongtao.liu@intel.com>

        * config/i386/sse.md (cond_<code><mode>): New expander.

2021-08-05  liuhongt  <hongtao.liu@intel.com>

        * config/i386/sse.md (cond_<code><mode>): New expander.

2021-08-05  liuhongt  <hongtao.liu@intel.com>

        * config/i386/sse.md (cond_<code><mode>): New expander.

2021-08-04  David Malcolm  <dmalcolm@redhat.com>

        PR analyzer/101570
        * Makefile.in (ANALYZER_OBJS): Add analyzer/region-model-asm.o.

2021-08-04  H.J. Lu  <hjl.tools@gmail.com>

        PR target/101742
        * config/i386/i386.h (STORE_MAX_PIECES): Allow 16/32/64 bytes
        only if TARGET_INTER_UNIT_MOVES_TO_VEC is true.

2021-08-04  H.J. Lu  <hjl.tools@gmail.com>

        PR target/101772
        * config/i386/i386-expand.c (ix86_expand_vector_move): Call
        ix86_gen_scratch_sse_rtx to get a scratch SSE register to copy
        data with SSE register from one memory location to another.

2021-08-04  Andreas Krebbel  <krebbel@linux.ibm.com>

        * config/s390/s390.c (expand_perm_with_vpdi): New function.
        (vectorize_vec_perm_const_1): Call expand_perm_with_vpdi.
        * config/s390/vector.md (*vpdi1<mode>, @vpdi1<mode>): Enable a
        parameterized expander.
        (*vpdi4<mode>, @vpdi4<mode>): Likewise.

2021-08-04  Andreas Krebbel  <krebbel@linux.ibm.com>

        * config/s390/s390.c (MAX_VECT_LEN): Define macro.
        (struct expand_vec_perm_d): Define struct.
        (expand_perm_with_merge): New function.
        (vectorize_vec_perm_const_1): New function.
        (s390_vectorize_vec_perm_const): New function.
        (TARGET_VECTORIZE_VEC_PERM_CONST): Define target macro.

2021-08-04  Andreas Krebbel  <krebbel@linux.ibm.com>

        * config/s390/vector.md (V_HW_64): Remove mode iterator.
        (*vec_load_pair<mode>): Use V_HW_2 instead of V_HW_64.
        * config/s390/vx-builtins.md
        (vec_scatter_element<V_HW_2:mode>_SI): Use V_HW_2 instead of
        V_HW_64.

2021-08-04  Andreas Krebbel  <krebbel@linux.ibm.com>

        * config/s390/s390.md (UNSPEC_VEC_PERMI): Remove constant
        definition.
        * config/s390/vector.md (*vpdi1<mode>, *vpdi4<mode>): New pattern
        definitions.
        * config/s390/vx-builtins.md (*vec_permi<mode>): Emit generic rtx
        instead of an unspec.

2021-08-04  Andreas Krebbel  <krebbel@linux.ibm.com>

        * config/s390/s390-modes.def: Add more vector modes to support
        concatenation of two vectors.
        * config/s390/s390-protos.h (s390_expand_merge_perm_const): Add
        prototype.
        (s390_expand_merge): Likewise.
        * config/s390/s390.c (s390_expand_merge_perm_const): New function.
        (s390_expand_merge): New function.
        * config/s390/s390.md (UNSPEC_VEC_MERGEH, UNSPEC_VEC_MERGEL):
        Remove constant definitions.
        * config/s390/vector.md (V_HW_2): Add mode iterators.
        (VI_HW_4, V_HW_4): Rename VI_HW_4 to V_HW_4.
        (vec_2x_nelts, vec_2x_wide): New mode attributes.
        (*vmrhb, *vmrlb, *vmrhh, *vmrlh, *vmrhf, *vmrlf, *vmrhg, *vmrlg):
        New pattern definitions.
        (vec_widen_umult_lo_<mode>, vec_widen_umult_hi_<mode>)
        (vec_widen_smult_lo_<mode>, vec_widen_smult_hi_<mode>)
        (vec_unpacks_lo_v4sf, vec_unpacks_hi_v4sf, vec_unpacks_lo_v2df)
        (vec_unpacks_hi_v2df): Adjust expanders to emit non-unspec RTX for
        vec merge.
        * config/s390/vx-builtins.md (V_HW_4): Remove mode iterator. Now
        in vector.md.
        (vec_mergeh<mode>, vec_mergel<mode>): Use s390_expand_merge to
        emit vec merge pattern.

2021-08-04  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64.c (aarch64_strip_extend_vec_half):
        Define.
        (aarch64_rtx_mult_cost): Traverse RTL tree to prevent cost of
        vec_select high-half from being added into Neon multiply
        cost.
        * rtlanal.c (vec_series_highpart_p): Define.
        * rtlanal.h (vec_series_highpart_p): Declare.

2021-08-04  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64.c (aarch64_strip_duplicate_vec_elt):
        Define.
        (aarch64_rtx_mult_cost): Traverse RTL tree to prevent
        vec_select cost from being added into Neon multiply cost.

2021-08-04  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-loop.c (vect_better_loop_vinfo_p): Detect cases in
        which old_loop_vinfo is an epilogue loop that handles a constant
        number of iterations.

2021-08-04  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-loop.c (vect_analyze_loop): Print a dump message
        when a reanalyzed loop fails to be cheaper than the current
        main loop.

2021-08-04  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64.c: Fix a typo.

2021-08-04  Vincent Lefèvre  <vincent-gcc@vinc17.net>

        PR gcov-profile/101773
        * gcov-io.c (gcov_close): Check return code of a fclose.

2021-08-04  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        PR ada/101575
        * dwarf2out.c (dwarf2out_assembly_start): Emit a dummy
        .file statement when needed.

2021-08-04  Richard Biener  <rguenther@suse.de>

        * tree-vect-data-refs.c (vect_check_gather_scatter):
        Include widening conversions only when the result is
        still handed by native gather or the current offset
        size not already matches the data size.
        Also succeed analysis in case there's no native support,
        noted by a IFN_LAST ifn and a NULL decl.
        (vect_analyze_data_refs): Always consider gathers.
        * tree-vect-patterns.c (vect_recog_gather_scatter_pattern):
        Test for no IFN gather rather than decl gather.
        * tree-vect-stmts.c (vect_model_load_cost): Pass in the
        gather-scatter info and cost emulated gathers accordingly.
        (vect_truncate_gather_scatter_offset): Properly test for
        no IFN gather.
        (vect_use_strided_gather_scatters_p): Likewise.
        (get_load_store_type): Handle emulated gathers and its
        restrictions.
        (vectorizable_load): Likewise.  Emulate them by extracting
        scalar offsets, doing scalar loads and a vector construct.

2021-08-04  H.J. Lu  <hjl.tools@gmail.com>

        PR target/101742
        * expr.c (op_by_pieces_d::op_by_pieces_d): Add a max_pieces
        argument to set m_max_size.
        (move_by_pieces_d): Pass MOVE_MAX_PIECES to op_by_pieces_d.
        (store_by_pieces_d): Pass STORE_MAX_PIECES to op_by_pieces_d.
        (compare_by_pieces_d): Pass COMPARE_MAX_PIECES to op_by_pieces_d.

2021-08-04  Roger Sayle  <roger@nextmovesoftware.com>
            Marc Glisse  <marc.glisse@inria.fr>

        * match.pd (bit_ior, bit_xor): Canonicalize (X*C1)|(X*C2) and
        (X*C1)^(X*C2) as X*(C1+C2), and related variants, using
        tree_nonzero_bits to ensure that operands are bit-wise disjoint.

2021-08-04  Richard Biener  <rguenther@suse.de>

        * tree-ssa-forwprop.c (pass_forwprop::execute): Split
        out code to decompose vector loads ...
        (optimize_vector_load): ... here.  Generalize it to
        handle intermediate widening and TARGET_MEM_REF loads
        and apply it to loads with a supported vector mode as well.

2021-08-04  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101756
        * tree-vect-slp.c (vectorizable_bb_reduc_epilogue): Make sure
        the result of the reduction epilogue is compatible to the original
        scalar result.

2021-08-04  liuhongt  <hongtao.liu@intel.com>

        PR target/101743
        * config/i386/i386.md (peephole2): Refine predicate from
        register_operand to general_reg_operand.

2021-08-04  Aldy Hernandez  <aldyh@redhat.com>

        * gimple-range-path.h (path_range_query::dump): Mark override.

2021-08-04  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101769
        * tree-tailcall.c (eliminate_tail_call): Add the created loop
        for the first recursion and return it via the new output parameter.
        (optimize_tail_call): Pass through new output param.
        (tree_optimize_tail_calls_1): After creating all latches,
        add the created loop to the loop tree.  Do not mark loops for fixup.

2021-08-04  Martin Liska  <mliska@suse.cz>

        * doc/invoke.texi: Document threader-mode param.

2021-08-04  liuhongt  <hongtao.liu@intel.com>

        * config/i386/sse.md (cond_fma<mode>): New expander.
        (cond_fms<mode>): Ditto.
        (cond_fnma<mode>): Ditto.
        (cond_fnms<mode>): Ditto.

2021-08-03  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/vsx.md (*vsx_le_perm_store_<mode>): Use && instead of &.

2021-08-03  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/constraints.md: Remove "e" from the list of available
        constraint characters.

2021-08-03  Eugene Rozenfeld  <erozen@microsoft.com>

        PR gcov-profile/71672
        * auto-profile.c (afdo_indirect_call): Fix setup of the historgram value for indirect calls.

2021-08-03  Paul A. Clarke  <pc@us.ibm.com>

        * config/rs6000/smmintrin.h (_mm_minpos_epu16): New.

2021-08-03  H.J. Lu  <hjl.tools@gmail.com>

        * config/i386/i386.c (ix86_gen_scratch_sse_rtx): In 64-bit mode,
        try XMM31 to avoid vzeroupper.

2021-08-03  Richard Sandiford  <richard.sandiford@arm.com>

        * doc/invoke.texi: Document -mtune=neoverse-512tvb and
        -mcpu=neoverse-512tvb.
        * config/aarch64/aarch64-cores.def (neoverse-512tvb): New entry.
        * config/aarch64/aarch64-tune.md: Regenerate.
        * config/aarch64/aarch64.c (neoverse512tvb_sve_vector_cost)
        (neoverse512tvb_sve_issue_info, neoverse512tvb_vec_issue_info)
        (neoverse512tvb_vector_cost, neoverse512tvb_tunings): New structures.
        (aarch64_adjust_body_cost_sve): Handle -mtune=neoverse-512tvb.
        (aarch64_adjust_body_cost): Likewise.

2021-08-03  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64.c (aarch64_add_stmt_cost): Only
        record issue information for operations that occur in the
        innermost loop.

2021-08-03  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64.c (aarch64_multiply_add_p): Add a vec_flags
        parameter.  Detect cases in which an Advanced SIMD MLA would almost
        certainly require a MOV.
        (aarch64_count_ops): Update accordingly.

2021-08-03  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64.c (aarch64_is_store_elt_extraction): New
        function, split out from...
        (aarch64_detect_vector_stmt_subtype): ...here.
        (aarch64_add_stmt_cost): Treat extracting element 0 as free.

2021-08-03  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64-protos.h (sve_vec_cost):
        Add gather_load_x32_cost and gather_load_x64_cost.
        * config/aarch64/aarch64.c (generic_sve_vector_cost)
        (a64fx_sve_vector_cost, neoversev1_sve_vector_cost): Update
        accordingly, using the values given by the scalar_load * number
        of elements calculation that we used previously.
        (aarch64_detect_vector_stmt_subtype): Use the new fields.

2021-08-03  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64.c (aarch64_adjust_body_cost_sve): New
        function, split out from...
        (aarch64_adjust_body_cost): ...here.

2021-08-03  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/fractional-cost.h: New file.
        * config/aarch64/aarch64.c: Include <algorithm> (indirectly)
        and cost_fraction.h.
        (vec_cost_fraction): New typedef.
        (aarch64_detect_scalar_stmt_subtype): Use it for statement costs.
        (aarch64_detect_vector_stmt_subtype): Likewise.
        (aarch64_sve_adjust_stmt_cost, aarch64_adjust_stmt_cost): Likewise.
        (aarch64_estimate_min_cycles_per_iter): Use vec_cost_fraction
        for cycle counts.
        (aarch64_adjust_body_cost): Likewise.
        (aarch64_test_cost_fraction): New function.
        (aarch64_run_selftests): Call it.

2021-08-03  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64-protos.h (tune_params::sve_width): Turn
        into a bitmask.
        * config/aarch64/aarch64.c (aarch64_cmp_autovec_modes): Update
        accordingly.
        (aarch64_estimated_poly_value): Likewise.  Use the least significant
        set bit for the minimum and likely values.  Use the most significant
        set bit for the maximum value.

2021-08-03  liuhongt  <hongtao.liu@intel.com>

        * config/i386/sse.md (cond_<insn><mode>): New expander.
        (cond_mul<mode>): Ditto.

2021-08-03  Kewen Lin  <linkw@linux.ibm.com>

        * tree-cfg.c (move_sese_region_to_fn): Fix typos on dloop.

2021-08-03  liuhongt  <hongtao.liu@intel.com>

        * config/i386/sse.md (cond_<insn><mode>):New expander.
        (cond_mul<mode>): Ditto.
        (cond_div<mode>): Ditto.

2021-08-02  H.J. Lu  <hjl.tools@gmail.com>

        * config/i386/i386.c (ix86_finalize_stack_frame_flags): Also
        check stack_realign_needed for stack realignment.
        (ix86_legitimate_constant_p): Always allow CONST_WIDE_INT smaller
        than the largest integer supported by vector register.
        * config/i386/i386.h (MAX_MOVE_MAX): New.  Set to 64.
        (MOVE_MAX): Set to bytes of the largest integer supported by
        vector register.
        (STORE_MAX_PIECES): New.

2021-08-02  H.J. Lu  <hjl.tools@gmail.com>

        * config/i386/i386-expand.c (ix86_expand_vector_move): Call
        ix86_gen_scratch_sse_rtx to get a scratch SSE register to copy
        data from one memory location to another.

2021-08-02  H.J. Lu  <hjl.tools@gmail.com>

        PR middle-end/90773
        * config/i386/i386.c (TARGET_GEN_MEMSET_SCRATCH_RTX): New.

2021-08-02  Aldy Hernandez  <aldyh@redhat.com>

        PR tree-optimization/101724
        * params.opt: Remove --param=threader-iterative.
        * tree-ssa-threadbackward.c (pass_thread_jumps::execute): Remove
        iterative mode.

2021-08-02  Tom de Vries  <tdevries@suse.de>

        PR middle-end/101665
        * doc/extend.texi (nonnull attribute): Improve documentation.

2021-08-02  Andrew Pinski  <apinski@marvell.com>

        PR rtl-optimization/101683
        * rtlanal.c (may_trap_p_1): Handle UNSIGNED_FIX.

2021-08-02  Roger Sayle  <roger@nextmovesoftware.com>

        * tree-ssa-phiopt.c (cond_removal_in_builtin_zero_pattern):
        Renamed from cond_removal_in_popcount_clz_ctz_pattern.
        Add support for BSWAP, FFS, PARITY and CLRSB builtins.
        (tree_ssa_phiop_worker): Update call to function above.

2021-08-01  H.J. Lu  <hjl.tools@gmail.com>

        PR target/78103
        * config/i386/i386.md (bsr_rex64_1_zext): New.
        (combine splitter for constant - clzll): Replace gen_bsr_rex64_1
        with gen_bsr_rex64_1_zext.

2021-07-31  Jakub Jelinek  <jakub@redhat.com>

        PR target/78103
        * config/i386/i386.md (bsr_rex64_1, bsr_1, bsr_zext_1): New
        define_insn patterns.
        (*bsr_rex64_2, *bsr_2): New define_insn_and_split patterns.
        Add combine splitters for constant - clz.
        (clz<mode>2): Use a temporary pseudo for bsr result.

2021-07-30  Paul A. Clarke  <pc@us.ibm.com>

        * config/rs6000/smmintrin.h (_mm_floor_pd, _mm_floor_ps,
        _mm_floor_sd, _mm_floor_ss): New.

2021-07-30  Paul A. Clarke  <pc@us.ibm.com>

        * config/rs6000/smmintrin.h (_mm_ceil_pd, _mm_ceil_ps,
        _mm_ceil_sd, _mm_ceil_ss): New.

2021-07-30  Paul A. Clarke  <pc@us.ibm.com>

        * config/rs6000/smmintrin.h (_mm_blend_pd, _mm_blendv_pd,
        _mm_blend_ps, _mm_blendv_ps): New.

2021-07-30  Roger Sayle  <roger@nextmovesoftware.com>
            Uroš Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.md (*dec_cmov<mode>): New define_insn_and_split
        to generate a conditional move using the carry flag after sub $1.
        (peephole2): Eliminate a register-to-register move by inverting
        the condition of a conditional move.

2021-07-30  Hans-Peter Nilsson  <hp@bitrange.com>

        * config/mmix/mmix.md ("call", "call_value", "*call_real")
        ("*call_value_real"): Don't generate rtx mentioning the generic
        operands 1 and 2 to "call", and similarly for "call_value".
        * config/mmix/mmix.c (mmix_print_operand_punct_valid_p)
        (mmix_print_operand): Use '!' instead of 'p'.

2021-07-30  Hans-Peter Nilsson  <hp@bitrange.com>

        * doc/md.texi (call): Correct information about operand 2.
        * config/mmix/mmix.md ("call", "call_value"): Remove fixed FIXMEs.

2021-07-30  Andrew MacLeod  <amacleod@redhat.com>

        * range-op.cc (operator_trunc_mod::wi_fold): Fold constants.

2021-07-30  Andrew MacLeod  <amacleod@redhat.com>

        * range-op.cc (operator_div::wi_fold): Return UNDEFINED for [0, 0] divisor.

2021-07-30  Andrew MacLeod  <amacleod@redhat.com>

        * gimple-range-cache.cc (*::set_bb_range): Change const basic_block to
        const_basic_block..
        (*::get_bb_range): Ditto.
        (*::bb_range_p): Ditto.
        * gimple-range-cache.h: Change prototypes.

2021-07-30  H.J. Lu  <hjl.tools@gmail.com>

        PR middle-end/90773
        * builtins.c (builtin_memcpy_read_str): Change the mode argument
        from scalar_int_mode to fixed_size_mode.
        (builtin_strncpy_read_str): Likewise.
        (gen_memset_value_from_prev): New function.
        (builtin_memset_read_str): Change the mode argument from
        scalar_int_mode to fixed_size_mode.  Use gen_memset_value_from_prev
        and support CONST_VECTOR.
        (builtin_memset_gen_str): Likewise.
        (try_store_by_multiple_pieces): Use by_pieces_constfn to declare
        constfun.
        * builtins.h (builtin_strncpy_read_str): Replace scalar_int_mode
        with fixed_size_mode.
        (builtin_memset_read_str): Likewise.
        * expr.c (widest_int_mode_for_size): Renamed to ...
        (widest_fixed_size_mode_for_size): Add a bool argument to
        indicate if QI vector mode can be used.
        (by_pieces_ninsns): Call widest_fixed_size_mode_for_size
        instead of widest_int_mode_for_size.
        (pieces_addr::adjust): Change the mode argument from
        scalar_int_mode to fixed_size_mode.
        (op_by_pieces_d): Make m_len read-only.  Add a bool member,
        m_qi_vector_mode, to indicate that QI vector mode can be used.
        (op_by_pieces_d::op_by_pieces_d): Add a bool argument to
        initialize m_qi_vector_mode.  Call widest_fixed_size_mode_for_size
        instead of widest_int_mode_for_size.
        (op_by_pieces_d::get_usable_mode): Change the mode argument from
        scalar_int_mode to fixed_size_mode.  Call
        widest_fixed_size_mode_for_size instead of
        widest_int_mode_for_size.
        (op_by_pieces_d::smallest_fixed_size_mode_for_size): New member
        function to return the smallest integer or QI vector mode.
        (op_by_pieces_d::run): Call widest_fixed_size_mode_for_size
        instead of widest_int_mode_for_size.  Call
        smallest_fixed_size_mode_for_size instead of
        smallest_int_mode_for_size.
        (store_by_pieces_d::store_by_pieces_d): Add a bool argument to
        indicate that QI vector mode can be used and pass it to
        op_by_pieces_d::op_by_pieces_d.
        (can_store_by_pieces): Call widest_fixed_size_mode_for_size
        instead of widest_int_mode_for_size.  Pass memsetp to
        widest_fixed_size_mode_for_size to support QI vector mode.
        Allow all CONST_VECTORs for memset if vec_duplicate is supported.
        (store_by_pieces): Pass memsetp to
        store_by_pieces_d::store_by_pieces_d.
        (clear_by_pieces_1): Removed.
        (clear_by_pieces): Replace clear_by_pieces_1 with
        builtin_memset_read_str and pass true to store_by_pieces_d to
        support vector mode broadcast.
        (string_cst_read_str): Change the mode argument from
        scalar_int_mode to fixed_size_mode.
        * expr.h (by_pieces_constfn): Change scalar_int_mode to
        fixed_size_mode.
        (by_pieces_prev): Likewise.
        * rtl.h (lowpart_subreg_regno): New.
        * rtlanal.c (lowpart_subreg_regno): New.  A wrapper around
        simplify_subreg_regno.
        * target.def (gen_memset_scratch_rtx): New hook.
        * doc/tm.texi.in: Add TARGET_GEN_MEMSET_SCRATCH_RTX.
        * doc/tm.texi: Regenerated.

2021-07-30  Xi Ruoyao  <xry111@mengyan1223.wang>

        PR target/94780
        * config/mips/mips.c (mips_atomic_assign_expand_fenv): Use
          TARGET_EXPR instead of MODIFY_EXPR.

2021-07-30  Xi Ruoyao  <xry111@mengyan1223.wang>

        PR target/101132
        * config/mips/mips-protos.h (mips_expand_vec_cmp_expr): Declare.
        * config/mips/mips.c (mips_expand_vec_cmp_expr): New function.
        * config/mips/mips-msa.md (vec_cmp<MSA:mode><mode_i>): New
          expander.
          (vec_cmpu<IMSA:mode><mode_i>): New expander.

2021-07-30  H.J. Lu  <hjl.tools@gmail.com>

        PR target/101685
        * config/i386/i386-options.c (ix86_option_override_internal):
        Don't enable LZCNT/POPCNT if they have been disabled explicitly.

2021-07-30  prathamesh.kulkarni  <prathamesh.kulkarni@linaro.org>

        PR target/66791
        * config/arm/arm_neon.h (vld1_p64): Replace call to builtin by
        explicitly dereferencing __a.
        (vld1_s64): Likewise.
        (vld1_u64): Likewise.
        * config/arm/arm_neon_builtins.def (vld1): Remove entry for di
        and change to VAR13.

2021-07-30  Aldy Hernandez  <aldyh@redhat.com>

        * gimple-loop-versioning.cc (lv_dom_walker::lv_dom_walker): Remove
        use of m_range_analyzer.
        (loop_versioning::lv_dom_walker::before_dom_children): Same.
        (loop_versioning::lv_dom_walker::after_dom_children): Remove.
        (loop_versioning::prune_loop_conditions): Replace vr_values use
        with range_query interface.
        (pass_loop_versioning::execute): Use ranger.

2021-07-30  Xi Ruoyao  <xry111@mengyan1223.wang>

        PR ipa/101396
        * ipa-devirt.c (ipa_odr_read_section): Compare the precision of
          enum values, and emit a warning if they mismatch.

2021-07-30  Kewen Lin  <linkw@linux.ibm.com>

        * cfgloop.h (as_const): New function.
        (class loop_iterator): Rename to ...
        (class loops_list): ... this.
        (loop_iterator::next): Rename to ...
        (loops_list::Iter::fill_curr_loop): ... this and adjust.
        (loop_iterator::loop_iterator): Rename to ...
        (loops_list::loops_list): ... this and adjust.
        (loops_list::Iter): New class.
        (loops_list::iterator): New type.
        (loops_list::const_iterator): New type.
        (loops_list::begin): New function.
        (loops_list::end): Likewise.
        (loops_list::begin const): Likewise.
        (loops_list::end const): Likewise.
        (FOR_EACH_LOOP): Remove.
        (FOR_EACH_LOOP_FN): Remove.
        * cfgloop.c (flow_loops_dump): Adjust FOR_EACH_LOOP* with range-based
        for loop with loops_list instance.
        (sort_sibling_loops): Likewise.
        (disambiguate_loops_with_multiple_latches): Likewise.
        (verify_loop_structure): Likewise.
        * cfgloopmanip.c (create_preheaders): Likewise.
        (force_single_succ_latches): Likewise.
        * config/aarch64/falkor-tag-collision-avoidance.c
        (execute_tag_collision_avoidance): Likewise.
        * config/mn10300/mn10300.c (mn10300_scan_for_setlb_lcc): Likewise.
        * config/s390/s390.c (s390_adjust_loops): Likewise.
        * doc/loop.texi: Likewise.
        * gimple-loop-interchange.cc (pass_linterchange::execute): Likewise.
        * gimple-loop-jam.c (tree_loop_unroll_and_jam): Likewise.
        * gimple-loop-versioning.cc (loop_versioning::analyze_blocks): Likewise.
        (loop_versioning::make_versioning_decisions): Likewise.
        * gimple-ssa-split-paths.c (split_paths): Likewise.
        * graphite-isl-ast-to-gimple.c (graphite_regenerate_ast_isl): Likewise.
        * graphite.c (canonicalize_loop_form): Likewise.
        (graphite_transform_loops): Likewise.
        * ipa-fnsummary.c (analyze_function_body): Likewise.
        * ipa-pure-const.c (analyze_function): Likewise.
        * loop-doloop.c (doloop_optimize_loops): Likewise.
        * loop-init.c (loop_optimizer_finalize): Likewise.
        (fix_loop_structure): Likewise.
        * loop-invariant.c (calculate_loop_reg_pressure): Likewise.
        (move_loop_invariants): Likewise.
        * loop-unroll.c (decide_unrolling): Likewise.
        (unroll_loops): Likewise.
        * modulo-sched.c (sms_schedule): Likewise.
        * predict.c (predict_loops): Likewise.
        (pass_profile::execute): Likewise.
        * profile.c (branch_prob): Likewise.
        * sel-sched-ir.c (sel_finish_pipelining): Likewise.
        (sel_find_rgns): Likewise.
        * tree-cfg.c (replace_loop_annotate): Likewise.
        (replace_uses_by): Likewise.
        (move_sese_region_to_fn): Likewise.
        * tree-if-conv.c (pass_if_conversion::execute): Likewise.
        * tree-loop-distribution.c (loop_distribution::execute): Likewise.
        * tree-parloops.c (parallelize_loops): Likewise.
        * tree-predcom.c (tree_predictive_commoning): Likewise.
        * tree-scalar-evolution.c (scev_initialize): Likewise.
        (scev_reset): Likewise.
        * tree-ssa-dce.c (find_obviously_necessary_stmts): Likewise.
        * tree-ssa-live.c (remove_unused_locals): Likewise.
        * tree-ssa-loop-ch.c (ch_base::copy_headers): Likewise.
        * tree-ssa-loop-im.c (analyze_memory_references): Likewise.
        (tree_ssa_lim_initialize): Likewise.
        * tree-ssa-loop-ivcanon.c (canonicalize_induction_variables): Likewise.
        * tree-ssa-loop-ivopts.c (tree_ssa_iv_optimize): Likewise.
        * tree-ssa-loop-manip.c (get_loops_exits): Likewise.
        * tree-ssa-loop-niter.c (estimate_numbers_of_iterations): Likewise.
        (free_numbers_of_iterations_estimates): Likewise.
        * tree-ssa-loop-prefetch.c (tree_ssa_prefetch_arrays): Likewise.
        * tree-ssa-loop-split.c (tree_ssa_split_loops): Likewise.
        * tree-ssa-loop-unswitch.c (tree_ssa_unswitch_loops): Likewise.
        * tree-ssa-loop.c (gate_oacc_kernels): Likewise.
        (pass_scev_cprop::execute): Likewise.
        * tree-ssa-propagate.c (clean_up_loop_closed_phi): Likewise.
        * tree-ssa-sccvn.c (do_rpo_vn): Likewise.
        * tree-ssa-threadupdate.c
        (jump_thread_path_registry::thread_through_all_blocks): Likewise.
        * tree-vectorizer.c (vectorize_loops): Likewise.
        * tree-vrp.c (vrp_asserts::find_assert_locations): Likewise.

2021-07-29  Hans-Peter Nilsson  <hp@bitrange.com>

        * config/mmix/mmix.c (mmix_function_arg_1): Avoid
        generating a VOIDmode register for e.g the
        function_arg_info::end_marker.

2021-07-29  Jeff Law  <jeffreyalaw@gmail.com>

        * config/h8300/h8300-modes.def: Add CCZ, CCV and CCC, drop CCZNV.
        * config/h8300/h8300.md (H8cc mode iterator): Add CCZ.
        (cc mode_attr): Similarly.
        (ccz subst_attr): Similarly.
        * config/h8300/jumpcall.md: Add new patterns for branch-on-bit.
        * config/h8300/testcompare.md: Remove various cc0 based patterns
        that had been commented out.  Add pattern to set CCZ from a bit
        test.

2021-07-29  Thomas Schwinge  <thomas@codesourcery.com>
            Julian Brown  <julian@codesourcery.com>
            Kwok Cheung Yeung  <kcy@codesourcery.com>

        * omp-offload.c (oacc_loop_xform_head_tail, oacc_loop_process):
        'update_stmt' after modification.
        (pass_oacc_loop_designation): New function, extracted out of...
        (pass_oacc_device_lower): ... this.
        (pass_data_oacc_loop_designation, pass_oacc_loop_designation)
        (make_pass_oacc_loop_designation): New
        * passes.def: Add it.
        * tree-parloops.c (create_parallel_loop): Adjust.
        * tree-pass.h (make_pass_oacc_loop_designation): New.

2021-07-29  Aldy Hernandez  <aldyh@redhat.com>

        * flag-types.h (enum threader_mode): New.
        * params.opt: Add entry for --param=threader-mode.
        * tree-ssa-threadbackward.c (THREADER_ITERATIVE_MODE): New.
        (class back_threader): New.
        (back_threader::back_threader): New.
        (back_threader::~back_threader): New.
        (back_threader::maybe_register_path): New.
        (back_threader::find_taken_edge): New.
        (back_threader::find_taken_edge_switch): New.
        (back_threader::find_taken_edge_cond): New.
        (back_threader::resolve_def): New.
        (back_threader::resolve_phi): New.
        (back_threader::find_paths_to_names): New.
        (back_threader::find_paths): New.
        (dump_path): New.
        (debug): New.
        (thread_jumps::find_jump_threads_backwards): Call ranger threader.
        (thread_jumps::find_jump_threads_backwards_with_ranger): New.
        (pass_thread_jumps::execute): Abstract out code...
        (try_thread_blocks): ...here.
        * tree-ssa-threadedge.c (jump_threader::thread_outgoing_edges):
        Abstract out threading candidate code to...
        (single_succ_to_potentially_threadable_block): ...here.
        * tree-ssa-threadedge.h (single_succ_to_potentially_threadable_block):
        New.
        * tree-ssa-threadupdate.c (register_jump_thread): Return boolean.
        * tree-ssa-threadupdate.h (class jump_thread_path_registry):
        Return bool from register_jump_thread.

2021-07-29  Andreas Krebbel  <krebbel@linux.ibm.com>

        * target.def: in0 and in1 do not need to be registers.
        * doc/tm.texi: Regenerate.

2021-07-29  liuhongt  <hongtao.liu@intel.com>

        PR target/39821
        * config/i386/i386.c (ix86_widen_mult_cost): New function.
        (ix86_add_stmt_cost): Use ix86_widen_mult_cost for
        WIDEN_MULT_EXPR.

2021-07-29  Jiufu Guo  <guojiufu@linux.ibm.com>

        PR target/61837
        * config/rs6000/rs6000.c (TARGET_PREFERRED_DOLOOP_MODE): New hook.
        (rs6000_preferred_doloop_mode): New hook.
        * doc/tm.texi: Regenerate.
        * doc/tm.texi.in: Add hook preferred_doloop_mode.
        * target.def (preferred_doloop_mode): New hook.
        * targhooks.c (default_preferred_doloop_mode): New hook.
        * targhooks.h (default_preferred_doloop_mode): New hook.
        * tree-ssa-loop-ivopts.c (compute_doloop_base_on_mode): New function.
        (add_iv_candidate_for_doloop): Call targetm.preferred_doloop_mode
        and compute_doloop_base_on_mode.

2021-07-28  Martin Sebor  <msebor@redhat.com>

        PR middle-end/101494
        * tree-ssa-uninit.c (maybe_warn_operand): Correct object offset
        and size computation.

2021-07-28  Martin Sebor  <msebor@redhat.com>

        PR middle-end/101601
        * gimple-array-bounds.cc (array_bounds_checker::check_mem_ref): Remove
        a pointless test.
        Handle pointers to functions.

2021-07-28  Martin Sebor  <msebor@redhat.com>

        * Makefile.in (OBJS): Add gimple-ssa-warn-access.o and pointer-query.o.
        * attribs.h (fndecl_dealloc_argno): Move fndecl_dealloc_argno to tree.h.
        * builtins.c (compute_objsize_r): Move to pointer-query.cc.
        (access_ref::access_ref): Same.
        (access_ref::phi): Same.
        (access_ref::get_ref): Same.
        (access_ref::size_remaining): Same.
        (access_ref::offset_in_range): Same.
        (access_ref::add_offset): Same.
        (access_ref::inform_access): Same.
        (ssa_name_limit_t::visit_phi): Same.
        (ssa_name_limit_t::leave_phi): Same.
        (ssa_name_limit_t::next): Same.
        (ssa_name_limit_t::next_phi): Same.
        (ssa_name_limit_t::~ssa_name_limit_t): Same.
        (pointer_query::pointer_query): Same.
        (pointer_query::get_ref): Same.
        (pointer_query::put_ref): Same.
        (pointer_query::flush_cache): Same.
        (warn_string_no_nul): Move to gimple-ssa-warn-access.cc.
        (check_nul_terminated_array): Same.
        (unterminated_array): Same.
        (maybe_warn_for_bound): Same.
        (check_read_access): Same.
        (warn_for_access): Same.
        (get_size_range): Same.
        (check_access): Same.
        (gimple_call_alloc_size): Move to tree.c.
        (gimple_parm_array_size): Move to pointer-query.cc.
        (get_offset_range): Same.
        (gimple_call_return_array): Same.
        (handle_min_max_size): Same.
        (handle_array_ref): Same.
        (handle_mem_ref): Same.
        (compute_objsize): Same.
        (gimple_call_alloc_p): Move to gimple-ssa-warn-access.cc.
        (call_dealloc_argno): Same.
        (fndecl_dealloc_argno): Same.
        (new_delete_mismatch_p): Same.
        (matching_alloc_calls_p): Same.
        (warn_dealloc_offset): Same.
        (maybe_emit_free_warning): Same.
        * builtins.h (check_nul_terminated_array): Move to
        gimple-ssa-warn-access.h.
        (check_nul_terminated_array): Same.
        (warn_string_no_nul): Same.
        (unterminated_array): Same.
        (class ssa_name_limit_t): Same.
        (class pointer_query): Same.
        (struct access_ref): Same.
        (class range_query): Same.
        (struct access_data): Same.
        (gimple_call_alloc_size): Same.
        (gimple_parm_array_size): Same.
        (compute_objsize): Same.
        (class access_data): Same.
        (maybe_emit_free_warning): Same.
        * calls.c (initialize_argument_information): Remove call to
        maybe_emit_free_warning.
        * gimple-array-bounds.cc: Include new header..
        * gimple-fold.c: Same.
        * gimple-ssa-sprintf.c: Same.
        * gimple-ssa-warn-restrict.c: Same.
        * passes.def: Add pass_warn_access.
        * tree-pass.h (make_pass_warn_access): Declare.
        * tree-ssa-strlen.c: Include new headers.
        * tree.c (fndecl_dealloc_argno): Move here from builtins.c.
        * tree.h (fndecl_dealloc_argno): Move here from attribs.h.
        * gimple-ssa-warn-access.cc: New file.
        * gimple-ssa-warn-access.h: New file.
        * pointer-query.cc: New file.
        * pointer-query.h: New file.

2021-07-28  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/101624
        * ubsan.c (maybe_instrument_pointer_overflow,
        instrument_object_size): Only test DECL_REGISTER on VAR_DECLs,
        PARM_DECLs or RESULT_DECLs.
        * sanopt.c (maybe_optimize_ubsan_ptr_ifn): Likewise.

2021-07-28  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/101642
        * match.pd (bswap16 (x) == bswap16 (y)): Cast both operands
        to type of bswap16 for comparison.
        (bswap16 (x) == cst): Cast bswap16 operand to type of cst.

2021-07-28  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101615
        * tree-vect-slp.c (vect_optimize_slp): Materialize permutes
        at CTOR SLP graph entries.

2021-07-28  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64.md (*extend<SHORT:mode><GPI:mode>2_aarch64):
        Add "r,w" alternative.

2021-07-28  H.J. Lu  <hjl.tools@gmail.com>

        PR target/101456
        * config/i386/i386.c (ix86_avx_u128_mode_needed): Don't set
        AVX_U128_DIRTY when all bits are zero.

2021-07-28  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101615
        * tree-vect-slp.c (vect_optimize_slp): Pre-existing vector
        external nodes cannot be permuted so make them perm_out 0.

2021-07-28  Andrew Stubbs  <ams@codesourcery.com>

        PR target/100208
        * config.in: Regenerate.
        * config/gcn/gcn-hsa.h (A_FIJI): New define.
        (A_900): New define.
        (A_906): New define.
        (A_908): New define.
        (ASM_SPEC): Use A_FIJI, A_900, A_906 and A_908.
        * config/gcn/gcn.c (output_file_start): Adjust attributes according
        to the assembler capabilities.
        * config/gcn/mkoffload.c (main): Likewise.
        * configure: Regenerate.
        * configure.ac: Add tests for LLVM assembler attribute features.

2021-07-28  Andrew MacLeod  <amacleod@redhat.com>

        * gimple-range-gori.cc (gori_compute::outgoing_edge_range_p): Check for
        cond_false and cond_true on branches.

2021-07-28  Bin Cheng  <bin.cheng@linux.alibaba.com>

        * config/aarch64/aarch64.c (aarch64_gen_adjusted_ldpstp): use
        gcc_stablesort.

2021-07-28  Bin Cheng  <bin.cheng@linux.alibaba.com>

        * alias.c (init_alias_analysis): Don't skip prologue/epilogue.

2021-07-28  Jakub Jelinek  <jakub@redhat.com>

        PR target/101611
        * config/i386/sse.md (vashr<mode>3): Split into vashrv8di3 expander
        and vashrv4di3 expander, where the latter requires just TARGET_AVX2
        and has special !TARGET_AVX512VL expansion.
        (vashrv2di3<mask_name>): Rename to ...
        (vashrv2di3): ... this.  Change condition to TARGET_XOP || TARGET_AVX2
        and add special !TARGET_XOP && !TARGET_AVX512VL expansion.

2021-07-28  Martin Uecker  <muecker@gwdg.de>

        * calls.c (maybe_warn_rdwr_sizes): Correct argument
        numbers in warning that were switched.

2021-07-28  Kewen Lin  <linkw@linux.ibm.com>

        PR tree-optimization/101596
        * tree-vect-patterns.c (vect_recog_mulhs_pattern): Fix wrong check
        by using new_type's precision instead.

2021-07-28  liuhongt  <hongtao.liu@intel.com>

        PR target/99881
        * config/i386/i386.h (processor_costs): Add new member
        integer_to_sse.
        * config/i386/x86-tune-costs.h (ix86_size_cost, i386_cost,
        i486_cost, pentium_cost, lakemont_cost, pentiumpro_cost,
        geode_cost, k6_cost, athlon_cost, k8_cost, amdfam10_cost,
        bdver_cost, znver1_cost, znver2_cost, znver3_cost,
        btver1_cost, btver2_cost, btver3_cost, pentium4_cost,
        nocona_cost, atom_cost, atom_cost, slm_cost, intel_cost,
        generic_cost, core_cost): Initialize integer_to_sse same value
        as sse_op.
        (skylake_cost): Initialize integer_to_sse twice as much as sse_op.
        * config/i386/i386.c (ix86_builtin_vectorization_cost):
        Use integer_to_sse instead of sse_op to calculate the cost of
        vec_construct.

2021-07-27  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000-gen-builtins.c (write_ovld_static_init): New
        function.
        (write_init_file): Call write_ovld_static_init.

2021-07-27  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000-gen-builtins.c (write_bif_static_init): New
        function.
        (write_init_file): Call write_bif_static_init.

2021-07-27  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000-gen-builtins.c (typemap): New struct.
        (TYPE_MAP_SIZE): New macro.
        (type_map): New initialized variable.
        (typemap_cmp): New function.
        (write_type_node): Likewise.
        (write_fntype_init): Implement.

2021-07-27  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/101584
        * tree-ssa-uninit.c (builtin_call_nomodifying_p): New function.
        (check_defs): Call it.

2021-07-27  Aldy Hernandez  <aldyh@redhat.com>

        * tree-ssa-dom.c (dom_jump_threader_simplifier):
        Put avail_exprs_stack in the class, instead of passing it to
        jump_threader_simplifier.
        (dom_jump_threader_simplifier::simplify): Add state argument.
        (dom_opt_dom_walker): Add state.
        (pass_dominator::execute): Pass state to threader.
        (dom_opt_dom_walker::before_dom_children): Use state.
        * tree-ssa-threadedge.c (jump_threader::jump_threader): Replace
        arguments by state.
        (jump_threader::record_temporary_equivalences_from_phis):
        Register equivalences through the state variable.
        (jump_threader::record_temporary_equivalences_from_stmts_at_dest):
        Record ranges in a statement through the state variable.
        (jump_threader::simplify_control_stmt_condition): Pass state to
        simplify.
        (jump_threader::simplify_control_stmt_condition_1): Same.
        (jump_threader::thread_around_empty_blocks): Remove obsolete
        comment.
        (jump_threader::thread_through_normal_block): Record equivalences
        on edge through the state variable.
        (jump_threader::thread_across_edge): Abstract state pushing.
        (jt_state::jt_state): New.
        (jt_state::push): New.
        (jt_state::pop): New.
        (jt_state::register_equiv): New.
        (jt_state::record_ranges_from_stmt): New.
        (jt_state::register_equivs_on_edge): New.
        (jump_threader_simplifier::jump_threader_simplifier): Move from
        header.
        (jump_threader_simplifier::simplify): Add state argument.
        * tree-ssa-threadedge.h (class jt_state): New.
        (class jump_threader): Add state to constructor.
        (class jump_threader_simplifier): Add state to simplify.  Remove
        avail_exprs_stack from class.
        * tree-vrp.c (vrp_jump_threader_simplifier::simplify): Add state
        argument.
        (vrp_jump_threader::vrp_jump_threader): Add state.
        (vrp_jump_threader::~vrp_jump_threader): Cleanup state.

2021-07-27  Aldy Hernandez  <aldyh@redhat.com>

        * Makefile.in (OBJS): Add gimple-range-path.o.
        * gimple-range-path.cc: New file.
        * gimple-range-path.h: New file.

2021-07-27  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd.md: Push sign/zero-extension
        inside vec_duplicate for all patterns.
        * simplify-rtx.c (simplify_context::simplify_unary_operation_1):
        Push sign/zero-extension inside vec_duplicate.

2021-07-27  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101573
        * tree-ssa-uninit.c (warn_uninit_phi_uses): New function
        looking at uninitialized PHI arg defs in some constrained cases.
        (warn_uninitialized_vars): Call it.
        (execute_early_warn_uninitialized): Calculate dominators.

2021-07-27  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/39821
        * tree-vect-stmts.c (vect_model_promotion_demotion_cost): Use
        vector_stmt for widening arithmetic.
        (vectorizable_conversion): Adjust.

2021-07-27  Martin Jambor  <mjambor@suse.cz>

        * cgraph.h (ipa_replace_map): New field force_load_ref.
        * ipa-prop.h (ipa_param_descriptor): Reduce precision of move_cost,
        aded new flag load_dereferenced, adjusted comments.
        (ipa_get_param_dereferenced): New function.
        (ipa_set_param_dereferenced): Likewise.
        * cgraphclones.c (cgraph_node::create_virtual_clone): Follow it.
        * ipa-cp.c: Include gimple.h.
        (ipcp_discover_new_direct_edges): Take into account dereferenced flag.
        (get_replacement_map): New parameter force_load_ref, set the
        appropriate flag in ipa_replace_map if set.
        (struct symbol_and_index_together): New type.
        (adjust_refs_in_act_callers): New function.
        (adjust_references_in_caller): Likewise.
        (create_specialized_node): When appropriate, call
        adjust_references_in_caller and force only load references.
        * ipa-prop.c (load_from_dereferenced_name): New function.
        (ipa_analyze_controlled_uses): Also detect loads from a
        dereference, harden testing of call statements.
        (ipa_write_node_info): Stream the dereferenced flag.
        (ipa_read_node_info): Likewise.
        (ipa_set_jf_constant): Also create refdesc when jump function
        references a variable.
        (cgraph_node_for_jfunc): Rename to symtab_node_for_jfunc, work
        also on references of variables and return a symtab_node.  Adjust
        all callers.
        (propagate_controlled_uses): Also remove references to VAR_DECLs.

2021-07-27  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/101586
        * gimple-fold.c (clear_padding_type): Ignore FIELD_DECLs with byte
        positions above or equal to sz except for diagnostics of flexible
        array members.

2021-07-26  Andrew MacLeod  <amacleod@redhat.com>

        PR tree-optimization/78888
        * gimple-range-fold.cc (get_letter_range): New.
        (fold_using_range::range_of_builtin_call): Call get_letter_range.

2021-07-26  Andrew MacLeod  <amacleod@redhat.com>

        PR tree-optimization/78888
        * gimple-range-fold.cc (fold_using_range::range_of_builtin_call): Add cases
        for CFN_BUILT_IN_TOUPPER and CFN_BUILT_IN_TOLOWER.

2021-07-26  Roger Sayle  <roger@nextmovesoftware.com>
            Marc Glisse  <marc.glisse@inria.fr>

        * match.pd (rotate): Simplify equality/inequality of rotations.
        (bswap): Simplify equality/inequality tests of byte swapping.

2021-07-26  Aldy Hernandez  <aldyh@redhat.com>

        * range-op.cc (operator_bitwise_xor::op1_op2_relation_effect):
        New.

2021-07-26  Aldy Hernandez  <aldyh@redhat.com>

        * range-op.cc (operator_lshift::fold_range): Pass rel to
        base class fold_range.
        (operator_rshift::fold_range): Same.

2021-07-26  Ashimida  <ashimida@linux.alibaba.com>

        PR driver/101447
        * toplev.h (min_align_loops_log): Remove declaration.
        (min_align_jumps_log, min_align_labels_log): Likewise.
        (min_align_functions_log): Likewise.

2021-07-26  Aldy Hernandez  <aldyh@redhat.com>

        * tree-vrp.c (vrp_simplify_cond_using_ranges): Rename vr_values
        with range_query.
        (execute_vrp): Abstract out simplification of conditionals...
        (simplify_casted_conds): ...here.

2021-07-26  Aldy Hernandez  <aldyh@redhat.com>

        * gimple-array-bounds.cc (array_bounds_checker::get_value_range):
        Add gimple argument.
        (array_bounds_checker::check_array_ref): Same.
        (array_bounds_checker::check_addr_expr): Same.
        (array_bounds_checker::check_array_bounds): Pass statement to
        check_array_bounds and check_addr_expr.
        * gimple-array-bounds.h (check_array_bounds): Add gimple argument.
        (check_addr_expr): Same.
        (get_value_range): Same.

2021-07-26  Tamar Christina  <tamar.christina@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (sdot, udot): Rename to..
        (sdot_prod, udot_prod): ... This.
        * config/aarch64/aarch64-simd.md (aarch64_<sur>dot<vsi2qi>): Merged
        into...
        (<sur>dot_prod<vsi2qi>): ... this.
        (aarch64_<sur>dot_lane<vsi2qi>, aarch64_<sur>dot_laneq<vsi2qi>):
        Change operands order.
        (<sur>sadv16qi): Use new operands order.
        * config/aarch64/arm_neon.h (vdot_u32, vdotq_u32, vdot_s32,
        vdotq_s32): Use new RTL ordering.

2021-07-26  Tamar Christina  <tamar.christina@arm.com>

        * config/aarch64/aarch64-builtins.c (TYPES_TERNOP_SUSS,
        aarch64_types_ternop_suss_qualifiers): New.
        * config/aarch64/aarch64-simd-builtins.def (usdot_prod): Use it.
        * config/aarch64/aarch64-simd.md (usdot_prod<vsi2qi>): Re-organize RTL.
        * config/aarch64/arm_neon.h (vusdot_s32, vusdotq_s32): Use it.

2021-07-23  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/101562
        * expmed.c (store_integral_bit_field): Only use movstrict_optab
        if the operand isn't paradoxical.

2021-07-23  Aldy Hernandez  <aldyh@redhat.com>

        * gimple-array-bounds.h (class array_bounds_checker): Change
        ranges type to range_query.

2021-07-23  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/arm_neon.h (vst1_s64_x2): Use
        __builtin_memcpy instead of constructing
        __builtin_aarch64_simd_oi one vector at a time.
        (vst1_u64_x2): Likewise.
        (vst1_f64_x2): Likewise.
        (vst1_s8_x2): Likewise.
        (vst1_p8_x2): Likewise.
        (vst1_s16_x2): Likewise.
        (vst1_p16_x2): Likewise.
        (vst1_s32_x2): Likewise.
        (vst1_u8_x2): Likewise.
        (vst1_u16_x2): Likewise.
        (vst1_u32_x2): Likewise.
        (vst1_f16_x2): Likewise.
        (vst1_f32_x2): Likewise.
        (vst1_p64_x2): Likewise.
        (vst1q_s8_x2): Likewise.
        (vst1q_p8_x2): Likewise.
        (vst1q_s16_x2): Likewise.
        (vst1q_p16_x2): Likewise.
        (vst1q_s32_x2): Likewise.
        (vst1q_s64_x2): Likewise.
        (vst1q_u8_x2): Likewise.
        (vst1q_u16_x2): Likewise.
        (vst1q_u32_x2): Likewise.
        (vst1q_u64_x2): Likewise.
        (vst1q_f16_x2): Likewise.
        (vst1q_f32_x2): Likewise.
        (vst1q_f64_x2): Likewise.
        (vst1q_p64_x2): Likewise.

2021-07-23  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/arm_neon.h (vst1_s64_x3): Use
        __builtin_memcpy instead of constructing
        __builtin_aarch64_simd_ci one vector at a time.
        (vst1_u64_x3): Likewise.
        (vst1_f64_x3): Likewise.
        (vst1_s8_x3): Likewise.
        (vst1_p8_x3): Likewise.
        (vst1_s16_x3): Likewise.
        (vst1_p16_x3): Likewise.
        (vst1_s32_x3): Likewise.
        (vst1_u8_x3): Likewise.
        (vst1_u16_x3): Likewise.
        (vst1_u32_x3): Likewise.
        (vst1_f16_x3): Likewise.
        (vst1_f32_x3): Likewise.
        (vst1_p64_x3): Likewise.
        (vst1q_s8_x3): Likewise.
        (vst1q_p8_x3): Likewise.
        (vst1q_s16_x3): Likewise.
        (vst1q_p16_x3): Likewise.
        (vst1q_s32_x3): Likewise.
        (vst1q_s64_x3): Likewise.
        (vst1q_u8_x3): Likewise.
        (vst1q_u16_x3): Likewise.
        (vst1q_u32_x3): Likewise.
        (vst1q_u64_x3): Likewise.
        (vst1q_f16_x3): Likewise.
        (vst1q_f32_x3): Likewise.
        (vst1q_f64_x3): Likewise.
        (vst1q_p64_x3): Likewise.

2021-07-23  H.J. Lu  <hjl.tools@gmail.com>

        PR target/101504
        * config/i386/i386.c (ix86_gen_scratch_sse_rtx): Don't return
        hard register when LRA is in progress.

2021-07-23  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/arm_neon.h (vst1_s8_x4): Use
        __builtin_memcpy instead of using a union.
        (vst1q_s8_x4): Likewise.
        (vst1_s16_x4): Likewise.
        (vst1q_s16_x4): Likewise.
        (vst1_s32_x4): Likewise.
        (vst1q_s32_x4): Likewise.
        (vst1_u8_x4): Likewise.
        (vst1q_u8_x4): Likewise.
        (vst1_u16_x4): Likewise.
        (vst1q_u16_x4): Likewise.
        (vst1_u32_x4): Likewise.
        (vst1q_u32_x4): Likewise.
        (vst1_f16_x4): Likewise.
        (vst1q_f16_x4): Likewise.
        (vst1_f32_x4): Likewise.
        (vst1q_f32_x4): Likewise.
        (vst1_p8_x4): Likewise.
        (vst1q_p8_x4): Likewise.
        (vst1_p16_x4): Likewise.
        (vst1q_p16_x4): Likewise.
        (vst1_s64_x4): Likewise.
        (vst1_u64_x4): Likewise.
        (vst1_p64_x4): Likewise.
        (vst1q_s64_x4): Likewise.
        (vst1q_u64_x4): Likewise.
        (vst1q_p64_x4): Likewise.
        (vst1_f64_x4): Likewise.
        (vst1q_f64_x4): Likewise.

2021-07-23  Jonathan Wrightt  <jonathan.wright@arm.com>

        * config/aarch64/arm_neon.h (vst2_s64): Use __builtin_memcpy
        instead of constructing __builtin_aarch64_simd_oi one vector
        at a time.
        (vst2_u64): Likewise.
        (vst2_f64): Likewise.
        (vst2_s8): Likewise.
        (vst2_p8): Likewise.
        (vst2_s16): Likewise.
        (vst2_p16): Likewise.
        (vst2_s32): Likewise.
        (vst2_u8): Likewise.
        (vst2_u16): Likewise.
        (vst2_u32): Likewise.
        (vst2_f16): Likewise.
        (vst2_f32): Likewise.
        (vst2_p64): Likewise.
        (vst2q_s8): Likewise.
        (vst2q_p8): Likewise.
        (vst2q_s16): Likewise.
        (vst2q_p16): Likewise.
        (vst2q_s32): Likewise.
        (vst2q_s64): Likewise.
        (vst2q_u8): Likewise.
        (vst2q_u16): Likewise.
        (vst2q_u32): Likewise.
        (vst2q_u64): Likewise.
        (vst2q_f16): Likewise.
        (vst2q_f32): Likewise.
        (vst2q_f64): Likewise.
        (vst2q_p64): Likewise.

2021-07-23  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/arm_neon.h (vst3_s64): Use __builtin_memcpy
        instead of constructing __builtin_aarch64_simd_ci one vector
        at a time.
        (vst3_u64): Likewise.
        (vst3_f64): Likewise.
        (vst3_s8): Likewise.
        (vst3_p8): Likewise.
        (vst3_s16): Likewise.
        (vst3_p16): Likewise.
        (vst3_s32): Likewise.
        (vst3_u8): Likewise.
        (vst3_u16): Likewise.
        (vst3_u32): Likewise.
        (vst3_f16): Likewise.
        (vst3_f32): Likewise.
        (vst3_p64): Likewise.
        (vst3q_s8): Likewise.
        (vst3q_p8): Likewise.
        (vst3q_s16): Likewise.
        (vst3q_p16): Likewise.
        (vst3q_s32): Likewise.
        (vst3q_s64): Likewise.
        (vst3q_u8): Likewise.
        (vst3q_u16): Likewise.
        (vst3q_u32): Likewise.
        (vst3q_u64): Likewise.
        (vst3q_f16): Likewise.
        (vst3q_f32): Likewise.
        (vst3q_f64): Likewise.
        (vst3q_p64): Likewise.

2021-07-23  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/arm_neon.h (vst4_s64): Use __builtin_memcpy
        instead of constructing __builtin_aarch64_simd_xi one vector
        at a time.
        (vst4_u64): Likewise.
        (vst4_f64): Likewise.
        (vst4_s8): Likewise.
        (vst4_p8): Likewise.
        (vst4_s16): Likewise.
        (vst4_p16): Likewise.
        (vst4_s32): Likewise.
        (vst4_u8): Likewise.
        (vst4_u16): Likewise.
        (vst4_u32): Likewise.
        (vst4_f16): Likewise.
        (vst4_f32): Likewise.
        (vst4_p64): Likewise.
        (vst4q_s8): Likewise.
        (vst4q_p8): Likewise.
        (vst4q_s16): Likewise.
        (vst4q_p16): Likewise.
        (vst4q_s32): Likewise.
        (vst4q_s64): Likewise.
        (vst4q_u8): Likewise.
        (vst4q_u16): Likewise.
        (vst4q_u32): Likewise.
        (vst4q_u64): Likewise.
        (vst4q_f16): Likewise.
        (vst4q_f32): Likewise.
        (vst4q_f64): Likewise.
        (vst4q_p64): Likewise.

2021-07-23  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/arm_neon.h (vtbx4_s8): Use __builtin_memcpy
        instead of constructing __builtin_aarch64_simd_oi one vector
        at a time.
        (vtbx4_u8): Likewise.
        (vtbx4_p8): Likewise.

2021-07-23  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/arm_neon.h (vtbl3_s8): Use __builtin_memcpy
        instead of constructing __builtin_aarch64_simd_oi one vector
        at a time.
        (vtbl3_u8): Likewise.
        (vtbl3_p8): Likewise.
        (vtbl4_s8): Likewise.
        (vtbl4_u8): Likewise.
        (vtbl4_p8): Likewise.

2021-07-23  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/arm_neon.h (vqtbx2_s8): Use __builtin_memcpy
        instead of constructing __builtin_aarch64_simd_oi one vector
        at a time.
        (vqtbx2_u8): Likewise.
        (vqtbx2_p8): Likewise.
        (vqtbx2q_s8): Likewise.
        (vqtbx2q_u8): Likewise.
        (vqtbx2q_p8): Likewise.
        (vqtbx3_s8): Use __builtin_memcpy instead of constructing
        __builtin_aarch64_simd_ci one vector at a time.
        (vqtbx3_u8): Likewise.
        (vqtbx3_p8): Likewise.
        (vqtbx3q_s8): Likewise.
        (vqtbx3q_u8): Likewise.
        (vqtbx3q_p8): Likewise.
        (vqtbx4_s8): Use __builtin_memcpy instead of constructing
        __builtin_aarch64_simd_xi one vector at a time.
        (vqtbx4_u8): Likewise.
        (vqtbx4_p8): Likewise.
        (vqtbx4q_s8): Likewise.
        (vqtbx4q_u8): Likewise.
        (vqtbx4q_p8): Likewise.

2021-07-23  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/arm_neon.h (vqtbl2_s8): Use __builtin_memcpy
        instead of constructing __builtin_aarch64_simd_oi one vector
        at a time.
        (vqtbl2_u8): Likewise.
        (vqtbl2_p8): Likewise.
        (vqtbl2q_s8): Likewise.
        (vqtbl2q_u8): Likewise.
        (vqtbl2q_p8): Likewise.
        (vqtbl3_s8): Use __builtin_memcpy instead of constructing
        __builtin_aarch64_simd_ci one vector at a time.
        (vqtbl3_u8): Likewise.
        (vqtbl3_p8): Likewise.
        (vqtbl3q_s8): Likewise.
        (vqtbl3q_u8): Likewise.
        (vqtbl3q_p8): Likewise.
        (vqtbl4_s8): Use __builtin_memcpy instead of constructing
        __builtin_aarch64_simd_xi one vector at a time.
        (vqtbl4_u8): Likewise.
        (vqtbl4_p8): Likewise.
        (vqtbl4q_s8): Likewise.
        (vqtbl4q_u8): Likewise.
        (vqtbl4q_p8): Likewise.

2021-07-23  Haochen Gui  <guihaoc@gcc.gnu.org>

        PR target/100952
        * config/rs6000/rs6000.md (cstore<mode>4): Fix wrong fall through.

2021-07-22  Andrew Pinski  <apinski@marvell.com>

        PR tree-optimization/10153
        * tree-tailcall.c (create_tailcall_accumulator):
        Don't call fold_convert as the type should be correct already.
        (tree_optimize_tail_calls_1): Use build_{one,zero}_cst instead
        of integer_{one,zero}_node for the call of create_tailcall_accumulator.

2021-07-22  Aldy Hernandez  <aldyh@redhat.com>

        * gimple-range-cache.cc (non_null_ref::adjust_range): Replace
        varying_p check for null/non-null check.

2021-07-22  Andrew MacLeod  <amacleod@redhat.com>

        PR tree-optimization/101511
        * value-relation.cc (relation_oracle::query_relation): Check if ssa1
        is in ssa2's equiv set, and don't trap if so.

2021-07-22  Andrew MacLeod  <amacleod@redhat.com>

        PR tree-optimization/101497
        * gimple-range-fold.cc (fold_using_range::range_of_cond_expr): Check
        for undefined.

2021-07-22  Andrew MacLeod  <amacleod@redhat.com>

        PR tree-optimization/101496
        * vr-values.c (simplify_using_ranges::fold_cond): Call range_of_stmt
        first, then vrp_visit_cond_Stmt.

2021-07-22  liuhongt  <hongtao.liu@intel.com>

        * config/i386/i386-expand.c
        (ix86_broadcast_from_integer_constant): Rename to ..
        (ix86_broadcast_from_constant): .. this, and extend it to
        handle float mode.
        (ix86_expand_vector_move): Extend to float mode.
        * config/i386/i386-features.c
        (replace_constant_pool_with_broadcast): Remove.
        (remove_partial_avx_dependency_gate): Ditto.
        (constant_pool_broadcast): Ditto.
        (class pass_constant_pool_broadcast): Ditto.
        (make_pass_constant_pool_broadcast): Ditto.
        (remove_partial_avx_dependency): Adjust gate.
        * config/i386/i386-passes.def: Remove pass_constant_pool_broadcast.
        * config/i386/i386-protos.h
        (make_pass_constant_pool_broadcast): Remove.

2021-07-22  liuhongt  <hongtao.liu@intel.com>

        * config/i386/constraints.md (Wb): New constraint.
        (Ww): Ditto.
        * config/i386/i386.md (*ashlhi3_1): Extend to avx512 mask
        shift.
        (*ashlqi3_1): Ditto.
        (*<insn><mode>3_1): Split to ..
        (*ashr<mode>3_1): this, ...
        (*lshr<mode>3_1): and this, also extend this pattern to avx512
        mask registers.
        (*<insn><mode>3_1): Split to ..
        (*ashr<mode>3_1): this, ...
        (*lshrqi3_1): and this, also extend this pattern to avx512
        mask registers.
        (*lshrhi3_1): And this, also extend this pattern to avx512
        mask registers.
        * config/i386/sse.md (k<code><mode>): New define_split after
        it to convert generic shift pattern to mask shift ones.

2021-07-21  Thomas Schwinge  <thomas@codesourcery.com>
            Joseph Myers  <joseph@codesourcery.com>
            Cesar Philippidis  <cesar@codesourcery.com>

        * tree-core.h (omp_clause_code): Add 'OMP_CLAUSE_NOHOST'.
        * tree.c (omp_clause_num_ops, omp_clause_code_name, walk_tree_1):
        Handle it.
        * tree-pretty-print.c (dump_omp_clause): Likewise.
        * omp-general.c (oacc_verify_routine_clauses): Likewise.
        * gimplify.c (gimplify_scan_omp_clauses)
        (gimplify_adjust_omp_clauses): Likewise.
        * tree-nested.c (convert_nonlocal_omp_clauses)
        (convert_local_omp_clauses): Likewise.
        * omp-low.c (scan_sharing_clauses): Likewise.
        * omp-offload.c (execute_oacc_device_lower): Update.

2021-07-21  Martin Sebor  <msebor@redhat.com>

        * tree-ssa-alias.c (walk_aliased_vdefs_1): Fix typos in a comment.

2021-07-21  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000-gen-builtins.c (write_init_bif_table):
        Implement.

2021-07-21  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000-gen-builtins.c (write_fntype): New
        callback function.
        (write_fntype_init): New stub function.
        (write_init_bif_table): Likewise.
        (write_init_ovld_table): New function.
        (write_init_file): Implement.

2021-07-21  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000-gen-builtins.c
        (write_autogenerated_header): New function.
        (write_decls): Likewise.
        (write_extern_fntype): New callback function.
        (write_header_file): Implement.

2021-07-21  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000-gen-builtins.c (write_defines_file):
        Implement.

2021-07-21  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000-gen-builtins.c (complete_vector_type): New
        function.
        (complete_base_type): Likewise.
        (construct_fntype_id): Likewise.
        (parse_bif_entry): Call contruct_fntype_id.
        (parse_ovld_entry): Likewise.

2021-07-21  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000-gen-builtins.c (ovld_stanza): New struct.
        (MAXOVLDSTANZAS): New macro.
        (ovld_stanzas): New variable.
        (curr_ovld_stanza): Likewise.
        (MAXOVLDS): New macro.
        (ovlddata): New struct.
        (ovlds): New variable.
        (curr_ovld): Likewise.
        (max_ovld_args): Likewise.
        (parse_ovld_entry): New function.
        (parse_ovld_stanza): Likewise.
        (parse_ovld): Implement.

2021-07-21  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000-gen-builtins.c (parse_bif_attrs):
        Implement.

2021-07-21  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000-gen-builtins.c (parse_args): New function.
        (parse_prototype): Implement.

2021-07-21  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000-gen-builtins.c (bif_stanza): New enum.
        (curr_bif_stanza): New variable.
        (stanza_entry): New struct.
        (stanza_map): New initialized variable.
        (enable_string): Likewise.
        (fnkinds): New enum.
        (typelist): New struct.
        (attrinfo): Likewise.
        (MAXRESTROPNDS): New macro.
        (prototype): New struct.
        (MAXBIFS): New macro.
        (bifdata): New struct.
        (bifs): New variable.
        (curr_bif): Likewise.
        (bif_order): Likewise.
        (bif_index): Likewise.
        (fatal): New function.
        (stanza_name_to_stanza): Likewise.
        (parse_bif_attrs): New stub function.
        (parse_prototype): Likewise.
        (parse_bif_entry): New function.
        (parse_bif_stanza): Likewise.
        (parse_bif): Implement.
        (set_bif_order): New function.
        (create_bif_order): Implement.

2021-07-21  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000-gen-builtins.c (rbtree.h): New #include.
        (num_bifs): New variable.
        (num_ovld_stanzas): Likewise.
        (num_ovlds): Likewise.
        (parse_codes): New enum.
        (bif_rbt): New variable.
        (ovld_rbt): Likewise.
        (fntype_rbt): Likewise.
        (bifo_rbt): Likewise.
        (parse_bif): New stub function.
        (create_bif_order): Likewise.
        (parse_ovld): Likewise.
        (write_header_file): Likewise.
        (write_init_file): Likewise.
        (write_defines_file): Likewise.
        (delete_output_files): New function.
        (main): Likewise.

2021-07-21  H.J. Lu  <hjl.tools@gmail.com>

        PR target/101549
        * config/i386/i386-builtin.def: Remove OPTION_MASK_ISA_SSE4_2
        from CRC32 _builtin functions.

2021-07-21  Sebastian Huber  <sebastian.huber@embedded-brains.de>

        * coverage.c (build_gcov_info_var_registration): Mark the object placed
        in the linker set as referenced so that it does not get optimized away.

2021-07-21  Kito Cheng  <kito.cheng@sifive.com>

        Revert:
        2021-07-20  Kito Cheng  <kito.cheng@sifive.com>

        * config.gcc (riscv*-*-*): Detect which python is available.

2021-07-21  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/101535
        * gimplify.c (omp_check_private): Properly skip ORT_TARGET_DATA
        contexts in which decl isn't privatized and for ORT_TARGET return
        false if decl is mapped.

2021-07-21  Richard Sandiford  <richard.sandiford@arm.com>

        * gimple-loop-jam.c: Include tree-ssa-sccvn.h.
        (tree_loop_unroll_and_jam): Run value-numbering on a loop that
        has been successfully unrolled.

2021-07-21  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-ssa-loop-manip.c (determine_exit_conditions): Return a null
        exit condition if no tail loop is needed, and if the original exit
        condition should therefore be kept as-is.
        (tree_transform_and_unroll_loop): Handle that case here too.

2021-07-21  Kewen Lin  <linkw@linux.ibm.com>

        * tree-data-ref.c (free_dependence_relations): Adjust to pass vec
        by reference.
        (free_data_refs): Likewise.
        * tree-data-ref.h (free_dependence_relations): Likewise.
        (free_data_refs): Likewise.
        * tree-predcom.c (struct chain): Use auto_vec instead of vec for
        members.
        (struct component): Likewise.
        (pcom_worker::pcom_worker): Adjust for auto_vec and renaming changes.
        (pcom_worker::~pcom_worker): Likewise.
        (pcom_worker::release_chain): Adjust as auto_vec changes.
        (pcom_worker::loop): Rename to ...
        (pcom_worker::m_loop): ... this.
        (pcom_worker::datarefs): Rename to ...
        (pcom_worker::m_datarefs): ... this.  Use auto_vec instead of vec.
        (pcom_worker::dependences): Rename to ...
        (pcom_worker::m_dependences): ... this.  Use auto_vec instead of vec.
        (pcom_worker::chains): Rename to ...
        (pcom_worker::m_chains): ... this.  Use auto_vec instead of vec.
        (pcom_worker::looparound_phis): Rename to ...
        (pcom_worker::m_looparound_phis): ... this.  Use auto_vec instead of
        vec.
        (pcom_worker::cache): Rename to ...
        (pcom_worker::m_cache): ... this.  Use auto_vec instead of vec.
        (pcom_worker::release_chain): Adjust for auto_vec changes.
        (pcom_worker::release_chains): Adjust for auto_vec and renaming
        changes.
        (release_component): Remove.
        (release_components): Adjust for release_component removal.
        (component_of): Adjust to use vec.
        (merge_comps): Likewise.
        (pcom_worker::aff_combination_dr_offset): Adjust for renaming changes.
        (pcom_worker::determine_offset): Likewise.
        (class comp_ptrs): Remove.
        (pcom_worker::split_data_refs_to_components): Adjust for renaming
        changes, for comp_ptrs removal with auto_vec.
        (pcom_worker::suitable_component_p): Adjust for renaming changes.
        (pcom_worker::filter_suitable_components): Adjust for release_component
        removal.
        (pcom_worker::valid_initializer_p): Adjust for renaming changes.
        (pcom_worker::find_looparound_phi): Likewise.
        (pcom_worker::add_looparound_copies): Likewise.
        (pcom_worker::determine_roots_comp): Likewise.
        (pcom_worker::single_nonlooparound_use): Likewise.
        (pcom_worker::execute_pred_commoning_chain): Likewise.
        (pcom_worker::execute_pred_commoning): Likewise.
        (pcom_worker::try_combine_chains): Likewise.
        (pcom_worker::prepare_initializers_chain): Likewise.
        (pcom_worker::prepare_initializers): Likewise.
        (pcom_worker::prepare_finalizers_chain): Likewise.
        (pcom_worker::prepare_finalizers): Likewise.
        (pcom_worker::tree_predictive_commoning_loop): Likewise.

2021-07-20  Martin Sebor  <msebor@redhat.com>

        PR middle-end/101397
        * builtins.c (gimple_call_return_array): Add argument.  Correct
        offsets for memchr, mempcpy, stpcpy, and stpncpy.
        (compute_objsize_r): Adjust offset computation for argument returning
        built-ins.

2021-07-20  Martin Sebor  <msebor@redhat.com>

        PR middle-end/101300
        * tree-ssa-uninit.c (check_defs): Handle UBSAN built-ins.

2021-07-20  Jeff Law  <jlaw@localhost.localdomain>

        * function.c (assign_parm_setup_block): Use adjust_address instead
        of change_address to preserve MEM_EXPR and friends.

2021-07-20  Martin Sebor  <msebor@redhat.com>

        * cfgloop.h (single_likely_exit): Adjust by-value argument to
        by-const-reference.
        * cfgloopanal.c (single_likely_exit): Same.
        * cgraph.h (struct cgraph_node): Same.
        * cgraphclones.c (cgraph_node::create_virtual_clone): Same.
        * genautomata.c (merge_states): Same.
        * genextract.c (VEC_char_to_string): Same.
        * genmatch.c (dt_node::gen_kids_1): Same.
        (walk_captures): Adjust by-value argument to by-reference.
        * gimple-ssa-store-merging.c (check_no_overlap): Adjust by-value argument
        to by-const-reference.
        * gimple.c (gimple_build_call_vec): Same.
        (gimple_build_call_internal_vec): Same.
        (gimple_build_switch): Same.
        (sort_case_labels): Same.
        (preprocess_case_label_vec_for_gimple): Adjust by-value argument to
        by-reference.
        * gimple.h (gimple_build_call_vec): Adjust by-value argument to
        by-const-reference.
        (gimple_build_call_internal_vec): Same.
        (gimple_build_switch): Same.
        (sort_case_labels): Same.
        (preprocess_case_label_vec_for_gimple): Adjust by-value argument to
        by-reference.
        * haifa-sched.c (calc_priorities): Adjust by-value argument to
        by-const-reference.
        (sched_init_luids): Same.
        (haifa_init_h_i_d): Same.
        * ipa-cp.c (ipa_get_indirect_edge_target_1): Same.
        (adjust_callers_for_value_intersection): Adjust by-value argument to
        by-reference.
        (find_more_scalar_values_for_callers_subset): Adjust by-value argument to
        by-const-reference.
        (find_more_contexts_for_caller_subset): Same.
        (find_aggregate_values_for_callers_subset): Same.
        (copy_useful_known_contexts): Same.
        * ipa-fnsummary.c (remap_edge_summaries): Same.
        (remap_freqcounting_predicate): Same.
        * ipa-inline.c (add_new_edges_to_heap): Adjust by-value argument to
        by-reference.
        * ipa-predicate.c (predicate::remap_after_inlining): Adjust by-value argument
        to by-const-reference.
        * ipa-predicate.h (predicate::remap_after_inlining): Same.
        * ipa-prop.c (ipa_find_agg_cst_for_param): Same.
        * ipa-prop.h (ipa_find_agg_cst_for_param): Same.
        * ira-build.c (ira_loop_tree_body_rev_postorder): Same.
        * read-rtl.c (add_overload_instance): Same.
        * rtl.h (native_decode_rtx): Same.
        (native_decode_vector_rtx): Same.
        * sched-int.h (sched_init_luids): Same.
        (haifa_init_h_i_d): Same.
        * simplify-rtx.c (native_decode_vector_rtx): Same.
        (native_decode_rtx): Same.
        * tree-call-cdce.c (gen_shrink_wrap_conditions): Same.
        (shrink_wrap_one_built_in_call_with_conds): Same.
        (shrink_wrap_conditional_dead_built_in_calls): Same.
        * tree-data-ref.c (create_runtime_alias_checks): Same.
        (compute_all_dependences): Same.
        * tree-data-ref.h (compute_all_dependences): Same.
        (create_runtime_alias_checks): Same.
        (index_in_loop_nest): Same.
        * tree-if-conv.c (mask_exists): Same.
        * tree-loop-distribution.c (class loop_distribution): Same.
        (loop_distribution::create_rdg_vertices): Same.
        (dump_rdg_partitions): Same.
        (debug_rdg_partitions): Same.
        (partition_contains_all_rw): Same.
        (loop_distribution::distribute_loop): Same.
        * tree-parloops.c (oacc_entry_exit_ok_1): Same.
        (oacc_entry_exit_single_gang): Same.
        * tree-ssa-loop-im.c (hoist_memory_references): Same.
        (loop_suitable_for_sm): Same.
        * tree-ssa-loop-niter.c (bound_index): Same.
        * tree-ssa-reassoc.c (update_ops): Same.
        (swap_ops_for_binary_stmt): Same.
        (rewrite_expr_tree): Same.
        (rewrite_expr_tree_parallel): Same.
        * tree-ssa-sccvn.c (ao_ref_init_from_vn_reference): Same.
        * tree-ssa-sccvn.h (ao_ref_init_from_vn_reference): Same.
        * tree-ssa-structalias.c (process_all_all_constraints): Same.
        (make_constraints_to): Same.
        (handle_lhs_call): Same.
        (find_func_aliases_for_builtin_call): Same.
        (sort_fieldstack): Same.
        (check_for_overlaps): Same.
        * tree-vect-loop-manip.c (vect_create_cond_for_align_checks): Same.
        (vect_create_cond_for_unequal_addrs): Same.
        (vect_create_cond_for_lower_bounds): Same.
        (vect_create_cond_for_alias_checks): Same.
        * tree-vect-slp-patterns.c (vect_validate_multiplication): Same.
        * tree-vect-slp.c (vect_analyze_slp_instance): Same.
        (vect_make_slp_decision): Same.
        (vect_slp_bbs): Same.
        (duplicate_and_interleave): Same.
        (vect_transform_slp_perm_load): Same.
        (vect_schedule_slp): Same.
        * tree-vectorizer.h (vect_transform_slp_perm_load): Same.
        (vect_schedule_slp): Same.
        (duplicate_and_interleave): Same.
        * tree.c (build_vector_from_ctor): Same.
        (build_vector): Same.
        (check_vector_cst): Same.
        (check_vector_cst_duplicate): Same.
        (check_vector_cst_fill): Same.
        (check_vector_cst_stepped): Same.
        * tree.h (build_vector_from_ctor): Same.

2021-07-20  Jakub Jelinek  <jakub@redhat.com>

        PR target/101384
        * config/rs6000/rs6000-protos.h (easy_altivec_constant): Change return
        type from bool to int.
        * config/rs6000/rs6000.c (vspltis_constant): Fix up handling the
        EASY_VECTOR_MSB case if either step or copies is not 1.
        (vspltis_shifted): Fix comment typo.
        (easy_altivec_constant): Change return type from bool to int, instead
        of returning true return byte size of the element mode that should be
        used to synthetize the constant.
        * config/rs6000/predicates.md (easy_vector_constant_msb): Require
        that vspltis_shifted is 0, handle the case where easy_altivec_constant
        assumes using different vector mode from CONST_VECTOR's mode.
        * config/rs6000/altivec.md (easy_vector_constant_msb splitter): Use
        easy_altivec_constant to determine mode in which -1 >> -1 should be
        performed, use rs6000_expand_vector_init instead of gen_vec_initv4sisi.

2021-07-20  Richard Biener  <rguenther@suse.de>

        PR debug/101473
        * dwarf2out.h (dwarf_file_data): Add key member.
        * dwarf2out.c (dwarf_file_hasher::equal): Compare key.
        (dwarf_file_hasher::hash): Hash key.
        (lookup_filename): Remap the filename and store it in the
        filename member of dwarf_file_data when creating a new
        dwarf_file_data.
        (file_name_acquire): Do not remap the filename again.
        (maybe_emit_file): Likewise.

2021-07-20  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Use two variant
        generators for all TBL/TBX intrinsics and rename to
        consistent forms: qtbl[1234] or qtbx[1234].
        * config/aarch64/aarch64-simd.md (aarch64_tbl1<mode>):
        Rename to...
        (aarch64_qtbl1<mode>): This.
        (aarch64_tbx1<mode>): Rename to...
        (aarch64_qtbx1<mode>): This.
        (aarch64_tbl2v16qi): Delete.
        (aarch64_tbl3<mode>): Rename to...
        (aarch64_qtbl2<mode>): This.
        (aarch64_tbx4<mode>): Rename to...
        (aarch64_qtbx2<mode>): This.
        * config/aarch64/aarch64.c (aarch64_expand_vec_perm_1): Use
        renamed qtbl1 and qtbl2 RTL patterns.
        * config/aarch64/arm_neon.h (vqtbl1_p8): Use renamed qtbl1
        RTL pattern.
        (vqtbl1_s8): Likewise.
        (vqtbl1_u8): Likewise.
        (vqtbl1q_p8): Likewise.
        (vqtbl1q_s8): Likewise.
        (vqtbl1q_u8): Likewise.
        (vqtbx1_s8): Use renamed qtbx1 RTL pattern.
        (vqtbx1_u8): Likewise.
        (vqtbx1_p8): Likewise.
        (vqtbx1q_s8): Likewise.
        (vqtbx1q_u8): Likewise.
        (vqtbx1q_p8): Likewise.
        (vtbl1_s8): Use renamed qtbl1 RTL pattern.
        (vtbl1_u8): Likewise.
        (vtbl1_p8): Likewise.
        (vtbl2_s8): Likewise
        (vtbl2_u8): Likewise.
        (vtbl2_p8): Likewise.
        (vtbl3_s8): Use renamed qtbl2 RTL pattern.
        (vtbl3_u8): Likewise.
        (vtbl3_p8): Likewise.
        (vtbl4_s8): Likewise.
        (vtbl4_u8): Likewise.
        (vtbl4_p8): Likewise.
        (vtbx2_s8): Use renamed qtbx2 RTL pattern.
        (vtbx2_u8): Likewise.
        (vtbx2_p8): Likewise.
        (vqtbl2_s8): Use renamed qtbl2 RTL pattern.
        (vqtbl2_u8): Likewise.
        (vqtbl2_p8): Likewise.
        (vqtbl2q_s8): Likewise.
        (vqtbl2q_u8): Likewise.
        (vqtbl2q_p8): Likewise.
        (vqtbx2_s8): Use renamed qtbx2 RTL pattern.
        (vqtbx2_u8): Likewise.
        (vqtbx2_p8): Likewise.
        (vqtbx2q_s8): Likewise.
        (vqtbx2q_u8): Likewise.
        (vqtbx2q_p8): Likewise.
        (vtbx4_s8): Likewise.
        (vtbx4_u8): Likewise.
        (vtbx4_p8): Likewise.

2021-07-20  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/100182
        * config/i386/sync.md (define_peephole2 atomic_storedi_fpu):
        Remove.
        (define_peephole2 atomic_loaddi_fpu): Ditto.

2021-07-20  Kito Cheng  <kito.cheng@sifive.com>

        * config.gcc (riscv*-*-*): Detect which python is available.

2021-07-20  Kewen Lin  <linkw@linux.ibm.com>

        * config/rs6000/vsx.md (mulhs_<mode>): Rename to...
        (smul<mode>3_highpart): ... this.
        (mulhu_<mode>): Rename to...
        (umul<mode>3_highpart): ... this.
        * config/rs6000/rs6000-builtin.def (MULHS_V2DI, MULHS_V4SI,
        MULHU_V2DI, MULHU_V4SI): Adjust.

2021-07-20  Kewen Lin  <linkw@linux.ibm.com>

        PR tree-optimization/100696
        * internal-fn.c (first_commutative_argument): Add info for IFN_MULH.
        * internal-fn.def (IFN_MULH): New internal function.
        * tree-vect-patterns.c (vect_recog_mulhs_pattern): Add support to
        recog normal multiply highpart as IFN_MULH.
        * config/i386/i386.c (ix86_add_stmt_cost): Adjust for combined
        function CFN_MULH.

2021-07-19  Indu Bhagat  <indu.bhagat@oracle.com>

        * config/elfos.h (CTF_DEBUGGING_INFO): New definition.
        (BTF_DEBUGGING_INFO): Likewise.
        * doc/tm.texi.in: Document the new macros.
        * doc/tm.texi: Regenerated.
        * toplev.c: Guard initialization of debug hooks.

2021-07-19  Indu Bhagat  <indu.bhagat@oracle.com>

        * flags.h (ctf_debuginfo_p): New function declaration.
        * opts.c (ctf_debuginfo_p): New function definition.

2021-07-19  Andrew Stubbs  <ams@codesourcery.com>

        PR target/100208
        * config/gcn/gcn-hsa.h (DRIVER_SELF_SPECS): New.
        (ASM_SPEC): Set -mattr for xnack and sram-ecc.
        * config/gcn/gcn-opts.h (enum sram_ecc_type): New.
        * config/gcn/gcn-valu.md: Add a warning comment.
        * config/gcn/gcn.c (gcn_option_override): Add "sorry" for -mxnack.
        (output_file_start): Add xnack and sram-ecc state to ".amdgcn_target".
        * config/gcn/gcn.md: Add a warning comment.
        * config/gcn/gcn.opt: Add -mxnack and -msram-ecc.
        * config/gcn/mkoffload.c (EF_AMDGPU_MACH_AMDGCN_GFX908): Remove
        SRAM-ECC flag.
        (EF_AMDGPU_XNACK): New.
        (EF_AMDGPU_SRAM_ECC): New.
        (elf_flags): New.
        (copy_early_debug_info): Use elf_flags.
        (main): Handle -mxnack and -msram-ecc options.
        * doc/invoke.texi: Document -mxnack and -msram-ecc.

2021-07-19  Andrew Pinski  <apinski@marvell.com>

        PR target/101205
        * config/aarch64/aarch64.md (csneg3_uxtw_insn): Rename to ...
        (*cs<neg_not_cs>3_uxtw_insn4): and extend to NEG_NOT.

2021-07-19  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101505
        * tree-vect-patterns.c (vect_determine_precisions): Walk
        PHIs also for loop vectorization.

2021-07-19  Richard Biener  <rguenther@suse.de>

        * gimple.h (gimple_expr_type): Remove.
        * doc/gimple.texi: Remove gimple_expr_type documentation.

2021-07-19  Richard Biener  <rguenther@suse.de>

        * tree-ssa-sccvn.c (vn_reference_eq): Handle NULL vr->type.
        (ao_ref_init_from_vn_reference): Likewise.
        (fully_constant_reference): Likewise.
        (vn_reference_lookup_call): Do not set vr->type to random
        values.
        * tree-ssa-pre.c (compute_avail): Do not try to PRE calls
        without a value.
        * tree-vect-generic.c (expand_vector_piecewise): Pass in
        whether we expanded parallel.
        (expand_vector_parallel): Adjust.
        (expand_vector_addition): Likewise.
        (expand_vector_comparison): Likewise.
        (expand_vector_operation): Likewise.
        (expand_vector_scalar_condition): Likewise.
        (expand_vector_conversion): Likewise.

2021-07-19  Richard Biener  <rguenther@suse.de>

        * tree-vrp.c (register_edge_assert_for_2): Use the
        type from the LHS.
        (vrp_folder::fold_predicate_in): Likewise.
        * vr-values.c (gimple_assign_nonzero_p): Likewise.
        (vr_values::extract_range_from_comparison): Likewise.
        (vr_values::extract_range_from_ubsan_builtin): Use the
        type of the first operand.
        (vr_values::extract_range_basic): Push down type
        computation, use the appropriate LHS.
        (vr_values::extract_range_from_assignment): Use the
        type of the LHS.

2021-07-18  H.J. Lu  <hjl.tools@gmail.com>

        PR target/101492
        * common/config/i386/i386-common.c (ix86_handle_option): For
        -mgeneral-regs-only, enable the GPR only instructions which are
        enabled implicitly by SSE ISAs unless they have been disabled
        explicitly.

2021-07-18  H.J. Lu  <hjl.tools@gmail.com>

        PR target/101495
        * config/i386/i386.c (ix86_check_avx_upper_stores): Moved before
        ix86_avx_u128_mode_needed.
        (ix86_avx_u128_mode_needed): Return AVX_U128_DIRTY if callee
        returns AVX register.

2021-07-17  Jan Hubicka  <hubicka@ucw.cz>

        * tree-ssa-structalias.c (handle_rhs_call): Support EAF_NOT_RETURNED.
        (handle_const_call): Liekise
        (handle_pure_call): Liekise

2021-07-17  Andrew MacLeod  <amacleod@redhat.com>

        PR tree-optimization/96542
        * range-op.cc (range_operator::wi_fold_in_parts): New.
        (range_operator::fold_range): Call wi_fold_in_parts.
        (operator_lshift::wi_fold): Fix broken lshift by [0,0].
        * range-op.h (wi_fold_in_parts): Add prototype.

2021-07-16  David Malcolm  <dmalcolm@redhat.com>

        * doc/analyzer.texi: Add __analyzer_dump_state.

2021-07-16  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rbtree.c: New file.
        * config/rs6000/rbtree.h: New file.

2021-07-16  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000-gen-builtins.c (restriction): New enum.
        (typeinfo): Add restr field.
        (match_bracketed_pair): New function.
        (match_const_restriction): Implement.

2021-07-16  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000-gen-builtins.c (match_basetype): Implement.

2021-07-16  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000-gen-builtins.c (void_status): New enum.
        (basetype): Likewise.
        (typeinfo): Likewise.
        (handle_pointer): New function.
        (match_basetype): New stub function.
        (match_const_restriction): Likewise.
        (match_type): New function.

2021-07-16  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000-gen-builtins.c (consume_whitespace): New
        function.
        (advance_line): Likewise.
        (safe_inc_pos): Likewise.
        (match_identifier): Likewise.
        (match_integer): Likewise.
        (match_to_right_bracket): Likewise.

2021-07-16  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000-gen-builtins.c (bif_file): New variable.
        (ovld_file): Likewise.
        (header_file): Likewise.
        (init_file): Likewise.
        (defines_file): Likewise.
        (pgm_path): Likewise.
        (bif_path): Likewise.
        (ovld_path): Likewise.
        (header_path): Likewise.
        (init_path): Likewise.
        (defines_path): Likewise.
        (LINELEN): New macro.
        (linebuf): New variable.
        (line): Likewise.
        (pos): Likewise.
        (diag): Likewise.
        (bif_diag): New function.
        (ovld_diag): Likewise.

2021-07-16  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000-builtin-new.def: New.
        * config/rs6000/rs6000-overload.def: New.

2021-07-16  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000-gen-builtins.c: New.

2021-07-16  Bill Schmidt  <wschmidt@linux.ibm.com>

        * Makefile.in (EXTRA_GTYPE_DEPS): New variable.
        (s-gtype): Depend on EXTRA_GTYPE_DEPS.
        * gengtype-state.c (state_writer::write_state_file_list): Add a
        parameter to the fileslist expression for the number of build
        headers to scan.
        (read_state_files_list): Detect build headers and strip the
        initial "./" or ".\" from their names.
        * gengtype.c (build_headers): New global variable.
        (num_build_headers): Likewise.
        (open_base_files): Emit #include for each build header.
        (main): Detect and count build headers.
        * gengtype.h (build_headers): New extern variable.
        (num_build_headers): Likewise.

2021-07-16  Richard Biener   <rguenther@suse.de>

        * gimple-ssa-store-merging.c (verify_symbolic_number_p): Use
        the type of the LHS.
        (find_bswap_or_nop_1): Likewise.
        (find_bswap_or_nop): Likewise.
        * tree-vectorizer.h (vect_get_smallest_scalar_type): Adjust
        prototype.
        * tree-vect-data-refs.c (vect_get_smallest_scalar_type):
        Remove unused parameters, pass in the scalar type.  Fix
        internal store function handling.
        * tree-vect-stmts.c (vect_analyze_stmt): Remove assert.
        (vect_get_vector_types_for_stmt): Move down check for
        existing vector stmt after we've determined a scalar type.
        Pass down the used scalar type to vect_get_smallest_scalar_type.
        * tree-vect-generic.c (expand_vector_condition): Use
        the type of the LHS.
        (expand_vector_scalar_condition): Likewise.
        (expand_vector_operations_1): Likewise.
        * tree-vect-patterns.c (vect_widened_op_tree): Likewise.
        (vect_recog_dot_prod_pattern): Likewise.
        (vect_recog_sad_pattern): Likewise.
        (vect_recog_widen_op_pattern): Likewise.
        (vect_recog_widen_sum_pattern): Likewise.
        (vect_recog_mixed_size_cond_pattern): Likewise.

2021-07-16  Jan Hubicka  <hubicka@ucw.cz>

        * ipa-modref.c (struct escape_entry): Use eaf_fleags_t.
        (dump_eaf_flags): Dump EAF_NOT_RETURNED
        (eaf_flags_useful_p): Use eaf_fleags_t; handle const functions
        and EAF_NOT_RETURNED.
        (modref_summary::useful_p): Likewise.
        (modref_summary_lto::useful_p): Likewise.
        (struct) modref_summary_lto: Use eaf_fleags_t.
        (deref_flags): Handle EAF_NOT_RETURNED.
        (struct escape_point): Use min_flags.
        (modref_lattice::init): Add EAF_NOT_RETURNED.
        (merge_call_lhs_flags): Ignore EAF_NOT_RETURNED functions
        (analyze_ssa_name_flags): Clear EAF_NOT_RETURNED on return;
        handle call flags.
        (analyze_parms): Also analyze const functions; update conition on
        flags usefulness.
        (modref_write): Update streaming.
        (read_section): Update streaming.
        (remap_arg_flags): Use eaf_flags_t.
        (modref_merge_call_site_flags): Hanlde EAF_NOT_RETURNED.
        * ipa-modref.h: (eaf_flags_t): New typedef.
        (struct modref_summary): Use eaf_flags_t.
        * tree-core.h (EAF_NOT_RETURNED): New constant.

2021-07-16  Richard Biener  <rguenther@suse.de>

        * gimple-fold.c (gimple_fold_stmt_to_constant_1): Use
        the type of the LHS.
        (gimple_assign_nonnegative_warnv_p): Likewise.
        (gimple_call_nonnegative_warnv_p): Likewise.  Return false
        if the call has no LHS.
        * gimple.c (gimple_could_trap_p_1): Use the type of the LHS.
        * tree-eh.c (stmt_could_throw_1_p): Likewise.
        * tree-inline.c (insert_init_stmt): Likewise.
        * tree-ssa-loop-niter.c (get_val_for): Likewise.
        * tree-outof-ssa.c (ssa_is_replaceable_p): Use the type of
        the def.
        * tree-ssa-sccvn.c (init_vn_nary_op_from_stmt): Take a
        gassign *.  Use the type of the lhs.
        (vn_nary_op_lookup_stmt): Adjust.
        (vn_nary_op_insert_stmt): Likewise.

2021-07-16  Ilya Leoshkevich  <iii@linux.ibm.com>

        * config/s390/predicates.md (bras_sym_operand): Accept all
        functions in 64-bit mode, use UNSPEC_PLT31.
        (larl_operand): Use UNSPEC_PLT31.
        * config/s390/s390.c (s390_loadrelative_operand_p): Likewise.
        (legitimize_pic_address): Likewise.
        (s390_emit_tls_call_insn): Mark __tls_get_offset as function,
        use UNSPEC_PLT31.
        (s390_delegitimize_address): Use UNSPEC_PLT31.
        (s390_output_addr_const_extra): Likewise.
        (print_operand): Add @PLT to TLS calls, handle %K.
        (s390_function_profiler): Mark __fentry__/_mcount as function,
        use %K, use UNSPEC_PLT31.
        (s390_output_mi_thunk): Use only UNSPEC_GOT, use %K.
        (s390_emit_call): Use UNSPEC_PLT31.
        (s390_emit_tpf_eh_return): Mark __tpf_eh_return as function.
        * config/s390/s390.md (UNSPEC_PLT31): Rename from UNSPEC_PLT.
        (*movdi_64): Use %K.
        (reload_base_64): Likewise.
        (*sibcall_brc): Likewise.
        (*sibcall_brcl): Likewise.
        (*sibcall_value_brc): Likewise.
        (*sibcall_value_brcl): Likewise.
        (*bras): Likewise.
        (*brasl): Likewise.
        (*bras_r): Likewise.
        (*brasl_r): Likewise.
        (*bras_tls): Likewise.
        (*brasl_tls): Likewise.
        (main_base_64): Likewise.
        (reload_base_64): Likewise.
        (@split_stack_call<mode>): Likewise.

2021-07-16  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101467
        * tree-vect-stmts.c (vect_gen_while): Properly guard
        make_temp_ssa_name usage.

2021-07-16  Cooper Qu  <cooper.qu@linux.alibaba.com>

        * config.gcc: Don't use forked print-sysroot-suffix.sh and
        t-sysroot-suffix for C-SKY.
        * config/csky/print-sysroot-suffix.sh: Delete.
        * config/csky/t-csky-linux: Delete.
        * config/csky/t-sysroot-suffix: Define MULTILIB_DIRNAMES
        instead of CSKY_MULTILIB_DIRNAMES.

2021-07-16  Richard Biener  <rguenther@suse.de>

        * tree-vect-loop.c (vect_transform_cycle_phi): Correct sign
        conversion issues with the partial reduction of the reused
        vector accumulator.

2021-07-16  Richard Biener  <rguenther@suse.de>

        * config/i386/i386-options.c (ix86_option_override_internal): Set
        param_vect_partial_vector_usage to zero if not set.

2021-07-15  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/101346
        * config/i386/i386.h (VALID_SSE_REG_MODE): Add TDmode.
        (VALID_INT_MODE_P): Add SDmode and DDmode.
        Add TDmode for TARGET_64BIT.
        (VALID_DFP_MODE_P): Remove.
        * config/i386/i386.c (ix86_hard_regno_mode_ok):
        Do not use VALID_DFP_MODE_P.

2021-07-15  Andrew MacLeod  <amacleod@redhat.com>

        * gimple-range-fold.cc (adjust_pointer_diff_expr): Use
        gimple_range_type.
        (fold_using_range::fold_stmt): Ditto.
        (fold_using_range::range_of_range_op): Ditto.
        (fold_using_range::range_of_phi): Ditto.
        (fold_using_range::range_of_call): Ditto.
        (fold_using_range::range_of_builtin_ubsan_call): Ditto.
        (fold_using_range::range_of_builtin_call): Ditto.
        (fold_using_range::range_of_cond_expr): Ditto.
        * gimple-range-fold.h (gimple_range_type): New.

2021-07-15  Martin Sebor  <msebor@redhat.com>

        PR middle-end/97027
        * tree-ssa-strlen.c (handle_assign): New function.
        (maybe_warn_overflow): Add argument.
        (nonzero_bytes_for_type): New function.
        (count_nonzero_bytes): Handle more tree types.  Call
        nonzero_bytes_for_tye.
        (count_nonzero_bytes): Handle types.
        (handle_store): Handle stores from function calls.
        (strlen_check_and_optimize_call): Move code to handle_assign.  Call
        it for assignments from function calls.

2021-07-15  David Malcolm  <dmalcolm@redhat.com>

        PR analyzer/95006
        PR analyzer/94713
        PR analyzer/94714
        * doc/invoke.texi: Add -Wanalyzer-use-of-uninitialized-value.

2021-07-15  David Malcolm  <dmalcolm@redhat.com>

        * doc/invoke.texi (-fdump-analyzer-exploded-paths): New.

2021-07-15  Martin Sebor  <msebor@redhat.com>

        PR c/101289
        PR c/97548
        * fold-const.c (operand_compare::operand_equal_p): Handle OEP_DECL_NAME.
        (operand_compare::verify_hash_value): Same.
        * tree-core.h (OEP_DECL_NAME): New.

2021-07-15  Martin Jambor  <mjambor@suse.cz>

        * profile-count.h (profile_count::value): Change the return type to
        uint64_t.
        * gimple-pretty-print.c (dump_gimple_bb_header): Adjust print
        statement.
        * tree-cfg.c (dump_function_to_file): Likewise.

2021-07-15  Bill Schmidt  <wschmidt@linux.ibm.com>

        PR target/101129
        * config/rs6000/rs6000-p8swap.c (has_part_mult): New.
        (rs6000_analyze_swaps): Insns containing a subreg of a mult are
        not swappable.

2021-07-15  Richard Biener  <rguenther@suse.de>

        * tree-vectorizer.h (vect_gen_while): Match up with
        vect_gen_while_not.
        * tree-vect-stmts.c (vect_gen_while): Adjust API to that
        of vect_gen_while_not.
        (vect_gen_while_not): Adjust.
        * tree-vect-loop-manip.c (vect_set_loop_controls_directly): Likewise.

2021-07-15  Aldy Hernandez  <aldyh@redhat.com>

        * gimple-range-cache.cc (non_null_ref::adjust_range): New.
        (ranger_cache::range_of_def): Call adjust_range.
        (ranger_cache::entry_range): Same.
        * gimple-range-cache.h (non_null_ref::adjust_range): New.
        * gimple-range.cc (gimple_ranger::range_of_expr): Call
        adjust_range.
        (gimple_ranger::range_on_entry): Same.

2021-07-15  Tamar Christina  <tamar.christina@arm.com>

        Revert:
        2021-07-14  Tamar Christina  <tamar.christina@arm.com>

        * config/arm/neon.md (<sup>dot_prod<vsi2qi>): Drop statements.

2021-07-15  Tamar Christina  <tamar.christina@arm.com>

        Revert:
        2021-07-14  Tamar Christina  <tamar.christina@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (udot, sdot): Rename to...
        (sdot_prod, udot_prod): ...These.
        * config/aarch64/aarch64-simd.md (<sur>dot_prod<vsi2qi>): Remove.
        (aarch64_<sur>dot<vsi2qi>): Rename to...
        (<sur>dot_prod<vsi2qi>): ...This.
        * config/aarch64/arm_neon.h (vdot_u32, vdotq_u32, vdot_s32, vdotq_s32):
        Update builtins.

2021-07-15  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/101437
        * gimplify.c (gimplify_expr): Throw away volatile reads from empty
        types even if they have non-BLKmode TYPE_MODE.

2021-07-15  Richard Biener  <rguenther@suse.de>

        PR driver/101383
        * gcc.c (process_command): Process -gtoggle like process_options
        would after parsing options.

2021-07-15  Trevor Saunders  <tbsaunde@tbsaunde.org>

        * cfgexpand.c (expand_asm_loc): Adjust.
        (expand_asm_stmt): Likewise.
        * config/arm/aarch-common-protos.h (arm_md_asm_adjust): Likewise.
        * config/arm/aarch-common.c (arm_md_asm_adjust): Likewise.
        * config/arm/arm.c (thumb1_md_asm_adjust): Likewise.
        * config/avr/avr.c (avr_md_asm_adjust): Likewise.
        * config/cris/cris.c (cris_md_asm_adjust): Likewise.
        * config/i386/i386.c (ix86_md_asm_adjust): Likewise.
        * config/mn10300/mn10300.c (mn10300_md_asm_adjust): Likewise.
        * config/nds32/nds32.c (nds32_md_asm_adjust): Likewise.
        * config/pdp11/pdp11.c (pdp11_md_asm_adjust): Likewise.
        * config/rs6000/rs6000.c (rs6000_md_asm_adjust): Likewise.
        * config/s390/s390.c (s390_md_asm_adjust): Likewise.
        * config/vax/vax.c (vax_md_asm_adjust): Likewise.
        * config/visium/visium.c (visium_md_asm_adjust): Likewise.
        * doc/tm.texi: Regenerate.
        * target.def: Add location argument to md_asm_adjust.

2021-07-15  Trevor Saunders  <tbsaunde@tbsaunde.org>

        * tree-diagnostic.c (diagnostic_report_current_function): Use the
        diagnostic's location, not input_location.

2021-07-15  Trevor Saunders  <tbsaunde@tbsaunde.org>

        * cfgexpand.c (tree_conflicts_with_clobbers_p): Pass location to
        diagnostics.
        (expand_asm_stmt): Likewise.

2021-07-14  Peter Bergner  <bergner@linux.ibm.com>

        * config/rs6000/rs6000.c (adjacent_mem_locations): Return the lower
        addressed memory rtx, if any.
        (rs6000_split_multireg_move): Fix code formatting.
        Handle MMA build built-ins with operands in adjacent memory locations.

2021-07-14  Peter Bergner  <bergner@linux.ibm.com>

        * config/rs6000/rs6000.c (rs6000_split_multireg_move): Move to later
        in the file.

2021-07-14  Jason Merrill  <jason@redhat.com>

        * sel-sched-ir.h (get_all_loop_exits): Use auto_vec.

2021-07-14  Jason Merrill  <jason@redhat.com>

        * doc/invoke.texi: -fdelete-dead-exceptions is on by default for
        C++.

2021-07-14  Tamar Christina  <tamar.christina@arm.com>

        * tree-vect-patterns.c (vect_recog_dot_prod_pattern):
        Remove erroneous line.

2021-07-14  Andrew MacLeod  <amacleod@redhat.com>

        * params.opt (param_evrp_mode): Change default.

2021-07-14  Tamar Christina  <tamar.christina@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (udot, sdot): Rename to...
        (sdot_prod, udot_prod): ...These.
        * config/aarch64/aarch64-simd.md (<sur>dot_prod<vsi2qi>): Remove.
        (aarch64_<sur>dot<vsi2qi>): Rename to...
        (<sur>dot_prod<vsi2qi>): ...This.
        * config/aarch64/arm_neon.h (vdot_u32, vdotq_u32, vdot_s32, vdotq_s32):
        Update builtins.

2021-07-14  Tamar Christina  <tamar.christina@arm.com>

        * config/arm/neon.md (<sup>dot_prod<vsi2qi>): Drop statements.

2021-07-14  Tamar Christina  <tamar.christina@arm.com>

        * doc/sourcebuild.texi (arm_v8_2a_i8mm_neon_hw): Document.

2021-07-14  Tamar Christina  <tamar.christina@arm.com>

        * config/arm/neon.md (usdot_prod<vsi2qi>): New.

2021-07-14  Tamar Christina  <tamar.christina@arm.com>

        * config/aarch64/aarch64-simd.md (aarch64_usdot<vsi2qi>): Rename to...
        (usdot_prod<vsi2qi>): ... This.
        * config/aarch64/aarch64-simd-builtins.def (usdot): Rename to...
        (usdot_prod): ...This.
        * config/aarch64/arm_neon.h (vusdot_s32, vusdotq_s32): Likewise.
        * config/aarch64/aarch64-sve.md (@aarch64_<sur>dot_prod<vsi2qi>):
        Rename to...
        (@<sur>dot_prod<vsi2qi>): ...This.
        * config/aarch64/aarch64-sve-builtins-base.cc
        (svusdot_impl::expand): Use it.

2021-07-14  Tamar Christina  <tamar.christina@arm.com>

        * optabs.def (usdot_prod_optab): New.
        * doc/md.texi: Document it and clarify other dot prod optabs.
        * optabs-tree.h (enum optab_subtype): Add optab_vector_mixed_sign.
        * optabs-tree.c (optab_for_tree_code): Support usdot_prod_optab.
        * optabs.c (expand_widen_pattern_expr): Likewise.
        * tree-cfg.c (verify_gimple_assign_ternary): Likewise.
        * tree-vect-loop.c (vectorizable_reduction): Query dot-product kind.
        * tree-vect-patterns.c (vect_supportable_direct_optab_p): Take optional
        optab subtype.
        (vect_widened_op_tree): Optionally ignore
        mismatch types.
        (vect_recog_dot_prod_pattern): Support usdot_prod_optab.

2021-07-14  H.J. Lu  <hjl.tools@gmail.com>

        PR target/101395
        * config/i386/driver-i386.c (host_detect_local_cpu): Check
        "arch [32|64]" and "tune [32|64]" for 32-bit and 64-bit codegen.
        Enable UINTR only for 64-bit codegen.
        * config/i386/i386-options.c
        (ix86_option_override_internal::DEF_PTA): Skip PTA_UINTR if not
        in 64-bit mode.
        * config/i386/i386.h (ARCH_ARG): New.
        (CC1_CPU_SPEC): Pass "[arch|tune] 32" for 32-bit codegen and
        "[arch|tune] 64" for 64-bit codegen.

2021-07-14  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101445
        * tree-vect-stmts.c (vectorizable_load): Do the gap adjustment
        of the IV in the correct direction for negative stride
        accesses.

2021-07-14  Jakub Jelinek  <jakub@redhat.com>

        PR go/101407
        * godump.c (godump_str_hash): New type.
        (godump_container::pot_dummy_types): Use string_hash instead of
        ptr_hash in the hash_set.

2021-07-14  Richard Biener  <rguenther@suse.de>

        * tree-vect-loop.c (vect_find_reusable_accumulator): Handle
        vector types where the old vector type has a multiple of
        the new vector type elements.
        (vect_create_partial_epilog): New function, split out from...
        (vect_create_epilog_for_reduction): ... here.
        (vect_transform_cycle_phi): Reduce the re-used accumulator
        to the new vector type.

2021-07-14  Alexandre Oliva  <oliva@adacore.com>

        * tree-ssa-alias.c (attr_fnspec::verify): Fix index in
        non-'t'-sized arg check.

2021-07-14  Alexandre Oliva  <oliva@adacore.com>

        * tree-cfg.c (cleanup_dead_labels_eh): Update
        post_landing_pad label upon change of landing pad block's
        primary label.
        (cleanup_dead_labels): Check that a removed label is not that
        of a landing pad.

2021-07-13  Jonathan Wright  <jonathan.wright@arm.com>

        * combine.c (combine_simplify_rtx): Add vec_select -> subreg
        simplification.
        * config/aarch64/aarch64.md (*zero_extend<SHORT:mode><GPI:mode>2_aarch64):
        Add Neon to general purpose register case for zero-extend
        pattern.
        * config/arm/vfp.md (*arm_movsi_vfp): Remove "*" from *t -> r
        case to prevent some cases opting to go through memory.
        * cse.c (fold_rtx): Add vec_select -> subreg simplification.
        * rtl.c (rtvec_series_p): Define predicate to determine
        whether a vector contains a linear series of integers.
        * rtl.h (rtvec_series_p): Define.
        * rtlanal.c (vec_series_lowpart_p): Define predicate to
        determine if a vector selection is equivalent to the low part
        of the vector.
        * rtlanal.h (vec_series_lowpart_p): Define.
        * simplify-rtx.c (simplify_context::simplify_binary_operation_1):
        Add vec_select -> subreg simplification.

2021-07-13  Paul A. Clarke  <pc@us.ibm.com>

        * config/rs6000/smmintrin.h (_mm_testz_si128, _mm_testc_si128,
        _mm_testnzc_si128, _mm_test_all_ones, _mm_test_all_zeros,
        _mm_test_mix_ones_zeros): New.

2021-07-13  Roger Sayle  <roger@nextmovesoftware.com>
            Richard Biener  <rguenther@suse.de>

        * gimple.c (gimple_could_trap_p_1):  Make S argument a
        "const gimple*".  Preserve constness in call to
        gimple_asm_volatile_p.
        (gimple_could_trap_p): Make S argument a "const gimple*".
        * gimple.h (gimple_could_trap_p_1, gimple_could_trap_p):
        Update function prototypes.

2021-07-13  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (vect_reusable_accumulator): New structure.
        (_loop_vec_info::main_loop_edge): New field.
        (_loop_vec_info::skip_main_loop_edge): Likewise.
        (_loop_vec_info::skip_this_loop_edge): Likewise.
        (_loop_vec_info::reusable_accumulators): Likewise.
        (_stmt_vec_info::reduc_scalar_results): Likewise.
        (_stmt_vec_info::reused_accumulator): Likewise.
        (vect_get_main_loop_result): Declare.
        * tree-vectorizer.c (vec_info::new_stmt_vec_info): Initialize
        reduc_scalar_inputs.
        (vec_info::free_stmt_vec_info): Free reduc_scalar_inputs.
        * tree-vect-loop-manip.c (vect_get_main_loop_result): New function.
        (vect_do_peeling): Fill an epilogue loop's main_loop_edge,
        skip_main_loop_edge and skip_this_loop_edge fields.
        * tree-vect-loop.c (INCLUDE_ALGORITHM): Define.
        (vect_emit_reduction_init_stmts): New function.
        (get_initial_def_for_reduction): Use it.
        (get_initial_defs_for_reduction): Likewise.  Change the vinfo
        parameter to a loop_vec_info.
        (vect_create_epilog_for_reduction): Store the scalar results
        in the reduc_info.  If an epilogue loop is reusing an accumulator
        from the main loop, and if the epilogue loop can also be skipped,
        try to place the reduction code in the join block.  Record
        accumulators that could potentially be reused by epilogue loops.
        (vect_transform_cycle_phi): When vectorizing epilogue loops,
        try to reuse accumulators from the main loop.  Record the initial
        value in reduc_info for non-SLP reductions too.

2021-07-13  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-loop.c (get_initial_def_for_reduction): Remove
        adjustment handling.  Take the neutral value as an argument,
        in place of the code argument.
        (vect_transform_cycle_phi): Update accordingly.  Handle the
        initial values of cond reductions separately from code reductions.
        Choose the adjustment here rather than in
        get_initial_def_for_reduction.  Sink the splat of vec_initial_def.

2021-07-13  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-loop.c (neutral_op_for_slp_reduction): Replace with...
        (neutral_op_for_reduction): ...this, providing a more general
        interface.
        (vect_create_epilog_for_reduction): Update accordingly.
        (vectorizable_reduction): Likewise.
        (vect_transform_cycle_phi): Likewise.

2021-07-13  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-loop.c (get_initial_def_for_reduction): Take the
        reduc_info instead of the original stmt_vec_info.
        (vect_transform_cycle_phi): Update accordingly.

2021-07-13  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-loop.c (get_initial_defs_for_reduction): Take the
        reduc_info as an additional parameter.
        (vect_transform_cycle_phi): Update accordingly.

2021-07-13  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h: Include tree-ssa-operands.h.
        (vect_phi_initial_value): New function.
        * tree-vect-loop.c (neutral_op_for_slp_reduction): Use it.
        (get_initial_defs_for_reduction, info_for_reduction): Likewise.
        (vect_create_epilog_for_reduction, vectorizable_reduction): Likewise.
        (vect_transform_cycle_phi, vectorizable_induction): Likewise.

2021-07-13  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-loop.c (vect_create_epilog_for_reduction): Convert
        the phi results to vectype after creating them.  Remove later
        conversion code that thus becomes redundant.

2021-07-13  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-loop.c (vect_create_epilog_for_reduction): Replace
        the new_phis vector with a reduc_inputs vector.  Combine handling
        of reduction chains and ncopies > 1.

2021-07-13  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-loop.c (vect_create_epilog_for_reduction): Truncate
        scalar_results to group_size elements after reducing down from
        N*group_size elements.  Construct an array_slice of the live-out
        stmts and assert that there is one stmt per scalar result.

2021-07-13  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-loop.c (vect_create_epilog_for_reduction): Remove
        nested_in_vect_loop and use double_reduc everywhere.  Remove dead
        assignment to "loop".

2021-07-13  Richard Sandiford  <richard.sandiford@arm.com>

        * internal-fn.c (vectorized_internal_fn_supported_p): Handle
        vector types first.  For scalar types, consider both the preferred
        vector mode and the alternative vector modes.
        * optabs-query.c (can_vec_mask_load_store_p): Use the same
        structure as above, in particular using related_vector_mode
        for modes provided by autovectorize_vector_modes.

2021-07-13  Jakub Jelinek  <jakub@redhat.com>
            Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101419
        * tree-pass.h (PROP_objsz): Define.
        (make_pass_early_object_sizes): Declare.
        * passes.def (pass_all_early_optimizations): Rename pass_object_sizes
        there to pass_early_object_sizes, drop parameter.
        (pass_all_optimizations): Move pass_object_sizes right after pass_ccp,
        drop parameter, move pass_post_ipa_warn right after that.
        * tree-object-size.c (pass_object_sizes::execute): Rename to...
        (object_sizes_execute): ... this.  Add insert_min_max_p argument.
        (pass_data_object_sizes): Move after object_sizes_execute.
        (pass_object_sizes): Likewise.  In execute method call
        object_sizes_execute, drop set_pass_param method and insert_min_max_p
        non-static data member and its initializer in the ctor.
        (pass_data_early_object_sizes, pass_early_object_sizes,
        make_pass_early_object_sizes): New.
        * tree-ssa-sccvn.c (copy_reference_ops_from_ref): Use
        (cfun->curr_properties & PROP_objsz) instead of cfun->after_inlining.

2021-07-13  Kito Cheng  <kito.cheng@sifive.com>

        PR target/101275
        * config/riscv/constraints.md ("S"): Update description and remove
        @internal.
        * doc/md.texi (Machine Constraints): Document the 'S' constraints
        for RISC-V.

2021-07-13  Richard Biener  <rguenther@suse.de>

        Revert:
        2021-07-12  Richard Biener  <rguenther@suse.de>

        * tree-vect-slp.c (vect_slp_region): Show the number of
        SLP graph entries in the optimization message.

2021-07-13  Michael Meissner  <meissner@linux.ibm.com>

        * config/rs6000/altivec.md (xxspltiw_v4sf): Change local variable
        value to to long.
        * config/rs6000/rs6000-protos.h (rs6000_const_f32_to_i32): Change
        return type to long.
        * config/rs6000/rs6000.c (rs6000_const_f32_to_i32): Change return
        type to long.

2021-07-12  Andrew MacLeod  <amacleod@redhat.com>

        * gimple-range-fold.cc (fold_using_range::range_of_builtin_ubsan_call):
        Query relation between the 2 operands and use it.

2021-07-12  Sergei Trofimovich  <siarheit@google.com>

        * doc/cfg.texi: Fix s/ei_safe_safe/ei_safe_edge/ typo.

2021-07-12  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/101424
        * config/i386/predicates.md (vec_setm_sse41_operand):
        Rename from vec_setm_operand.
        (vec_setm_avx2_operand): New predicate.
        * config/i386/sse.md (vec_set<V_128:mode>): Use V_128 mode iterator.
        Use vec_setm_sse41_operand as operand 2 predicate.
        (vec_set<V_256_512:mode): New expander.
        * config/i386/mmx.md (vec_setv2hi): Use vec_setm_sse41_operand
        as operand 2 predicate.

2021-07-12  Andrew MacLeod  <amacleod@redhat.com>

        PR tree-optimization/101335
        * range-op.cc (operator_cast::lhs_op1_relation): Delete.

2021-07-12  Andrew Pinski  <apinski@marvell.com>

        * tree-ssa-phiopt.c (match_simplify_replacement): Move
        insert of the sequence before the movement of the
        statement. Check if to see if the statement is used
        outside of the original phi to see if we should move it.

2021-07-12  Richard Biener  <rguenther@suse.de>

        * dump-context.h (debug_dump_context::debug_dump_context):
        Add FILE * parameter defaulted to stderr.
        * dumpfile.c (debug_dump_context::debug_dump_context): Adjust.
        * tree-vect-slp.c (dot_slp_tree): New functions.

2021-07-12  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101373
        * tree-ssa-pre.c (prune_clobbered_mems): Also prune trapping
        references when the BB may not return.
        (compute_avail): Pass in the function we're working on and
        replace cfun references with it.  Externally throwing
        const calls also possibly terminate the function.
        (pass_pre::execute): Pass down the function we're working on.
        * gcse.c (compute_hash_table_work): Externally throwing
        const/pure calls also need record_last_mem_set_info.
        * postreload-gcse.c (record_opr_changes): Looping or externally
        throwing const/pure calls also need record_last_mem_set_info.

2021-07-12  Uroš Bizjak  <ubizjak@gmail.com>

        * recog.c (memory_address_addr_space_p): Change the type to bool.
        Return true/false instead of 1/0.
        (offsettable_memref_p): Ditto.
        (offsettable_nonstrict_memref_p): Ditto.
        (offsettable_address_addr_space_p): Ditto.
        Change the type of addressp indirect function to bool.
        * recog.h (memory_address_addr_space_p): Change the type to bool.
        (strict_memory_address_addr_space_p): Ditto.
        (offsettable_memref_p): Ditto.
        (offsettable_nonstrict_memref_p): Ditto.
        (offsettable_address_addr_space_p): Ditto.
        * reload.c (maybe_memory_address_addr_space_p): Ditto.
        (strict_memory_address_addr_space_p): Change the type to bool.
        Return true/false instead of 1/0.
        (maybe_memory_address_addr_space_p): Change the type to bool.

2021-07-12  Richard Biener  <rguenther@suse.de>

        * tree-vect-slp.c (vect_slp_region): Show the number of
        SLP graph entries in the optimization message.

2021-07-12  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101394
        * tree-ssa-pre.c (do_pre_regular_insertion): Avoid inserting
        copies from abnormals for a full redundancy.

2021-07-12  Richard Biener  <rguenther@suse.de>

        PR middle-end/101423
        * gimple.c (gimple_could_trap_p_1): Internal function calls
        do not trap.
        * tree-eh.c (tree_could_trap_p): Likewise.

2021-07-12  prathamesh.kulkarni  <prathamesh.kulkarni@linaro.org>

        PR target/66791
        * config/arm/arm_neon.h (vmul_n_u32): Replace call to builtin with
        __a * __b.
        (vmulq_n_u32): Likewise.
        (vmul_n_f32): Gate __a * __b on __FAST_MATH__.
        (vmulq_n_f32): Likewise.
        (vmul_n_f16): Likewise.
        (vmulq_n_f16): Likewise.

2021-07-12  Martin Liska  <mliska@suse.cz>

        PR sanitizer/101425
        * gcc.c (check_offload_target_name): Call
          candidates_list_and_hint only if we have a candidate.

2021-07-12  prathamesh.kulkarni  <prathamesh.kulkarni@linaro.org>

        PR target/98435
        * config/arm/neon.md (vec_init): Move to ...
        * config/arm/vec-common.md (vec_init): ... here.
        Change the pattern's mode to VDQX and gate it on VALID_MVE_MODE.

2021-07-12  Roger Sayle  <roger@nextmovesoftware.com>

        PR tree-optimization/101403
        * match.pd ((T)bswap(X)>>C): Correctly handle cases where
        signedness of the shift is not the same as the signedness of
        the type extension.

2021-07-09  Roger Sayle  <roger@nextmovesoftware.com>
            Uroš Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.md (*divmodsi4_const): Optimize SImode
        divmod of a constant numerator with new define_insn_and_split.

2021-07-09  Iain Sandoe  <iain@sandoe.co.uk>

        PR target/100152
        * config/i386/i386-expand.c (ix86_expand_call): If a call is
        to a non-local-binding, or local but to a public symbol, then
        assume that it might be indirected via the lazy symbol binder.
        Mark R10 and R10 as clobbered in that case.

2021-07-09  Eric Botcazou  <ebotcazou@adacore.com>

        PR target/101377
        * gcc.c (ASM_DEBUG_DWARF_OPTION): Set again to --gdwarf2 in
        the case where HAVE_AS_WORKING_DWARF_N_FLAG is not defined
        and HAVE_LD_BROKEN_PE_DWARF5 is defined.

2021-07-09  Uroš Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.md (*udivmodsi4_pow2_zext_1): Limit the
        log2 range of operands[3] to [1,31].
        (*udivmodsi4_pow2_zext_2): Ditto.  Correct insn RTX pattern.

2021-07-09  Sergei Trofimovich  <siarheit@google.com>

        * doc/md.texi: Don't split @smallexample in multiple @groups.

2021-07-09  Sergei Trofimovich  <siarheit@google.com>

        * doc/md.texi: Add missing 'see' word.

2021-07-09  Andrew Pinski  <apinski@marvell.com>

        * tree-ssa-phiopt.c (phiopt_early_allow): Change arguments
        to take sequence and gimple_match_op.  Accept the case where
        op is a SSA_NAME and one statement in the sequence.
        Also allow constants.
        (gimple_simplify_phiopt): Always pass a sequence to resimplify.
        Update call to phiopt_early_allow.  Discard the sequence if not
        used.

2021-07-09  Xi Ruoyao  <xry111@mengyan1223.wang>

        PR target/100760
        PR target/100761
        PR target/100762
        * config/mips/mips.c (mips_const_insns): Use MSA_SUPPORTED_MODE_P
        instead of ISA_HAS_MSA.
        (mips_expand_vec_unpack): Likewise.
        (mips_expand_vector_init): Likewise.

2021-07-09  Kewen Lin  <linkw@linux.ibm.com>

        * config/rs6000/vsx.md (mods_<mode>): Rename to...
        (mod<mode>3): ... this.
        (modu_<mode>): Rename to...
        (umod<mode>3): ... this.
        * config/rs6000/rs6000-builtin.def (MODS_V2DI, MODS_V4SI, MODU_V2DI,
        MODU_V4SI): Adjust.

2021-07-08  Jeff Law  <jeffreyalaw@gmail.com>

        * config/h8300/shiftrotate.md (variable shifts): Expose condition
        code handling for the test before the loop.

2021-07-08  Martin Jambor  <mjambor@suse.cz>

        PR ipa/101066
        * ipa-sra.c (class isra_call_summary): New member
        m_before_any_store, initialize it in the constructor.
        (isra_call_summary::dump): Dump the new field.
        (ipa_sra_call_summaries::duplicate): Copy it.
        (process_scan_results): Set it.
        (isra_write_edge_summary): Stream it.
        (isra_read_edge_summary): Likewise.
        (param_splitting_across_edge): Only override
        safe_to_import_accesses if m_before_any_store is set.

2021-07-08  Martin Sebor  <msebor@redhat.com>

        PR bootstrap/101374
        * gimple-array-bounds.cc (array_bounds_checker::check_mem_ref):
        Use Object Size Type 0 instead of 1.

2021-07-08  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-loop.c (vectorizable_reduction): Remove always-true
        if condition.

2021-07-08  Richard Sandiford  <richard.sandiford@arm.com>

        * match.pd: Simplify an extend-operate-truncate sequence involving
        a POLY_INT_CST.

2021-07-08  Roger Sayle  <roger@nextmovesoftware.com>
            Richard Biener  <rguenther@suse.de>

        PR tree-optimization/40210
        * match.pd (bswap optimizations): Simplify (bswap(x)>>C1)&C2 as
        (x>>C3)&C2 when possible.  Simplify bswap(x)>>C1 as ((T)x)>>C2
        when possible.  Simplify bswap(x)&C1 as (x>>C2)&C1 when 0<=C1<=255.

2021-07-08  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/100637
        * config/i386/i386-expand.c (ix86_expand_sse_unpack):
        Handle V4QI mode.
        * config/i386/mmx.md (V_32): New mode iterator.
        (mov<V_32:mode>): Use V_32 mode iterator.
        (*mov<V_32:mode>_internal): Ditto.
        (*push<V_32:mode>2_rex64): Ditto.
        (*push<V_32:mode>2): Ditto.
        (movmisalign<V_32:mode>): Ditto.
        (mmx_<any_shiftrt:insn>v1si3): New insn pattern.
        (sse4_1_<any_extend:code>v2qiv2hi2): Ditto.
        (vec_unpacks_lo_v4qi): New expander.
        (vec_unpacks_hi_v4qi): Ditto.
        (vec_unpacku_lo_v4qi): Ditto.
        (vec_unpacku_hi_v4qi): Ditto.
        * config/i386/i386.h (VALID_SSE2_REG_MODE): Add V1SImode.
        (VALID_INT_MODE_P): Ditto.

2021-07-08  Michael Meissner  <meissner@linux.ibm.com>

        PR target/100809
        * config/rs6000/rs6000.md (udivti3): New insn.
        (divti3): New insn.
        (umodti3): New insn.
        (modti3): New insn.

2021-07-07  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/100137
        PR tree-optimization/99121
        PR tree-optimization/97027
        * builtins.c (access_ref::access_ref): Also set offmax.
        (access_ref::offset_in_range): Define new function.
        (access_ref::add_offset): Set offmax.
        (access_ref::inform_access): Handle access_none.
        (handle_mem_ref): Clear ostype.
        (compute_objsize_r): Handle ASSERT_EXPR.
        * builtins.h (struct access_ref): Add offmax member.
        * gimple-array-bounds.cc (array_bounds_checker::check_mem_ref): Use
        compute_objsize() and simplify.

2021-07-07  Peter Bergner  <bergner@linux.ibm.com>

        * config/rs6000/rs6000-call.c (mma_init_builtins): Use VSX_BUILTIN_LXVP
        and VSX_BUILTIN_STXVP.

2021-07-07  Martin Sebor  <msebor@redhat.com>

        PR target/101363
        * config/aarch64/aarch64.c (aarch64_simd_lane_bounds): Remove
        a stray %K from error_at() missed in r12-2088.

2021-07-07  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/99728
        * tree-ssa-loop-im.c (gather_mem_refs_stmt): Record
        aggregate copies.
        (mem_refs_may_alias_p): Add assert we handled aggregate
        copies elsewhere.
        (sm_seq_valid_bb): Give up when running into aggregate copies.
        (ref_indep_loop_p): Handle aggregate copies as never
        being invariant themselves but allow other refs to be
        disambiguated against them.
        (can_sm_ref_p): Do not try to apply store-motion to aggregate
        copies.

2021-07-06  Indu Bhagat  <indu.bhagat@oracle.com>

        PR debug/101283
        * dwarf2ctf.c (ctf_get_AT_data_member_location): Multiply by 8 to get
        number of bits.

2021-07-06  Martin Sebor  <msebor@redhat.com>

        * gimple-pretty-print.c (percent_G_format): Remove.
        * tree-diagnostic.c (default_tree_printer): Remove calls.
        * tree-pretty-print.c (percent_K_format): Remove.
        * tree-pretty-print.h (percent_K_format): Remove.

2021-07-06  Martin Sebor  <msebor@redhat.com>

        * config/aarch64/aarch64-builtins.c (aarch64_simd_expand_builtin):
        Remove %K and use error_at.
        (aarch64_expand_fcmla_builtin): Same.
        (aarch64_expand_builtin_tme): Same.
        (aarch64_expand_builtin_memtag): Same.
        * config/arm/arm-builtins.c (arm_expand_acle_builtin): Same.
        (arm_expand_builtin): Same.
        * config/arm/arm.c (bounds_check): Same.

2021-07-06  Martin Sebor  <msebor@redhat.com>

        * builtins.c (warn_string_no_nul): Remove %G.
        (maybe_warn_for_bound): Same.
        (warn_for_access): Same.
        (check_access): Same.
        (check_strncat_sizes): Same.
        (expand_builtin_strncat): Same.
        (expand_builtin_strncmp): Same.
        (expand_builtin): Same.
        (expand_builtin_object_size): Same.
        (warn_dealloc_offset): Same.
        (maybe_emit_free_warning): Same.
        * calls.c (maybe_warn_alloc_args_overflow): Same.
        (maybe_warn_nonstring_arg): Same.
        (maybe_warn_rdwr_sizes): Same.
        * expr.c (expand_expr_real_1): Remove %K.
        * gimple-fold.c (gimple_fold_builtin_strncpy): Remove %G.
        (gimple_fold_builtin_strncat): Same.
        * gimple-ssa-sprintf.c (format_directive): Same.
        (handle_printf_call): Same.
        * gimple-ssa-warn-alloca.c (pass_walloca::execute): Same.
        * gimple-ssa-warn-restrict.c (maybe_diag_overlap): Same.
        (maybe_diag_access_bounds): Same.  Call gimple_location.
        (check_bounds_or_overlap): Same.
        * trans-mem.c (ipa_tm_scan_irr_block): Remove %K.  Simplify.
        * tree-ssa-ccp.c (pass_post_ipa_warn::execute): Remove %G.
        * tree-ssa-strlen.c (maybe_warn_overflow): Same.
        (maybe_diag_stxncpy_trunc): Same.
        (handle_builtin_stxncpy_strncat): Same.
        (maybe_warn_pointless_strcmp): Same.
        * tree-ssa-uninit.c (maybe_warn_operand): Same.

2021-07-06  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/97194
        * config/i386/predicates.md (vec_setm_operand): Enable
        register_operand for TARGET_SSE4_1.
        * config/i386/mmx.md (vec_setv2hi): Use vec_setm_operand
        as operand 2 predicate.  Call ix86_expand_vector_set_var
        for non-constant index operand.
        (vec_setv4qi): Use vec_setm_mmx_operand as operand 2 predicate.
        Call ix86_expand_vector_set_var for non-constant index operand.

2021-07-06  Jeff Law  <jeffreyalaw@gmail.com>

        * config/h8300/jumpcall.md (*branch): When possible, generate
        the comparison in CCZN mode.
        * config/h8300/predicates.md (simple_memory_operand): Reject all
        auto-increment addressing modes.

2021-07-06  Iain Sandoe  <iain@sandoe.co.uk>

        PR bootstrap/100246
        * config/i386/i386.h (struct stringop_algs): Define a CTOR for
        this type.

2021-07-06  Richard Biener  <rguenther@suse.de>

        * doc/md.texi (vec_fmaddsub<mode>4): Document.
        (vec_fmsubadd<mode>4): Likewise.
        * optabs.def (vec_fmaddsub$a4): Add.
        (vec_fmsubadd$a4): Likewise.
        * internal-fn.def (IFN_VEC_FMADDSUB): Add.
        (IFN_VEC_FMSUBADD): Likewise.
        * tree-vect-slp-patterns.c (addsub_pattern::recognize):
        Refactor to handle IFN_VEC_FMADDSUB and IFN_VEC_FMSUBADD.
        (addsub_pattern::build): Likewise.
        * tree-vect-slp.c (vect_optimize_slp): CFN_VEC_FMADDSUB
        and CFN_VEC_FMSUBADD are not transparent for permutes.
        * config/i386/sse.md (vec_fmaddsub<mode>4): New expander.
        (vec_fmsubadd<mode>4): Likewise.

2021-07-06  Richard Biener  <rguenther@suse.de>

        * doc/invoke.texi (fmove-loop-stores): Document.
        * common.opt (fmove-loop-stores): New option.
        * opts.c (default_options_table): Enable -fmove-loop-stores
        at -O1 but not -Og.
        * tree-ssa-loop-im.c (pass_lim::execute): Pass
        flag_move_loop_stores instead of true to
        loop_invariant_motion_in_fun.

2021-07-06  Iain Sandoe  <iain@sandoe.co.uk>

        * doc/install.texi: Document --with-dsymutil.

2021-07-06  Andrew Pinski  <apinski@marvell.com>

        PR tree-optimization/101256
        * dbgcnt.def (phiopt_edge_range): New counter.
        * tree-ssa-phiopt.c (replace_phi_edge_with_variable):
        Check to make sure the new name is defined in the same
        bb as the conditional before duplicating range info.
        Also add debug counter.

2021-07-06  Kewen Lin  <linkw@linux.ibm.com>

        PR rtl-optimization/100328
        * config/i386/i386-options.c (ix86_option_override_internal):
        Set param_ira_consider_dup_in_all_alts to 0.

2021-07-06  Kewen Lin  <linkw@linux.ibm.com>

        PR rtl-optimization/100328
        * doc/invoke.texi (ira-consider-dup-in-all-alts): Document new
        parameter.
        * ira.c (ira_get_dup_out_num): Adjust as parameter
        param_ira_consider_dup_in_all_alts.
        * params.opt (ira-consider-dup-in-all-alts): New.
        * ira-conflicts.c (process_regs_for_copy): Add one parameter
        single_input_op_has_cstr_p.
        (get_freq_for_shuffle_copy): New function.
        (add_insn_allocno_copies): Adjust as single_input_op_has_cstr_p.
        * ira-int.h (ira_get_dup_out_num): Add one bool parameter.

2021-07-05  Jeff Law  <jeffreyalaw@gmail.com>

        * config/h8300/shiftrotate.md (shift-by-variable patterns): Update to
        generate condition code aware RTL directly.

2021-07-05  Andrew Pinski  <apinski@marvell.com>

        PR tree-optimization/101039
        * match.pd (A CMP 0 ? A : -A): New patterns.
        * tree-ssa-phiopt.c (abs_replacement): Delete function.
        (tree_ssa_phiopt_worker): Don't call abs_replacement.
        Update comment about abs_replacement.

2021-07-05  Andrew Pinski  <apinski@marvell.com>

        * tree-ssa-phiopt.c (gimple_simplify_phiopt):
        If "A ? B : C" fails to simplify, try "(!A) ? C : B".

2021-07-05  Andrew Pinski  <apinski@marvell.com>

        * tree-ssa-phiopt.c (match_simplify_replacement):
        Add early_p argument. Call gimple_simplify_phiopt
        instead of gimple_simplify.
        (tree_ssa_phiopt_worker): Update call to
        match_simplify_replacement and allow unconditionally.
        (phiopt_early_allow): New function.
        (gimple_simplify_phiopt): New function.

2021-07-05  Andrew Pinski  <apinski@marvell.com>

        PR middle-end/101237
        * fold-const.c (negate_expr_p): Remove call to element_mode
        and TREE_MODE/TREE_TYPE when calling HONOR_SIGNED_ZEROS,
        HONOR_SIGN_DEPENDENT_ROUNDING, and HONOR_SNANS.
        (fold_negate_expr_1): Likewise.
        (const_unop): Likewise.
        (fold_cond_expr_with_comparison): Likewise.
        (fold_binary_loc): Likewise.
        (fold_ternary_loc): Likewise.
        (tree_call_nonnegative_warnv_p): Likewise.
        * match.pd (-(A + B) -> (-B) - A): Likewise.

2021-07-05  Iain Sandoe  <iain@sandoe.co.uk>

        * configure.ac: Handle --with-dsymutil in the same way as we
        do for the assembler and linker.  (DEFAULT_DSYMUTIL): New.
        Extract the type and version for the dsymutil configured or
        found by the default searches.
        * config.in: Regenerated.
        * configure: Regenerated.
        * collect2.c (do_dsymutil): Handle locating dsymutil in the
        same way as for the assembler and  linker.
        * config/darwin.h (DSYMUTIL): Delete.
        * gcc.c: Report a configured dsymutil correctly.
        * exec-tool.in: Allow for dsymutil.

2021-07-05  Uroš Bizjak  <ubizjak@gmail.com>

        * config/i386/i386-expand.c (ix86_split_mmx_punpck):
        Handle V4QI and V2HI modes.
        (expand_vec_perm_blend): Allow 4-byte vector modes with TARGET_SSE4_1.
        Handle V4QI mode. Emit mmx_pblendvb32 for 4-byte modes.
        (expand_vec_perm_pshufb): Rewrite to use switch statemets.
        Handle 4-byte dual operands with TARGET_XOP and single operands
        with TARGET_SSSE3.  Emit mmx_ppermv32 for TARGET_XOP and
        mmx_pshufbv4qi3 for TARGET_SSSE3.
        (expand_vec_perm_pblendv): Allow 4-byte vector modes with TARGET_SSE4_1.
        (expand_vec_perm_interleave2): Allow 4-byte vector modes.
        (expand_vec_perm_pshufb2): Allow 4-byte vector modes with TARGET_SSSE3.
        (expand_vec_perm_even_odd_1): Handle V4QI mode.
        (expand_vec_perm_broadcast_1): Handle V4QI mode.
        (ix86_vectorize_vec_perm_const): Handle V4QI mode.
        * config/i386/mmx.md (mmx_ppermv32): New insn pattern.
        (mmx_pshufbv4qi3): Ditto.
        (*mmx_pblendw32): Ditto.
        (*mmx_pblendw64): Rename from *mmx_pblendw.
        (mmx_punpckhbw_low): New insn_and_split pattern.
        (mmx_punpcklbw_low): Ditto.

2021-07-05  Richard Biener  <rguenther@suse.de>

        * tree-vect-loop-manip.c (vect_loop_versioning): Do not
        set LOOP_C_INFINITE on the vectorized loop.

2021-07-05  Richard Biener  <rguenther@suse.de>

        PR middle-end/101291
        * cfgloopmanip.c (loop_version): Set the loop copy of the
        versioned loop to the new loop.

2021-07-04  Iain Sandoe  <iain@sandoe.co.uk>

        PR target/100269
        * config.gcc: Ensure that Darwin biarch definitions are
        added before i386.h.
        * config/i386/darwin.h (TARGET_64BIT): Remove.
        (PR80556_WORKAROUND): New.
        (REAL_LIBGCC_SPEC): Amend to use PR80556_WORKAROUND.
        (DARWIN_SUBARCH_SPEC): New.
        * config/i386/darwin32-biarch.h (TARGET_64BIT_DEFAULT,
        TARGET_BI_ARCH, PR80556_WORKAROUND): New.
        (REAL_LIBGCC_SPEC): Remove.
        * config/i386/darwin64-biarch.h (TARGET_64BIT_DEFAULT,
        TARGET_BI_ARCH, PR80556_WORKAROUND): New.
        (REAL_LIBGCC_SPEC): Remove.

2021-07-03  H.J. Lu  <hjl.tools@gmail.com>

        PR middle-end/101294
        * expr.c (store_constructor): Don't use vec_duplicate on vector.

2021-07-02  Martin Sebor  <msebor@redhat.com>

        PR middle-end/98871
        PR middle-end/98512
        * diagnostic.c (get_any_inlining_info): New.
        (update_effective_level_from_pragmas): Handle inlining context.
        (diagnostic_enabled): Same.
        (diagnostic_report_diagnostic): Same.
        * diagnostic.h (struct diagnostic_info): Add ctor.
        (struct diagnostic_context): Add new member.
        * tree-diagnostic.c (set_inlining_locations): New.
        (tree_diagnostics_defaults): Set new callback pointer.

2021-07-02  Peter Bergner  <bergner@linux.ibm.com>

        * config/rs6000/rs6000-builtin.def (BU_MMA_PAIR_LD, BU_MMA_PAIR_ST):
        New macros.
        (__builtin_vsx_lxvp, __builtin_vsx_stxvp): New built-ins.
        * config/rs6000/rs6000-call.c (rs6000_gimple_fold_mma_builtin): Expand
        lxvp and stxvp built-ins.
        (mma_init_builtins): Handle lxvp and stxvp built-ins.
        (builtin_function_type): Likewise.
        * doc/extend.texi (__builtin_vsx_lxvp, __builtin_mma_stxvp): Document.

2021-07-02  Jeff Law  <jeffreyalaw@gmail.com>

        * config/h8300/h8300-protos.h (compute_a_shift_cc): Accept
        additional argument for the code.
        * config/h8300/h8300.c (compute_a_shift_cc): Accept additional
        argument for the code.  Just return if the ZN bits are useful or
        not rather than the old style CC_* enums.
        * config/h8300/shiftrotate.md (shiftqi_noscratch): Move before
        more generic shiftqi patterns.
        (shifthi_noscratch, shiftsi_noscratch): Similarly.
        (shiftqi_noscratch_set_flags): New pattern.
        (shifthi_noscratch_set_flags, shiftsi_noscratch_set_flags): Likewise.

2021-07-02  Andrew MacLeod  <amacleod@redhat.com>

        PR tree-optimization/101223
        * range-op.cc (build_lt): Add -1 for signed values.
        (built_gt): Subtract -1 for signed values.

2021-07-02  David Faust  <david.faust@oracle.com>

        * btfout.c (get_btf_kind): Support BTF_KIND_FLOAT.
        (btf_asm_type): Likewise.

2021-07-02  Jeff Law  <jeffreyalaw@gmail.com>

        * config/h8300/h8300-protos.h (output_a_shift): Make first argument
        an array of rtx rather than a pointer to rtx.  Add code argument.
        (compute_a_shift_length): Similarly.
        * config/h8300/h8300.c (h8300_shift_costs): Adjust now that the
        shift itself isn't an operand.  Create dummy operand[0] to carry
        a mode and pass a suitable rtx code to compute_a_shift_length.
        (get_shift_alg): Adjust operand number of clobber in output templates.
        (output_a_shift): Make first argument an array of rtx rather than
        a pointer to rtx.  Add code argument for the type of shift.
        Adjust now that the shift itself is no longer an operand.
        (compute_a_shift_length): Similarly.
        * config/h8300/shiftrotate.md (shiftqi, shifthi, shiftsi): Use an
        iterator rather than nshift_operator.
        (shiftqi_noscratch, shifthi_noscratch, shiftsi_noscratch): Likewise.
        (shiftqi_clobber_flags): Adjust to API changes in output_a_shift
        and compute_a_shift_length.
        (shiftqi_noscratch_clobber_flags): Likewise.
        (shifthi_noscratch_clobber_flags): Likewise.
        (shiftsi_noscratch_clobber_flags): Likewise.

2021-07-02  Iain Sandoe  <iain@sandoe.co.uk>

        PR debug/101283
        * config/darwin.h (DSYMUTIL_SPEC): Do not try to run
        dsymutil for BTF/CTF.

2021-07-02  Iain Sandoe  <iain@sandoe.co.uk>

        PR debug/101283
        * config/darwin.h (CTF_INFO_SECTION_NAME): Update the
        segment to include BTF.
        (BTF_INFO_SECTION_NAME): New.

2021-07-02  Jeff Law  <jeffreyalaw@gmail.com>

        * config/m32r/m32r-protos.h (call_operand): Adjust return type.
        (small_data_operand, memreg_operand, small_insn_p): Likewise.
        * config/m32r/m32r.c (call_operand): Adjust return type.
        (small_data_operand, memreg_operand): Likewise.

2021-07-02  Jeff Law  <jeffreyalaw@gmail.com>

        * config/frv/frv-protos.h  (integer_register_operand): Adjust return
        type.
        (frv_load_operand, gpr_or_fpr_operand, gpr_no_subreg_operand): Likewise.
        (fpr_or_int6_operand, gpr_or_int_operand); Likewise.
        (gpr_or_int12_operand, gpr_or_int10_operand); Likewise.
        (move_source_operand, move_destination_operand): Likewise.
        (condexec_source_operand, condexec_dest_operand): Likewise.
        (lr_operand, gpr_or_memory_operand, fpr_or_memory_operand): Likewise.
        (reg_or_0_operand, fcc_operand, icc_operand, cc_operand): Likewise.
        (fcr_operand, icr_operand, cr_operand, call_operand): Likewise.
        (fpr_operand, even_reg_operand, odd_reg_operand): Likewise.
        (even_gpr_operand, odd_gpr_operand, quad_fpr_operand): Likewise.
        (even_fpr_operand, odd_fpr_operand): Likewise.
        (dbl_memory_one_insn_operand, dbl_memory_two_insn_operand): Likewise.
        (int12_operand, int6_operand, int5_operand, uint5_operand): Likewise.
        (uint4_operand, uint1_operand, int_2word_operand): Likewise
        (upper_int16_operand, uint16_operand, symbolic_operand): Likewise.
        (relational_operator, float_relational_operator): Likewise.
        (ccr_eqne_operator, minmax_operator): Likewise.
        (condexec_si_binary_operator, condexec_si_media_operator): Likewise.
        (condexec_si_divide_operator, condexec_si_unary_operator): Likewise.
        (condexec_sf_conv_operator, condexec_sf_add_operator): Likewise.
        (intop_compare_operator, acc_operand, even_acc_operand): Likewise.
        (quad_acc_operand, accg_operand): Likewise.

2021-07-02  Jeff Law  <jeffreyalaw@gmail.com>

        * config/stormy16/stormy16-protos.h (xstormy16_below_100_symbol): Change
        return type to a bool.
        (nonimmediate_nonstack_operand): Likewise.
        (xstormy16_splittable_below100_operand): Likewise.
        * config/stormy16/stormy16.c (xstormy16_below_100_symbol): Fix
        return type.
        (xstormy16_splittable_below100_operand): Likewise.

2021-07-02  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101293
        * tree-ssa-loop-im.c (mem_ref_hasher::equal): Compare MEM_REF bases
        with combined offsets.
        (gather_mem_refs_stmt): Hash MEM_REFs as if their offset were
        combined with the rest of the offset.

2021-07-02  Eric Botcazou  <ebotcazou@adacore.com>

        * config/i386/i386.c (asm_preferred_eh_data_format): Always use the
        PIC encodings for PE-COFF targets.

2021-07-02  Jakub Jelinek  <jakub@redhat.com>

        PR target/101286
        * config/i386/i386-expand.c (ix86_broadcast_from_integer_constant):
        Return nullptr for TImode inner mode.

2021-07-02  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101280
        PR tree-optimization/101173
        * gimple-loop-interchange.cc
        (tree_loop_interchange::valid_data_dependences): Properly
        guard all dependence checks with DDR_REVERSED_P or its
        inverse.

2021-07-02  Hongyu Wang  <hongyu.wang@intel.com>

        * config/i386/i386-expand.c (ix86_expand_builtin):
        Add branch to clear odata when ZF is set for asedecenc_expand
        and wideaesdecenc_expand.

2021-07-02  Eugene Rozenfeld  <erozen@microsoft.com>

        * config/i386/gcc-auto-profile: regenerate

2021-07-02  liuhongt  <hongtao.liu@intel.com>

        * config/i386/sse.md (trunc<mode><pmov_dst_4>2): Refined to ..
        (trunc<mode><pmov_dst_4_lower>2): this.

2021-07-01  David Malcolm  <dmalcolm@redhat.com>

        * diagnostic.h (diagnostic_context::m_file_cache): New field.
        * input.c (class fcache): Rename to...
        (class file_cache_slot): ...this, making most members private and
        prefixing fields with "m_".
        (file_cache_slot::get_file_path): New accessor.
        (file_cache_slot::get_use_count): New accessor.
        (file_cache_slot::missing_trailing_newline_p): New accessor.
        (file_cache_slot::inc_use_count): New.
        (fcache_buffer_size): Move to...
        (file_cache_slot::buffer_size): ...here.
        (fcache_line_record_size): Move to...
        (file_cache_slot::line_record_size): ...here.
        (fcache_tab): Delete, in favor of global_dc->m_file_cache.
        (fcache_tab_size): Move to file_cache::num_file_slots.
        (diagnostic_file_cache_init): Update for move of fcache_tab
        to global_dc->m_file_cache.
        (diagnostic_file_cache_fini): Likewise.
        (lookup_file_in_cache_tab): Convert to...
        (file_cache::lookup_file): ...this.
        (diagnostics_file_cache_forcibly_evict_file): Update for move of
        fcache_tab to global_dc->m_file_cache, moving most of
        implementation to...
        (file_cache::forcibly_evict_file): ...this new function and...
        (file_cache_slot::evict): ...this new function.
        (evicted_cache_tab_entry): Convert to...
        (file_cache::evicted_cache_tab_entry): ...this.
        (add_file_to_cache_tab): Convert to...
        (file_cache::add_file): ...this, moving bulk of implementation
        to...
        (file_cache_slot::create): ..this new function.
        (file_cache::file_cache): New.
        (file_cache::~file_cache): New.
        (lookup_or_add_file_to_cache_tab): Convert to...
        (file_cache::lookup_or_add_file): ..this new function.
        (fcache::fcache): Rename to...
        (file_cache_slot::file_cache_slot): ...this, adding "m_" prefixes
        to fields.
        (fcache::~fcache): Rename to...
        (file_cache_slot::~file_cache_slot): ...this, adding "m_" prefixes
        to fields.
        (needs_read): Convert to...
        (file_cache_slot::needs_read_p): ...this.
        (needs_grow): Convert to...
        (file_cache_slot::needs_grow_p): ...this.
        (maybe_grow): Convert to...
        (file_cache_slot::maybe_grow): ...this.
        (read_data): Convert to...
        (file_cache_slot::read_data): ...this.
        (maybe_read_data): Convert to...
        (file_cache_slot::maybe_read_data): ...this.
        (get_next_line): Convert to...
        (file_cache_slot::get_next_line): ...this.
        (goto_next_line): Convert to...
        (file_cache_slot::goto_next_line): ...this.
        (read_line_num): Convert to...
        (file_cache_slot::read_line_num): ...this.
        (location_get_source_line): Update for moving of globals to
        global_dc->m_file_cache.
        (location_missing_trailing_newline): Likewise.
        * input.h (class file_cache_slot): New forward decl.
        (class file_cache): New.

2021-07-01  Michael Meissner  <meissner@linux.ibm.com>

        * config/rs6000/rs6000.c (rs6000_maybe_emit_fp_cmove): Add IEEE
        128-bit floating point conditional move support.
        (have_compare_and_set_mask): Add IEEE 128-bit floating point
        types.
        * config/rs6000/rs6000.md (mov<mode>cc, IEEE128 iterator): New insn.
        (mov<mode>cc_p10, IEEE128 iterator): New insn.
        (mov<mode>cc_invert_p10, IEEE128 iterator): New insn.
        (fpmask<mode>, IEEE128 iterator): New insn.
        (xxsel<mode>, IEEE128 iterator): New insn.

2021-07-01  Iain Sandoe  <iain@sandoe.co.uk>

        PR debug/101283
        * config/darwin.h (CTF_INFO_SECTION_NAME): New.

2021-07-01  H.J. Lu  <hjl.tools@gmail.com>

        * config/i386/i386-expand.c (ix86_expand_vector_init_duplicate):
        Make it global.
        * config/i386/i386-protos.h (ix86_expand_vector_init_duplicate):
        New prototype.
        * config/i386/sse.md (INT_BROADCAST_MODE): New mode iterator.
        (vec_duplicate<mode>): New expander.

2021-07-01  H.J. Lu  <hjl.tools@gmail.com>

        PR target/100865
        * config/i386/i386-expand.c (ix86_expand_vector_init_duplicate):
        New prototype.
        (ix86_byte_broadcast): New function.
        (ix86_convert_const_wide_int_to_broadcast): Likewise.
        (ix86_expand_move): Convert CONST_WIDE_INT to broadcast if mode
        size is 16 bytes or bigger.
        (ix86_broadcast_from_integer_constant): New function.
        (ix86_expand_vector_move): Convert CONST_WIDE_INT and CONST_VECTOR
        to broadcast if mode size is 16 bytes or bigger.
        * config/i386/i386-protos.h (ix86_gen_scratch_sse_rtx): New
        prototype.
        * config/i386/i386.c (ix86_gen_scratch_sse_rtx): New function.

2021-07-01  Uroš Bizjak  <ubizjak@gmail.com>

        * config/i386/predicates.md (ix86_endbr_immediate_operand):
        Return true/false instead of 1/0.
        (movq_parallel): Ditto.

2021-07-01  Uroš Bizjak  <ubizjak@gmail.com>

        * recog.c (general_operand): Return true/false instead of 1/0.
        (register_operand): Ditto.
        (immediate_operand): Ditto.
        (const_int_operand): Ditto.
        (const_scalar_int_operand): Ditto.
        (const_double_operand): Ditto.
        (push_operand): Ditto.
        (pop_operand): Ditto.
        (memory_operand): Ditto.
        (indirect_operand): Ditto.

2021-07-01  Uroš Bizjak  <ubizjak@gmail.com>

        * genpreds.c (write_predicate_subfunction):
        Change the type of written subfunction to bool.
        (write_one_predicate_function):
        Change the type of written function to bool.
        (write_tm_preds_h): Ditto.
        * recog.h (*insn_operand_predicate_fn): Change the type to bool.
        * recog.c (general_operand): Change the type to bool.
        (address_operand): Ditto.
        (register_operand): Ditto.
        (pmode_register_operand): Ditto.
        (scratch_operand): Ditto.
        (immediate_operand): Ditto.
        (const_int_operand): Ditto.
        (const_scalar_int_operand): Ditto.
        (const_double_operand): Ditto.
        (nonimmediate_operand): Ditto.
        (nonmemory_operand): Ditto.
        (push_operand): Ditto.
        (pop_operand): Ditto.
        (memory_operand): Ditto.
        (indirect_operand): Ditto.
        (ordered_comparison_operator): Ditto.
        (comparison_operator): Ditto.
        * config/i386/i386-expand.c (ix86_expand_sse_cmp):
        Change the type of indirect predicate function to bool.
        * config/rs6000/rs6000.c (easy_vector_constant):
        Change the type to bool.
        * config/mips/mips-protos.h (m16_based_address_p):
        Change the type of operand 3 to bool.

2021-07-01  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101280
        PR tree-optimization/101173
        * gimple-loop-interchange.cc
        (tree_loop_interchange::valid_data_dependences): Revert
        previous change and instead correctly handle DDR_REVERSED_P
        dependence.

2021-07-01  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101278
        * tree-ssa-dse.c (dse_classify_store): First check for
        uses, then ignore stmt for chaining purposes.

2021-07-01  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/100778
        * tree-vect-slp.c (vect_schedule_slp_node): Do not place trapping
        vectorized ops ahead of their scalar BB.

2021-07-01  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/101044
        * config/i386/i386.md (*nabs<dwi>2_doubleword):
        New insn_and_split pattern.
        (*nabs<dwi>2_1): Ditto.
        * config/i386/i386-features.c
        (general_scalar_chain::compute_convert_gain):
        Handle (NEG (ABS (...))) RTX.  Rewrite src code
        scanner as switch statement.
        (general_scalar_chain::convert_insn):
        Handle (NEG (ABS (...))) RTX.
        (general_scalar_to_vector_candidate_p):
        Detect  (NEG (ABS (...))) RTX.  Reorder case statements
        for (AND (NOT (...) ...)) fallthrough.

2021-07-01  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101178
        * tree-vect-slp.c (slpg_vertex::materialize): Remove.
        (slpg::perm_in): Add.
        (slpg::get_perm_in): Remove.
        (slpg::get_perm_materialized): Add.
        (vect_optimize_slp): Handle VEC_PERM nodes more optimally
        during permute propagation and materialization.

2021-07-01  Jakub Jelinek  <jakub@redhat.com>

        PR debug/101266
        * dwarf2out.c (loc_list_from_tree_1): Handle COMPOUND_LITERAL_EXPR.

2021-07-01  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/94366
        * omp-low.c (lower_rec_input_clauses): Rename is_fp_and_or to
        is_truth_op, set it for TRUTH_*IF_EXPR regardless of new_var's type,
        use boolean_type_node instead of integer_type_node as NE_EXPR type.
        (lower_reduction_clauses): Likewise.

2021-06-30  Hafiz Abid Qadeer  <abidh@codesourcery.com>

        * config/gcn/gcn.c: Include dwarf2.h.
        (gcn_addr_space_debug): New function.
        (TARGET_ADDR_SPACE_DEBUG): New hook.

2021-06-30  Hafiz Abid Qadeer  <abidh@codesourcery.com>

        * common/config/gcn/gcn-common.c
        (gcn_option_optimization_table): Change OPT_fomit_frame_pointer to -O3.
        * config/gcn/gcn.c (gcn_expand_prologue): Prefer the frame pointer
        when emitting CFI.
        (gcn_expand_prologue): Prefer the frame pointer when emitting CFI.
        (gcn_frame_pointer_rqd): New function.
        (TARGET_FRAME_POINTER_REQUIRED): New hook.

2021-06-30  Hafiz Abid Qadeer  <abidh@codesourcery.com>

        * config/gcn/gcn.c (move_callee_saved_registers): Emit CFI notes for
        prologue register saves.
        (gcn_debug_unwind_info): Use UI_DWARF2.
        (gcn_dwarf_register_number): Map DWARF_LINK_REGISTER to DWARF PC.
        (gcn_dwarf_register_span): DWARF_LINK_REGISTER doesn't span.
        * config/gcn/gcn.h: (DWARF_FRAME_RETURN_COLUMN): New define.
        (DWARF_LINK_REGISTER): New define.
        (FIRST_PSEUDO_REGISTER): Increment.
        (FIXED_REGISTERS): Add entry for DWARF_LINK_REGISTER.
        (CALL_USED_REGISTERS): Likewise.
        (REGISTER_NAMES): Likewise.

2021-06-30  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101267
        * tree-vect-stmts.c (vect_check_scalar_mask): Adjust
        API and use SLP compatible interface of vect_is_simple_use.
        Reject not vectorized SLP defs for callers that do not support
        that.
        (vect_check_store_rhs): Handle masked stores and pass down
        the appropriate operator index.
        (vectorizable_call): Adjust.
        (vectorizable_store): Likewise.
        (vectorizable_load): Likewise.  Handle SLP pecularity of
        masked loads.
        (vect_is_simple_use): Remove special-casing of masked stores.

2021-06-30  Tobias Burnus  <tobias@codesourcery.com>

        * common.opt (foffload): Remove help as Driver only.
        * gcc.c (display_help): Add -foffload.

2021-06-30  Tobias Burnus  <tobias@codesourcery.com>

        * gcc.c (close_at_file, execute): Replace alloca by XALLOCAVEC.
        (check_offload_target_name): Fix splitting OFFLOAD_TARGETS into
        a candidate list; better inform no offload target is configured
        and fix hint extraction when passed target is not '\0' at [len].
        * common.opt (foffload): Add tailing '.'.
        (foffload-options): Likewise; fix flag name in the help string.

2021-06-30  prathamesh.kulkarni  <prathamesh.kulkarni@linaro.org>

        PR target/66791
        * config/arm/arm_neon.h: Move vabs intrinsics before vcage_f32.
        (vcage_f32): Gate comparison on __FAST_MATH__.
        (vcageq_f32): Likewise.
        (vcale_f32): Likewise.
        (vcaleq_f32): Likewise.
        (vcagt_f32): Likewise.
        (vcagtq_f32): Likewise.
        (vcalt_f32): Likewise.
        (vcaltq_f32): Likewise.
        (vcage_f16): Likewise.
        (vcageq_f16): Likewise.
        (vcale_f16): Likewise.
        (vcaleq_f16): Likewise.
        (vcagt_f16): Likewise.
        (vcagtq_f16): Likewise.
        (vcalt_f16): Likewise.
        (vcaltq_f16): Likewise.

2021-06-30  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101264
        * tree-vect-slp.c (vect_optimize_slp): Propagate the
        computed perm_in to all "any" permute successors
        we cannot de-duplicate immediately.

2021-06-30  liuhongt  <hongtao.liu@intel.com>

        PR target/101248
        * config/i386/sse.md
        (avx512f_sfixupimm<mode><sd_maskz_name><round_saeonly_name>):
        Refined to ..
        (avx512f_sfixupimm<mode><maskz_scalar_name><round_saeonly_name>):
        this.
        (avx512f_sfixupimm<mode>_mask<round_saeonly_name>"): Refined.
        * config/i386/subst.md (maskz_scalar): New define_subst.
        (maskz_scalar_name): New subst_attr.
        (maskz_scalar_op5): Ditto.
        (round_saeonly_maskz_scalar_op5): Ditto.
        (round_saeonly_maskz_scalar_operand5): Ditto.

2021-06-30  David Edelsohn  <dje.gcc@gmail.com>

        * config/rs6000/rs6000.c (rs6000_xcoff_section_type_flags):
        Increase code CSECT alignment to at least 32 bytes.
        * config/rs6000/xcoff.h (TEXT_SECTION_ASM_OP): Add 32 byte
        alignment designation.

2021-06-29  Sergei Trofimovich  <siarheit@google.com>

        * doc/generic.texi: Fix s/net yet/not yet/ typo.

2021-06-29  Andrew MacLeod  <amacleod@redhat.com>

        PR tree-optimization/101254
        * range-op.cc (operator_minus::op1_op2_relation_effect): Check for
        wrapping/non-wrapping when setting the result range.

2021-06-29  Andrew MacLeod  <amacleod@redhat.com>

        * value-query.cc (gimple_range_global): Allow phis.

2021-06-29  Andrew MacLeod  <amacleod@redhat.com>

        * vr-values.c (vr_values::vrp_stmt_computes_nonzero): Use stmt.
        (simplify_using_ranges::op_with_boolean_value_range_p): Add a
        statement for location context.
        (check_for_binary_op_overflow): Ditto.
        (simplify_using_ranges::get_vr_for_comparison): Ditto.
        (simplify_using_ranges::compare_name_with_value): Ditto.
        (simplify_using_ranges::compare_names): Ditto.
        (vrp_evaluate_conditional_warnv_with_ops_using_ranges): Ditto.
        (simplify_using_ranges::simplify_truth_ops_using_ranges): Ditto.
        (simplify_using_ranges::simplify_min_or_max_using_ranges): Ditto.
        (simplify_using_ranges::simplify_internal_call_using_ranges): Ditto.
        (simplify_using_ranges::two_valued_val_range_p): Ditto.
        (simplify_using_ranges::simplify): Ditto.
        * vr-values.h: Adjust prototypes.

2021-06-29  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/95046
        * config/i386/mmx.md (vec_addsubv2sf3): New insn pattern.

2021-06-29  Julian Brown  <julian@codesourcery.com>

        * config/gcn/gcn.c (gcn_init_libfuncs): New function.
        (TARGET_INIT_LIBFUNCS): Define target hook using above function.
        * config/gcn/gcn.h (UNITS_PER_WORD): Define to 8 for IN_LIBGCC2, 4
        otherwise.
        (LIBGCC2_UNITS_PER_WORD, BITS_PER_WORD): Remove definitions.
        (MAX_FIXED_MODE_SIZE): Change to 128.

2021-06-29  Julian Brown  <julian@codesourcery.com>

        * config/gcn/gcn.md (UNSPEC_FLBIT_INT): New unspec constant.
        (s_mnemonic): Add clrsb.
        (gcn_flbit<mode>_int): Add insn pattern for SImode/DImode.
        (clrsb<mode>2): Add expander for SImode/DImode.

2021-06-29  Julian Brown  <julian@codesourcery.com>

        * config/gcn/gcn.md (<su>mulsidi3, <su>mulsidi3_reg, <su>mulsidi3_imm,
        muldi3): Add patterns.

2021-06-29  Julian Brown  <julian@codesourcery.com>

        * config/gcn/gcn.md (<su>mulsi3_highpart): Change to expander.
        (<su>mulsi3_highpart_reg, <su>mulsi3_highpart_imm): New patterns.

2021-06-29  Julian Brown  <julian@codesourcery.com>

        * config/gcn/gcn.md (mulsi3): Make s_mulk_i32 variant clobber SCC.

2021-06-29  Joseph Myers  <joseph@codesourcery.com>

        * btfout.c, ctfout.c: Include "memmodel.h".

2021-06-29  Tobias Burnus  <tobias@codesourcery.com>

        * gcc.c (check_offload_target_name): Cast len argument to
        %q.*s to 'int'; avoid -Wstringop-truncation warning.

2021-06-29  Richard Biener  <rguenther@suse.de>

        * tree-vect-slp.c (vect_optimize_slp): Forward propagate
        to "any" permute nodes and relax "any" permute proapgation
        during iterative backward propagation.

2021-06-29  Tobias Burnus  <tobias@codesourcery.com>

        PR other/67300
        * common.opt (-foffload=): Update description.
        (-foffload-options=): New.
        * doc/invoke.texi (C Language Options): Document
        -foffload and -foffload-options.
        * gcc.c (check_offload_target_name): New, split off from
        handle_foffload_option.
        (check_foffload_target_names): New.
        (handle_foffload_option): Handle -foffload=default.
        (driver_handle_option): Update for -foffload-options.
        * lto-opts.c (lto_write_options): Use -foffload-options
        instead of -foffload.
        * lto-wrapper.c (merge_and_complain, append_offload_options):
        Likewise.
        * opts.c (common_handle_option): Likewise.

2021-06-29  Tobias Burnus  <tobias@codesourcery.com>

        * doc/invoke.texi (C Language Options): Sort options
        alphabetically in optlist and also the description itself.
        Remove leftover -fallow-single-precision from and add missing
        -fgnu-tm to the optlist.

2021-06-29  Richard Biener  <rguenther@suse.de>

        * tree-vect-slp.c (slpg_vertex::visited): Remove.
        (vect_slp_perms_eq): Handle -1 permutes.
        (vect_optimize_slp): Rewrite permute propagation.

2021-06-29  Jakub Jelinek  <jakub@redhat.com>

        PR c++/101210
        * match.pd ((intptr_t)x eq/ne CST to x eq/ne (typeof x) CST): Don't
        perform the optimization in GENERIC when sanitizing and x has a
        reference type.

2021-06-29  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101242
        * tree-vect-slp.c (vect_slp_build_vertices): Force-add
        PHIs with not represented initial values as leafs.

2021-06-29  Jan-Benedict Glaw  <jbglaw@getslash.de>

        * config/pdp11/pdp11.h (ASM_OUTPUT_SKIP): Fix signedness warning.
        * config/pdp11/pdp11.c (pdp11_asm_print_operand_punct_valid_p): Remove
        "register" keyword.
        (pdp11_initial_elimination_offset) Remove unused variable.
        (pdp11_cmp_length) Ditto.
        (pdp11_insn_cost): Ditto, and fix signedness warning.

2021-06-29  David Edelsohn  <dje.gcc@gmail.com>

        * btfout.c: Include tm_p.h.
        * ctfout.c: Same.

2021-06-28  Indu Bhagat  <indu.bhagat@oracle.com>

        * config/bpf/bpf.c (bpf_expand_prologue): Do not mark insns as
        frame related.
        (bpf_expand_epilogue): Likewise.
        * config/bpf/bpf.h (DWARF2_FRAME_INFO): Define to 0.
        Do not define DBX_DEBUGGING_INFO.

2021-06-28  Indu Bhagat  <indu.bhagat@oracle.com>

        * doc/invoke.texi: Document the CTF and BTF debug info options.

2021-06-28  Indu Bhagat  <indu.bhagat@oracle.com>
            David Faust  <david.faust@oracle.com>
            Jose E. Marchesi  <jose.marchesi@oracle.com>
            Weimin Pan  <weimin.pan@oracle.com>

        * Makefile.in: Add ctfc.*, ctfout.c and btfout.c files to
        GTFILES.  Add new object files.
        * common.opt: Add CTF and BTF debug info options.
        * btfout.c: New file.
        * ctfc.c: Likewise.
        * ctfc.h: Likewise.
        * ctfout.c: Likewise.
        * dwarf2ctf.c: Likewise.
        * dwarf2ctf.h: Likewise.
        * dwarf2cfi.c (dwarf2out_do_frame): Acknowledge CTF_DEBUG and
        BTF_DEBUG.
        * dwarf2out.c (dwarf2out_source_line): Likewise.
        (dwarf2out_finish): Skip emitting DWARF if CTF or BTF are to
        be generated.
        (debug_format_do_cu): New function.
        (dwarf2out_early_finish): Traverse DIEs and emit CTF/BTF for
        them if requested.
        Include dwarf2ctf.c.
        * final.c (dwarf2_debug_info_emitted_p): Acknowledge DWARF-based debug
        formats.
        * flag-types.h (enum debug_info_type): Add CTF_DEBUG and BTF_DEBUG.
        (CTF_DEBUG): New bitmask.
        (BTF_DEBUG): Likewise.
        (enum ctf_debug_info_levels): New enum.
        * gengtype.c (open_base_files): Handle ctfc.h.
        (main): Handle uint32_t type.
        * flags.h (btf_debuginfo_p): New definition.
        (dwarf_based_debuginfo_p): Likewise.
        * opts.c (debug_type_names): Add entries for CTF and BTF.
        (btf_debuginfo_p): New function.
        (dwarf_based_debuginfo_p): Likewise.
        (common_handle_option): Handle -gctfN and -gbtf options.
        (set_debug_level): Set CTF_DEBUG, BTF_DEBUG whenever appropriate.
        * toplev.c (process_options): Inform the user and ignore -gctfLEVEL if
        frontend is not C.

2021-06-28  Jose E. Marchesi  <jose.marchesi@oracle.com>

        * dwarf2out.c (AT_class): Function is no longer static.
        (AT_int): Likewise.
        (AT_unsigned): Likewise.
        (AT_loc): Likewise.
        (get_AT): Likewise.
        (get_AT_string): Likewise.
        (get_AT_flag): Likewise.
        (get_AT_unsigned): Likewise.
        (get_AT_ref): Likewise.
        (new_die_raw): Likewise.
        (lookup_decl_die): Likewise.
        (base_type_die): Likewise.
        (add_name_attribute): Likewise.
        (add_AT_int): Likewise.
        (add_AT_unsigned): Likewise.
        (add_AT_loc): Likewise.
        (dw_get_die_tag): New function.
        (dw_get_die_child): Likewise.
        (dw_get_die_sib): Likewise.
        (struct dwarf_file_data): Move from here to dwarf2out.h
        (struct dw_attr_struct): Likewise.
        * dwarf2out.h: Analogous changes.

2021-06-28  Martin Jambor  <mjambor@suse.cz>

        PR ipa/93385
        * ipa-param-manipulation.h (class ipa_param_body_adjustments): New
        members m_dead_stmts and m_dead_ssas.
        * ipa-param-manipulation.c
        (ipa_param_body_adjustments::mark_dead_statements): New function.
        (ipa_param_body_adjustments::common_initialization): Call it on
        all removed but not split parameters.
        (ipa_param_body_adjustments::ipa_param_body_adjustments): Initialize
        new mwmbers.
        (ipa_param_body_adjustments::modify_call_stmt): Remove arguments that
        are dead.
        * tree-inline.c (remap_gimple_stmt): Do not copy dead statements, reset
        dead debug statements.
        (copy_phis_for_bb): Do not copy dead PHI nodes.

2021-06-28  Martin Jambor  <mjambor@suse.cz>

        PR ipa/93385
        * symtab-clones.h (clone_info): Removed member param_adjustments.
        * ipa-param-manipulation.h: Adjust initial comment to reflect how we
        deal with pass-through splits now.
        (ipa_param_performed_split): Removed.
        (ipa_param_adjustments::modify_call): Adjusted parameters.
        (class ipa_param_body_adjustments): Adjusted parameters of
        register_replacement, modify_gimple_stmt and modify_call_stmt.
        (ipa_verify_edge_has_no_modifications): Declare.
        (ipa_edge_modifications_finalize): Declare.
        * cgraph.c (cgraph_edge::redirect_call_stmt_to_callee): Remove
        performed_splits processing, pas only edge to padjs->modify_call,
        check that call arguments were not modified if they should not have
        been.
        * cgraphclones.c (cgraph_node::create_clone): Do not copy performed
        splits.
        * ipa-param-manipulation.c (struct pass_through_split_map): New type.
        (ipa_edge_modification_info): Likewise.
        (ipa_edge_modification_sum): Likewise.
        (ipa_edge_modifications): New edge summary.
        (ipa_verify_edge_has_no_modifications): New function.
        (transitive_split_p): Removed.
        (transitive_split_map): Likewise.
        (init_transitive_splits): Likewise.
        (ipa_param_adjustments::modify_call): Adjusted to use the new edge
        summary instead of performed_splits.
        (ipa_param_body_adjustments::register_replacement): Drop dummy
        parameter, set base_index of the created ipa_param_body_replacement.
        (phi_arg_will_live_p): New function.
        (ipa_param_body_adjustments::common_initialization): Do not create
        IPA_SRA dummy decls.
        (simple_tree_swap_info): Removed.
        (remap_split_decl_to_dummy): Likewise.
        (record_argument_state_1): New function.
        (record_argument_state): Likewise.
        (ipa_param_body_adjustments::modify_call_stmt): New parameter
        orig_stmt.  Do not work with dummy decls, save necessary info about
        changes to ipa_edge_modifications.
        (ipa_param_body_adjustments::modify_gimple_stmt): New parameter
        orig_stmt, pass it to modify_call_stmt.
        (ipa_param_body_adjustments::modify_cfun_body): Adjust call to
        modify_gimple_stmt.
        (ipa_edge_modifications_finalize): New function.
        * tree-inline.c (remap_gimple_stmt): Pass original statement to
        modify_gimple_stmt.
        (copy_phis_for_bb): Do not copy dead PHI nodes.
        (expand_call_inline): Do not remap performed_splits.
        (update_clone_info): Likewise.
        * toplev.c: Include ipa-param-manipulation.h.
        (toplev::finalize): Call ipa_edge_modifications_finalize.

2021-06-28  Andrew Pinski  <apinski@marvell.com>

        * tree-ssa-phiopt.c (replace_phi_edge_with_variable): Duplicate range
        info if we're the only things setting the target PHI.
        (value_replacement): Don't duplicate range here.
        (minmax_replacement): Likewise.

2021-06-28  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101229
        * gimple-walk.c (gimple_walk_op): Handle PHIs.

2021-06-28  Martin Liska  <mliska@suse.cz>

        * config/v850/v850.c (construct_dispose_instruction): Allocate
        a bigger buffer.
        (construct_prepare_instruction): Likewise.

2021-06-28  Martin Liska  <mliska@suse.cz>

        * config/v850/v850.c (v850_option_override): Build default
        target node.
        (v850_can_inline_p): New.  Allow MASK_PROLOG_FUNCTION to be
        ignored for inlining.
        (TARGET_CAN_INLINE_P): New.

2021-06-28  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101207
        * tree-vect-slp.c (vect_optimize_slp): Do BB reduction
        permute eliding for load permutations properly.

2021-06-28  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101173
        * gimple-loop-interchange.cc
        (tree_loop_interchange::valid_data_dependences): Disallow outer
        loop dependence distance of zero.

2021-06-28  liuhongt  <hongtao.liu@intel.com>

        PR target/100648
        * config/i386/sse.md (*avx_cmp<mode>3_lt): New
        define_insn_and_split.
        (*avx_cmp<mode>3_ltint): Ditto.
        (*avx2_pcmp<mode>3_3): Ditto.
        (*avx2_pcmp<mode>3_4): Ditto.
        (*avx2_pcmp<mode>3_5): Ditto.

2021-06-28  liuhongt  <hongtao.liu@intel.com>

        * config/i386/i386-builtin.def (IX86_BUILTIN_BLENDVPD256,
        IX86_BUILTIN_BLENDVPS256, IX86_BUILTIN_PBLENDVB256,
        IX86_BUILTIN_BLENDVPD, IX86_BUILTIN_BLENDVPS,
        IX86_BUILTIN_PBLENDVB128): Replace icode with
        CODE_FOR_nothing.
        * config/i386/i386.c (ix86_gimple_fold_builtin): Fold blendv
        builtins.
        * config/i386/sse.md (*<sse4_1_avx2>_pblendvb_lt_subreg_not):
        New pre_reload splitter.

2021-06-27  Andrew Pinski  <apinski@marvell.com>

        PR middle-end/101230
        * fold-const.c (fold_ternary_loc): Check
        the return value of invert_tree_comparison.

2021-06-27  David Edelsohn  <dje.gcc@gmail.com>

        * config.gcc: Add SPDX License Identifier.
        (powerpc-ibm-aix789): Default to aix73.h.
        (powerpc-ibm-aix7.2.*.*): New stanza.
        * config/rs6000/aix72.h: Add SPDX License Identifier.
        * config/rs6000/aix73.h: New file.

2021-06-26  Jason Merrill  <jason@redhat.com>

        * except.c: #include "dwarf2.h" instead of "dwarf2out.h".

2021-06-26  Andrew Pinski  <apinski@marvell.com>

        * genmatch.c (lower_cond): Copy for_subst_vec
        for the simplify also.
        (lower): Swap the order for lower_for and lower_cond.

2021-06-26  Andrew Pinski  <apinski@marvell.com>

        * tree-ssa-phiopt.c (match_simplify_replacement): Reset
        flow senatitive info on the moved ssa set.

2021-06-26  Andrew Pinski  <apinski@marvell.com>

        * fold-const.c (fold_cond_expr_with_comparison):
        Exand arg0 into comp_code, arg00, and arg01.
        (fold_ternary_loc): Use invert_tree_comparison
        instead of fold_invert_truthvalue for the case
        where we have A CMP B ? C : A.

2021-06-25  Martin Sebor  <msebor@redhat.com>

        PR middle-end/101216
        * calls.c (maybe_warn_rdwr_sizes): Use the no_warning constant.

2021-06-25  Jeff Law  <jeffreyalaw@gmail.com>

        * config/h8300/h8300.c (select_cc_mode): Handle ASHIFTRT and LSHIFTRT.

2021-06-25  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101202
        * tree-vect-slp.c (vect_optimize_slp): Explicitely handle
        failed nodes.

2021-06-25  Richard Biener  <rguenther@suse.de>

        * tree-vect-slp-patterns.c (addsub_pattern::build): Copy
        STMT_VINFO_REDUC_DEF from the original representative.

2021-06-25  Martin Sebor  <msebor@redhat.com>

        * builtins.c (warn_string_no_nul): Replace uses of TREE_NO_WARNING,
        gimple_no_warning_p and gimple_set_no_warning with
        warning_suppressed_p, and suppress_warning.
        (c_strlen): Same.
        (maybe_warn_for_bound): Same.
        (warn_for_access): Same.
        (check_access): Same.
        (expand_builtin_strncmp): Same.
        (fold_builtin_varargs): Same.
        * calls.c (maybe_warn_nonstring_arg): Same.
        (maybe_warn_rdwr_sizes): Same.
        * cfgexpand.c (expand_call_stmt): Same.
        * cgraphunit.c (check_global_declaration): Same.
        * fold-const.c (fold_undefer_overflow_warnings): Same.
        (fold_truth_not_expr): Same.
        (fold_unary_loc): Same.
        (fold_checksum_tree): Same.
        * gimple-array-bounds.cc (array_bounds_checker::check_array_ref): Same.
        (array_bounds_checker::check_mem_ref): Same.
        (array_bounds_checker::check_addr_expr): Same.
        (array_bounds_checker::check_array_bounds): Same.
        * gimple-expr.c (copy_var_decl): Same.
        * gimple-fold.c (gimple_fold_builtin_strcpy): Same.
        (gimple_fold_builtin_strncat): Same.
        (gimple_fold_builtin_stxcpy_chk): Same.
        (gimple_fold_builtin_stpcpy): Same.
        (gimple_fold_builtin_sprintf): Same.
        (fold_stmt_1): Same.
        * gimple-ssa-isolate-paths.c (diag_returned_locals): Same.
        * gimple-ssa-nonnull-compare.c (do_warn_nonnull_compare): Same.
        * gimple-ssa-sprintf.c (handle_printf_call): Same.
        * gimple-ssa-store-merging.c (imm_store_chain_info::output_merged_store): Same.
        * gimple-ssa-warn-restrict.c (maybe_diag_overlap): Same.
        * gimple-ssa-warn-restrict.h: Adjust declarations.
        (maybe_diag_access_bounds): Replace uses of TREE_NO_WARNING,
        gimple_no_warning_p and gimple_set_no_warning with
        warning_suppressed_p, and suppress_warning.
        (check_call): Same.
        (check_bounds_or_overlap): Same.
        * gimple.c (gimple_build_call_from_tree): Same.
        * gimplify.c (gimplify_return_expr): Same.
        (gimplify_cond_expr): Same.
        (gimplify_modify_expr_complex_part): Same.
        (gimplify_modify_expr): Same.
        (gimple_push_cleanup): Same.
        (gimplify_expr): Same.
        * omp-expand.c (expand_omp_for_generic): Same.
        (expand_omp_taskloop_for_outer): Same.
        * omp-low.c (lower_rec_input_clauses): Same.
        (lower_lastprivate_clauses): Same.
        (lower_send_clauses): Same.
        (lower_omp_target): Same.
        * tree-cfg.c (pass_warn_function_return::execute): Same.
        * tree-complex.c (create_one_component_var): Same.
        * tree-inline.c (remap_gimple_op_r): Same.
        (copy_tree_body_r): Same.
        (declare_return_variable): Same.
        (expand_call_inline): Same.
        * tree-nested.c (lookup_field_for_decl): Same.
        * tree-sra.c (create_access_replacement): Same.
        (generate_subtree_copies): Same.
        * tree-ssa-ccp.c (pass_post_ipa_warn::execute): Same.
        * tree-ssa-forwprop.c (combine_cond_expr_cond): Same.
        * tree-ssa-loop-ch.c (ch_base::copy_headers): Same.
        * tree-ssa-loop-im.c (execute_sm): Same.
        * tree-ssa-phiopt.c (cond_store_replacement): Same.
        * tree-ssa-strlen.c (maybe_warn_overflow): Same.
        (handle_builtin_strcpy): Same.
        (maybe_diag_stxncpy_trunc): Same.
        (handle_builtin_stxncpy_strncat): Same.
        (handle_builtin_strcat): Same.
        * tree-ssa-uninit.c (get_no_uninit_warning): Same.
        (set_no_uninit_warning): Same.
        (uninit_undefined_value_p): Same.
        (warn_uninit): Same.
        (maybe_warn_operand): Same.
        * tree-vrp.c (compare_values_warnv): Same.
        * vr-values.c (vr_values::extract_range_for_var_from_comparison_expr): Same.
        (test_for_singularity): Same.
        * gimple.h (warning_suppressed_p): New function.
        (suppress_warning): Same.
        (copy_no_warning): Same.
        (gimple_set_block): Call gimple_set_location.
        (gimple_set_location): Call copy_warning.

2021-06-25  Martin Sebor  <msebor@redhat.com>

        * tree.h (warning_suppressed_at, copy_warning,
        warning_suppressed_p, suppress_warning): New functions.

2021-06-25  Martin Sebor  <msebor@redhat.com>

        * Makefile.in (OBJS-libcommon): Add diagnostic-spec.o.
        * gengtype.c (open_base_files): Add diagnostic-spec.h.
        * diagnostic-spec.c: New file.
        * diagnostic-spec.h: New file.
        * tree.h (no_warning, all_warnings, suppress_warning_at): New
        declarations.
        * warning-control.cc: New file.

2021-06-25  liuhongt  <hongtao.liu@intel.com>

        PR target/101185
        * config/i386/i386.c (x86_order_regs_for_local_alloc):
        Revert r12-1669.

2021-06-24  Andrew MacLeod  <amacleod@redhat.com>

        PR tree-optimization/101189
        * gimple-range-fold.cc (fold_using_range::range_of_range_op): Pass
        LHS range of condition to postfold routine.
        (fold_using_range::postfold_gcond_edges): Only process the TRUE or
        FALSE edge if the LHS range supports it being taken.
        * gimple-range-fold.h (postfold_gcond_edges): Add range parameter.

2021-06-24  Andrew MacLeod  <amacleod@redhat.com>

        * value-relation.cc (equiv_oracle::dump): Do not dump NULL blocks.
        (relation_oracle::find_relation_block): Check correct bitmap.
        (relation_oracle::dump): Do not dump NULL blocks.

2021-06-24  Andrew MacLeod  <amacleod@redhat.com>

        * gimple-range-cache.cc (ranger_cache::propagate_cache): Call
        range_on_edge instead of manually calculating.

2021-06-24  Andrew MacLeod  <amacleod@redhat.com>

        * range-op.cc: Fix comment.

2021-06-24  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/89021
        * config/i386/i386-expand.c (ix86_expand_sse_unpack):
        Handle V8QI and V4HI modes.
        * config/i386/mmx.md (sse4_1_<any_extend:code>v4qiv4hi2):
        New insn pattern.
        (sse4_1_<any_extend:code>v4qiv4hi2): Ditto.
        (mmxpackmode): New mode attribute.
        (vec_pack_trunc_<mmxpackmode:mode>): New expander.
        (mmxunpackmode): New mode attribute.
        (vec_unpacks_lo_<mmxunpackmode:mode>): New expander.
        (vec_unpacks_hi_<mmxunpackmode:mode>): Ditto.
        (vec_unpacku_lo_<mmxunpackmode:mode>): Ditto.
        (vec_unpacku_hi_<mmxunpackmode:mode>): Ditto.
        * config/i386/i386.md (extsuffix): Move from ...
        * config/i386/sse.md: ... here.

2021-06-24  Eric Botcazou  <ebotcazou@adacore.com>

        * dwarf2out.c (dwarf2out_assembly_start): Emit .file 0 marker here..
        (dwarf2out_finish): ...instead of here.

2021-06-24  Eric Botcazou  <ebotcazou@adacore.com>

        * configure.ac (--gdwarf-5 option): Use objdump instead of readelf.
        (working --gdwarf-4/--gdwarf-5 for all sources): Likewise.
        (--gdwarf-4 not refusing generated .debug_line): Adjust for Windows.
        * configure: Regenerate.

2021-06-24  Richard Biener  <rguenther@suse.de>

        * config/i386/sse.md (vec_addsubv4df3, vec_addsubv2df3,
        vec_addsubv8sf3, vec_addsubv4sf3): Merge into ...
        (vec_addsub<mode>3): ... using a new addsub_cst mode attribute.

2021-06-24  Richard Biener  <rguenther@suse.de>

        * config/i386/sse.md (avx_addsubv4df3): Rename to
        vec_addsubv4df3.
        (avx_addsubv8sf3): Rename to vec_addsubv8sf3.
        (sse3_addsubv2df3): Rename to vec_addsubv2df3.
        (sse3_addsubv4sf3): Rename to vec_addsubv4sf3.
        * config/i386/i386-builtin.def: Adjust.
        * internal-fn.def (VEC_ADDSUB): New internal optab fn.
        * optabs.def (vec_addsub_optab): New optab.
        * tree-vect-slp-patterns.c (class addsub_pattern): New.
        (slp_patterns): Add addsub_pattern.
        * tree-vect-slp.c (vect_optimize_slp): Disable propagation
        across CFN_VEC_ADDSUB.
        * tree-vectorizer.h (vect_pattern::vect_pattern): Make
        m_ops optional.
        * doc/md.texi (vec_addsub<mode>3): Document.

2021-06-24  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/101170
        * df-scan.c (df_ref_record): For paradoxical big-endian SUBREGs
        where regno + subreg_regno_offset wraps around use 0 as starting
        regno.

2021-06-24  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/101172
        * stor-layout.c (finish_bitfield_representative): If nextf has
        error_mark_node type, set repr type to error_mark_node too.

2021-06-24  Ilya Leoshkevich  <iii@linux.ibm.com>

        * config/s390/s390.c (s390_function_profiler): Ignore labelno
        parameter.
        * config/s390/s390.h (NO_PROFILE_COUNTERS): Define.

2021-06-24  Richard Biener  <rguenther@suse.de>

        * tree-vect-slp.c (vect_optimize_slp): Do not propagate
        across operations that have different semantics on different
        lanes.

2021-06-24  Jakub Jelinek  <jakub@redhat.com>

        * tree.h (OMP_CLAUSE_MAP_IN_REDUCTION): Document meaning for OpenMP.
        * gimplify.c (gimplify_scan_omp_clauses): For OpenMP map clauses
        with OMP_CLAUSE_MAP_IN_REDUCTION flag partially defer gimplification
        of non-decl OMP_CLAUSE_DECL.  For OMP_CLAUSE_IN_REDUCTION on
        OMP_TARGET user outer_ctx instead of ctx for placeholders and
        initializer/combiner gimplification.
        * omp-low.c (scan_sharing_clauses): Handle OMP_CLAUSE_MAP_IN_REDUCTION
        on target constructs.
        (lower_rec_input_clauses): Likewise.
        (lower_omp_target): Likewise.
        * omp-expand.c (expand_omp_target): Temporarily ignore nowait clause
        on target if in_reduction is present.

2021-06-24  Kewen Lin  <linkw@linux.ibm.com>

        * tree-predcom.c (class pcom_worker): New class.
        (release_chain): Renamed to...
        (pcom_worker::release_chain): ...this.
        (release_chains): Renamed to...
        (pcom_worker::release_chains): ...this.
        (aff_combination_dr_offset): Renamed to...
        (pcom_worker::aff_combination_dr_offset): ...this.
        (determine_offset): Renamed to...
        (pcom_worker::determine_offset): ...this.
        (class comp_ptrs): New class.
        (split_data_refs_to_components): Renamed to...
        (pcom_worker::split_data_refs_to_components): ...this,
        and update with class comp_ptrs.
        (suitable_component_p): Renamed to...
        (pcom_worker::suitable_component_p): ...this.
        (filter_suitable_components): Renamed to...
        (pcom_worker::filter_suitable_components): ...this.
        (valid_initializer_p): Renamed to...
        (pcom_worker::valid_initializer_p): ...this.
        (find_looparound_phi): Renamed to...
        (pcom_worker::find_looparound_phi): ...this.
        (add_looparound_copies): Renamed to...
        (pcom_worker::add_looparound_copies): ...this.
        (determine_roots_comp): Renamed to...
        (pcom_worker::determine_roots_comp): ...this.
        (determine_roots): Renamed to...
        (pcom_worker::determine_roots): ...this.
        (single_nonlooparound_use): Renamed to...
        (pcom_worker::single_nonlooparound_use): ...this.
        (remove_stmt): Renamed to...
        (pcom_worker::remove_stmt): ...this.
        (execute_pred_commoning_chain): Renamed to...
        (pcom_worker::execute_pred_commoning_chain): ...this.
        (execute_pred_commoning): Renamed to...
        (pcom_worker::execute_pred_commoning): ...this.
        (struct epcc_data): New member worker.
        (execute_pred_commoning_cbck): Call execute_pred_commoning
        with pcom_worker pointer.
        (find_use_stmt): Renamed to...
        (pcom_worker::find_use_stmt): ...this.
        (find_associative_operation_root): Renamed to...
        (pcom_worker::find_associative_operation_root): ...this.
        (find_common_use_stmt): Renamed to...
        (pcom_worker::find_common_use_stmt): ...this.
        (combinable_refs_p): Renamed to...
        (pcom_worker::combinable_refs_p): ...this.
        (reassociate_to_the_same_stmt): Renamed to...
        (pcom_worker::reassociate_to_the_same_stmt): ...this.
        (stmt_combining_refs): Renamed to...
        (pcom_worker::stmt_combining_refs): ...this.
        (combine_chains): Renamed to...
        (pcom_worker::combine_chains): ...this.
        (try_combine_chains): Renamed to...
        (pcom_worker::try_combine_chains): ...this.
        (prepare_initializers_chain): Renamed to...
        (pcom_worker::prepare_initializers_chain): ...this.
        (prepare_initializers): Renamed to...
        (pcom_worker::prepare_initializers): ...this.
        (prepare_finalizers_chain): Renamed to...
        (pcom_worker::prepare_finalizers_chain): ...this.
        (prepare_finalizers): Renamed to...
        (pcom_worker::prepare_finalizers): ...this.
        (tree_predictive_commoning_loop): Renamed to...
        (pcom_worker::tree_predictive_commoning_loop): ...this, adjust
        some calls and remove some cleanup code.
        (tree_predictive_commoning): Adjusted to use pcom_worker instance.
        (static variable looparound_phis): Remove.
        (static variable name_expansions): Remove.

2021-06-24  Richard Biener  <rguenther@suse.de>

        * tree-vect-slp.c (slpg_vertex): New struct.
        (vect_slp_build_vertices): Adjust.
        (vect_optimize_slp): Likewise.  Maintain an outgoing permute
        and a materialized one.

2021-06-24  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101105
        * tree-vect-data-refs.c (vect_prune_runtime_alias_test_list):
        Only ignore steps when they are equal or scalar order is preserved.

2021-06-24  liuhongt  <hongtao.liu@intel.com>

        PR target/98434
        * config/i386/i386-expand.c (ix86_expand_vec_interleave):
        Adjust comments for ix86_expand_vecop_qihi2.
        (ix86_expand_vecmul_qihi): Renamed to ..
        (ix86_expand_vecop_qihi2): Adjust function prototype to
        support shift operation, add static to definition.
        (ix86_expand_vec_shift_qihi_constant): Add static to definition.
        (ix86_expand_vecop_qihi): Call ix86_expand_vecop_qihi2 and
        ix86_expand_vec_shift_qihi_constant.
        * config/i386/i386-protos.h (ix86_expand_vecmul_qihi): Deleted.
        (ix86_expand_vec_shift_qihi_constant): Deleted.
        * config/i386/sse.md (VI12_256_512_AVX512VL): New mode
        iterator.
        (mulv8qi3): Call ix86_expand_vecop_qihi directly, add
        condition TARGET_64BIT.
        (mul<mode>3): Ditto.
        (<insn><mode>3): Ditto.
        (vlshr<mode>3): Extend to support avx512 vlshr.
        (v<insn><mode>3): New expander for
        vashr/vlshr/vashl.
        (v<insn>v8qi3): Ditto.
        (vashrv8hi3<mask_name>): Renamed to ..
        (vashr<mode>3): And extend to support V16QImode for avx512.
        (vashrv16qi3): Deleted.
        (vashrv2di3<mask_name>): Extend expander to support avx512
        instruction.

2021-06-23  Dimitar Dimitrov  <dimitar@dinux.eu>

        * doc/lto.texi (Design Overview): Update that slim objects are
        the default.

2021-06-23  Aaron Sawdey  <acsawdey@linux.ibm.com>

        * config/rs6000/rs6000-cpus.def: Take OPTION_MASK_PCREL_OPT out
        of OTHER_POWER10_MASKS so it will not be enabled by default.

2021-06-23  Richard Biener  <rguenther@suse.de>
            Martin Jambor  <mjambor@suse.cz>

        * tree-inline.c (setup_one_parameter): Set TREE_READONLY of the
        param replacement unconditionally.  Adjust comment.

2021-06-23  Andrew MacLeod  <amacleod@redhat.com>

        * Makefile.in (OBJS): Add gimple-range-fold.o
        * gimple-range-fold.cc: New.
        * gimple-range-fold.h: New.
        * gimple-range-gori.cc (gimple_range_calc_op1): Move to here.
        (gimple_range_calc_op2): Ditto.
        * gimple-range-gori.h: Move prototypes to here.
        * gimple-range.cc: Adjust include files.
        (fur_source:fur_source): Relocate to gimple-range-fold.cc.
        (fur_source::get_operand): Ditto.
        (fur_source::get_phi_operand): Ditto.
        (fur_source::query_relation): Ditto.
        (fur_source::register_relation): Ditto.
        (class fur_edge): Ditto.
        (fur_edge::fur_edge): Ditto.
        (fur_edge::get_operand): Ditto.
        (fur_edge::get_phi_operand): Ditto.
        (fur_stmt::fur_stmt): Ditto.
        (fur_stmt::get_operand): Ditto.
        (fur_stmt::get_phi_operand): Ditto.
        (fur_stmt::query_relation): Ditto.
        (class fur_depend): Relocate to gimple-range-fold.h.
        (fur_depend::fur_depend): Relocate to gimple-range-fold.cc.
        (fur_depend::register_relation): Ditto.
        (fur_depend::register_relation): Ditto.
        (class fur_list): Ditto.
        (fur_list::fur_list): Ditto.
        (fur_list::get_operand): Ditto.
        (fur_list::get_phi_operand): Ditto.
        (fold_range): Ditto.
        (adjust_pointer_diff_expr): Ditto.
        (gimple_range_adjustment): Ditto.
        (gimple_range_base_of_assignment): Ditto.
        (gimple_range_operand1): Ditto.
        (gimple_range_operand2): Ditto.
        (gimple_range_calc_op1): Relocate to gimple-range-gori.cc.
        (gimple_range_calc_op2): Ditto.
        (fold_using_range::fold_stmt): Relocate to gimple-range-fold.cc.
        (fold_using_range::range_of_range_op): Ditto.
        (fold_using_range::range_of_address): Ditto.
        (fold_using_range::range_of_phi): Ditto.
        (fold_using_range::range_of_call): Ditto.
        (fold_using_range::range_of_builtin_ubsan_call): Ditto.
        (fold_using_range::range_of_builtin_call): Ditto.
        (fold_using_range::range_of_cond_expr): Ditto.
        (fold_using_range::range_of_ssa_name_with_loop_info): Ditto.
        (fold_using_range::relation_fold_and_or): Ditto.
        (fold_using_range::postfold_gcond_edges): Ditto.
        * gimple-range.h: Add gimple-range-fold.h to include files. Change
        GIMPLE_RANGE_STMT_H to GIMPLE_RANGE_H.
        (gimple_range_handler): Relocate to gimple-range-fold.h.
        (gimple_range_ssa_p): Ditto.
        (range_compatible_p): Ditto.
        (class fur_source): Ditto.
        (class fur_stmt): Ditto.
        (class fold_using_range): Ditto.
        (gimple_range_calc_op1): Relocate to gimple-range-gori.h
        (gimple_range_calc_op2): Ditto.

2021-06-23  Andrew MacLeod  <amacleod@redhat.com>

        PR tree-optimization/101148
        PR tree-optimization/101014
        * gimple-range-cache.cc (ranger_cache::ranger_cache): Adjust.
        (ranger_cache::~ranger_cache): Adjust.
        (ranger_cache::block_range): Check if propagation disallowed.
        (ranger_cache::propagate_cache): Disallow propagation if new value
        can't be stored properly.
        * gimple-range-cache.h (ranger_cache::m_propfail): New member.

2021-06-23  Andrew MacLeod  <amacleod@redhat.com>

        * gimple-range-cache.cc (class ssa_block_ranges): Adjust prototype.
        (sbr_vector::set_bb_range): Return true.
        (class sbr_sparse_bitmap): Adjust.
        (sbr_sparse_bitmap::set_bb_range): Return value.
        (block_range_cache::set_bb_range): Return value.
        (ranger_cache::propagate_cache): Use return value to print msg.
        * gimple-range-cache.h (class block_range_cache): Adjust.

2021-06-23  Andrew MacLeod  <amacleod@redhat.com>

        * gimple-range.cc (dump_bb): Use range_on_edge from the cache.

2021-06-23  Jeff Law  <jeffreyalaw@gmail.com>

        * config/h8300/logical.md (<code><mode>3<ccnz>): Use <cczn>
        so this pattern can be used for test/compare removal.  Pass
        current insn to compute_logical_op_length and output_logical_op.
        * config/h8300/h8300.c (compute_logical_op_cc): Remove.
        (h8300_and_costs): Add argument to compute_logical_op_length.
        (output_logical_op): Add new argument.  Use it to determine if the
        condition codes are used and adjust the output accordingly.
        (compute_logical_op_length): Add new argument and update length
        computations when condition codes are used.
        * config/h8300/h8300-protos.h (compute_logical_op_length): Update
        prototype.
        (output_logical_op): Likewise.

2021-06-23  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/89021
        * config/i386/i386-expand.c (expand_vec_perm_pshufb):
        Handle 64bit modes for TARGET_XOP.  Use indirect gen_* functions.
        * config/i386/mmx.md (mmx_ppermv64): New insn pattern.
        * config/i386/i386.md (unspec): Move UNSPEC_XOP_PERMUTE from ...
        * config/i386/sse.md (unspec): ... here.

2021-06-23  Martin Liska  <mliska@suse.cz>

        PR target/98636
        * optc-save-gen.awk: Put back arm_fp16_format to
        checked_options.

2021-06-23  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/101175
        * config/i386/i386.md (bsr_rex64): Add zero-flag setting RTX.
        (bsr): Ditto.
        (*bsrhi): Remove.
        (clz<mode>2): Update RTX pattern for additions.

2021-06-23  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/101167
        * omp-low.c (lower_omp_regimplify_p): Regimplify also PARM_DECLs
        and RESULT_DECLs that have DECL_HAS_VALUE_EXPR_P set.

2021-06-22  Sergei Trofimovich  <siarheit@google.com>

        * doc/rtl.texi: drop unbalanced parenthesis.

2021-06-22  Richard Biener  <rguenther@suse.de>

        PR middle-end/101156
        * gimplify.c (gimplify_expr): Remove premature incorrect
        optimization.

2021-06-22  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/101159
        * tree-vect-patterns.c (vect_recog_popcount_pattern): Fix some
        comment typos.

2021-06-22  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/101160
        * function.c (assign_parms): For decl_result with TYPE_EMPTY_P type
        clear crtl->return_rtx instead of keeping it referencing a pseudo.

2021-06-22  Jakub Jelinek  <jakub@redhat.com>
            Andrew Pinski  <apinski@marvell.com>

        PR tree-optimization/101162
        * fold-const.c (range_check_type): Handle OFFSET_TYPE like pointer
        types.

2021-06-22  Andrew MacLeod  <amacleod@redhat.com>

        * range-op.cc (range_relational_tests): New.
        (range_op_tests): Call range_relational_tests.

2021-06-22  Andrew MacLeod  <amacleod@redhat.com>

        * range-op.cc (operator_cast::lhs_op1_relation): New.
        (operator_identity::lhs_op1_relation): Mew.

2021-06-22  Andrew MacLeod  <amacleod@redhat.com>

        * range-op.cc (operator_minus::op1_op2_relation_effect): New.

2021-06-22  Andrew MacLeod  <amacleod@redhat.com>

        * range-op.cc (operator_plus::lhs_op1_relation): New.
        (operator_plus::lhs_op2_relation): New.

2021-06-22  Andrew MacLeod  <amacleod@redhat.com>

        * gimple-range-cache.cc (ranger_cache::ranger_cache): Create a
        relation_oracle if dominators exist.
        (ranger_cache::~ranger_cache): Dispose of oracle.
        (ranger_cache::dump_bb): Dump oracle.
        * gimple-range.cc (fur_source::fur_source): New.
        (fur_source::get_operand): Use mmeber query.
        (fur_source::get_phi_operand): Use member_query.
        (fur_source::query_relation): New.
        (fur_source::register_dependency): Delete.
        (fur_source::register_relation): New.
        (fur_edge::fur_edge): Adjust.
        (fur_edge::get_phi_operand): Fix comment.
        (fur_edge::query): Delete.
        (fur_stmt::fur_stmt): Adjust.
        (fur_stmt::query): Delete.
        (fur_depend::fur_depend): Adjust.
        (fur_depend::register_relation): New.
        (fur_depend::register_relation): New.
        (fur_list::fur_list): Adjust.
        (fur_list::get_operand): Use member query.
        (fold_using_range::range_of_range_op): Process and query relations.
        (fold_using_range::range_of_address): Adjust dependency call.
        (fold_using_range::range_of_phi): Ditto.
        (gimple_ranger::gimple_ranger): New.  Use ranger_ache oracle.
        (fold_using_range::relation_fold_and_or): New.
        (fold_using_range::postfold_gcond_edges): New.
        * gimple-range.h (class gimple_ranger): Adjust.
        (class fur_source): Adjust members.
        (class fur_stmt): Ditto.
        (class fold_using_range): Ditto.

2021-06-22  Andrew MacLeod  <amacleod@redhat.com>

        * range-op.cc (range_operator::wi_fold): Apply relation effect.
        (range_operator::fold_range): Adjust and apply relation effect.
        (*::fold_range): Add relation parameters.
        (*::op1_range): Ditto.
        (*::op2_range): Ditto.
        (range_operator::lhs_op1_relation): New.
        (range_operator::lhs_op2_relation): New.
        (range_operator::op1_op2_relation): New.
        (range_operator::op1_op2_relation_effect): New.
        (relop_early_resolve): New.
        (operator_equal::op1_op2_relation): New.
        (operator_equal::fold_range): Call relop_early_resolve.
        (operator_not_equal::op1_op2_relation): New.
        (operator_not_equal::fold_range): Call relop_early_resolve.
        (operator_lt::op1_op2_relation): New.
        (operator_lt::fold_range): Call relop_early_resolve.
        (operator_le::op1_op2_relation): New.
        (operator_le::fold_range): Call relop_early_resolve.
        (operator_gt::op1_op2_relation): New.
        (operator_gt::fold_range): Call relop_early_resolve.
        (operator_ge::op1_op2_relation): New.
        (operator_ge::fold_range): Call relop_early_resolve.
        * range-op.h (class range_operator): Adjust parameters and methods.

2021-06-22  Andrew MacLeod  <amacleod@redhat.com>

        * Makefile.in (OBJS): Add value-relation.o.
        * gimple-range.h: Adjust include files.
        * tree-data-ref.c: Adjust include file order.
        * value-query.cc (range_query::get_value_range): Default to no oracle.
        (range_query::query_relation): New.
        (range_query::query_relation): New.
        * value-query.h (class range_query): Adjust.
        * value-relation.cc: New.
        * value-relation.h: New.

2021-06-22  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101151
        * tree-ssa-sink.c (statement_sink_location): Expand irreducible
        region check.

2021-06-22  Jojo R  <rjiejie@linux.alibaba.com>

        * config/riscv/riscv.c (thead_c906_tune_info): New.
        (riscv_tune_info_table): Use new tune.

2021-06-22  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101158
        * tree-vect-slp.c (vect_build_slp_tree_1): Move same operand
        checking after checking for matching operation.

2021-06-22  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101159
        * tree-vect-patterns.c (vect_recog_popcount_pattern): Add
        missing NULL vectype check.

2021-06-22  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101154
        * tree-vect-slp.c (vect_build_slp_tree_2): Fix out-of-bound access.

2021-06-22  Jakub Jelinek  <jakub@redhat.com>

        PR target/11877
        * config/i386/i386-protos.h (ix86_last_zero_store_uid): Declare.
        * config/i386/i386-expand.c (ix86_last_zero_store_uid): New variable.
        * config/i386/i386.c (ix86_expand_prologue): Clear it.
        * config/i386/i386.md (peephole2s for 1/2/4 stores of const0_rtx):
        Remove "" from match_operand.  Emit new insns using emit_move_insn and
        set ix86_last_zero_store_uid to INSN_UID of the last store.
        Add peephole2s for 1/2/4 stores of const0_rtx following previous
        successful peep2s.

2021-06-22  Martin Liska  <mliska@suse.cz>

        * auto-profile.c (AUTO_PROFILE_VERSION): Bump as string format
        was changed.

2021-06-22  Martin Liska  <mliska@suse.cz>

        * gcov-io.h: Remove padding entries.

2021-06-22  liuhongt  <hongtao.liu@intel.com>

        PR tree-optimization/97770
        * tree-vect-patterns.c (vect_recog_popcount_pattern):
        New.
        (vect_recog_func vect_vect_recog_func_ptrs): Add new pattern.

2021-06-22  liuhongt  <hongtao.liu@intel.com>

        PR target/100267
        * config/i386/i386-builtin.def (BDESC): Adjust builtin name.
        * config/i386/sse.md (<avx512>_expand<mode>_mask): Rename to ..
        (expand<mode>_mask): this ..
        (*expand<mode>_mask): New pre_reload splitter to transform
        v{,p}expand* to vmov* when mask is zero, all ones, or has all
        ones in it's lower part, otherwise still generate
        v{,p}expand*.

2021-06-22  liuhongt  <hongtao.liu@intel.com>

        PR target/100310
        * config/i386/i386-expand.c
        (ix86_expand_special_args_builtin): Keep constm1_operand only
        if it satisfies insn's operand predicate.

2021-06-21  Jason Merrill  <jason@redhat.com>

        PR target/88529
        * df-scan.c (df_ref_record): Check that regno < endregno.
        * function.c (assign_parms, expand_function_end): Do nothing with a
        TYPE_EMPTY_P result.

2021-06-21  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101120
        * tree-vect-data-refs.c (bump_vector_ptr): Fold the
        built increment.
        * tree-vect-slp.c (vect_transform_slp_perm_load): Add
        DR chain DCE capability.
        * tree-vectorizer.h (vect_transform_slp_perm_load): Adjust.
        * tree-vect-stmts.c (vectorizable_load): Remove unused
        loads in the DR chain for SLP.

2021-06-21  Jakub Jelinek  <jakub@redhat.com>

        PR inline-asm/100785
        * gimplify.c (gimplify_asm_expr): Don't diagnose errors if
        output or input operands were already error_mark_node.
        * cfgexpand.c (expand_asm_stmt): If errors are emitted,
        remove all inputs, outputs and clobbers from the asm and
        set template to "".

2021-06-21  prathamesh.kulkarni  <prathamesh.kulkarni@linaro.org>

        * config/arm/arm_neon.h (vceq_s8): Replace builtin with __a == __b.
        (vceq_s16): Likewise.
        (vceq_s32): Likewise.
        (vceq_u8): Likewise.
        (vceq_u16): Likewise.
        (vceq_u32): Likewise.
        (vceq_p8): Likewise.
        (vceqq_s8): Likewise.
        (vceqq_s16): Likewise.
        (vceqq_s32): Likewise.
        (vceqq_u8): Likewise.
        (vceqq_u16): Likewise.
        (vceqq_u32): Likewise.
        (vceqq_p8): Likewise.
        (vceq_f32): Gate __a == __b on __FAST_MATH__.
        (vceqq_f32): Likewise.
        (vceq_f16): Likewise.
        (vceqq_f16): Likewise.

2021-06-21  prathamesh.kulkarni  <prathamesh.kulkarni@linaro.org>

        PR target/97906
        * config/arm/iterators.md (NEON_VACMP): Remove.
        * config/arm/neon.md (neon_vca<cmp_op><mode>): Use GLTE instead of GTGE
        iterator.
        (neon_vca<cmp_op><mode>_insn): Likewise.
        (neon_vca<cmp_op_unsp><mode>_insn_unspec): Use NEON_VAGLTE instead of
        NEON_VACMP.

2021-06-21  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101121
        * tree-vect-slp.c (vect_build_slp_tree_2): To not fail fatally
        when we just lack a stmt with the desired op when doing permutation.
        (vect_build_slp_tree): When caching a failed SLP build attempt
        assert that at least one lane is marked as not matching.

2021-06-21  liuhongt  <hongtao.liu@intel.com>

        PR target/101142
        * config/i386/i386.md: (*anddi_1): Disparage slightly the mask
        register alternative.
        (*and<mode>_1): Ditto.
        (*andqi_1): Ditto.
        (*andn<mode>_1): Ditto.
        (*<code><mode>_1): Ditto.
        (*<code>qi_1): Ditto.
        (*one_cmpl<mode>2_1): Ditto.
        (*one_cmplsi2_1_zext): Ditto.
        (*one_cmplqi2_1): Ditto.
        * config/i386/i386.c (x86_order_regs_for_local_alloc): Change
        the order of mask registers to be before general registers.

2021-06-21  Roger Sayle  <roger@nextmovesoftware.com>

        PR target/11877
        * config/i386/i386.md: New define_peephole2s to shrink writing
        1, 2 or 4 consecutive zeros to memory when optimizing for size.

2021-06-18  Jeff Law  <jeffreyalaw@gmail.com>

        * config/h8300/h8300.c (h8300_select_cc_mode): Handle SYMBOL_REF.
        * config/h8300/logical.md (<code><mode>3 logcial expander): Generate
        more efficient code when the source can be trivially simplified.

2021-06-18  Andrew MacLeod  <amacleod@redhat.com>

        * gimple-range-cache.cc (ranger_cache::range_of_def):  Calculate
        a range if global is not available.
        (ranger_cache::entry_range): Fallback to range_of_def.
        * gimple-range-cache.h (range_of_def): Adjust prototype.

2021-06-18  Andrew MacLeod  <amacleod@redhat.com>

        PR tree-optimization/101014
        * gimple-range-cache.cc (ranger_cache::ranger_cache): Remove poor
        value list.
        (ranger_cache::~ranger_cache): Ditto.
        (ranger_cache::enable_new_values): Delete.
        (ranger_cache::push_poor_value): Delete.
        (ranger_cache::range_of_def): Remove poor value processing.
        (ranger_cache::entry_range): Ditto.
        (ranger_cache::fill_block_cache): Ditto.
        * gimple-range-cache.h (class ranger_cache): Remove poor value members.
        * gimple-range.cc (gimple_ranger::range_of_expr): Remove call.
        * gimple-range.h (class gimple_ranger): Adjust.

2021-06-18  Srinath Parvathaneni  <srinath.parvathaneni@arm.com>

        PR target/100856
        * common/config/arm/arm-common.c (arm_canon_arch_option_1): New function
        derived from arm_canon_arch.
        (arm_canon_arch_option): Call it.
        (arm_canon_arch_multilib_option): New function.
        * config/arm/arm-cpus.in (IGNORE_FOR_MULTILIB): New fgroup.
        * config/arm/arm.h (arm_canon_arch_multilib_option): New prototype.
        (CANON_ARCH_MULTILIB_SPEC_FUNCTION): New macro.
        (MULTILIB_ARCH_CANONICAL_SPECS): New macro.
        (DRIVER_SELF_SPECS): Add MULTILIB_ARCH_CANONICAL_SPECS.
        * config/arm/arm.opt (mlibarch): New option.
        * config/arm/t-rmprofile (MULTILIB_MATCHES): For armv8*-m, replace use
        of march on RHS with mlibarch.

2021-06-18  Marcel Vollweiler  <marcel@codesourcery.com>

        * config.in: Regenerate.
        * config/gcn/gcn.c (print_operand_address): Fix for global_load assembler
        functions.
        * configure: Regenerate.
        * configure.ac: Fix for global_load assembler functions.

2021-06-18  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101112
        * tree-vect-slp.c (vect_slp_linearize_chain): Fix condition
        to lookup a pattern stmt def.

2021-06-18  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/101062
        * stor-layout.c (finish_bitfield_layout): Don't add bitfield
        representatives in QUAL_UNION_TYPE.

2021-06-18  Andrew Pinski  <apinski@marvell.com>

        * tree-ssa-phiopt.c (replace_phi_edge_with_variable):
        Add counting of how many times it is done.
        (factor_out_conditional_conversion): Likewise.
        (match_simplify_replacement): Likewise.
        (value_replacement): Likewise.
        (spaceship_replacement): Likewise.
        (cond_store_replacement): Likewise.
        (cond_if_else_store_replacement_1): Likewise.
        (hoist_adjacent_loads): Likewise.

2021-06-18  Andrew Pinski  <apinski@marvell.com>

        * tree-cfg.c (verify_gimple_assign_unary): Reject point and offset
        types on NEGATE_EXPR, ABS_EXPR, BIT_NOT_EXPR, PAREN_EXPR and CNONJ_EXPR.
        (verify_gimple_assign_binary): Reject point and offset types on
        MULT_EXPR, MULT_HIGHPART_EXPR, TRUNC_DIV_EXPR, CEIL_DIV_EXPR,
        FLOOR_DIV_EXPR, ROUND_DIV_EXPR, TRUNC_MOD_EXPR, CEIL_MOD_EXPR,
        FLOOR_MOD_EXPR, ROUND_MOD_EXPR, RDIV_EXPR, and EXACT_DIV_EXPR.

2021-06-18  Michael Meissner  <meissner@linux.ibm.com>

        * config/rs6000/rs6000.c (rs6000_emit_minmax): Add support for ISA
        3.1 IEEE 128-bit floating point xsmaxcqp/xsmincqp instructions.
        * config/rs6000/rs6000.md (s<minmax><mode>3, IEEE128 iterator):
        New insns.

2021-06-17  Aaron Sawdey  <acsawdey@linux.ibm.com>

        * config/rs6000/genfusion.pl (gen_logical_addsubf): Add
        earlyclobber to alts 0/1.
        (gen_addadd): Add earlyclobber to alts 0/1.
        * config/rs6000/fusion.md: Regenerate file.

2021-06-17  Trevor Saunders  <tbsaunde@tbsaunde.org>

        * cfgloopanal.c (get_loop_hot_path): Make path an auto_vec.

2021-06-17  Andrew MacLeod  <amacleod@redhat.com>

        * gimple-range-cache.cc: Comment cleanups.
        * gimple-range-gori.cc: Comment cleanups.
        * gimple-range.cc: Comment/spacing cleanups
        * value-range.h: Comment cleanups.

2021-06-17  H.J. Lu  <hjl.tools@gmail.com>

        PR target/100704
        * calls.c (expand_call): Replace PUSH_ARGS with
        targetm.calls.push_argument (0).
        (emit_library_call_value_1): Likewise.
        * defaults.h (PUSH_ARGS): Removed.
        (PUSH_ARGS_REVERSED): Replace PUSH_ARGS with
        targetm.calls.push_argument (0).
        * expr.c (block_move_libcall_safe_for_call_parm): Likewise.
        (emit_push_insn): Pass the number bytes to push to
        targetm.calls.push_argument and pass 0 if ARGS_ADDR is 0.
        * hooks.c (hook_bool_uint_true): New.
        * hooks.h (hook_bool_uint_true): Likewise.
        * rtlanal.c (nonzero_bits1): Replace PUSH_ARGS with
        targetm.calls.push_argument (0).
        * target.def (push_argument): Add a targetm.calls hook.
        * targhooks.c (default_push_argument): New.
        * targhooks.h (default_push_argument): Likewise.
        * config/bpf/bpf.h (PUSH_ARGS): Removed.
        * config/cr16/cr16.c (TARGET_PUSH_ARGUMENT): New.
        * config/cr16/cr16.h (PUSH_ARGS): Removed.
        * config/i386/i386.c (ix86_push_argument): New.
        (TARGET_PUSH_ARGUMENT): Likewise.
        * config/i386/i386.h (PUSH_ARGS): Removed.
        * config/m32c/m32c.c (TARGET_PUSH_ARGUMENT): New.
        * config/m32c/m32c.h (PUSH_ARGS): Removed.
        * config/nios2/nios2.h (PUSH_ARGS): Likewise.
        * config/pru/pru.h (PUSH_ARGS): Likewise.
        * doc/tm.texi.in: Remove PUSH_ARGS documentation.  Add
        TARGET_PUSH_ARGUMENT hook.
        * doc/tm.texi: Regenerated.

2021-06-17  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/97194
        * config/i386/i386-expand.c (expand_vector_set_var):
        Handle V2FS mode remapping.  Pass TARGET_MMX_WITH_SSE to
        ix86_expand_vector_init_duplicate.
        (ix86_expand_vector_init_duplicate): Emit insv_1 for
        QImode for !TARGET_PARTIAL_REG_STALL.
        * config/i386/predicates.md (vec_setm_mmx_operand): New predicate.
        * config/i386/mmx.md (vec_setv2sf): Use vec_setm_mmx_operand
        as operand 2 predicate.  Call ix86_expand_vector_set_var
        for non-constant index operand.
        (vec_setv2si): Ditto.
        (vec_setv4hi): Ditto.
        (vec_setv8qi): ditto.

2021-06-17  Aldy Hernandez  <aldyh@redhat.com>

        PR tree-optimization/100790
        * gimple-range.cc (range_of_builtin_call): Cleanup clz and ctz
        code.

2021-06-17  Martin Liska  <mliska@suse.cz>

        * doc/invoke.texi: Use consistently -O1 instead of -O.

2021-06-17  Martin Liska  <mliska@suse.cz>

        * gcov-io.h: Update documentation entry about string format.

2021-06-17  Marius Hillenbrand  <mhillen@linux.ibm.com>

        PR target/100871
        * config/s390/vecintrin.h (vec_doublee): Fix to use
          __builtin_s390_vflls.
        (vec_floate): Fix to use __builtin_s390_vflrd.

2021-06-17  Trevor Saunders  <tbsaunde@tbsaunde.org>

        * dominance.c (get_dominated_to_depth): Return auto_vec<basic_block>.
        * dominance.h (get_dominated_to_depth): Likewise.
        (get_all_dominated_blocks): Likewise.
        * cfgcleanup.c (delete_unreachable_blocks): Adjust.
        * gcse.c (hoist_code): Likewise.
        * tree-cfg.c (remove_edge_and_dominated_blocks): Likewise.
        * tree-parloops.c (oacc_entry_exit_ok): Likewise.
        * tree-ssa-dce.c (eliminate_unnecessary_stmts): Likewise.
        * tree-ssa-phiprop.c (pass_phiprop::execute): Likewise.

2021-06-17  Trevor Saunders  <tbsaunde@tbsaunde.org>

        * dominance.c (get_dominated_by_region): Return auto_vec<basic_block>.
        * dominance.h (get_dominated_by_region): Likewise.
        * tree-cfg.c (gimple_duplicate_sese_region): Adjust.
        (gimple_duplicate_sese_tail): Likewise.
        (move_sese_region_to_fn): Likewise.

2021-06-17  Trevor Saunders  <tbsaunde@tbsaunde.org>

        * dominance.c (get_dominated_by): Return auto_vec<basic_block>.
        * dominance.h (get_dominated_by): Likewise.
        * auto-profile.c (afdo_find_equiv_class): Adjust.
        * cfgloopmanip.c (duplicate_loop_to_header_edge): Likewise.
        * loop-unroll.c (unroll_loop_runtime_iterations): Likewise.
        * tree-cfg.c (test_linear_chain): Likewise.
        (test_diamond): Likewise.

2021-06-17  Trevor Saunders  <tbsaunde@tbsaunde.org>

        * cfgloop.h (get_loop_hot_path): Return auto_vec<basic_block>.
        * cfgloopanal.c (get_loop_hot_path): Likewise.
        * tree-ssa-loop-ivcanon.c (tree_estimate_loop_size): Likewise.

2021-06-17  Trevor Saunders  <tbsaunde@tbsaunde.org>

        * cgraph.c (cgraph_node::collect_callers): Return
        auto_vec<cgraph_edge *>.
        * cgraph.h (cgraph_node::collect_callers): Likewise.
        * ipa-cp.c (create_specialized_node): Adjust.
        (decide_about_value): Likewise.
        (decide_whether_version_node): Likewise.
        * ipa-sra.c (process_isra_node_results): Likewise.

2021-06-17  Trevor Saunders  <tbsaunde@tbsaunde.org>

        * vec.h (vl_ptr>::using_auto_storage): Handle null m_vec.
        (auto_vec<T, 0>::auto_vec): Define move constructor, and delete copy
        constructor.
        (auto_vec<T, 0>::operator=): Define move assignment and delete copy
        assignment.

2021-06-17  Aldy Hernandez  <aldyh@redhat.com>

        * gimple-range.cc (debug_seed_ranger): New.
        (dump_ranger): New.
        (debug_ranger): New.

2021-06-17  Richard Biener   <rguenther@suse.de>

        PR tree-optimization/54400
        * tree-vectorizer.h (enum slp_instance_kind): Add
        slp_inst_kind_bb_reduc.
        (reduction_fn_for_scalar_code): Declare.
        * tree-vect-data-refs.c (vect_slp_analyze_instance_dependence):
        Check SLP_INSTANCE_KIND instead of looking at the
        representative.
        (vect_slp_analyze_instance_alignment): Likewise.
        * tree-vect-loop.c (reduction_fn_for_scalar_code): Export.
        * tree-vect-slp.c (vect_slp_linearize_chain): Split out
        chain linearization from vect_build_slp_tree_2 and generalize
        for the use of BB reduction vectorization.
        (vect_build_slp_tree_2): Adjust accordingly.
        (vect_optimize_slp): Elide permutes at the root of BB reduction
        instances.
        (vectorizable_bb_reduc_epilogue): New function.
        (vect_slp_prune_covered_roots): Likewise.
        (vect_slp_analyze_operations): Use them.
        (vect_slp_check_for_constructors): Recognize associatable
        chains for BB reduction vectorization.
        (vectorize_slp_instance_root_stmt): Generate code for the
        BB reduction epilogue.

2021-06-17  Andrew MacLeod  <amacleod@redhat.com>

        * gimple-range-gori.cc (gori_compute::has_edge_range_p): Check with
        may_recompute_p.
        (gori_compute::may_recompute_p): New.
        (gori_compute::outgoing_edge_range_p): Perform recomputations.
        * gimple-range-gori.h (class gori_compute): Add prototype.

2021-06-17  Andrew MacLeod  <amacleod@redhat.com>

        * gimple-range-cache.cc (ranger_cache::range_on_edge): Always return
        true when a range can be calculated.
        * gimple-range.cc (gimple_ranger::dump_bb): Check has_edge_range_p.

2021-06-16  Martin Sebor  <msebor@redhat.com>

        * doc/invoke.texi (-Wmismatched-dealloc, -Wmismatched-new-delete):
        Correct documented defaults.

2021-06-16  Andrew MacLeod  <amacleod@redhat.com>

        * gimple-range-cache.cc (ranger_cache::ranger_cache): Initialize
        m_new_value_p directly.

2021-06-16  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/89021
        * config/i386/i386-expand.c (expand_vec_perm_2perm_pblendv):
        Handle 64bit modes for TARGET_SSE4_1.
        (expand_vec_perm_pshufb2): Handle 64bit modes for TARGET_SSSE3.
        (expand_vec_perm_even_odd_pack): Handle V4HI mode.
        (expand_vec_perm_even_odd_1) <case E_V4HImode>: Expand via
        expand_vec_perm_pshufb2 for TARGET_SSSE3 and via
        expand_vec_perm_even_odd_pack for TARGET_SSE4_1.
        * config/i386/mmx.md (mmx_packusdw): New insn pattern.

2021-06-16  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd.md (aarch64_<sur><addsub>hn<mode>):
        Change to an expander that emits the correct instruction
        depending on endianness.
        (aarch64_<sur><addsub>hn<mode>_insn_le): Define.
        (aarch64_<sur><addsub>hn<mode>_insn_be): Define.

2021-06-16  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Split generator
        for aarch64_<su>qmovn builtins into scalar and vector
        variants.
        * config/aarch64/aarch64-simd.md (aarch64_<su>qmovn<mode>_insn_le):
        Define.
        (aarch64_<su>qmovn<mode>_insn_be): Define.
        (aarch64_<su>qmovn<mode>): Split into scalar and vector
        variants. Change vector variant to an expander that emits the
        correct instruction depending on endianness.

2021-06-16  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Split generator
        for aarch64_sqmovun builtins into scalar and vector variants.
        * config/aarch64/aarch64-simd.md (aarch64_sqmovun<mode>):
        Split into scalar and vector variants. Change vector variant
        to an expander that emits the correct instruction depending
        on endianness.
        (aarch64_sqmovun<mode>_insn_le): Define.
        (aarch64_sqmovun<mode>_insn_be): Define.

2021-06-16  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd.md (aarch64_xtn<mode>_insn_le):
        Define - modeling zero-high-half semantics.
        (aarch64_xtn<mode>): Change to an expander that emits the
        appropriate instruction depending on endianness.
        (aarch64_xtn<mode>_insn_be): Define - modeling zero-high-half
        semantics.
        (aarch64_xtn2<mode>_le): Rename to...
        (aarch64_xtn2<mode>_insn_le): This.
        (aarch64_xtn2<mode>_be): Rename to...
        (aarch64_xtn2<mode>_insn_be): This.
        (vec_pack_trunc_<mode>): Emit truncation instruction instead
        of aarch64_xtn.
        * config/aarch64/iterators.md (Vnarrowd): Add Vnarrowd mode
        attribute iterator.

2021-06-16  Martin Jambor  <mjambor@suse.cz>

        PR tree-optimization/100453
        * tree-sra.c (create_access): Disqualify any const candidates
        which are written to.
        (sra_modify_expr): Do not store sub-replacements back to a const base.
        (handle_unscalarized_data_in_subtree): Likewise.
        (sra_modify_assign): Likewise.  Earlier, use TREE_READONLy test
        instead of constant_decl_p.

2021-06-16  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/101062
        * stor-layout.c (finish_bitfield_representative): For fields in unions
        assume nextf is always NULL.
        (finish_bitfield_layout): Compute bit field representatives also in
        unions, but handle it as if each bitfield was the only field in the
        aggregate.

2021-06-16  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101088
        * tree-ssa-loop-im.c (sm_seq_valid_bb): Only look for
        supported refs on edges.  Do not assert same ref but
        different kind stores are unsuported but mark them so.
        (hoist_memory_references): Only look for supported refs
        on exits.

2021-06-16  Roger Sayle  <roger@nextmovesoftware.com>

        PR rtl-optimization/46235
        * config/i386/i386.md: New define_split for bt followed by cmov.
        (*bt<mode>_setcqi): New define_insn_and_split for bt followed by setc.
        (*bt<mode>_setncqi): New define_insn_and_split for bt then setnc.
        (*bt<mode>_setnc<mode>): New define_insn_and_split for bt followed
        by setnc with zero extension.

2021-06-16  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101083
        * tree-vect-slp.c (vect_slp_build_two_operator_nodes): Get
        vectype as argument.
        (vect_build_slp_tree_2): Adjust.

2021-06-15  Martin Sebor  <msebor@redhat.com>

        PR middle-end/100876
        * builtins.c: (gimple_call_return_array): Account for size_t
        mangling as either unsigned int or unsigned long

2021-06-15  Jeff Law  <jeffreyalaw@gmail.com>

        * compare-elim.c (try_eliminate_compare): Run DCE to clean things
        up before eliminating comparisons.

2021-06-15  Aldy Hernandez  <aldyh@redhat.com>

        * range-op.cc (operator_bitwise_or::wi_fold): Make sure
        nonzero|X is nonzero.
        (range_op_bitwise_and_tests): Add tests for above.

2021-06-15  Carl Love  <cel@us.ibm.com>

        PR target/101022
        * config/rs6000/rs6000-builtin.def (VCMPEQUT): Fix the ICODE for the
        enum definition.
        (VRLQ, VSLQ, VSRQ, VSRAQ): Remove unused BU_P10_OVERLOAD_2
        definitions.

2021-06-15  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/92568
        * gimplify.c (enum gimplify_defaultmap_kind): Add GDMK_SCALAR_TARGET.
        (struct gimplify_omp_ctx): Extend defaultmap array by one.
        (new_omp_context): Init defaultmap[GDMK_SCALAR_TARGET].
        (omp_notice_variable): Update type classification for Fortran.
        (gimplify_scan_omp_clauses): Update calls for new argument; handle
        GDMK_SCALAR_TARGET; for Fortran, GDMK_POINTER avoid GOVD_MAP_0LEN_ARRAY.
        * langhooks-def.h (lhd_omp_scalar_p): Add 'ptr_ok' argument.
        * langhooks.c (lhd_omp_scalar_p): Likewise.
        (LANG_HOOKS_OMP_ALLOCATABLE_P, LANG_HOOKS_OMP_SCALAR_TARGET_P): New.
        (LANG_HOOKS_DECLS): Add them.
        * langhooks.h (struct lang_hooks_for_decls): Add new hooks, update
        omp_scalar_p pointer type to include the new bool argument.

2021-06-15  David Malcolm  <dmalcolm@redhat.com>

        * doc/analyzer.texi
        (Special Functions for Debugging the Analyzer): Add
        __analyzer_dump_capacity.

2021-06-15  Jakub Jelinek  <jakub@redhat.com>

        PR target/101046
        * expr.c (expand_expr_real_2) <case VEC_PACK_FIX_TRUNC_EXPR,
        case VEC_PACK_TRUNC_EXPR>: Clear subtarget when changing mode.

2021-06-15  Richard Biener  <rguenther@suse.de>

        * cfgloopanal.c (mark_irreducible_loops): Use a dominance
        check to identify loop latches.
        * cfgloop.c (verify_loop_structure): Likewise.
        * loop-init.c (apply_loop_flags): Allow marked irreducible
        regions even with multiple latches.
        * predict.c (rebuild_frequencies): Simplify.

2021-06-15  Richard Biener  <rguenther@suse.de>

        * tree-ssa-threadupdate.c
        (jump_thread_path_registry::mark_threaded_blocks): Assert we
        have marked irreducible regions.

2021-06-14  Martin Sebor  <msebor@redhat.com>

        PR c++/100876
        * builtins.c (gimple_call_return_array): Check for attribute fn spec.
        Handle calls to placement new.
        (ndecl_dealloc_argno): Avoid placement delete.

2021-06-14  Peter Bergner  <bergner@linux.ibm.com>

        PR target/100777
        * config/rs6000/rs6000-call.c (rs6000_gimple_fold_mma_builtin): Use
        create_tmp_reg_or_ssa_name().

2021-06-14  Andrew MacLeod  <amacleod@redhat.com>

        * gimple-range-cache.cc (ranger_cache::ranger_cache): Adjust.
        (ranger_cache::enable_new_values): Set to specified value and
        return the old value.
        (ranger_cache::disable_new_values): Delete.
        (ranger_cache::fill_block_cache): Disable non 1st order derived
        poor values.
        * gimple-range-cache.h (ranger_cache): Adjust prototypes.
        * gimple-range.cc (gimple_ranger::range_of_expr): Adjust.

2021-06-14  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/101058
        * config/i386/i386-expand.c (ix86_vectorize_vec_perm_const):
        Return true early when testing with V2HImode.
        * config/i386/mmx.md (*punpckwd): Split to sse2_pshuflw_1.

2021-06-14  Christophe Lyon  <christophe.lyon@linaro.org>

        * config/arm/mve.md (mve_vec_unpack<US>_lo_<mode>): New pattern.
        (mve_vec_unpack<US>_hi_<mode>): New pattern.
        (@mve_vec_pack_trunc_lo_<mode>): New pattern.
        (mve_vmovntq_<supf><mode>): Prefix with '@'.
        * config/arm/neon.md (vec_unpack<US>_hi_<mode>): Move to
        vec-common.md.
        (vec_unpack<US>_lo_<mode>): Likewise.
        (vec_pack_trunc_<mode>): Rename to
        neon_quad_vec_pack_trunc_<mode>.
        * config/arm/vec-common.md (vec_unpack<US>_hi_<mode>): New
        pattern.
        (vec_unpack<US>_lo_<mode>): New.
        (vec_pack_trunc_<mode>): New.

2021-06-14  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/100934
        * tree-ssa-dom.c (pass_dominator::execute): Properly
        mark irreducible regions.

2021-06-14  Martin Liska  <mliska@suse.cz>

        * doc/invoke.texi: Put r{...} on the same line as @item.

2021-06-14  Martin Liska  <mliska@suse.cz>

        * doc/invoke.texi: Add missing newline.

2021-06-14  Martin Liska  <mliska@suse.cz>

        * doc/invoke.texi: Remove '+' charasters.

2021-06-14  Claudiu Zissulescu  <claziss@synopsys.com>

        * config.gcc (arc): Add support for with_cpu option.
        * config/arc/arc.h (OPTION_DEFAULT_SPECS): Add fpu.

2021-06-14  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101031
        * tree-ssa-strlen.c (maybe_invalidate): Increment max_size
        instead of size when accounting for a possibly string
        terminating nul.

2021-06-14  Martin Liska  <mliska@suse.cz>

        * gimple-ssa-evrp.c (pointer_equiv_analyzer::~pointer_equiv_analyzer): Use delete[].

2021-06-14  Aldy Hernandez  <aldyh@redhat.com>

        * value-query.cc (gimple_range_global): Call get_range_global
        if called after inlining.

2021-06-13  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/101021
        * config/i386/i386-expand.c (expand_vec_perm_pshufb):
        Emit constant permutation insn directly from here.

2021-06-13  Trevor Saunders  <tbsaunde@tbsaunde.org>

        * attribs.c (find_attribute_namespace): Iterate over vec<> with
        range based for.
        * auto-profile.c (afdo_find_equiv_class): Likewise.
        * gcc.c (do_specs_vec): Likewise.
        (do_spec_1): Likewise.
        (driver::set_up_specs): Likewise.
        * gimple-loop-jam.c (any_access_function_variant_p): Likewise.
        * gimple-ssa-store-merging.c (compatible_load_p): Likewise.
        (imm_store_chain_info::try_coalesce_bswap): Likewise.
        (imm_store_chain_info::coalesce_immediate_stores): Likewise.
        (get_location_for_stmts): Likewise.
        * graphite-poly.c (print_iteration_domains): Likewise.
        (free_poly_bb): Likewise.
        (remove_gbbs_in_scop): Likewise.
        (free_scop): Likewise.
        (dump_gbb_cases): Likewise.
        (dump_gbb_conditions): Likewise.
        (print_pdrs): Likewise.
        (print_scop): Likewise.
        * ifcvt.c (cond_move_process_if_block): Likewise.
        * lower-subreg.c (decompose_multiword_subregs): Likewise.
        * regcprop.c (pass_cprop_hardreg::execute): Likewise.
        * sanopt.c (sanitize_rewrite_addressable_params): Likewise.
        * sel-sched-dump.c (dump_insn_vector): Likewise.
        * store-motion.c (store_ops_ok): Likewise.
        (store_killed_in_insn): Likewise.
        * timevar.c (timer::named_items::print): Likewise.
        * tree-cfgcleanup.c (cleanup_control_flow_pre): Likewise.
        (cleanup_tree_cfg_noloop): Likewise.
        * tree-data-ref.c (dump_data_references): Likewise.
        (print_dir_vectors): Likewise.
        (print_dist_vectors): Likewise.
        (dump_data_dependence_relations): Likewise.
        (dump_dist_dir_vectors): Likewise.
        (dump_ddrs): Likewise.
        (create_runtime_alias_checks): Likewise.
        (free_subscripts): Likewise.
        (save_dist_v): Likewise.
        (save_dir_v): Likewise.
        (invariant_access_functions): Likewise.
        (same_access_functions): Likewise.
        (access_functions_are_affine_or_constant_p): Likewise.
        (find_data_references_in_stmt): Likewise.
        (graphite_find_data_references_in_stmt): Likewise.
        (free_dependence_relations): Likewise.
        (free_data_refs): Likewise.
        * tree-inline.c (copy_debug_stmts): Likewise.
        * tree-into-ssa.c (dump_currdefs): Likewise.
        (rewrite_update_phi_arguments): Likewise.
        * tree-ssa-propagate.c (clean_up_loop_closed_phi): Likewise.
        * tree-vect-data-refs.c (vect_analyze_possibly_independent_ddr):
        Likewise.
        (vect_slp_analyze_node_dependences): Likewise.
        (vect_slp_analyze_instance_dependence): Likewise.
        (vect_record_base_alignments): Likewise.
        (vect_get_peeling_costs_all_drs): Likewise.
        (vect_peeling_supportable): Likewise.
        * tree-vectorizer.c (vec_info::~vec_info): Likewise.
        (vec_info::free_stmt_vec_infos): Likewise.

2021-06-13  Jeff Law  <jeffreyalaw@gmail.com>

        * config/h8300/logical.md (<code>qi3_1<cczn>): New pattern.
        (andqi3_1<cczn>): Removed.
        (<ors>qi3_1): Do not split for IOR/XOR a single bit.
        (H8/SX bit logicals): Split out from other patterns.
        * config/h8300/multiply.md (mulqihi3_const<cczn>): Renamed from
        mulqihi3_const_clobber_flags.
        (mulqihi3<cczn>, mulhisi3_const<cczn>, mulhisi3<cczn>): Similarly

2021-06-13  H.J. Lu  <hjl.tools@gmail.com>

        PR target/101023
        * config/i386/i386.c (ix86_expand_prologue): Set red_zone_used
        to true if red zone is used.
        (ix86_output_indirect_jmp): Replace ix86_red_zone_size with
        ix86_red_zone_used.
        * config/i386/i386.h (machine_function): Add red_zone_used.
        (ix86_red_zone_size): Removed.
        (ix86_red_zone_used): New.
        * config/i386/i386.md (peephole2 patterns): Replace
        ix86_red_zone_size with ix86_red_zone_used.

2021-06-12  Jason Merrill  <jason@redhat.com>

        * doc/extend.texi (unused variable attribute): Applies to
        structure fields as well.

2021-06-12  Eugene Rozenfeld  <erozen@microsoft.com>

        * auto-profile.c (read_profile): fix a typo in an error string

2021-06-11  Thomas Schwinge  <thomas@codesourcery.com>

        * tree-pretty-print.h (dump_omp_clauses): Add 'bool = true'
        default argument.
        * tree-pretty-print.c (dump_omp_clauses): Update.
        (dump_generic_node) <OMP_CLAUSE>: Use it.

2021-06-11  Srinath Parvathaneni  <srinath.parvathaneni@arm.com>

        PR target/101016
        * config/arm/arm_mve.h (__arm_vld1q): Change __ARM_mve_coerce(p0,
        int8_t const *) to __ARM_mve_coerce1(p0, int8_t *) in the argument for
        the polymorphic variants matching code.
        (__arm_vld1q_z): Likewise.
        (__arm_vld2q): Likewise.
        (__arm_vld4q): Likewise.
        (__arm_vldrbq_gather_offset): Likewise.
        (__arm_vldrbq_gather_offset_z): Likewise.

2021-06-11  Roger Sayle  <roger@nextmovesoftware.com>

        PR tree-optimization/96392
        * fold-const.h (tree_expr_maybe_real_minus_zero_p): Fix prototype.

2021-06-11  Roger Sayle  <roger@nextmovesoftware.com>

        PR tree-optimization/96392
        * fold-const.c (fold_real_zero_addition_p): Take both arguments
        of the addition or subtraction, not just the zero.  Use this
        other argument in tests for signaling NaNs and signed zeros.
        (tree_expr_maybe_real_minus_zero_p): New predicate.
        * fold-const.h (fold_real_zero_addition_p): Update prototype.
        (tree_expr_maybe_real_minus_zero_p): New function prototype.
        * match.pd: Update calls to fold_real_zero_addition_p.
        Replace HONOR_NANS with tree_expr_maybe_nan_p.
        Replace HONOR_SIGNED_ZEROS with tree_expr_maybe_real_minus_zero_p.
        Replace HONOR_SNANS with tree_expr_maybe_signaling_nan_p.
        * tree-ssa-reassoc.c (eliminate_using_constants): Update
        call to fold_real_zero_addition_p.

2021-06-11  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101025
        * tree-ssa-loop-im.c (sm_seq_valid_bb): Make sure to process
        all refs that require dependence checking.

2021-06-11  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101028
        * tree-vect-slp.c (vect_build_slp_tree_2): When SLP
        reassoc discovery fails fatally, mark appropriate lanes
        in matches[] so.

2021-06-11  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101026
        * tree-vect-slp.c (vect_build_slp_tree_2): Make sure we
        have a representative for the associated chain nodes.

2021-06-11  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/101008
        * simplify-rtx.c (relational_result): New function.
        (simplify_logical_relational_operation,
        simplify_relational_operation): Use it.

2021-06-11  Jakub Jelinek  <jakub@redhat.com>

        PR target/101007
        * config/i386/sse.md (*vec_concat<mode>_0_1): Require TARGET_SSE2.

2021-06-11  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/101021
        * config/i386/i386-expand.c (expand_vec_perm_pshufb): Return
        false if the permutation can be implemented with constant
        permutation instruction in wider mode.
        (canonicalize_vector_int_perm): Move above expand_vec_perm_pshufb.
        Handle V8QImode and V4HImode.

2021-06-11  Martin Liska  <mliska@suse.cz>

        PR gcov-profile/100788
        * common.opt: Add new option.
        * coverage.c (coverage_begin_function): Emit warning instead on
        the internal compiler error.
        * doc/invoke.texi: Document the option.
        * toplev.c (process_options): Enable it by default.

2021-06-11  Richard Biener  <rguenther@suse.de>

        PR middle-end/101009
        * tree-data-ref.c (build_classic_dist_vector_1): Make sure
        to set *init_b to true when we encounter a constant equal
        index pair.
        (compute_affine_dependence): Also dump the actual DR_REF.

2021-06-10  Aldy Hernandez  <aldyh@redhat.com>

        PR tree-optimization/100984
        * gimple-ssa-evrp.c  (ssa_equiv_stack): Use auto_vec for
        replacements table.
        (ssa_equiv_stack::~ssa_equiv_stack): Remove.

2021-06-11  Kewen Lin  <linkw@linux.ibm.com>

        * config/rs6000/rs6000.md
        (floatsi<SFDF:mode>2_lfiwax_<QHI:mode>_mem_zext): New
        define_insn_and_split.

2021-06-11  Richard Biener  <rguenther@suse.de>

        * tree-vect-slp.c (vect_build_slp_tree_2): Use stablesort
        to sort operands of the associative chain.

2021-06-11  Richard Biener  <rguenther@suse.de>

        * system.h (gcc_stablesort_r): Declare.
        * sort.cc (gcc_sort_r): Support stable sort.
        (gcc_stablesort_r): Define.
        * vec.h (vec<>::stablesort): Add.

2021-06-10  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/89021
        * config/i386/i386-expand.c (ix86_split_mmx_punpck):
        Handle V2SF mode.  Emit SHUFPS to fixup unpack-high for V2SF mode.
        (expand_vec_perm_blend): Handle 64bit modes for TARGET_SSE4_1.
        (expand_vec_perm_pshufb): Handle 64bit modes for TARGET_SSSE3.
        (expand_vec_perm_pblendv): Handle 64bit modes for TARGET_SSE4_1.
        (expand_vec_perm_interleave2): Handle 64bit modes.
        (expand_vec_perm_even_odd_pack): Handle V8QI mode.
        (expand_vec_perm_even_odd_1): Ditto.
        (ix86_vectorize_vec_perm_const): Ditto.
        * config/i386/i386.md (UNSPEC_PSHUFB): Move from ...
        * config/i386/sse.md: ... here.
        * config/i386/mmx.md (*vec_interleave_lowv2sf):
        New insn_and_split pattern.
        (*vec_interleave_highv2sf): Ditto.
        (mmx_pshufbv8qi3): New insn pattern.
        (*mmx_pblendw): Ditto.

2021-06-10  Peter Bergner  <bergner@linux.ibm.com>

        * config/rs6000/rs6000-builtin.def (build_pair): New built-in.
        (build_acc): Likewise.
        * config/rs6000/rs6000-call.c (mma_expand_builtin): Swap assemble
        source operands in little-endian mode.
        (rs6000_gimple_fold_mma_builtin): Handle VSX_BUILTIN_BUILD_PAIR.
        (mma_init_builtins): Likewise.
        * config/rs6000/rs6000.c (rs6000_split_multireg_move): Handle endianness
        ordering for the MMA assemble and build source operands.
        * doc/extend.texi (__builtin_vsx_build_acc, __builtin_mma_build_pair):
        Document.
        (__builtin_mma_assemble_acc, __builtin_mma_assemble_pair): Remove
        documentation.

2021-06-10  Jeff Law  <jeffreyalaw@gmail.com>

        * config/h8300/h8300.c (select_cc_mode): Handle MEM.  Use
        REG_P.
        * config/h8300/extensions.md: Replace _clobber_flags patterns
        with <cczn>.

2021-06-10  Robin Dapp  <rdapp@linux.ibm.com>

        * config/s390/vector.md (vcond_mask_<mode><mode>): Change to
        (vcond_mask_<mode><tointvec>): this.

2021-06-10  Andrew Stubbs  <ams@codesourcery.com>
            Thomas Schwinge  <thomas@codesourcery.com>

        * omp-builtins.def (BUILT_IN_GOACC_ENTER_EXIT_DATA): Split into...
        (BUILT_IN_GOACC_ENTER_DATA, BUILT_IN_GOACC_EXIT_DATA): ... these.
        * gimple.h (enum gf_mask): Split
        'GF_OMP_TARGET_KIND_OACC_ENTER_EXIT_DATA' into
        'GF_OMP_TARGET_KIND_OACC_ENTER_DATA' and
        'GF_OMP_TARGET_KIND_OACC_EXIT_DATA'.
        (is_gimple_omp_oacc): Update.
        * gimple-pretty-print.c (dump_gimple_omp_target): Likewise.
        * gimplify.c (gimplify_omp_target_update): Likewise.
        * omp-expand.c (expand_omp_target, build_omp_regions_1)
        (omp_make_gimple_edges): Likewise.
        * omp-low.c (check_omp_nesting_restrictions, lower_omp_target):
        Likewise.

2021-06-10  Aldy Hernandez  <aldyh@redhat.com>

        * value-query.cc (value_query::value_on_edge): Rename name to
        expr.
        (range_query::range_on_edge): Same.
        (range_query::value_of_expr): Same.
        (range_query::value_on_edge): Same.
        * value-query.h (class value_query): Same.
        (class range_query): Same.

2021-06-10  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/101003
        * tree-vect-slp.c (vect_build_slp_tree_2): Appropriately
        use the pattern stmt defs when linearizing a chain.

2021-06-10  Jakub Jelinek  <jakub@redhat.com>

        PR debug/100852
        * ifcvt.c (noce_get_alt_condition, noce_try_abs): Use
        prev_nonnote_nondebug_insn instead of prev_nonnote_insn.

2021-06-10  Clement Chigot  <clement.chigot@atos.net>

        * config/rs6000/aix71.h (ASM_CPU_SPEC): Add Power10 directive.
        * config/rs6000/aix72.h (ASM_CPU_SPEC): Likewise.

2021-06-09  Andrew Pinski  <apinski@marvell.com>

        PR tree-optimization/100925
        * match.pd (a ? CST1 : CST2): Limit transformations
        that would produce a negative to integeral types only.
        Change !POINTER_TYPE_P to INTEGRAL_TYPE_P also.

2021-06-09  Jeff Law  <jeffreyalaw@gmail.com>

        Revert:
        2021-06-09  Jeff Law  <jeffreyalaw@gmail.com>

        * doc/tm.texi: Correctly update.

2021-06-09  Jeff Law  <jeffreyalaw@gmail.com>

        * doc/tm.texi: Correctly update.

2021-06-09  H.J. Lu  <hjl.tools@gmail.com>

        PR other/100735
        * doc/tm.texi.in (Trampolines): Add a missing blank line.

2021-06-09  Paul Eggert  <eggert@cs.ucla.edu>

        PR other/100735
        * doc/invoke.texi (Code Gen Options); Document that -fno-trampolines
        and -ftrampolines work only with Ada.
        * doc/tm.texi.in (Trampolines): Likewise.
        * doc/tm.texi: Regenerated.

2021-06-09  Carl Love  <cel@us.ibm.com>

        * config/rs6000/altivec.h (vec_signextll, vec_signexti, vec_signextq):
        Add define for new builtins.
        * config/rs6000/altivec.md(altivec_vreveti2): Add define_expand.
        * config/rs6000/rs6000-builtin.def (VSIGNEXTI, VSIGNEXTLL):  Add
        overloaded builtin definitions.
        (VSIGNEXTSB2W, VSIGNEXTSH2W, VSIGNEXTSB2D, VSIGNEXTSH2D,VSIGNEXTSW2D,
        VSIGNEXTSD2Q):  Add builtin expansions.
        (SIGNEXT): Add P10 overload definition.
        * config/rs6000/rs6000-call.c (P9V_BUILTIN_VEC_VSIGNEXTI, P9V_BUILTIN_VEC_VSIGNEXTLL,
        P10_BUILTIN_VEC_SIGNEXT): Add overloaded argument definitions.
        * config/rs6000/vsx.md (vsx_sign_extend_v2di_v1ti): Add define_insn.
        (vsignextend_v2di_v1ti, vsignextend_qi_<mode>, vsignextend_hi_<mode>,
        vsignextend_si_v2di)[VIlong]: Add define_expand.
        Make define_insn vsx_sign_extend_si_v2di visible.
        * doc/extend.texi:  Add documentation for the vec_signexti,
        vec_signextll builtins and vec_signextq.

2021-06-09  Carl Love  <cel@us.ibm.com>

        * config/rs6000/rs6000.c (__fixkfti, __fixunskfti, __floattikf,
        __floatuntikf): Names changed to __fixkfti_sw, __fixunskfti_sw,
        __floattikf_sw, __floatuntikf_sw respectively.
        * config/rs6000/rs6000.md (floatti<mode>2, floatunsti<mode>2,
        fix_trunc<mode>ti2, fixuns_trunc<mode>ti2): Add
        define_insn for mode IEEE 128.

2021-06-09  Carl Love  <cel@us.ibm.com>

        * config/rs6000/altivec.md (altivec_vslq, altivec_vsrq):
        Rename to altivec_vslq_<mode>, altivec_vsrq_<mode>, mode VEC_TI.
        * config/rs6000/vector.md (VEC_TI): Was named VSX_TI in vsx.md.
        (vashlv1ti3): Change to vashl<mode>3, mode VEC_TI.
        (vlshrv1ti3): Change to vlshr<mode>3, mode VEC_TI.
        * config/rs6000/vsx.md (VSX_TI): Remove define_mode_iterator. Update
        uses of VSX_TI to VEC_TI.

2021-06-09  Carl Love  <cel@us.ibm.com>

        * config/rs6000/dfp.md (floattitd2, fixtdti2): New define_insns.

2021-06-09  Carl Love  <cel@us.ibm.com>

        * config/rs6000/altivec.h (vec_dive, vec_mod): Add define for new
        builtins.
        * config/rs6000/altivec.md (UNSPEC_VMULEUD, UNSPEC_VMULESD,
        UNSPEC_VMULOUD, UNSPEC_VMULOSD): New unspecs.
        (altivec_eqv1ti, altivec_gtv1ti, altivec_gtuv1ti, altivec_vmuleud,
        altivec_vmuloud, altivec_vmulesd, altivec_vmulosd, altivec_vrlq,
        altivec_vrlqmi, altivec_vrlqmi_inst, altivec_vrlqnm,
        altivec_vrlqnm_inst, altivec_vslq, altivec_vsrq, altivec_vsraq,
        altivec_vcmpequt_p, altivec_vcmpgtst_p, altivec_vcmpgtut_p): New
        define_insn.
        (vec_widen_umult_even_v2di, vec_widen_smult_even_v2di,
        vec_widen_umult_odd_v2di, vec_widen_smult_odd_v2di, altivec_vrlqmi,
        altivec_vrlqnm): New define_expands.
        * config/rs6000/rs6000-builtin.def (VCMPEQUT_P, VCMPGTST_P,
        VCMPGTUT_P): Add macro expansions.
        (BU_P10V_AV_P): Add builtin predicate definition.
        (VCMPGTUT, VCMPGTST, VCMPEQUT, CMPNET, CMPGE_1TI,
        CMPGE_U1TI, CMPLE_1TI, CMPLE_U1TI, VNOR_V1TI_UNS, VNOR_V1TI, VCMPNET_P,
        VCMPAET_P, VMULEUD, VMULESD, VMULOUD, VMULOSD, VRLQ,
        VSLQ, VSRQ, VSRAQ, VRLQNM, DIV_V1TI, UDIV_V1TI, DIVES_V1TI, DIVEU_V1TI,
        MODS_V1TI, MODU_V1TI, VRLQMI): New macro expansions.
        (VRLQ, VSLQ, VSRQ, VSRAQ, DIVE, MOD): New overload expansions.
        * config/rs6000/rs6000-call.c (P10_BUILTIN_VCMPEQUT,
        P10V_BUILTIN_CMPGE_1TI, P10V_BUILTIN_CMPGE_U1TI,
        P10V_BUILTIN_VCMPGTUT, P10V_BUILTIN_VCMPGTST,
        P10V_BUILTIN_CMPLE_1TI, P10V_BUILTIN_VCMPLE_U1TI,
        P10V_BUILTIN_DIV_V1TI, P10V_BUILTIN_UDIV_V1TI,
        P10V_BUILTIN_VMULESD, P10V_BUILTIN_VMULEUD,
        P10V_BUILTIN_VMULOSD, P10V_BUILTIN_VMULOUD,
        P10V_BUILTIN_VNOR_V1TI, P10V_BUILTIN_VNOR_V1TI_UNS,
        P10V_BUILTIN_VRLQ, P10V_BUILTIN_VRLQMI,
        P10V_BUILTIN_VRLQNM, P10V_BUILTIN_VSLQ,
        P10V_BUILTIN_VSRQ, P10V_BUILTIN_VSRAQ,
        P10V_BUILTIN_VCMPGTUT_P, P10V_BUILTIN_VCMPGTST_P,
        P10V_BUILTIN_VCMPEQUT_P, P10V_BUILTIN_VCMPGTUT_P,
        P10V_BUILTIN_VCMPGTST_P, P10V_BUILTIN_CMPNET,
        P10V_BUILTIN_VCMPNET_P, P10V_BUILTIN_VCMPAET_P,
        P10V_BUILTIN_DIVES_V1TI, P10V_BUILTIN_MODS_V1TI,
        P10V_BUILTIN_MODU_V1TI):
        New overloaded definitions.
        (rs6000_gimple_fold_builtin) [P10V_BUILTIN_VCMPEQUT,
        P10V_BUILTIN_CMPNET, P10V_BUILTIN_CMPGE_1TI,
        P10V_BUILTIN_CMPGE_U1TI, P10V_BUILTIN_VCMPGTUT,
        P10V_BUILTIN_VCMPGTST, P10V_BUILTIN_CMPLE_1TI,
        P10V_BUILTIN_CMPLE_U1TI]: New case statements.
        (rs6000_init_builtins) [bool_V1TI_type_node, int_ftype_int_v1ti_v1ti]:
        New assignments.
        (altivec_init_builtins): New E_V1TImode case statement.
        (builtin_function_type)[P10_BUILTIN_128BIT_VMULEUD,
        P10_BUILTIN_128BIT_VMULOUD, P10_BUILTIN_128BIT_DIVEU_V1TI,
        P10_BUILTIN_128BIT_MODU_V1TI, P10_BUILTIN_CMPGE_U1TI,
        P10_BUILTIN_VCMPGTUT, P10_BUILTIN_VCMPEQUT]: New case statements.
        * config/rs6000/rs6000.c (rs6000_handle_altivec_attribute) [E_TImode,
        E_V1TImode]: New case statements.
        * config/rs6000/rs6000.h (rs6000_builtin_type_index): New enum
        value RS6000_BTI_bool_V1TI.
        * config/rs6000/vector.md (vector_gtv1ti,vector_nltv1ti,
        vector_gtuv1ti, vector_nltuv1ti, vector_ngtv1ti, vector_ngtuv1ti,
        vector_eq_v1ti_p, vector_ne_v1ti_p, vector_ae_v1ti_p,
        vector_gt_v1ti_p, vector_gtu_v1ti_p, vrotlv1ti3, vashlv1ti3,
        vlshrv1ti3, vashrv1ti3): New define_expands.
        * config/rs6000/vsx.md (UNSPEC_VSX_DIVSQ, UNSPEC_VSX_DIVUQ,
        UNSPEC_VSX_DIVESQ, UNSPEC_VSX_DIVEUQ, UNSPEC_VSX_MODSQ,
        UNSPEC_VSX_MODUQ): New unspecs.
        (mulv2di3, vsx_div_v1ti, vsx_udiv_v1ti, vsx_dives_v1ti,
        vsx_diveu_v1ti, vsx_mods_v1ti, vsx_modu_v1ti, xxswapd_v1ti): New
        define_insns.
        (vcmpnet): New define_expand.
        * doc/extend.texi: Add documentation for the new builtins vec_rl,
        vec_rlmi, vec_rlnm, vec_sl, vec_sr, vec_sra, vec_mule, vec_mulo,
        vec_div, vec_dive, vec_mod, vec_cmpeq, vec_cmpne, vec_cmpgt, vec_cmplt,
        vec_cmpge, vec_cmple, vec_all_eq, vec_all_ne, vec_all_gt, vec_all_lt,
        vec_all_ge, vec_all_le, vec_any_eq, vec_any_ne, vec_any_gt, vec_any_lt,
        vec_any_ge, vec_any_le.

2021-06-09  Carl Love  <cel@us.ibm.com>

        * config/rs6000/altivec.md (altivec_vrl<VI_char>mi): Fix
        bug in argument generation.

2021-06-09  Christophe Lyon  <christophe.lyon@linaro.org>

        * config/arm/iterators.md (<supf>): Remove VCLZQ_U, VCLZQ_S.
        (VCLZQ): Remove.
        * config/arm/mve.md (mve_vclzq_<supf><mode>): Add '@' prefix,
        remove <supf> iterator.
        (mve_vclzq_u<mode>): New.
        * config/arm/neon.md (clz<mode>2): Rename to neon_vclz<mode>.
        (neon_vclz<mode): Move to ...
        * config/arm/unspecs.md (VCLZQ_U, VCLZQ_S): Remove.
        * config/arm/vec-common.md: ... here. Add support for MVE.

2021-06-09  Christophe Lyon  <christophe.lyon@linaro.org>

        * config/arm/mve.md (mve_vhaddq_<supf><mode>): Prefix with '@'.
        (@mve_vrhaddq_<supf><mode): Likewise.
        * config/arm/neon.md (neon_v<r>hadd<sup><mode>): Likewise.
        * config/arm/vec-common.md (avg<mode>3_floor, uavg<mode>3_floor)
        (avg<mode>3_ceil", uavg<mode>3_ceil): New patterns.

2021-06-09  imba-tjd  <109224573@qq.com>

        * doc/invoke.texi: Fix typo.

2021-06-09  Roger Sayle  <roger@nextmovesoftware.com>

        PR middle-end/53267
        * fold-const-call.c (fold_const_call_sss) [CASE_CFN_FMOD]:
        Support evaluation of fmod/fmodf/fmodl at compile-time.

2021-06-09  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/100981
        * tree-vect-loop.c (vect_create_epilog_for_reduction): Use
        gimple_get_lhs to also handle calls.
        * tree-vect-slp-patterns.c (complex_pattern::build): Transfer
        reduction info.

2021-06-09  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/97832
        * tree-vectorizer.h (_slp_tree::failed): New.
        * tree-vect-slp.c (_slp_tree::_slp_tree): Initialize
        failed member.
        (_slp_tree::~_slp_tree): Free failed.
        (vect_build_slp_tree): Retain failed nodes and record
        matches in them, copying that back out when running
        into a cached fail.  Dump start and end of discovery.
        (dt_sort_cmp): New.
        (vect_build_slp_tree_2): Handle associatable chains
        together doing more aggressive operand swapping.

2021-06-09  H.J. Lu  <hjl.tools@gmail.com>

        PR target/100896
        * config.gcc (gcc_cv_initfini_array): Set to yes for Linux and
        GNU targets.
        * doc/install.texi: Require glibc 2.1 and binutils 2.12 for
        Linux and GNU targets.

2021-06-09  Richard Biener  <rguenther@suse.de>

        * tree-vect-stmts.c (vect_is_simple_use): Always get dt
        from the stmt.

2021-06-09  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc.md (loop_end): Change it to
        define_insn_and_split.

2021-06-09  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc.md (maddhisi4): Use VMAC2H instruction.
        (machi): New pattern.
        (umaddhisi4): Use VMAC2HU instruction.
        (umachi): New pattern.

2021-06-09  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc-protos.h (arc_split_move_p): New prototype.
        * config/arc/arc.c (arc_split_move_p): New function.
        (arc_split_move): Clean up.
        * config/arc/arc.md (movdi_insn): Clean up, use arc_split_move_p.
        (movdf_insn): Likewise.
        * config/arc/simdext.md (mov<VWH>_insn): Likewise.

2021-06-09  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/100936
        * config/i386/i386.c (print_operand_address_as): Rename "no_rip"
        argument to "raw".  Do not emit segment overrides when "raw" is true.

2021-06-09  Martin Liska  <mliska@suse.cz>

        * doc/gcov.texi: Create a proper JSON files.
        * doc/invoke.texi: Remove dots in order to make it a valid
        JSON object.

2021-06-09  Xionghu Luo  <luoxhu@linux.ibm.com>

        * config/rs6000/rs6000-p8swap.c (pattern_is_rotate64): New.
        (insn_is_load_p): Use pattern_is_rotate64.
        (insn_is_swap_p): Likewise.
        (quad_aligned_load_p): Likewise.
        (const_load_sequence_p): Likewise.
        (replace_swapped_aligned_load): Likewise.
        (recombine_lvx_pattern): Likewise.
        (recombine_stvx_pattern): Likewise.

2021-06-09  Andrew MacLeod  <amacleod@redhat.com>

        * gimple-range-gori.cc (gori_compute::outgoing_edge_range_p): Use a
        fur_stmt source record.
        * gimple-range.cc (fur_source::get_operand): Generic range query.
        (fur_source::get_phi_operand): New.
        (fur_source::register_dependency): New.
        (fur_source::query): New.
        (class fur_edge): New.  Edge source for operands.
        (fur_edge::fur_edge): New.
        (fur_edge::get_operand): New.
        (fur_edge::get_phi_operand): New.
        (fur_edge::query): New.
        (fur_stmt::fur_stmt): New.
        (fur_stmt::get_operand): New.
        (fur_stmt::get_phi_operand): New.
        (fur_stmt::query): New.
        (class fur_depend): New.  Statement source and process dependencies.
        (fur_depend::fur_depend): New.
        (fur_depend::register_dependency): New.
        (class fur_list): New.  List source for operands.
        (fur_list::fur_list): New.
        (fur_list::get_operand): New.
        (fur_list::get_phi_operand): New.
        (fold_range): New.  Instantiate appropriate fur_source class and fold.
        (fold_using_range::range_of_range_op): Use new API.
        (fold_using_range::range_of_address): Ditto.
        (fold_using_range::range_of_phi): Ditto.
        (imple_ranger::fold_range_internal): Use fur_depend class.
        (fold_using_range::range_of_ssa_name_with_loop_info): Use new API.
        * gimple-range.h (class fur_source): Now a base class.
        (class fur_stmt): New.
        (fold_range): New prototypes.
        (fur_source::fur_source): Delete.

2021-06-08  Andrew Pinski  <apinski@marvell.com>

        PR tree-optimization/25290
        * tree-ssa-phiopt.c (xor_replacement): Delete.
        (tree_ssa_phiopt_worker): Delete use of xor_replacement.
        (match_simplify_replacement): Allow one cheap preparation
        statement that can be moved to before the if.

2021-06-08  Pat Haugen  <pthaugen@linux.ibm.com>

        * config/rs6000/power10.md (power10-fused-load, power10-fused-store,
        power10-fused_alu, power10-fused-vec, power10-fused-branch): New.

2021-06-08  Jeff Law  <jeffreyalaw@gmail.com>

        * config/h8300/logical.md (andqi3_1): Move BCLR case into define_insn_and_split.
        Create length attribute on define_insn_and_split.  Only split for cases which we
        know will use AND.
        (andqi3_1<cczn>): Renamed from andqi3_1_clobber_flags.  Only handle AND here and
        fix length computation.
        (b<code><mode>msx): Combine QImode and HImode H8/SX patterns using iterator.

2021-06-08  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/100923
        * tree-ssa-sccvn.c (valueize_refs_1): Take a pointer to
        the operand vector to be valueized.
        (valueize_refs): Likewise.
        (valueize_shared_reference_ops_from_ref): Adjust.
        (valueize_shared_reference_ops_from_call): Likewise.
        (vn_reference_lookup_3): Likewise.
        (vn_reference_lookup_pieces): Likewise.  Re-valueize
        with honoring availability when we are about to create
        the ao_ref and valueized before.
        (vn_reference_lookup): Likewise.
        (vn_reference_insert_pieces): Adjust.

2021-06-08  Richard Biener  <rguenther@suse.de>

        * tree-vectorizer.h (_slp_instance::root_stmt): Change to...
        (_slp_instance::root_stmts): ... a vector.
        (SLP_INSTANCE_ROOT_STMT): Rename to ...
        (SLP_INSTANCE_ROOT_STMTS): ... this.
        (slp_root::root): Change to...
        (slp_root::roots): ... a vector.
        (slp_root::slp_root): Adjust.
        * tree-vect-slp.c (_slp_instance::location): Adjust.
        (vect_free_slp_instance): Release the root stmt vector.
        (vect_build_slp_instance): Adjust.
        (vect_analyze_slp): Likewise.
        (_bb_vec_info::~_bb_vec_info): Likewise.
        (vect_slp_analyze_operations): Likewise.
        (vect_bb_vectorization_profitable_p): Likewise.  Adjust
        costs for the root stmt.
        (vect_slp_check_for_constructors): Gather all BIT_INSERT_EXPRs
        as root stmts.
        (vect_slp_analyze_bb_1): Simplify by marking all root stmts
        as pure_slp.
        (vectorize_slp_instance_root_stmt): Adjust.
        (vect_schedule_slp): Likewise.

2021-06-08  Aldy Hernandez  <aldyh@redhat.com>

        * gimple-ssa-evrp.c (class ssa_equiv_stack): New.
        (ssa_equiv_stack::ssa_equiv_stack): New.
        (ssa_equiv_stack::~ssa_equiv_stack): New.
        (ssa_equiv_stack::enter): New.
        (ssa_equiv_stack::leave): New.
        (ssa_equiv_stack::push_replacement): New.
        (ssa_equiv_stack::get_replacement): New.
        (is_pointer_ssa): New.
        (class pointer_equiv_analyzer): New.
        (pointer_equiv_analyzer::pointer_equiv_analyzer): New.
        (pointer_equiv_analyzer::~pointer_equiv_analyzer): New.
        (pointer_equiv_analyzer::set_global_equiv): New.
        (pointer_equiv_analyzer::set_cond_equiv): New.
        (pointer_equiv_analyzer::get_equiv): New.
        (pointer_equiv_analyzer::enter): New.
        (pointer_equiv_analyzer::leave): New.
        (pointer_equiv_analyzer::get_equiv_expr): New.
        (pta_valueize): New.
        (pointer_equiv_analyzer::visit_stmt): New.
        (pointer_equiv_analyzer::visit_edge): New.
        (hybrid_folder::value_of_expr): Call PTA.
        (hybrid_folder::value_on_edge): Same.
        (hybrid_folder::pre_fold_bb): New.
        (hybrid_folder::post_fold_bb): New.
        (hybrid_folder::pre_fold_stmt): New.
        (rvrp_folder::pre_fold_bb): New.
        (rvrp_folder::post_fold_bb): New.
        (rvrp_folder::pre_fold_stmt): New.
        (rvrp_folder::value_of_expr): Call PTA.
        (rvrp_folder::value_on_edge): Same.

2021-06-08  Jakub Jelinek  <jakub@redhat.com>

        PR c++/100957
        * tree-inline.c (copy_tree_body_r): For OMP_CLAUSE_DEPEND don't
        check TREE_CODE if OMP_CLAUSE_DECL is NULL.

2021-06-08  Richard Biener  <rguenther@suse.de>

        PR middle-end/100951
        * tree-vect-generic.c (expand_vector_piecewise): Build a
        VECTOR_CST if all elements are constant.
        (expand_vector_condition): Likewise.
        (lower_vec_perm): Likewise.
        (expand_vector_conversion): Likewise.

2021-06-08  Martin Liska  <mliska@suse.cz>

        * doc/invoke.texi: Document new param evrp-sparse-threshold.

2021-06-08  Martin Liska  <mliska@suse.cz>

        * genautomata.c (create_automata): Fix typo.

2021-06-08  Kewen Lin  <linkw@linux.ibm.com>

        PR tree-optimization/100794
        * tree-predcom.c (tree_predictive_commoning_loop): Add parameter
        allow_unroll_p and only allow unrolling when it's true.
        (tree_predictive_commoning): Add parameter allow_unroll_p and
        adjust for it.
        (run_tree_predictive_commoning): Likewise.
        (pass_predcom::gate): Check flag_tree_loop_vectorize and
        global_options_set.x_flag_predictive_commoning.
        (pass_predcom::execute): Adjust for allow_unroll_p.

2021-06-08  Kewen Lin  <linkw@linux.ibm.com>

        * tree-predcom.c (execute_pred_commoning): Remove update_ssa call.
        (tree_predictive_commoning_loop): Factor some cleanup stuffs into
        lambda function cleanup, remove scev_reset call, and adjust return
        value.
        (tree_predictive_commoning): Adjust for different changed values,
        only set flag TODO_update_ssa_only_virtuals if changed.
        (pass_data pass_data_predcom): Remove TODO_update_ssa_only_virtuals
        from todo_flags_finish.

2021-06-07  Andrew MacLeod  <amacleod@redhat.com>

        * gimple-range-cache.cc (class sbr_sparse_bitmap): New.
        (sbr_sparse_bitmap::sbr_sparse_bitmap): New.
        (sbr_sparse_bitmap::bitmap_set_quad): New.
        (sbr_sparse_bitmap::bitmap_get_quad): New.
        (sbr_sparse_bitmap::set_bb_range): New.
        (sbr_sparse_bitmap::get_bb_range): New.
        (sbr_sparse_bitmap::bb_range_p): New.
        (block_range_cache::block_range_cache): initialize bitmap obstack.
        (block_range_cache::~block_range_cache): Destruct obstack.
        (block_range_cache::set_bb_range): Decide when to utilze the
        sparse on entry cache.
        * gimple-range-cache.h (block_range_cache): Add bitmap obstack.
        * params.opt (-param=evrp-sparse-threshold): New.

2021-06-07  Andrew MacLeod  <amacleod@redhat.com>

        * bitmap.c (bitmap_set_aligned_chunk): New.
        (bitmap_get_aligned_chunk): New.
        (test_aligned_chunk): New.
        (bitmap_c_tests): Call test_aligned_chunk.
        * bitmap.h (bitmap_set_aligned_chunk, bitmap_get_aligned_chunk): New.

2021-06-07  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/100637
        * config/i386/i386-expand.c (ix86_expand_vector_init_duplicate):
        Handle V4QI mode.
        (ix86_expand_vector_init_one_nonzero): Ditto.
        (ix86_expand_vector_init_one_var): Ditto.
        (ix86_expand_vector_init_general): Ditto.
        * config/i386/mmx.md (vec_initv4qiqi): New expander.

2021-06-07  Jeff Law  <jeffreyalaw@gmail.com>

        * config/h8300/movepush.md: Change most _clobber_flags
        patterns to instead use <cczn> subst.
        (movsi_cczn): New pattern with usable CC cases split out.
        (movsi_h8sx_cczn): Likewise.

2021-06-07  Martin Liska  <mliska@suse.cz>

        * common/common-target.def: Split long lines and replace them
        with '\n\'.
        * target.def: Likewise.
        * doc/tm.texi: Re-generated.

2021-06-07  Jakub Jelinek  <jakub@redhat.com>

        PR target/100887
        * fold-const.c (fold_read_from_vector): Return NULL if trying to
        read from a CONSTRUCTOR with vector type elements.

2021-06-07  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/100898
        * tree-inline.c (copy_bb): Only use gimple_call_arg_ptr if memcpy
        should copy any arguments.  Don't call gimple_call_num_args
        on id->call_stmt or call_stmt more than once.

2021-06-07  liuhongt  <hongtao.liu@intel.com>

        PR target/100885
        * config/i386/sse.md (*sse4_1_zero_extendv8qiv8hi2_3): Refine
        constraints.
        (<insn>v4siv4di2): Delete constraints for define_expand.

2021-06-07  liuhongt  <hongtao.liu@intel.com>

        PR target/82735
        * config/i386/i386-expand.c (ix86_expand_builtin): Remove
        assignment of cfun->machine->has_explicit_vzeroupper.
        * config/i386/i386-features.c
        (ix86_add_reg_usage_to_vzerouppers): Delete.
        (ix86_add_reg_usage_to_vzeroupper): Ditto.
        (rest_of_handle_insert_vzeroupper): Remove
        ix86_add_reg_usage_to_vzerouppers, add df_analyze at the end
        of the function.
        (gate): Remove cfun->machine->has_explicit_vzeroupper.
        * config/i386/i386-protos.h (ix86_expand_avx_vzeroupper):
        Declared.
        * config/i386/i386.c (ix86_insn_callee_abi): New function.
        (ix86_initialize_callee_abi): Ditto.
        (ix86_expand_avx_vzeroupper): Ditto.
        (ix86_hard_regno_call_part_clobbered): Adjust for vzeroupper
        ABI.
        (TARGET_INSN_CALLEE_ABI): Define as ix86_insn_callee_abi.
        (ix86_emit_mode_set): Call ix86_expand_avx_vzeroupper
        directly.
        * config/i386/i386.h (struct GTY(()) machine_function): Delete
        has_explicit_vzeroupper.
        * config/i386/i386.md (enum unspec): New member
        UNSPEC_CALLEE_ABI.
        (ABI_DEFAULT,ABI_VZEROUPPER,ABI_UNKNOWN): New
        define_constants for insn callee abi index.
        * config/i386/predicates.md (vzeroupper_pattern): Adjust.
        * config/i386/sse.md (UNSPECV_VZEROUPPER): Deleted.
        (avx_vzeroupper): Call ix86_expand_avx_vzeroupper.
        (*avx_vzeroupper): Rename to ..
        (avx_vzeroupper_callee_abi): .. this, and adjust pattern as
        call_insn which has a special vzeroupper ABI.
        (*avx_vzeroupper_1): Deleted.

2021-06-07  liuhongt  <hongtao.liu@intel.com>

        PR target/82735
        * df-scan.c (df_get_call_refs): When call_insn is a fake call,
        it won't use stack pointer reg.
        * final.c (leaf_function_p): When call_insn is a fake call, it
        won't affect caller as a leaf function.
        * reg-stack.c (callee_clobbers_any_stack_reg): New.
        (subst_stack_regs): When call_insn doesn't clobber any stack
        reg, don't clear the arguments.
        * rtl.c (shallow_copy_rtx): Don't clear flag used when orig is
        a insn.
        * shrink-wrap.c (requires_stack_frame_p): No need for stack
        frame for a fake call.
        * rtl.h (FAKE_CALL_P): New macro.

2021-06-06  Eric Botcazou  <ebotcazou@adacore.com>

        * config/sparc/sparc-protos.h (order_regs_for_local_alloc): Rename
        to...
        (sparc_order_regs_for_local_alloc): ...this.
        (sparc_leaf_reg_remap): Declare.
        * config/sparc/sparc.h (ADJUST_REG_ALLOC_ORDER): Adjust.
        (LEAF_REG_REMAP): Reimplement as call to sparc_leaf_reg_remap.
        * config/sparc/sparc.c (leaf_reg_remap): Delete.
        (order_regs_for_local_alloc): Rename to...
        (sparc_order_regs_for_local_alloc): ...this.
        (sparc_leaf_reg_remap): New function.
        (sparc_conditional_register_usage): Do not modify leaf_reg_remap.

2021-06-06  David Edelsohn  <dje.gcc@gmail.com>

        * config/rs6000/rs6000.c (rs6000_xcoff_asm_output_aligned_decl_common):
        Use assemble_name to output BSS section name.

2021-06-06  Uroš Bizjak  <ubizjak@gmail.com>

        * config/i386/constraints.md (Bs):
        Remove boolean operators from match_test RTX.
        (Bw): Ditto.
        (L): Ditto.
        (M): Use "mode" variable instead of GET_MODE (op) in match_test RTX.
        (Wz): Ditto.

2021-06-06  Martin Liska  <mliska@suse.cz>

        * doc/extend.texi: Add missing @headitem.
        * doc/invoke.texi: Likewise.
        * doc/objc.texi: Likewise.

2021-06-06  Martin Liska  <mliska@suse.cz>

        * genhooks.c (emit_findices): Remove unused function.
        (emit_documentation): Do not call emit_findices
        and do not search for @Fcode directives.

2021-06-06  Martin Liska  <mliska@suse.cz>

        * doc/invoke.texi: Remove extra character.

2021-06-05  Kewen Lin  <linkw@linux.ibm.com>

        * config/sh/sh.md (doloop_end_split): Fix empty split condition.

2021-06-05  Kewen Lin  <linkw@linux.ibm.com>

        * config/sparc/sparc.md (*snedi<W:mode>_zero_vis3,
        *neg_snedi<W:mode>_zero_subxc, *plus_snedi<W:mode>_zero,
        *plus_plus_snedi<W:mode>_zero, *minus_snedi<W:mode>_zero,
        *minus_minus_snedi<W:mode>_zero): Fix empty split condition.

2021-06-05  Kewen Lin  <linkw@linux.ibm.com>

        * config/or1k/or1k.md (*movdi): Fix empty split condition.

2021-06-05  Kewen Lin  <linkw@linux.ibm.com>

        * config/mips/mips.md (<anonymous>, bswapsi2, bswapdi2): Fix empty
        split condition.

2021-06-05  Kewen Lin  <linkw@linux.ibm.com>

        * config/m68k/m68k.md (*zero_extend_inc, *zero_extend_dec,
        *zero_extendsidi2): Fix empty split condition.

2021-06-05  Jeff Law  <jeffreyalaw@gmail.com>

        * config/h8300/addsub.md: Fix split condition in define_insn_and_split
        patterns.
        * config/h8300/bitfield.md: Likewise.
        * config/h8300/combiner.md: Likewise.
        * config/h8300/divmod.md: Likewise.
        * config/h8300/extensions.md: Likewise.
        * config/h8300/jumpcall.md: Likewise.
        * config/h8300/movepush.md: Likewise.
        * config/h8300/multiply.md: Likewise.
        * config/h8300/other.md: Likewise.
        * config/h8300/shiftrotate.md: Likewise.
        * config/h8300/logical.md: Likewise.  Fix split pattern to use
        code iterator that somehow slipped through.

2021-06-04  Tobias Burnus  <tobias@codesourcery.com>

        PR middle-end/100905
        * tree-nested.c (convert_nonlocal_omp_clauses,
        convert_local_omp_clauses): Handle OMP_CLAUSE_BIND.

2021-06-04  Martin Sebor  <msebor@redhat.com>

        PR middle-end/100732
        * gimple-fold.c (gimple_fold_builtin_sprintf): Avoid folding calls
        with either source or destination argument of invalid type.
        * tree-ssa-uninit.c (maybe_warn_pass_by_reference): Avoid checking
        calls with arguments of invalid type.

2021-06-04  Martin Sebor  <msebor@redhat.com>

        * attribs.c (init_attr_rdwr_indices): Use VLA bounds in the expected
        order.
        (attr_access::vla_bounds): Also handle VLA bounds.

2021-06-04  Uroš Bizjak  <ubizjak@gmail.com>

        * config/i386/predicates.md (GOT_memory_operand):
        Implement using match_code RTXes.
        (GOT32_symbol_operand): Ditto.

2021-06-04  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/100637
        * config/i386/i386-expand.c (ix86_expand_vector_init_duplicate):
        Handle V2HI mode.
        (ix86_expand_vector_init_general): Ditto.
        Use SImode instead of word_mode for logic operations
        when GET_MODE_SIZE (mode) < UNITS_PER_WORD.
        (expand_vec_perm_even_odd_1): Assert that V2HI mode should be
        implemented by expand_vec_perm_1.
        (expand_vec_perm_broadcast_1): Assert that V2HI and V4HI modes
        should be implemented using standard shuffle patterns.
        (ix86_vectorize_vec_perm_const): Handle V2HImode.  Add V4HI and
        V2HI modes to modes, implementable with shuffle for one operand.
        * config/i386/mmx.md (*punpckwd): New insn_and_split pattern.
        (*pshufw_1): New insn pattern.
        (*vec_dupv2hi): Ditto.
        (vec_initv2hihi): New expander.

2021-06-04  Kewen Lin  <linkw@linux.ibm.com>

        * config/arm/vfp.md (no_literal_pool_df_immediate,
        no_literal_pool_sf_immediate): Fix empty split condition.

2021-06-04  Kewen Lin  <linkw@linux.ibm.com>

        * config/i386/i386.md (*load_tp_x32_zext, *add_tp_x32_zext,
        *tls_dynamic_gnu2_combine_32): Fix empty split condition.
        * config/i386/sse.md (*<sse2_avx2>_pmovmskb_lt,
        *<sse2_avx2>_pmovmskb_zext_lt, *sse2_pmovmskb_ext_lt,
        *<sse4_1_avx2>_pblendvb_lt): Likewise.

2021-06-04  Jakub Jelinek  <jakub@redhat.com>

        PR target/100887
        * config/i386/i386-expand.c (ix86_expand_vector_init): Handle
        concatenation from half-sized modes with TImode elements.

2021-06-04  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc.c (arc_override_options): Disable millicode
        thunks when RF16 is on.

2021-06-04  Haochen Gui  <guihaoc@gcc.gnu.org>

        * config/rs6000/rs6000.h (PROMOTE_MODE): Remove.

2021-06-04  Haochen Gui  <guihaoc@gcc.gnu.org>

        * config/rs6000/rs6000-call.c (rs6000_promote_function_mode):
        Replace PROMOTE_MODE marco with its content.

2021-06-03  Kewen Lin  <linkw@linux.ibm.com>

        * config/cris/cris.md (*addi_reload): Fix empty split condition.

2021-06-03  Jim Wilson  <jimw@sifive.com>

        * config.gcc (riscv*-*-*): If --with-riscv-attribute not used,
        turn it on for all riscv targets.

2021-06-03  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/100637
        * config/i386/i386-expand.c (ix86_expand_vector_set):
        Handle V2HI and V4QI modes.
        (ix86_expand_vector_extract): Ditto.
        * config/i386/mmx.md (*pinsrw): New insn pattern.
        (*pinsrb): Ditto.
        (*pextrw): Ditto.
        (*pextrw_zext): Ditto.
        (*pextrb): Ditto.
        (*pextrb_zext): Ditto.
        (vec_setv2hi): New expander.
        (vec_extractv2hihi): Ditto.
        (vec_setv4qi): Ditto.
        (vec_extractv4qiqi): Ditto.
        (vec_setv8qi): Enable only for TARGET_SSE4_1.
        (vec_extractv8qiqi): Ditto.

2021-06-03  Aaron Sawdey  <acsawdey@linux.ibm.com>

        * config/rs6000/genfusion.pl (gen_logical_addsubf): Fix input
        order to subf instruction.
        * config/rs6000/fusion.md: Regenerate.

2021-06-03  Aldy Hernandez  <aldyh@redhat.com>

        * calls.c (get_size_range): Use range_of_expr instead of
        determine_value_range.
        * tree-affine.c (expr_to_aff_combination): Same.
        * tree-data-ref.c (split_constant_offset): Same.
        * tree-vrp.c (determine_value_range_1): Remove.
        (determine_value_range): Remove.
        * tree-vrp.h (determine_value_range): Remove.

2021-06-03  Aldy Hernandez  <aldyh@redhat.com>

        * function-tests.c (test_ranges): Call gimple_range_tests.
        * gimple-range-cache.cc (ranger_cache::range_of_expr): Pass stmt
        to get_tree_range.
        * gimple-range.cc (fur_source::get_operand): Do not call
        get_tree_range or gimple_range_global.
        get_tree_range.
        (get_tree_range): Move to value-query.cc.
        Call get_arith_expr_range.
        (gimple_ranger::range_of_expr): Add argument to get_tree_range.
        Include gimple-range-tests.cc.
        * gimple-range.h (fold_range): Add argument.
        (get_tree_range): Remove.
        * selftest.h (gimple_range_tests): New.
        * value-query.cc (global_range_query::range_of_expr): Add
        stmt argument.
        (range_query::get_tree_range): Move from gimple-range.cc.
        * value-query.h (class range_query): Add get_tree_range and
        get_arith_expr_range.  Make fur_source a friend.
        * vr-values.c (vr_values::range_of_expr): Pass stmt to
        get_tree_range.
        * gimple-range-tests.cc: New file.

2021-06-03  Aldy Hernandez  <aldyh@redhat.com>

        * gimple-range.cc (gimple_ranger::export_global_ranges): Call
          update_global_range.
        * value-query.cc (update_global_range): New.
        * value-query.h (update_global_range): New.

2021-06-03  David Malcolm  <dmalcolm@redhat.com>

        * diagnostic-show-locus.c (diagnostic_show_locus): Don't reject
        printing the same location twice if there are fix-it hints,
        multiple locations, or a label.

2021-06-03  Andre Vieira  <andre.simoesdiasvieira@arm.com>

        * tree-vect-loop.c (vect_transform_loop): Use main loop's various'
        thresholds to narrow the upper bound on epilogue iterations.

2021-06-03  Christophe Lyon  <christophe.lyon@linaro.org>

        * config/arm/mve.md (mve_vabsq_f<mode>): Use 'abs' instead of unspec.
        (mve_vabsq_s<mode>): Likewise.
        * config/arm/neon.md (abs<mode>2): Rename to neon_abs<mode>2.
        * config/arm/unspecs.md (VABSQ_F, VABSQ_S): Delete.
        * config/arm/vec-common.md (neg<mode>2): Rename to
        <absneg_str><mode>2.

2021-06-03  Claudiu Zissulescu  <claziss@synopsys.com>

        * common/config/arc/arc-common.c (arc_option_optimization_table):
        Remove malign-call.
        * config/arc/arc.c (arc_unalign_branch_p): Remove unused function.
        * config/arc/arc.h (TARGET_MIXED_CODE): Remove macro.
        (INDEX_REG_CLASS): Only refer to GENERAL_REGS.
        * config/arc/arc.md (abssi2_mixed): Remove pattern.
        * config/arc/arc.opt (munalign-prob-threshold): Mark it obsolete.
        (malign-call): Likewise.
        (mmixed-code): Likewise.
        * doc/invoke.texi (ARC): Update doc.

2021-06-03  Martin Liska  <mliska@suse.cz>

        * common.opt: Use proper Enum values.
        * opts.c (COVERAGE_SANITIZER_OPT): Remove.
        (parse_sanitizer_options): Handle only sanitizer_opts.
        (common_handle_option): Just assign value.

2021-06-03  Eric Botcazou  <ebotcazou@adacore.com>

        PR ipa/99122
        * tree-inline.c (inline_forbidden_p): Remove test on return type.

2021-06-03  Eric Botcazou  <ebotcazou@adacore.com>

        * dwarf2out.c (loc_list_from_tree_1) <FUNCTION_DECL>: Also generate
        DW_OP_GNU_variable_value referencing an existing DIE at file scope.
        (type_byte_size): Inline into...
        (add_byte_size_attribute): ...this and call add_scalar_info.

2021-06-03  Eric Botcazou  <ebotcazou@adacore.com>

        * dwarf2out.c (mem_loc_descriptor) <UDIV>: Fix typo.
        (typed_binop_from_tree): New function.
        (loc_list_from_tree_1) <EXACT_DIV_EXPR>: For an unsigned type,
        turn a divide by a power of 2 into a shift.
        <CEIL_DIV_EXPR>: For an unsigned type, use a signed divide if the
        size of the mode is lower than DWARF2_ADDR_SIZE; otherwise, do a
        typed divide by calling typed_binop_from_tree.

2021-06-03  Eric Botcazou  <ebotcazou@adacore.com>

        * dwarf2out.c (scompare_loc_descriptor): Fix head comment.
        (is_handled_procedure_type): Likewise.
        (struct loc_descr_context): Add strict_signedness field.
        (resolve_args_picking_1): Deal with DW_OP_[GNU_]deref_type,
        DW_OP_[GNU_]convert and DW_OP_[GNU_]reinterpret.
        (resolve_args_picking): Minor tweak.
        (function_to_dwarf_procedure): Initialize strict_signedness field.
        (type_byte_size): Likewise.
        (field_byte_offset): Likewise.
        (gen_descr_array_type_die): Likewise.
        (gen_variant_part): Likewise.
        (loc_list_from_tree_1) <CALL_EXPR>: Tidy up and set strict_signedness
        to true when a context is present before evaluating the arguments.
        <COND_EXPR>: Do not generate a useless comparison with zero.
        When dereferencing an address, if strict_signedness is true and the
        type is small and signed, use DW_OP_deref_type to do the dereference
        and then DW_OP_convert to convert back to the generic type.

2021-06-03  Jakub Jelinek  <jakub@redhat.com>

        PR c++/100859
        * tree-inline.c (copy_tree_body_r): Handle iterators on
        OMP_CLAUSE_AFFINITY or OMP_CLAUSE_DEPEND.

2021-06-03  Kewen Lin  <linkw@linux.ibm.com>

        * config/arc/arc.md (*bbit_di): Remove.

2021-06-02  Christoph Muellner  <cmuellner@gcc.gnu.org>

        PR rtl-optimization/100264
        * ree.c (get_sub_rtx): Ignore SET expressions without register
        destinations and remove assertion, as it is not valid anymore
        with this new behaviour.
        (merge_def_and_ext): Eliminate destination check for register
        as such SET expressions can't occur anymore.
        (combine_reaching_defs): Likewise.

2021-06-02  Jakub Jelinek  <jakub@redhat.com>

        PR target/100841
        * config/xtensa/xtensa.h (LEAF_REG_REMAP): Cast REGNO to int to avoid
        -Wtype-limits warnings.
        (DWARF_FRAME_REGISTER): Rewrite into ternary operator with addition
        in operands to avoid -Wsign-compare warnings.

2021-06-02  Pat Haugen  <pthaugen@linux.ibm.com>

        * config/rs6000/rs6000-logue.c (rs6000_emit_prologue): Use
        gen_frame_store.

2021-06-02  Vineet Gupta  <vgupta@synopsys.com>

        * config/arc/arc.h (TARGET_CPU_DEFAULT): Change to hs38_linux.

2021-06-02  Ilya Leoshkevich  <iii@linux.ibm.com>

        * config/s390/s390.md(*ashrdi3_31<setcc><cconly>): Use a single
        constraint.
        * config/s390/subst.md(cconly_subst): Use a single constraint
        in (match_scratch).

2021-06-02  Martin Liska  <mliska@suse.cz>

        * ipa-icf.h: Use auto_vec for memory_access_types.

2021-06-02  Jeff Law  <jeffreyalaw@gmail.com>

        * config/h8300/h8300-protos.h (compute_a_shift_length): Drop unused
        argument from prototype.
        (output_logical_op): Add rtx_code argument.
        (compute_logical_op_length): Likewise.
        * config/h8300/h8300.c (h8300_and_costs): Pass additional argument
        to compute_a_shift_length.
        (output_logical_op); New argument with the rtx code rather than
        extracting it from an operand.  Handle QImode too.
        (compute_logical_op_length): Similary.
        (compute_a_shift_length): Drop unused argument.
        * config/h8300/h8300.md (logicals): New code iterator.
        * config/h8300/logical.md (<code><mode>3 expander): Combine
        the "and" expander with the "ior"/"xor" expander.
        (bclr<mode>msx): Combine the QI/HI mode patterns.
        (<logical><mode>3 insns): Use code iterator rather than match_operator.
        Handle QImode as well.   Update call to output_logical_op and
        compute_logical_op_length to pass in rtx_code
        Fix split condition on all define_insn_and_split patterns.
        (one_cmpl<mode>2<cczn>): Use <cczn> to support both clobbering
        the flags and setting ZN via existing define_subst.
        * config/h8300/shiftrotate.md: Drop unused argument from
        calls to compute_a_shift_length.
        Signed-off-by: Jeff Law <jeffreyalaw@gmail.com>

2021-06-01  Andrew Pinski  <apinski@marvell.com>

        PR tree-optimization/25290
        * tree-ssa-phiopt.c (match_simplify_replacement):
        New function.
        (tree_ssa_phiopt_worker): Use match_simplify_replacement.
        (two_value_replacement): Change the comment about
        conditional_replacement.
        (conditional_replacement): Delete.

2021-06-01  Andrew Pinski  <apinski@marvell.com>

        PR tree-optimization/95481
        * tree-tailcall.c (find_tail_calls): Handle empty typed
        return decls.

2021-06-01  Andrew Pinski  <apinski@marvell.com>

        * gimplify.c (zero_sized_field_decl): Delete
        (zero_sized_type): Delete
        (gimplify_init_ctor_eval): Use is_empty_type instead
        of zero_sized_field_decl.
        (gimplify_modify_expr): Use is_empty_type instead of
        zero_sized_type.

2021-06-01  Jason Merrill  <jason@redhat.com>

        PR c++/91859
        * tree.h (CALL_FROM_NEW_OR_DELETE_P): Adjust comment.

2021-06-01  Jason Merrill  <jason@redhat.com>

        PR c++/94492
        * diagnostic.h (warning_enabled_at): Declare.
        * diagnostic.c (diagnostic_enabled): Factor out from...
        (diagnostic_report_diagnostic): ...here.
        (warning_enabled_at): New.

2021-06-01  Aldy Hernandez  <aldyh@redhat.com>

        * gimple-ssa-evrp.c: Enable exporting of global ranges.

2021-06-01  Martin Liska  <mliska@suse.cz>

        PR other/100826
        * doc/invoke.texi: Mention that -fgcse-after-reload
        is enabled with -O3.

2021-06-01  liuhongt  <hongtao.liu@intel.com>

        PR tree-optimization/98365
        * tree-if-conv.c (strip_nop_cond_scalar_reduction): New function.
        (is_cond_scalar_reduction): Handle nop_expr in cond scalar reduction.
        (convert_scalar_cond_reduction): Ditto.
        (predicate_scalar_phi): Ditto.

2021-06-01  Andrew MacLeod  <amacleod@redhat.com>

        PR tree-optimization/100781
        * gimple-range-cache.cc (ranger_cache::ranger_cache): Enable new
        value calculation by default.
        (ranger_cache::enable_new_values): New.
        (ranger_cache::disable_new_values): New.
        (ranger_cache::push_poor_value): Check if new values are allowed.
        * gimple-range-cache.h (class ranger_cache): New member/methods.
        * gimple-range.cc (gimple_ranger::range_of_expr): Check for debug
        statement, and disable/renable new value calculation.

2021-06-01  Andrew MacLeod  <amacleod@redhat.com>

        * gimple-range-cache.cc (ranger_cache::ssa_range_in_bb): Delete.
        (ranger_cache::range_of_def): New.
        (ranger_cache::entry_range): New.
        (ranger_cache::exit_range): New.
        (ranger_cache::range_of_expr): Adjust.
        (ranger_cache::range_on_edge): Adjust.
        (ranger_cache::propagate_cache): Call exit_range directly.
        * gimple-range-cache.h (class ranger_cache): Adjust.

2021-06-01  Andrew MacLeod  <amacleod@redhat.com>

        * gimple-range-cache.cc (ranger_cache::ranger_cache): Adjust for
        gori_compute being a member rather than base class.
        dervied call to member call.
        (ranger_cache::dump): No longer dump gori_map.
        (ranger_cache::dump_bb): New.
        (ranger_cache::get_non_stale_global_range): Adjust for gori_compute
        being a member rather than base class.
        (ranger_cache::set_global_range): Ditto.
        (ranger_cache::ssa_range_in_bb): Ditto.
        (ranger_cache::range_of_expr): New.
        (ranger_cache::range_on_edge): New.
        (ranger_cache::block_range): Adjust for gori_computes.  Debug changes.
        (ranger_cache::propagate_cache):  Adjust debugging output.
        (ranger_cache::fill_block_cache): Adjust for gori_computes.  Debug
        output changes.
        * gimple-range-cache.h (class ranger_cache): Make gori_compute a
        member, and inherit from range_query instead.
        (ranger_cache::dump_bb): New. split from dump.
        * gimple-range-gori.cc (gori_compute::ssa_range_in_bb): Delete.
        (gori_compute::expr_range_at_stmt): Delete.
        (gori_compute::compute_name_range_op): Delete.
        (gori_compute::compute_operand_range_switch): Add fur_source.
        (gori_compute::compute_operand_range): Add fur_source param, inline
        old compute_name_range_op and optimize_logical_operands.
        (struct tf_range): Delete.
        (gori_compute::logical_combine): Adjust
        (gori_compute::optimize_logical_operands): Delete.
        (gori_compute::compute_logical_operands_in_chain): Delete.
        (gori_compute::compute_logical_operands): Adjust.
        (gori_compute::compute_operand1_range): Adjust to fur_source.
        (gori_compute::compute_operand2_range): Ditto.
        (gori_compute::compute_operand1_and_operand2_range): Ditto.
        (gori_compute::outgoing_edge_range_p): Add range_query parameter,
        and adjust to fur_source.
        * gimple-range-gori.h (class gori_compute): Simplify and adjust to
        range_query and fur_source.
        * gimple-range.cc (gimple_ranger::range_on_edge): Query range_on_edge
        from the ranger_cache..
        (gimple_ranger::fold_range_internal): Adjust to base class change of
        ranger_cache.
        (gimple_ranger::dump_bb): Adjust dump.
        * gimple-range.h (gimple_ranger):export gori computes object.

2021-06-01  Andrew MacLeod  <amacleod@redhat.com>

        PR tree-optimization/100774
        * gimple-range-cache.cc (ranger_cache::get_non_stale_global_range):
        Constant values are also not stale.
        (ranger_cache::set_global_range): Range invariant values should also
        have the correct timestamp.

2021-05-31  Martin Liska  <mliska@suse.cz>

        * tree-streamer-in.c (unpack_ts_function_decl_value_fields):
        Unpack FUNCTION_DECL_DECL_TYPE.
        * tree-streamer-out.c (pack_ts_function_decl_value_fields):
        Stream FUNCTION_DECL_DECL_TYPE instead of
        DECL_IS_OPERATOR_NEW_P.
        * tree.h (set_function_decl_type): Use FUNCTION_DECL_DECL_TYPE
        macro.
        (DECL_IS_OPERATOR_NEW_P): Likewise.
        (DECL_IS_OPERATOR_DELETE_P): Likewise.
        (DECL_LAMBDA_FUNCTION_P): Likewise.

2021-05-31  Richard Biener  <rguenther@suse.de>

        PR c++/88601
        * internal-fn.c (expand_SHUFFLEVECTOR): Define.
        * internal-fn.def (SHUFFLEVECTOR): New.
        * internal-fn.h (expand_SHUFFLEVECTOR): Declare.
        * doc/extend.texi: Document __builtin_shufflevector.

2021-05-31  Peter Bergner  <bergner@linux.ibm.com>

        PR target/99842
        * config/rs6000/predicates.md(mma_assemble_input_operand): Allow
        indexed form addresses.

2021-05-29  Jeff Law  <jlaw@tachyum.com>

        * config/h8300/h8300.c (h8300_emit_stack_adjustment): Drop unused
        parameter.  Call callers fixed.
        (push): Likewise.
        (output_plussi): Add FALLTHRU markers.
        (h8300_shift_needs_scratch_p): Add gcc_unreachable marker.

2021-05-29  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/99928
        * gimplify.c (gimplify_scan_omp_clauses): For taskloop simd
        combined with parallel, make sure to add shared clause to
        parallel for explicit linear clause.

2021-05-29  Aldy Hernandez  <aldyh@redhat.com>

        PR tree-optimization/100787
        * gimple-ssa-evrp.c: Disable exporting of global ranges.

2021-05-28  Jason Merrill  <jason@redhat.com>

        * tree-iterator.h (struct tree_stmt_iterator): Add operator++,
        operator--, operator*, operator==, and operator!=.
        (class tsi_range): New.

2021-05-28  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/100778
        * tree-vect-slp.c (vect_build_slp_tree_1): Prevent possibly
        trapping ops in different BBs.

2021-05-28  Richard Biener  <rguenther@suse.de>

        PR ipa/100791
        * tree-inline.c (copy_bb): When processing __builtin_va_arg_pack
        copy fntype from original call.

2021-05-28  Martin Liska  <mliska@suse.cz>

        PR gcov-profile/100751
        * doc/gcov.texi: Revert partially a hunk that was wrong.

2021-05-28  Cooper Qu  <cooper.qu@linux.alibaba.com>

        * config/csky/csky-linux-elf.h (HAVE_sync_compare_and_swapqi):
        Defined.
        (HAVE_sync_compare_and_swaphi): Likewise.
        (HAVE_sync_compare_and_swapsi): Likewise.

2021-05-28  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/99928
        * tree.h (OMP_CLAUSE_MAP_IMPLICIT): Define.

2021-05-28  Tobias Burnus  <tobias@codesourcery.com>

        * gimplify.c (gimplify_omp_affinity): New.
        (gimplify_scan_omp_clauses): Call it; remove affinity clause afterwards.
        * tree-core.h (enum omp_clause_code): Add OMP_CLAUSE_AFFINITY.
        * tree-pretty-print.c (dump_omp_clause): Handle OMP_CLAUSE_AFFINITY.
        * tree.c (omp_clause_num_ops, omp_clause_code_name): Add clause.
        (walk_tree_1): Handle OMP_CLAUSE_AFFINITY.

2021-05-28  Joern Rennecke  <joern.rennecke@riscy-ip.com>
            Richard Biener   <rguenther@suse.de>

        * match.pd <popcount & / + pattern matching>:
        When generating popcount directly fails, try doing it in two halves.

2021-05-28  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * Makefile.in (generated_files): Add gimple-match.c and
        generic-match.c

2021-05-28  Joern Rennecke  <joern.rennecke@embecosm.com>

        * gensupport.c (alter_predicate_for_insn): Handle MATCH_DUP.

2021-05-28  Joern Rennecke  <joern.rennecke@embecosm.com>

        * gensupport.c (alter_constraints): Add MATCH_SCRATCH case.

2021-05-28  Kewen Lin  <linkw@linux.ibm.com>

        PR tree-optimization/99398
        * tree-ssa-forwprop.c (simplify_permutation): Optimize some cases
        where the fed operands are CTOR/CST and propagated through
        VIEW_CONVERT_EXPR.  Call vec_perm_indices::new_shrunk_vector.
        * vec-perm-indices.c (vec_perm_indices::new_shrunk_vector): New
        function.
        * vec-perm-indices.h (vec_perm_indices::new_shrunk_vector): New
        declare.

2021-05-27  Uroš Bizjak  <ubizjak@gmail.com>

        * config/i386/mmx.md (addv2sf3): Do not call
        ix86_fixup_binary_operands_no_copy.
        (subv2sf3): Ditto.
        (mulv2sf3): Ditto.
        (<smaxmin:code>v2sf3): Ditto.
        (<plusminus:insn><MMXMODEI:mode>3): Ditto.
        (<plusminus:insn><VI_32:mode>3): Remove expander.
        (<plusminus:insn><VI_32:mode>3): Rename from
        "*<plusminus:insn><VI_32:mode>3".
        (mulv4hi): Do not call ix86_fixup_binary_operands_no_copy.
        (mulv2hi3): Remove expander.
        (mulv2hi3): Rename from *mulv2hi3.
        (<s>mulv2hi3_highpart): Remove expander.
        (<s>mulv2hi3_highpart): Rename from *<s>mulv2hi3_highpart.
        (<smaxmin:code><MMXMODE14:mode>3): Rename from
        "*mmx_<smaxmin:code><MMXMODE14:mode>3".
        (<smaxmin:code><SMAXMIN_MMXMODEI:mode>3): Remove expander.
        (SMAXMIN_MMXMODEI): Remove mode iterator.
        (<smaxmin:code>v4hi3): New expander.
        (<smaxmin:code>v4qi3): Rename from *<smaxmin:code>v4qi3.
        (<smaxmin:code>v2hi3): Rename from *<smaxmin:code>v2hi3.
        (<smaxmin:code><SMAXMIN_VI_32:mode>3): Remove expander.
        (SMAXMIN_VI_32): Remove mode iterator.
        (<umaxmin:code><MMXMODE24:mode>3): Rename from
        "*mmx_<umaxmin:code><MMXMODE24:mode>3".
        (<umaxmin:code><UMAXMIN_MMXMODEI:mode>3): Remove expander.
        (UMAXMIN_MMXMODEI): Remove mode iterator.
        (<umaxmin:code>v8qi3): New expander.
        (<umaxmin:code>v4qi3): Rename from *<umaxmin:code>v4qi3.
        (<umaxmin:code>v2hi3): Rename from *<umaxmin:code>v2hi3.
        (<umaxmin:code><SMAXMIN_VI_32:mode>3): Remove expander.
        (UMAXMIN_VI_32): Remove mode iterator.
        (<any_shift:insn>v2hi3): Remove expander.
        (<any_shift:insn>v2hi3): Rename from *<any_shift:insn>v2hi3.
        (<any_logic:code><MMXMODEI:mode>3): Do not call
        ix86_fixup_binary_operands_no_copy.
        (<any_logic:code><VI_32:mode>3): Remove expander.
        (<any_logic:code><VI_32:mode>3): Rename from
        "*<any_logic:code><VI_32:mode>3".
        (uavg<mode>3_ceil): Do not call ix86_fixup_binary_operands_no_copy.
        * config/i386/sse.md (div<VF2:mode>3): Do not call
        ix86_fixup_binary_operands_no_copy.
        (div<VF1:mode>3): Ditto.
        (<maxmin:code><VI8_AVX2_AVX512F:mode>3): Ditto.
        (smulhrsv4hi3): Ditto.
        (smulhrsv2hi3): Ditto.

2021-05-27  Martin Sebor  <msebor@redhat.com>

        * ggc.h (gt_ggc_mx): Add overloads for all integers.
        (gt_pch_nx):  Same.
        * hash-map.h (class hash_map): Add pch_nx_helper overloads for all
        integers.
        (hash_map::operator==): New function.

2021-05-27  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/100637
        * config/i386/i386-expand.c (ix86_expand_int_sse_cmp):
        For TARGET_XOP bypass SSE comparisons for all supported vector modes.
        * config/i386/mmx.md (*xop_maskcmp<MMXMODEI:mode>3): New insn pattern.
        (*xop_maskcmp<VI_32:mode>3): Ditto.
        (*xop_maskcmp_uns<MMXMODEI:mode>3): Ditto.
        (*xop_maskcmp_uns<VI_32:mode>3): Ditto.

2021-05-27  Richard Earnshaw  <rearnsha@arm.com>

        PR target/100767
        * config/arm/arm.c (arm_configure_build_target): Remove parameter
        opts_set, directly check opts parameters for being non-null.
        (arm_option_restore): Update call to arm_configure_build_target.
        (arm_option_override): Likewise.
        (arm_can_inline_p): Likewise.
        (arm_valid_target_attribute_tree): Likewise.
        * config/arm/arm-c.c (arm_pragma_target_parse): Likewise.
        * config/arm/arm-protos.h (arm_configure_build_target): Adjust
        prototype.

2021-05-27  Aldy Hernandez  <aldyh@redhat.com>

        * vr-values.c (simplify_conversion_using_ranges): Use
        get_range_query instead of get_global_range_query.

2021-05-27  Aldy Hernandez  <aldyh@redhat.com>

        * gimple-range.cc (get_range_global): Move to value-query.cc.
        (gimple_range_global): Same.
        (get_global_range_query): Same.
        (global_range_query::range_of_expr): Same.
        * gimple-range.h (class global_range_query): Move to
        value-query.h.
        (gimple_range_global): Same.
        * tree-ssanames.c (get_range_info): Move to value-query.cc.
        (get_ptr_nonnull): Same.
        * tree-ssanames.h (get_range_info): Remove.
        (get_ptr_nonnull): Remove.
        * value-query.cc (get_ssa_name_range_info): Move from
        tree-ssanames.c.
        (get_ssa_name_ptr_info_nonnull): Same.
        (get_range_global): Move from gimple-range.cc.
        (gimple_range_global): Same.
        (get_global_range_query): Same.
        (global_range_query::range_of_expr): Same.
        * value-query.h (class global_range_query): Move from
        gimple-range.h.
        (gimple_range_global): Same.

2021-05-27  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/100637
        * config/i386/mmx.md (uavgv4qi3_ceil): New insn pattern.
        (uavgv2hi3_ceil): Ditto.

2021-05-26  Eric Botcazou  <ebotcazou@adacore.com>

        PR c/100653
        * doc/extend.texi (scalar_storage_order): Rephrase slightly.

2021-05-26  Aldy Hernandez  <aldyh@redhat.com>

        * tree-ssanames.c (get_range_info): Merge both copies of
        get_range_info into one that works with irange.
        * tree-ssanames.h (get_range_info): Remove version that works on
        wide_ints.

2021-05-26  Aldy Hernandez  <aldyh@redhat.com>

        * builtins.c (check_nul_terminated_array): Convert to get_range_query.
        (expand_builtin_strnlen): Same.
        (determine_block_size): Same.
        * fold-const.c (expr_not_equal_to): Same.
        * gimple-fold.c (size_must_be_zero_p): Same.
        * gimple-match-head.c: Include gimple-range.h.
        * gimple-pretty-print.c (dump_ssaname_info): Convert to get_range_query.
        * gimple-ssa-warn-restrict.c
        (builtin_memref::extend_offset_range): Same.
        * graphite-sese-to-poly.c (add_param_constraints): Same.
        * internal-fn.c (get_min_precision): Same.
        * ipa-fnsummary.c (set_switch_stmt_execution_predicate): Same.
        * ipa-prop.c (ipa_compute_jump_functions_for_edge): Same.
        * match.pd: Same.
        * tree-data-ref.c (split_constant_offset): Same.
        (dr_step_indicator): Same.
        * tree-dfa.c (get_ref_base_and_extent): Same.
        * tree-scalar-evolution.c (iv_can_overflow_p): Same.
        * tree-ssa-loop-niter.c (refine_value_range_using_guard): Same.
        (determine_value_range): Same.
        (record_nonwrapping_iv): Same.
        (infer_loop_bounds_from_signedness): Same.
        (scev_var_range_cant_overflow): Same.
        * tree-ssa-phiopt.c (two_value_replacement): Same.
        * tree-ssa-pre.c (insert_into_preds_of_block): Same.
        * tree-ssa-reassoc.c (optimize_range_tests_to_bit_test): Same.
        * tree-ssa-strlen.c (handle_builtin_stxncpy_strncat): Same.
        (get_range): Same.
        (dump_strlen_info): Same.
        (set_strlen_range): Same.
        (maybe_diag_stxncpy_trunc): Same.
        (get_len_or_size): Same.
        (handle_integral_assign): Same.
        * tree-ssa-structalias.c (find_what_p_points_to): Same.
        * tree-ssa-uninit.c (find_var_cmp_const): Same.
        * tree-switch-conversion.c (bit_test_cluster::emit): Same.
        * tree-vect-patterns.c (vect_get_range_info): Same.
        (vect_recog_divmod_pattern): Same.
        * tree-vrp.c (intersect_range_with_nonzero_bits): Same.
        (register_edge_assert_for_2): Same.
        (determine_value_range_1): Same.
        * tree.c (get_range_pos_neg): Same.
        * vr-values.c (vr_values::get_lattice_entry): Same.
        (vr_values::update_value_range): Same.
        (simplify_conversion_using_ranges): Same.

2021-05-26  Aldy Hernandez  <aldyh@redhat.com>

        * gimple-ssa-warn-alloca.c (alloca_call_type): Use
          get_range_query instead of query argument.
        (pass_walloca::execute): Enable and disable global ranger.

2021-05-26  Aldy Hernandez  <aldyh@redhat.com>

        * gimple-ssa-evrp.c (rvrp_folder::rvrp_folder): Call
        enable_ranger.
        (rvrp_folder::~rvrp_folder): Call disable_ranger.
        (hybrid_folder::hybrid_folder): Call enable_ranger.
        (hybrid_folder::~hybrid_folder): Call disable_ranger.

2021-05-26  Aldy Hernandez  <aldyh@redhat.com>

        * function.c (allocate_struct_function): Set cfun->x_range_query.
        * function.h (struct function): Declare x_range_query.
        (get_range_query): New.
        (get_global_range_query): New.
        * gimple-range-cache.cc (ssa_global_cache::ssa_global_cache):
        Remove call to safe_grow_cleared.
        * gimple-range.cc (get_range_global): New.
        (gimple_range_global): Move from gimple-range.h.
        (get_global_range_query): New.
        (global_range_query::range_of_expr): New.
        (enable_ranger): New.
        (disable_ranger): New.
        * gimple-range.h (gimple_range_global): Move to gimple-range.cc.
        (class global_range_query): New.
        (enable_ranger): New.
        (disable_ranger): New.
        * gimple-ssa-evrp.c (evrp_folder::~evrp_folder): Rename
        dump_all_value_ranges to dump.
        * tree-vrp.c (vrp_prop::finalize): Same.
        * value-query.cc (range_query::dump): New.
        * value-query.h (range_query::dump): New.
        * vr-values.c (vr_values::dump_all_value_ranges): Rename to...
        (vr_values::dump): ...this.
        * vr-values.h (class vr_values): Rename dump_all_value_ranges to
        dump and make virtual.

2021-05-26  Uroš Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.c (ix86_autovectorize_vector_modes):
        Add V4QImode and V16QImode for TARGET_SSE2.
        * doc/sourcebuild.texi (Vector-specific attributes):
        Add vect64 and vect32 description.

2021-05-26  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * gimple-range-gori.cc (range_def_chain::register_dependency):
        Resize m_def_chain when needed.

2021-05-26  Christophe Lyon  <christophe.lyon@linaro.org>

        * config/arm/mve.md (mve_vaddvq_<supf><mode>): Prefix with '@'.
        * config/arm/neon.md (reduc_plus_scal_<mode>): Move to ..
        * config/arm/vec-common.md: .. here. Add support for MVE.

2021-05-26  Jakub Jelinek  <jakub@redhat.com>

        * config/epiphany/epiphany.c (epiphany_print_operand_address): Remove
        register keywords.
        * config/microblaze/microblaze.c (microblaze_legitimize_address,
        call_internal1,
        microblaze_option_override, print_operand): Likewise.
        * config/microblaze/microblaze.md (call_internal_plt,
        call_value_intern_plt, call_value_intern): Likewise.
        * config/arm/aout.h (ASM_OUTPUT_ALIGN): Likewise.
        * config/iq2000/iq2000.md (call_internal1, call_value_internal1,
        call_value_multiple_internal1): Likewise.
        * config/bfin/bfin.c (symbolic_reference_mentioned_p): Likewise.

2021-05-26  Jan-Benedict Glaw  <jbglaw@lug-owl.de>

        * config/arc/arc.c (arc_address_cost, arc_print_operand_address,
        arc_ccfsm_advance, symbolic_reference_mentioned_p,
        arc_raw_symbolic_reference_mentioned_p): Remove register
        keyword.

2021-05-26  Jakub Jelinek  <jakub@redhat.com>

        PR libgomp/100573
        * omp-low.c: Include omp-offload.h.
        (create_omp_child_function): If current_function_decl has
        "omp declare target" attribute and is_gimple_omp_offloaded,
        remove that attribute from the copy of attribute list and
        add "omp target entrypoint" attribute instead.
        (lower_omp_target): Mark .omp_data_sizes.* and .omp_data_kinds.*
        variables for offloading if in omp_maybe_offloaded_ctx.
        * omp-offload.c (pass_omp_target_link::execute): Nullify second
        argument to GOMP_target_data_ext in offloaded code.

2021-05-26  Geng Qi  <gengqi@linux.alibaba.com>

        * config/csky/csky.c (csky_can_change_mode_class): Delete.
        For csky, HF/SF mode use the low bits of VREGS.

2021-05-26  Eric Botcazou  <ebotcazou@adacore.com>

        * gimplify.c (gimplify_decl_expr): Do not clear TREE_READONLY on a
        DECL which is a reference for OMP.

2021-05-26  Martin Liska  <mliska@suse.cz>

        PR gcov-profile/100751
        * doc/gcov.texi: Document that __gcov_dump can be called just
        once and that __gcov_reset resets run-time counters.

2021-05-26  Martin Liska  <mliska@suse.cz>

        * doc/install.texi: Port relevant part from install-old.texi
        and re-generate list of CPUs and systems.

2021-05-26  Martin Liska  <mliska@suse.cz>

        * Makefile.in: Remove it.
        * doc/include/fdl.texi: Update next/previous chapters.
        * doc/install.texi: Likewise.
        * doc/install-old.texi: Removed.

2021-05-26  Geng Qi  <gengqi@linux.alibaba.com>

        * config/csky/csky.c (ck810_legitimate_index_p): Support
        "base + index" with DF mode.
        * config/csky/constraints.md ("Y"): New constraint for memory operands
        without index register.
        * config/csky/csky_insn_fpuv2.md (fpuv3_movdf): Use "Y" instead of "m"
        when mov between memory and general registers, and lower their priority.
        * config/csky/csky_insn_fpuv3.md (fpuv2_movdf): Likewise.

2021-05-26  Geng Qi  <gengqi@linux.alibaba.com>

        * config/csky/csky.c (TARGET_PROMOTE_PROTOTYPES): Delete.

2021-05-26  Geng Qi  <gengqi@linux.alibaba.com>

        * config/csky/csky.md (untyped_call): Emit clobber for return
        registers to mark them used.

2021-05-26  Geng Qi  <gengqi@linux.alibaba.com>

        * config/csky/csky.md (cskyv2_sextend_ldbs): New.

2021-05-26  Andrew Pinski  <apinski@marvell.com>

        * match.pd (x < 0 ? ~y : y): New patterns.

2021-05-26  Andrew Pinski  <apinski@marvell.com>

        * match.pd (A?CST1:CST2): Add simplifcations for A?0:+-1, A?+-1:0,
        A?POW2:0 and A?0:POW2.

2021-05-25  Andrew MacLeod  <amacleod@redhat.com>

        * gimple-range-gori.cc (class logical_stmt_cache): Delete
        (logical_stmt_cache::logical_stmt_cache ): Delete.
        (logical_stmt_cache::~logical_stmt_cache): Delete.
        (logical_stmt_cache::cache_entry::dump): Delete.
        (logical_stmt_cache::get_range): Delete.
        (logical_stmt_cache::cached_name ): Delete.
        (logical_stmt_cache::same_cached_name): Delete.
        (logical_stmt_cache::cacheable_p): Delete.
        (logical_stmt_cache::slot_diagnostics ): Delete.
        (logical_stmt_cache::dump): Delete.
        (gori_compute_cache::gori_compute_cache): Delete.
        (gori_compute_cache::~gori_compute_cache): Delete.
        (gori_compute_cache::compute_operand_range): Delete.
        (gori_compute_cache::cache_stmt): Delete.
        * gimple-range-gori.h (gori_compute::compute_operand_range): Remove
        virtual.
        (class gori_compute_cache): Delete.

2021-05-25  Andrew MacLeod  <amacleod@redhat.com>

        * gimple-range.cc (fold_using_range::range_of_range_op): Use m_gori
        intead of m_cache.
        (fold_using_range::range_of_address): Adjust.
        (fold_using_range::range_of_phi): Adjust.
        * gimple-range.h (class fur_source): Adjust.
        (fur_source::fur_source): Adjust.

2021-05-25  Andrew MacLeod  <amacleod@redhat.com>

        * gimple-range-gori.cc (gori_compute::expr_range_at_stmt): Rename
        from expr_range_in_bb and adjust.
        (gori_compute::compute_name_range_op): Adjust.
        (gori_compute::optimize_logical_operands): Adjust.
        (gori_compute::compute_logical_operands_in_chain): Adjust.
        (gori_compute::compute_operand1_range): Adjust.
        (gori_compute::compute_operand2_range): Adjust.
        (ori_compute_cache::cache_stmt): Adjust.
        * gimple-range-gori.h (gori_compute): Rename prototype.

2021-05-25  Andrew MacLeod  <amacleod@redhat.com>

        * gimple-range.cc (gimple_ranger::range_of_expr): Non-null should be
        checked only after range_of_stmt, not range_on_entry.
        (gimple_ranger::range_on_entry): Check for non-null in any
        predecessor block, if it is not already non-null.
        (gimple_ranger::range_on_exit): DOnt check for non-null after
        range on entry call.
        (gimple_ranger::dump_bb): New.  Split from dump.
        (gimple_ranger::dump): Adjust.
        * gimple-range.h (class gimple_ranger): Adjust.

2021-05-25  Andrew MacLeod  <amacleod@redhat.com>

        * gimple-range-cache.cc (struct range_timestamp): Delete.
        (class temporal_cache): Adjust.
        (temporal_cache::get_timestamp): Delete.
        (temporal_cache::set_dependency): Delete.
        (temporal_cache::temporal_value): Adjust.
        (temporal_cache::current_p): Take dependencies as params.
        (temporal_cache::set_timestamp): Adjust.
        (temporal_cache::set_always_current): Adjust.
        (ranger_cache::get_non_stale_global_range): Adjust.
        (ranger_cache::register_dependency): Delete.
        * gimple-range-cache.h (class range_cache): Adjust.

2021-05-25  Andrew MacLeod  <amacleod@redhat.com>

        * gimple-range-gori.cc (range_def_chain::range_def_chain): init
        bitmap obstack.
        (range_def_chain::~range_def_chain): Dispose of obstack rather than
        each individual bitmap.
        (range_def_chain::set_import): New.
        (range_def_chain::get_imports): New.
        (range_def_chain::chain_import_p): New.
        (range_def_chain::register_dependency): Rename from build_def_chain
        and set imports.
        (range_def_chain::def_chain_in_bitmap_p): New.
        (range_def_chain::add_def_chain_to_bitmap): New.
        (range_def_chain::has_def_chain): Just check first depenedence.
        (range_def_chain::get_def_chain): Process imports, use generic
        register_dependency routine.
        (range_def_chain::dump): New.
        (gori_map::gori_map): Allocate import list.
        (gori_map::~gori_map): Release imports.
        (gori_map::exports): Check for past allocated block size.
        (gori_map::imports): New.
        (gori_map::def_chain_in_export_p): Delete.
        (gori_map::is_import_p): New.
        (gori_map::maybe_add_gori): Handle imports.
        (gori_map::dump): Adjust output, add imports.
        (gori_compute::has_edge_range_p): Remove def_chain_in_export call.
        (gori_export_iterator::gori_export_iterator): New.
        (gori_export_iterator::next): New.
        (gori_export_iterator::get_name): New.
        * gimple-range-gori.h (range_def_chain): Add imports and direct
        dependecies via struct rdc.
        (range_def_chain::depend1): New.
        (range_def_chain::depend2): New.
        (class gori_map): Adjust.
        (FOR_EACH_GORI_IMPORT_NAME): New.
        (FOR_EACH_GORI_EXPORT_NAME): New.
        (class gori_export_iterator): New.

2021-05-25  Andrew MacLeod  <amacleod@redhat.com>

        * gimple-range-cache.cc (ranger_cache::ranger_cache):  Move initial
        export cache filling to here.
        * gimple-range-gori.cc (gori_compute::gori_compute) : From Here.

2021-05-25  Andrew MacLeod  <amacleod@redhat.com>

        * gimple-range-gori.cc (range_def_chain): Move to gimple-range-gori.h.
        (gori_map): Move to gimple-range-gori.h.
        (gori_compute::gori_compute): Adjust.
        (gori_compute::~gori_compute): Delete.
        (gori_compute::compute_operand_range_switch): Adjust.
        (gori_compute::compute_operand_range): Adjust.
        (gori_compute::compute_logical_operands): Adjust.
        (gori_compute::has_edge_range_p ): Adjust.
        (gori_compute::set_range_invariant): Delete.
        (gori_compute::dump): Adjust.
        (gori_compute::outgoing_edge_range_p): Adjust.
        * gimple-range-gori.h (class range_def_chain): Relocate here.
        (class gori_map): Relocate here.
        (class gori_compute): Inherit from gori_map, and adjust.

2021-05-25  Aldy Hernandez  <aldyh@redhat.com>

        * value-range.cc (range_tests_legacy): Use
        build_nonstandard_integer_type instead of int and short.

2021-05-25  Eric Botcazou  <ebotcazou@adacore.com>

        * gimplify.c (gimplify_decl_expr): Clear TREE_READONLY on the DECL
        when really creating an initialization statement for it.

2021-05-25  Eric Botcazou  <ebotcazou@adacore.com>

        * tree-inline.c (setup_one_parameter): Fix thinko in new condition.

2021-05-25  Kito Cheng  <kito.cheng@sifive.com>

        * config/riscv/riscv.h (ASM_SPEC): Pass -mno-relax.

2021-05-25  Martin Liska  <mliska@suse.cz>

        PR tree-optimization/92860
        PR target/99592
        * optc-save-gen.awk: Remove exceptions.

2021-05-25  Martin Liska  <mliska@suse.cz>

        * asan.h (sanitize_coverage_p): New function.
        * doc/extend.texi: Document it.
        * fold-const.c (fold_range_test): Use sanitize_flags_p
        instead of flag_sanitize_coverage.
        (fold_truth_andor): Likewise.
        * sancov.c: Likewise.
        * tree-ssa-ifcombine.c (ifcombine_ifandif): Likewise.
        * ipa-inline.c (sanitize_attrs_match_for_inline_p): Handle
        -fsanitize-coverage when inlining.

2021-05-25  Cooper Qu  <cooper.qu@linux.alibaba.com>

        * config/csky/csky-modes.def : Fix copyright.

2021-05-25  Cooper Qu  <cooper.qu@linux.alibaba.com>

        * config/csky/csky-modes.def : Amend copyright.
        * config/csky/csky_insn_fpuv2.md : Likewise.
        * config/csky/csky_insn_fpuv3.md : Likewise.

2021-05-25  Richard Biener  <rguenther@suse.de>

        PR middle-end/100727
        * calls.c (initialize_argument_information): Explicitely test
        for WITH_SIZE_EXPR.
        * gimple-expr.c (mark_addressable): Skip outer WITH_SIZE_EXPR.

2021-05-25  Geng Qi  <gengqi@linux.alibaba.com>

        * config/csky/csky.h (FRAME_POINTER_REGNUM): Use
        HARD_FRAME_POINTER_REGNUM and FRAME_POINTER_REGNUM instead of
        the signle definition. The signle definition may not work well
        at simplify_subreg_regno().
        (HARD_FRAME_POINTER_REGNUM): New.
        (ELIMINABLE_REGS): Add for HARD_FRAME_POINTER_REGNUM.
        * config/csky/csky.c (get_csky_live_regs, csky_can_eliminate,
        csky_initial_elimination_offset, csky_expand_prologue,
        csky_expand_epilogue): Add for HARD_FRAME_POINTER_REGNUM.

2021-05-25  Geng Qi  <gengqi@linux.alibaba.com>

        * config/csky/csky.c (csky_option_override):
        Init csky_arch_isa_features[] in advance, so TARGET_DSP
        and TARGET_DIV can be set well.

2021-05-25  Geng Qi  <gengqi@linux.alibaba.com>

        * config/csky/constraints.md ("l", "h"): Delete.
        * config/csky/csky.h (reg_class, REG_CLASS_NAMES,
        REG_CLASS_CONTENTS):  Delete LO_REGS and HI_REGS.
        * config/csky/csky.c (regno_reg_classm,
        csky_secondary_reload, csky_register_move_cost):
        Use HILO_REGS instead of LO_REGS and HI_REGS.

2021-05-25  Geng Qi  <gengqi@linux.alibaba.com>

        * config/csky/constraints.md ("W"): New constriant for mem operand
        with base reg, index register.
        ("Q"): Renamed and modified "csky_valid_fpuv2_mem_operand" to
        "csky_valid_mem_constraint_operand" to deal with both "Q" and "W"
        constraint.
        ("Dv"): New constraint for const double value that can be used at
        fmovi instruction.
        * config/csky/csky-modes.def (HFmode): New mode.
        * config/csky/csky-protos.h (csky_valid_fpuv2_mem_operand): Rename
        to "csky_valid_mem_constraint_operand" and support new constraint
        "W".
        (csky_get_movedouble_length): New.
        (fpuv3_output_move): New.
        (fpuv3_const_double): New.
        * config/csky/csky.c (csky_option_override): New arch CK860 with fpv3.
        (decompose_csky_address): Refine.
        (csky_print_operand): New "CONST_DOUBLE" operand.
        (csky_output_move): Support fpv3 instructions.
        (csky_get_movedouble_length): New.
        (fpuv3_output_move): New.
        (fpuv3_const_double): New.
        (csky_emit_compare): Cover float comparsion.
        (csky_emit_compare_float): Refine.
        (csky_vaild_fpuv2_mem_operand): Rename to
        "csky_valid_mem_constraint_operand" and support new constraint "W".
        (ck860_rtx_costs): New.
        (csky_rtx_costs): Add the cost calculation of CK860.
        (regno_reg_class): New vregs for fpuv3.
        (csky_dbx_regno): Likewise.
        (csky_cpu_cpp_builtins): New builtin macro for fpuv3.
        (csky_conditional_register_usage): Suporrot fpuv3.
        (csky_dwarf_register_span): Suporrot fpuv3.
        (csky_init_builtins, csky_mangle_type): Support "__fp16" type.
        (ck810_legitimate_index_p): Support fp16.
        * config/csky/csky.h (TARGET_TLS): ADD CK860.
        (CSKY_VREG_P, CSKY_VREG_LO_P, CSKY_VREG_HI_P): Support fpuv3.
        (TARGET_SINGLE_FPU): Support fpuv3.
        (TARGET_SUPPORT_FPV3): New.
        (FIRST_PSEUDO_REGISTER): Change to 202 to hold the new fpuv3 registers.
        (FIXED_REGISTERS, CALL_REALLY_USED_REGISTERS, REGISTER_NAMES,
         REG_CLASS_CONTENTS): Support fpuv3.
        * config/csky/csky.md (movsf): Move to cksy_insn_fpu.md and refine.
        (csky_movsf_fpv2): Likewise.
        (ck801_movsf): Likewise.
        (csky_movsf): Likewise.
        (movdf): Likewise.
        (csky_movdf_fpv2): Likewise.
        (ck801_movdf): Likewise.
        (csky_movdf): Likewise.
        (movsicc): Refine. Use "comparison_operatior" instead of
        "ordered_comparison_operatior".
        (addsicc): Likewise.
        (CSKY_FIRST_VFP3_REGNUM, CSKY_LAST_VFP3_REGNUM): New constant.
        (call_value_internal_vh): New.
        * config/csky/csky_cores.def (CK860): New arch and cpu.
        (fpv3_hf): New.
        (fpv3_hsf): New.
        (fpv3_sdf): New.
        (fpv3): New.
        * config/csky/csky_insn_fpu.md: Refactor. Separate all float patterns
        into emit-patterns and match-patterns, remain the emit-patterns here,
        and move the match-patterns to csky_insn_fpuv2.md or
        csky_insn_fpuv3.md.
        * config/csky/csky_insn_fpuv2.md: New file for fpuv2 instructions.
        * config/csky/csky_insn_fpuv3.md: New file and new patterns for fpuv3
        isntructions.
        * config/csky/csky_isa.def (fcr): New.
        (fpv3_hi): New.
        (fpv3_hf): New.
        (fpv3_sf): New.
        (fpv3_df): New.
        (CK860): New definition for ck860.
        * config/csky/csky_tables.opt (ck860): New processors ck860,
        ck860f. And new arch ck860.
        (fpv3_hf): New.
        (fpv3_hsf): New.
        (fpv3_hdf): New.
        (fpv3): New.
        * config/csky/predicates.md (csky_float_comparsion_operator): Delete
        "geu", "gtu", "leu", "ltu", which will never appear at float comparison.
        * config/csky/t-csky-elf: Support 860.
        * config/csky/t-csky-linux: Likewise.
        * doc/md.texi: Add "Q" and "W" constraints for C-SKY.

2021-05-24  Aaron Sawdey  <acsawdey@linux.ibm.com>

        * config/rs6000/genfusion.pl (gen_logical_addsubf): Refactor to
        add generation of logical-add and add-logical fusion pairs.
        * config/rs6000/rs6000-cpus.def: Add new fusion to ISA 3.1 mask
        and powerpc mask.
        * config/rs6000/rs6000.c (rs6000_option_override_internal): Turn on
        logical-add and add-logical fusion by default.
        * config/rs6000/rs6000.opt: Add -mpower10-fusion-logical-add and
        -mpower10-fusion-add-logical options.
        * config/rs6000/fusion.md: Regenerate file.

2021-05-24  Aldy Hernandez  <aldyh@redhat.com>

        * value-range.cc (irange::legacy_equal_p): Check type when
        comparing VR_VARYING types.
        (range_tests_legacy): Test comparing VARYING ranges of different
        sizes.

2021-05-24  Wilco Dijkstra  <wdijkstr@arm.com>

        * config/aarch64/aarch64.c (neoversen1_tunings):
        Enable AARCH64_EXTRA_TUNE_CHEAP_SHIFT_EXTEND.

2021-05-24  Wilco Dijkstra  <wdijkstr@arm.com>

        * config/aarch64/aarch64.c (aarch64_classify_symbol): Use GOT for
        extern weak symbols.  Limit symbol offsets for non-GOT symbols with
        PIC/PIE.

2021-05-24  Christophe Lyon  <christophe.lyon@linaro.org>

        * config/arm/neon.md (vec_load_lanesxi<mode>)
        (vec_store_lanexoi<mode>): Move ...
        * config/arm/vec-common.md: here.

2021-05-24  Christophe Lyon  <christophe.lyon@linaro.org>

        * config/arm/neon.md (vec_load_lanesoi<mode>)
        (vec_store_lanesoi<mode>): Move ...
        * config/arm/vec-common.md: here.

2021-05-24  liuhongt  <hongtao.liu@intel.com>

        PR target/100660
        * config/i386/i386.c (ix86_gimple_fold_builtin): Replacing
        stmt with GIMPLE_NOP when lhs doesn't exist.

2021-05-23  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/100722
        * config/i386/mmx.md (*push<VI_32:mode>2_rex64):
        New instruction pattern.
        (*push<VI_32:mode>2): Ditto.
        (push splitter for SSE registers): New splitter.

2021-05-23  Andrew Pinski  <apinski@marvell.com>

        * match.pd ((A & C) != 0 ? D : 0): Limit to non pointer types.

2021-05-22  Aaron Sawdey  <acsawdey@linux.ibm.com>

        * config/rs6000/genfusion.pl (gen_addadd): Fix incorrect attr types.
        * config/rs6000/fusion.md: Regenerate file.

2021-05-21  Aaron Sawdey  <acsawdey@linux.ibm.com>

        * config/rs6000/genfusion.pl (gen_addadd): New function.
        * config/rs6000/fusion.md: Regenerate file.
        * config/rs6000/rs6000-cpus.def: Add
        OPTION_MASK_P10_FUSION_2ADD to masks.
        * config/rs6000/rs6000.c (rs6000_option_override_internal):
        Handle default value of OPTION_MASK_P10_FUSION_2ADD.
        * config/rs6000/rs6000.opt: Add -mpower10-fusion-2add.

2021-05-21  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/99928
        * tree.h (OMP_CLAUSE_FIRSTPRIVATE_IMPLICIT_TARGET): Define.
        * gimplify.c (enum gimplify_omp_var_data): Fix up
        GOVD_MAP_HAS_ATTACHMENTS value, add GOVD_FIRSTPRIVATE_IMPLICIT.
        (omp_lastprivate_for_combined_outer_constructs): If combined target
        has GOVD_FIRSTPRIVATE_IMPLICIT set for the decl, change it to
        GOVD_MAP | GOVD_SEEN.
        (gimplify_scan_omp_clauses): Set GOVD_FIRSTPRIVATE_IMPLICIT for
        firstprivate clauses with OMP_CLAUSE_FIRSTPRIVATE_IMPLICIT.
        (gimplify_adjust_omp_clauses): For firstprivate clauses with
        OMP_CLAUSE_FIRSTPRIVATE_IMPLICIT either clear that bit and
        OMP_CLAUSE_FIRSTPRIVATE_IMPLICIT_TARGET too, or remove it and
        let it be replaced by implicit map clause.

2021-05-21  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/99928
        * gimplify.c (omp_lastprivate_for_combined_outer_constructs): New
        function.
        (gimplify_scan_omp_clauses) <case OMP_CLAUSE_LASTPRIVATE>: Use it.
        (gimplify_omp_for): Likewise.

2021-05-21  Thomas Schwinge  <thomas@codesourcery.com>

        PR middle-end/90115
        * omp-low.c (oacc_privatization_candidate_p): Reject 'static',
        'external' in blocks.

2021-05-21  Thomas Schwinge  <thomas@codesourcery.com>

        PR middle-end/90115
        * flag-types.h (enum openacc_privatization): New.
        * params.opt (-param=openacc-privatization): New.
        * doc/invoke.texi (openacc-privatization): Document it.
        * omp-general.h (get_openacc_privatization_dump_flags): New
        function.
        * omp-low.c (oacc_privatization_candidate_p): Add diagnostics.
        * omp-offload.c (execute_oacc_device_lower)
        <IFN_UNIQUE_OACC_PRIVATE>: Re-work diagnostics.
        * target.def (goacc.adjust_private_decl): Add 'location_t'
        parameter.
        * doc/tm.texi: Regenerate.
        * config/gcn/gcn-protos.h (gcn_goacc_adjust_private_decl): Adjust.
        * config/gcn/gcn-tree.c (gcn_goacc_adjust_private_decl): Likewise.
        * config/nvptx/nvptx.c (nvptx_goacc_adjust_private_decl):
        Likewise.  Preserve it for...
        (nvptx_goacc_expand_var_decl): ... use here.

2021-05-21  Thomas Schwinge  <thomas@codesourcery.com>

        * doc/sourcebuild.texi (Other attributes): Document '__OPTIMIZE__'
        DejaGnu selector.

2021-05-21  Thomas Schwinge  <thomas@codesourcery.com>

        PR middle-end/90115
        * omp-low.c (oacc_privatization_candidate_p): New function.
        (oacc_privatization_scan_clause_chain)
        (oacc_privatization_scan_decl_chain): Use it.  Also
        'gcc_checking_assert' that we're not seeing duplicates.

2021-05-21  Thomas Schwinge  <thomas@codesourcery.com>

        PR middle-end/90115
        * omp-offload.c (execute_oacc_device_lower): Skip processing if no
        work to be done.

2021-05-21  Thomas Schwinge  <thomas@codesourcery.com>

        PR middle-end/90115
        * omp-offload.c (execute_oacc_device_lower): Explain.

2021-05-21  Thomas Schwinge  <thomas@codesourcery.com>

        PR middle-end/90115
        * omp-offload.c (execute_oacc_device_lower)
        <IFN_UNIQUE_OACC_PRIVATE>: Diagnose and handle for 'level == -1'
        case, too.
        * internal-fn.c (expand_UNIQUE): Don't expect
        'IFN_UNIQUE_OACC_PRIVATE'.

2021-05-21  Thomas Schwinge  <thomas@codesourcery.com>

        PR middle-end/90115
        * omp-low.c (lower_omp_for): Don't evaluate OpenMP 'for' clauses.

2021-05-21  Thomas Schwinge  <thomas@codesourcery.com>

        PR middle-end/90115
        * config/nvptx/nvptx.c (nvptx_goacc_adjust_private_decl)
        (nvptx_goacc_expand_var_decl): Tighten.

2021-05-21  Julian Brown  <julian@codesourcery.com>
            Chung-Lin Tang  <cltang@codesourcery.com>
            Thomas Schwinge  <thomas@codesourcery.com>

        PR middle-end/90115
        * doc/tm.texi.in (TARGET_GOACC_EXPAND_VAR_DECL)
        (TARGET_GOACC_ADJUST_PRIVATE_DECL): Add documentation hooks.
        * doc/tm.texi: Regenerate.
        * expr.c (expand_expr_real_1): Expand decls using the
        expand_var_decl OpenACC hook if defined.
        * internal-fn.c (expand_UNIQUE): Handle IFN_UNIQUE_OACC_PRIVATE.
        * internal-fn.h (IFN_UNIQUE_CODES): Add OACC_PRIVATE.
        * omp-low.c (omp_context): Add oacc_privatization_candidates
        field.
        (lower_oacc_reductions): Add PRIVATE_MARKER parameter.  Insert
        before fork.
        (lower_oacc_head_tail): Add PRIVATE_MARKER parameter.  Modify
        private marker's gimple call arguments, and pass it to
        lower_oacc_reductions.
        (oacc_privatization_scan_clause_chain)
        (oacc_privatization_scan_decl_chain, lower_oacc_private_marker):
        New functions.
        (lower_omp_for, lower_omp_target, lower_omp_1): Use these.
        * omp-offload.c (convert.h): Include.
        (oacc_loop_xform_head_tail): Treat private-variable markers like
        fork/join when transforming head/tail sequences.
        (struct var_decl_rewrite_info): Add struct.
        (oacc_rewrite_var_decl, is_sync_builtin_call): New functions.
        (execute_oacc_device_lower): Support rewriting gang-private
        variables using target hook, and fix up addr_expr and var_decl
        nodes afterwards.
        * target.def (adjust_private_decl, expand_var_decl): New hooks.
        * config/gcn/gcn-protos.h (gcn_goacc_adjust_gangprivate_decl):
        Rename to...
        (gcn_goacc_adjust_private_decl): ...this.
        * config/gcn/gcn-tree.c (gcn_goacc_adjust_gangprivate_decl):
        Rename to...
        (gcn_goacc_adjust_private_decl): ...this. Add LEVEL parameter.
        * config/gcn/gcn.c (TARGET_GOACC_ADJUST_GANGPRIVATE_DECL): Rename
        definition using gcn_goacc_adjust_gangprivate_decl...
        (TARGET_GOACC_ADJUST_PRIVATE_DECL): ...to this, using
        gcn_goacc_adjust_private_decl.
        * config/nvptx/nvptx.c (tree-pretty-print.h): Include.
        (gang_private_shared_size): New global variable.
        (gang_private_shared_align): Likewise.
        (gang_private_shared_sym): Likewise.
        (gang_private_shared_hmap): Likewise.
        (nvptx_option_override): Initialize these.
        (nvptx_file_end): Output gang_private_shared_sym.
        (nvptx_goacc_adjust_private_decl, nvptx_goacc_expand_var_decl):
        New functions.
        (nvptx_set_current_function): Clear gang_private_shared_hmap.
        (TARGET_GOACC_ADJUST_PRIVATE_DECL): Define hook.
        (TARGET_GOACC_EXPAND_VAR_DECL): Likewise.

2021-05-21  H.J. Lu  <hjl.tools@gmail.com>

        * config/i386/i386-modes.def (MAX_BITSIZE_MODE_ANY_INT): Removed.

2021-05-21  Richard Biener  <rguenther@suse.de>
            H.J. Lu  <hjl.tools@gmail.com>

        PR middle-end/90773
        * expr.c (expand_constructor): Elide expand_constructor if
        move by pieces is preferred.

2021-05-21  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-builtins.c (aarch64_call_properties):
        Take a flag and mode value as arguments.
        (aarch64_modifies_global_state_p): Likewise.
        (aarch64_reads_global_state_p): Likewise.
        (aarch64_could_trap_p): Likewise.
        (aarch64_get_attributes): Likewise.
        (aarch64_init_simd_builtins): Adjust callsite of above.
        (aarch64_init_fcmla_laneq_builtins): Use aarch64_get_attributes to get
        function attributes to apply to builtins.
        (aarch64_init_crc32_builtins): Likewise.
        (aarch64_init_builtin_rsqrt): Likewise.

2021-05-21  Aaron Sawdey  <acsawdey@linux.ibm.com>

        * config/rs6000/rs6000.md (define_attr "type"): Add types for fusion.
        * config/rs6000/genfusion.pl (gen_ld_cmpi_p10): Use new fusion types.
        (gen_2logical): Use new fusion types.
        * config/rs6000/fusion.md: Regenerate.

2021-05-21  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/100637
        * config/i386/i386-expand.c (ix86_expand_sse_movcc):
        Handle V4QI and V2HI modes.
        (ix86_expand_sse_movcc): Ditto.
        * config/i386/mmx.md (*<sat_plusminus:insn><VI_32:mode>3):
        New instruction pattern.
        (*eq<VI_32:mode>3): Ditto.
        (*gt<VI_32:mode>3): Ditto.
        (*xop_pcmov_<VI_32:mode>): Ditto.
        (mmx_pblendvb32): Ditto.
        (mmx_pblendvb64): Rename from mmx_pblendvb.
        (vec_cmp<VI_32:mode><VI_32:mode>): New expander.
        (vec_cmpu<VI_32:mode><VI_32:mode>): Ditto.
        (vcond<VI_32:mode><VI_32:mode>): Ditto.
        (vcondu<VI_32:mode><VI_32:mode>): Ditto.
        (vcond_mask_<VI_32:mode><VI_32:mode>): Ditto.

2021-05-21  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/94589
        * tree-ssa-phiopt.c (spaceship_replacement): For integral rhs1 and
        rhs2, treat x <= 4 equivalently to x < 5 etc.  In cmp1 and cmp2 (if
        not the same as cmp3) treat <= the same as < and >= the same as >.
        Don't require that cond2_phi_edge is true edge, instead take
        false/true edges into account based on cmp1/cmp2 comparison kinds.

2021-05-21  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/100637
        * config/i386/mmx.md (SMAXMIN_MMXMODEI): New mode iterator.
        (<smaxmin:code><SMAXMIN_MMXMODEI:mode>3): Macroize expander
        from <smaxmin:code>v4hi3> and <smaxmin:code><MMXMODE14:mode>3
        using SMAXMIN_MMXMODEI mode iterator.
        (*<smaxmin:code>v4qi3): New insn pattern.
        (*<smaxmin:code>v2hi3): Ditto.
        (SMAXMIN_VI_32): New mode iterator.
        (<smaxmin:code><SMAXMIN_VI_32>mode3): New expander.
        (UMAXMIN_MMXMODEI): New mode iterator.
        (<umaxmin:code><UMAXMIN_MMXMODEI:mode>3): Macroize expander
        from <umaxmin:code>v8qi3> and <umaxmin:code><MMXMODE24:mode>3
        using UMAXMIN_MMXMODEI mode iterator.
        (*<umaxmin:code>v4qi3): New insn pattern.
        (*<umaxmin:code>v2hi3): Ditto.
        (UMAXMIN_VI_32): New mode iterator.
        (<umaxmin:code><UMAXMIN_VI_32>mode3): New expander.
        (abs<VI_32:mode>2): New insn pattern.
        (ssse3_abs<MMXMODEI:mode>2, abs<MMXMODEI:mode>2): Move from ...
        * config/i386/sse.md: ... here.

2021-05-20  Clement Chigot  <clement.chigot@atos.net>
            David Edelsohn  <dje.gcc@gmail.com>

        * collect2.c (scan_prog_file): Issue non-fatal warning for
        non-COFF files.

2021-05-20  Jonathan Wakely  <jwakely@redhat.com>

        * doc/invoke.texi (-Wno-c++11-extensions)
        (-Wno-c++14-extensions, -Wno-c++17-extensions)
        (-Wno-c++20-extensions, -Wno-c++23-extensions): Document
        new options.

2021-05-20  Indu Bhagat  <indu.bhagat@oracle.com>

        * config/c6x/c6x.c (c6x_output_file_unwind): Use dwarf_debuginfo_p.
        * config/darwin.c (darwin_override_options): Likewise.
        * config/i386/cygming.h (DBX_REGISTER_NUMBER): Likewise.
        * config/i386/darwin.h (DBX_REGISTER_NUMBER): Likewise.
        (DWARF2_FRAME_REG_OUT): Likewise.
        * config/mips/mips.c (mips_output_filename): Likewise.
        * config/rs6000/rs6000.c (rs6000_xcoff_declare_function_name):
        Likewise.
        (rs6000_dbx_register_number): Likewise.
        * dbxout.c: Include flags.h.
        * dwarf2cfi.c (cfi_label_required_p): Likewise.
        (dwarf2out_do_frame): Likewise.
        * except.c: Include flags.h.
        * final.c (dwarf2_debug_info_emitted_p): Likewise.
        (final_scan_insn_1): Likewise.
        * flags.h (dwarf_debuginfo_p): New function declaration.
        * opts.c (dwarf_debuginfo_p): New function definition.
        * targhooks.c (default_debug_unwind_info): Use dwarf_debuginfo_p.
        * toplev.c (process_options): Likewise.

2021-05-20  Indu Bhagat  <indu.bhagat@oracle.com>

        * common.opt: Change type to support bitmasks.
        * flag-types.h (enum debug_info_type): Rename enumerator constants.
        (NO_DEBUG): New bitmask.
        (DBX_DEBUG): Likewise.
        (DWARF2_DEBUG): Likewise.
        (XCOFF_DEBUG): Likewise.
        (VMS_DEBUG): Likewise.
        (VMS_AND_DWARF2_DEBUG): Likewise.
        * flags.h (debug_set_to_format): New function declaration.
        (debug_set_count): Likewise.
        (debug_set_names): Likewise.
        * opts.c (debug_type_masks): Array of bitmasks for debug formats.
        (debug_set_to_format): New function definition.
        (debug_set_count): Likewise.
        (debug_set_names): Likewise.
        (set_debug_level): Update access to debug_type_names.
        * toplev.c: Likewise.

2021-05-20  Martin Sebor  <msebor@redhat.com>

        PR middle-end/100684
        * tree-ssa-ccp.c (pass_post_ipa_warn::execute): Handle C++ lambda.

2021-05-20  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/100701
        * config/i386/i386.md (isa): Remove x64_bmi.
        (enabled): Remove x64_bmi.
        * config/i386/mmx.md (mmx_andnot<MMXMODEI:mode>3):
        Remove general register alternative.
        (*andnot<VI_32:mode>3): Ditto.
        (*mmx_<any_logic:code><MMXMODEI:mode>3): Ditto.
        (*<any_logic:code><VI_32:mode>3): Ditto.

2021-05-20  Kewen Lin  <linkw@linux.ibm.com>

        * config/arm/arm.c: Include head files tree-vectorizer.h and
        cfgloop.h.

2021-05-20  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/100637
        * config/i386/mmx.md (Yv_Yw): Revert adding V4QI and V2HI modes.
        (*<plusminus:insn><VI_32:mode>3): Use Yw instad of <Yv_Yw> constrint.
        (<s>mulv4hi3_highpart): New expander.
        (*<s>mulv2hi3_highpart): New insn pattern.
        (<s>mulv2hi3_higpart): New expander.
        (*<any_shift:insn>v2hi3): New insn pattern.
        (<any_shift:insn>v2hi3): New expander.
        * config/i386/sse.md (smulhrsv2hi3): New expander.
        (*smulhrsv2hi3): New insn pattern.

2021-05-20  Kewen Lin  <linkw@linux.ibm.com>

        * doc/invoke.texi (vect-inner-loop-cost-factor): Document new
        parameter.
        * params.opt (vect-inner-loop-cost-factor): New.
        * targhooks.c (default_add_stmt_cost): Replace hardcoded factor
        50 with LOOP_VINFO_INNER_LOOP_COST_FACTOR, include head file
        tree-vectorizer.h and its required ones.
        * config/aarch64/aarch64.c (aarch64_add_stmt_cost): Replace
        hardcoded factor 50 with LOOP_VINFO_INNER_LOOP_COST_FACTOR.
        * config/arm/arm.c (arm_add_stmt_cost): Likewise.
        * config/i386/i386.c (ix86_add_stmt_cost): Likewise.
        * config/rs6000/rs6000.c (rs6000_add_stmt_cost): Likewise.
        * tree-vect-loop.c (vect_compute_single_scalar_iteration_cost):
        Likewise.
        (_loop_vec_info::_loop_vec_info): Init inner_loop_cost_factor.
        * tree-vectorizer.h (_loop_vec_info): Add inner_loop_cost_factor.
        (LOOP_VINFO_INNER_LOOP_COST_FACTOR): New macro.

2021-05-20  Christophe Lyon  <christophe.lyon@linaro.org>
            Torbjörn Svensson  <torbjorn.svensson@st.com>

        PR c/42579
        * doc/cpp.texi (Common Predefined Macros): Document __FILE_NAME__.

2021-05-20  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/99928
        * gimplify.c (gimplify_scan_omp_clauses) <case OMP_CLAUSE_LINEAR>: For
        explicit linear clause when combined with target, make it map(tofrom:)
        instead of no clause or firstprivate.

2021-05-20  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/94589
        * match.pd ((X & Y) == X -> (X & ~Y) == 0): Simplify even in presence
        of integral conversions.

2021-05-19  Andrew MacLeod  <amacleod@redhat.com>

        * gimple-range.cc (fur_source::get_operand): New.
        (gimple_range_fold): Delete.
        (fold_using_range::fold_stmt): Move from gimple_ranger::calc_stmt.
        (fold_using_range::range_of_range_op): Move from gimple_ranger.
        (fold_using_range::range_of_address): Ditto.
        (fold_using_range::range_of_phi): Ditto.
        (fold_using_range::range_of_call): Ditto.
        (fold_using_range::range_of_builtin_ubsan_call): Move from
        range_of_builtin_ubsan_call.
        (fold_using_range::range_of_builtin_call): Move from
        range_of_builtin_call.
        (gimple_ranger::range_of_builtin_call): Delete.
        (fold_using_range::range_of_cond_expr): Move from gimple_ranger.
        (gimple_ranger::fold_range_internal): New.
        (gimple_ranger::range_of_stmt): Use new fold_using_range API.
        (fold_using_range::range_of_ssa_name_with_loop_info): Move from
        gimple_ranger.  Improve ranges of SSA_NAMES when possible.
        * gimple-range.h (gimple_ranger): Remove various range_of routines.
        (class fur_source): New.
        (class fold_using_range): New.
        (fur_source::fur_source): New.
        (fold_range): New.
        * vr-values.c (vr_values::extract_range_basic): Use fold_using_range
        instead of range_of_builtin_call.

2021-05-19  Jonathan Wakely  <jwakely@redhat.com>

        * doc/cpp.texi (Common Predefined Macros): Update documentation
        for the __GXX_EXPERIMENTAL_CXX0X__ macro.

2021-05-19  Alex Coplan  <alex.coplan@arm.com>

        PR target/100333
        * config/arm/arm.md (nonsecure_call_internal): Always ensure
        callee's address is in a register.

2021-05-19  Geng Qi  <gengqi@linux.alibaba.com>

        * common/config/riscv/riscv-common.c
        (riscv_subset_list::parsing_subset_version): Properly parse the letter
        'p' in '-march'.
        (riscv_subset_list::parse_std_ext,
         riscv_subset_list::parse_multiletter_ext): To handle errors generated
        in riscv_subset_list::parsing_subset_version.

2021-05-19  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd.md: Use "neon_move_narrow_q"
        type attribute in patterns generating XTN(2).

2021-05-19  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd.md (aarch64_simd_vec_pack_trunc_<mode>):
        Remove as duplicate of...
        (aarch64_xtn<mode>): This.
        (aarch64_xtn2<mode>_le): Move position in file.
        (aarch64_xtn2<mode>_be): Move position in file.
        (aarch64_xtn2<mode>): Move position in file.
        (vec_pack_trunc_<mode>): Define as an expander.

2021-05-19  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Split builtin
        generation for aarch64_<sur>q<r>shr<u>n_n<mode> pattern into
        separate scalar and vector generators.
        * config/aarch64/aarch64-simd.md
        (aarch64_<sur>q<r>shr<u>n_n<mode>): Define as an expander and
        split into...
        (aarch64_<sur>q<r>shr<u>n_n<mode>_insn_le): This and...
        (aarch64_<sur>q<r>shr<u>n_n<mode>_insn_be): This.
        * config/aarch64/iterators.md: Define SD_HSDI iterator.

2021-05-19  Jonathn Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd.md: Use UNSPEC_SQXTUN instead
        of UNSPEC_SQXTUN2.
        * config/aarch64/iterators.md: Remove UNSPEC_SQXTUN2.

2021-05-19  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd.md (aarch64_<sur>q<r>shr<u>n2_n<mode>):
        Implement as an expand emitting a big/little endian
        instruction pattern.
        (aarch64_<sur>q<r>shr<u>n2_n<mode>_insn_le): Define.
        (aarch64_<sur>q<r>shr<u>n2_n<mode>_insn_be): Define.

2021-05-19  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd.md (aarch64_<sur><addsub>hn2<mode>):
        Implement as an expand emitting a big/little endian
        instruction pattern.
        (aarch64_<sur><addsub>hn2<mode>_insn_le): Define.
        (aarch64_<sur><addsub>hn2<mode>_insn_be): Define.
        * config/aarch64/iterators.md: Remove UNSPEC_[R]ADDHN2 and
        UNSPEC_[R]SUBHN2 unspecs and ADDSUBHN2 iterator.

2021-05-19  Richard Biener  <rguenther@suse.de>

        PR middle-end/100672
        * fold-const.c (fold_negate_expr_1): Use element_precision.
        (negate_expr_p): Likewise.

2021-05-19  Andre Vieira  <andre.simoesdiasvieira@arm.com>

        * config/aarch64/iterators.md (SVE_PRED_LOAD): New iterator.
        (pred_load): New int attribute.
        * config/aarch64/aarch64-sve.md
        (aarch64_load_<ANY_EXTEND:optab><SVE_HSDI:mode><SVE_PARTIAL_I:mode>): Use
        SVE_PRED_LOAD enum iterator and corresponding pred_load attribute.
        * config/aarch64/aarch64-sve-builtins-base.cc (expand): Update call to
        code_for_aarch64_load.

2021-05-19  Richard Biener  <rguenther@suse.de>

        * cfgexpand.c (discover_nonconstant_array_refs_r): Make
        sure TARGET_MEM_REF bases are expanded as memory.
        * tree-ssa-operands.c (operands_scanner::get_tmr_operands):
        Do not mark TARGET_MEM_REF bases addressable.
        * tree-ssa.c (non_rewritable_mem_ref_base): Handle
        TARGET_MEM_REF bases as never rewritable.
        * gimple-walk.c (walk_stmt_load_store_addr_ops): Do not
        walk TARGET_MEM_REF bases as address-takens.
        * tree-ssa-dce.c (ref_may_be_aliased): Handle TARGET_MEM_REF.

2021-05-19  Richard Biener  <rguenther@suse.de>

        * builtins.c (get_object_alignment_1): Strip outer
        WITH_SIZE_EXPR.
        * tree-dfa.c (get_ref_base_and_extent): Handle outer
        WITH_SIZE_EXPR for size processing and process the
        containing ref.
        * tree-ssa-alias.c (ao_ref_base_alias_set): Strip
        outer WITH_SIZE_EXPR.
        (ao_ref_base_alias_ptr_type): Likewise.
        (refs_may_alias_p_2): Allow WITH_SIZE_EXPR in ref->ref
        and handle that accordingly, stripping it for the
        core alias workers.
        * tree.c (get_base_address): Handle WITH_SIZE_EXPR by
        looking through it instead of returning NULL.

2021-05-19  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/100576
        * builtins.c (check_read_access): Convert bound to size_type_node if
        non-NULL.

2021-05-19  Richard Biener  <rguenther@suse.de>

        * tree-cfg.c (verify_types_in_gimple_min_lval): Inline...
        (verify_types_in_gimple_reference): ... here.  Sanitize.
        (verify_gimple_call): Verify references in LHS and arguments.
        (verify_gimple_assign_single): Reject WITH_SIZE_EXPR.

2021-05-19  Uroš Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.h (VALID_INT_MODE_P):
        Add V8QI, V4HI and V2SI modes for TARGET_64BIT.
        * config/i386/i386.md (isa): Add x64_bmi.
        (enabled): Handle x64_bmi.
        * config/i386/mmx.md (mmx_andnot<MMXMODEI:mode>3):
        Add alternative using 64bit general registers.
        (*mmx_<any_logic:code><MMXMODEI:mode>3): Ditto.

2021-05-19  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/99928
        * tree.h (OMP_MASTER_COMBINED): Define.
        * gimplify.c (gimplify_scan_omp_clauses): Rewrite lastprivate
        handling for outer combined/composite constructs to a loop.
        Handle lastprivate on combined target.
        (gimplify_expr): Formatting fix.

2021-05-19  Xionghu Luo  <luoxhu@linux.ibm.com>

        * passes.def: Add sink_code pass before store_merging.
        * tree-ssa-sink.c (pass_sink_code:clone): New.

2021-05-18  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/freebsd64.h (ADJUST_FIELD_ALIGN): Remove call to
        rs6000_special_adjust_field_align_p.
        * config/rs6000/linux64.h (ADJUST_FIELD_ALIGN): Likewise.
        * config/rs6000/rs6000-call.c (rs6000_function_arg_boundary):
        Remove ABI warning.
        (rs6000_function_arg): Likewise.
        * config/rs6000/rs6000-protos.h
        (rs6000_special_adjust_field_align_p): Remove prototype.
        * config/rs6000/rs6000.c (rs6000_special_adjust_field_align_p):
        Remove.
        * config/rs6000/sysv4.h (ADJUST_FIELD_ALIGN): Remove call to
        rs6000_special_adjust_field_align_p.

2021-05-18  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/100637
        * config/i386/i386.h (VALID_SSE2_REG_MODE):
        Add V4QI and V2HI modes.
        (VALID_INT_MODE_P): Ditto.
        * config/i386/mmx.md (VI_32): New mode iterator.
        (mmxvecsize): Handle V4QI and V2HI.
        (Yv_Yw): Ditto.
        (mov<VI_32:mode>): New expander.
        (*mov<mode>_internal): New insn pattern.
        (movmisalign<VI_32:mode>): New expander.
        (neg<VI_32:mode>): New expander.
        (<plusminus:insn><VI_32:mode>3): New expander.
        (*<plusminus:insn><VI_32:mode>3): New insn pattern.
        (mulv2hi3): New expander.
        (*mulv2hi3): New insn pattern.
        (one_cmpl<VI_32:mode>2): New expander.
        (*andnot<VI_32:mode>3): New insn pattern.
        (<any_logic:code><VI_32:mode>3): New expander.
        (*<any_logic:code><VI_32:mode>3): New insn pattern.

2021-05-18  Uroš Bizjak  <ubizjak@gmail.com>

        * config/i386/sse.md (<any_extend:insn>v4qiv4di2):
        Fix a mode mismatch with operand 1.

2021-05-18  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/100626
        * config/i386/i386-expand.c (split_double_mode): Return
        temporary register when simplify_gen_subreg fails with
        the high half od the paradoxical subreg.

2021-05-18  Richard Biener  <rguenther@suse.de>

        * cfgexpand.c (expand_one_var): Pass in forced_stack_var
        and honor it when expanding.
        (expand_used_vars_for_block): Pass through forced_stack_var.
        (expand_used_vars): Likewise.
        (discover_nonconstant_array_refs_r): Set bits in
        forced_stack_vars instead of marking vars TREE_ADDRESSABLE.
        (avoid_type_punning_on_regs): Likewise.
        (discover_nonconstant_array_refs): Likewise.
        (pass_expand::execute): Create and pass down forced_stack_var
        bitmap.  For parameters and returns temporarily set
        TREE_ADDRESSABLE when expand_function_start.

2021-05-18  Thomas Schwinge  <thomas@codesourcery.com>

        * doc/sourcebuild.texi: Document 'dg-note'.

2021-05-18  Tobias Burnus  <tobias@codesourcery.com>

        PR other/100598
        * configure: Regenerate.
        * configure.ac (BUILD_CFLAG, BUILD_CXXFLAGS): Add $(CFLAGS-$@).

2021-05-18  Thomas Schwinge  <thomas@codesourcery.com>

        * gimple.h (is_gimple_omp_oacc): Tighten.
        * omp-low.c (check_omp_nesting_restrictions): Adjust.

2021-05-18  Richard Biener  <rguenther@suse.de>

        * tree-ssa-operands.c (mark_address_taken): Simplify.

2021-05-18  Martin Liska  <mliska@suse.cz>

        * config/gcn/mkoffload.c (STR): Redefine.
        * config/i386/intelmic-mkoffload.c (STR): Likewise.
        * config/nvptx/mkoffload.c (STR): Likewise.

2021-05-18  Martin Liska  <mliska@suse.cz>

        * common/config/aarch64/aarch64-common.c (aarch64_parse_extension):
        Use startswith function instead of strncmp.
        * common/config/bfin/bfin-common.c (bfin_handle_option): Likewise.
        * common/config/riscv/riscv-common.c (riscv_subset_list::parse): Likewise.
        * config/aarch64/aarch64-sve-builtins-shapes.cc (parse_type): Likewise.
        * config/aarch64/aarch64.c (aarch64_process_one_target_attr): Likewise.
        * config/alpha/alpha.c (alpha_elf_section_type_flags): Likewise.
        * config/arm/aarch-common.c (arm_md_asm_adjust): Likewise.
        * config/arm/arm.c (arm_file_start): Likewise.
        (arm_valid_target_attribute_rec): Likewise.
        (thumb1_md_asm_adjust): Likewise.
        * config/arm/driver-arm.c (host_detect_local_cpu): Likewise.
        * config/avr/avr.c (STR_PREFIX_P): Likewise.
        (avr_set_current_function): Likewise.
        (avr_handle_addr_attribute): Likewise.
        (avr_asm_output_aligned_decl_common): Likewise.
        (avr_asm_named_section): Likewise.
        (avr_section_type_flags): Likewise.
        (avr_asm_select_section): Likewise.
        * config/c6x/c6x.c (c6x_in_small_data_p): Likewise.
        (c6x_section_type_flags): Likewise.
        * config/darwin-c.c (darwin_cfstring_ref_p): Likewise.
        (darwin_objc_declare_unresolved_class_reference): Likewise.
        (darwin_objc_declare_class_definition): Likewise.
        * config/darwin.c (indirect_data): Likewise.
        (darwin_encode_section_info): Likewise.
        (darwin_objc2_section): Likewise.
        (darwin_objc1_section): Likewise.
        (machopic_select_section): Likewise.
        (darwin_globalize_label): Likewise.
        (darwin_label_is_anonymous_local_objc_name): Likewise.
        (darwin_asm_named_section): Likewise.
        (darwin_asm_output_dwarf_offset): Likewise.
        * config/frv/frv.c (frv_string_begins_with): Likewise.
        (frv_in_small_data_p): Likewise.
        * config/gcn/mkoffload.c (STR): Likewise.
        (main): Likewise.
        * config/i386/i386-builtins.c (get_builtin_code_for_version): Likewise.
        * config/i386/i386-options.c (ix86_option_override_internal): Likewise.
        * config/i386/i386.c (x86_64_elf_section_type_flags): Likewise.
        (ix86_md_asm_adjust): Likewise.
        * config/i386/intelmic-mkoffload.c (STR): Likewise.
        * config/i386/winnt.c (i386_pe_asm_named_section): Likewise.
        (i386_pe_file_end): Likewise.
        * config/ia64/ia64.c (ia64_in_small_data_p): Likewise.
        (ia64_section_type_flags): Likewise.
        * config/mips/driver-native.c (host_detect_local_cpu): Likewise.
        * config/mips/mips.c (mips_handle_interrupt_attr): Likewise.
        (mips16_stub_function_p): Likewise.
        (mips_function_rodata_section): Likewise.
        * config/msp430/msp430.c (msp430_mcu_name): Likewise.
        (msp430_function_section): Likewise.
        (msp430_section_type_flags): Likewise.
        (msp430_expand_helper): Likewise.
        * config/nios2/nios2.c (nios2_small_section_name_p): Likewise.
        (nios2_valid_target_attribute_rec): Likewise.
        * config/nvptx/mkoffload.c (process): Likewise.
        (STR): Likewise.
        * config/pa/som.h: Likewise.
        * config/pdp11/pdp11.c (pdp11_output_ident): Likewise.
        * config/riscv/riscv.c (riscv_elf_select_rtx_section): Likewise.
        * config/rs6000/rs6000.c (VTABLE_NAME_P): Likewise.
        (rs6000_inner_target_options): Likewise.
        * config/s390/driver-native.c (s390_host_detect_local_cpu): Likewise.
        * config/sparc/driver-sparc.c (host_detect_local_cpu): Likewise.
        * config/vax/vax.c (vax_output_int_move): Likewise.
        * config/vms/vms-ld.c (startswith): Likewise.
        (process_args): Likewise.
        (main): Likewise.
        * config/vms/vms.c: Likewise.

2021-05-18  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/100590
        * regcprop.c (copyprop_hardreg_forward_1): Only DCE dead sets if
        they are NONJUMP_INSN_P.

2021-05-18  Jakub Jelinek  <jakub@redhat.com>

        PR c++/100580
        * function.c (push_dummy_function): Set DECL_ARTIFICIAL and
        DECL_ASSEMBLER_NAME on the fn_decl.

2021-05-18  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/94589
        * tree-ssa-phiopt.c (spaceship_replacement): Pattern match
        phi result used in (res & ~1) == 0 comparison as res >= 0 as
        res == 2 would be UB with -ffinite-math-only.

2021-05-18  Martin Liska  <mliska@suse.cz>

        * Makefile.in: genversion.o should depend on DATESTAMP.

2021-05-18  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/simdext.md (negv2si2): Remove round bracket.

2021-05-18  Andreas Krebbel  <krebbel@linux.ibm.com>

        * config/s390/s390-c.c (s390_cpu_cpp_builtins_internal): Define
        _Bool as macro expanding to _Bool.

2021-05-18  Andreas Krebbel  <krebbel@linux.ibm.com>

        PR c++/100281
        * tree.c (build_reference_type_for_mode)
        (build_pointer_type_for_mode): Pick pointer mode if MODE argument
        is VOIDmode.
        (build_reference_type, build_pointer_type): Invoke
        build_*_type_for_mode with VOIDmode.

2021-05-17  Andrew MacLeod  <amacleod@redhat.com>

        PR tree-optimization/100512
        * gimple-range-cache.cc (ranger_cache::set_global_range): Mark const
        and non-zero pointer ranges as invariant.
        * gimple-range.cc (gimple_ranger::range_of_stmt): Remove pointer
        processing from here.

2021-05-17  Tom de Vries  <tdevries@suse.de>

        PR target/100497
        * config/nvptx/nvptx-protos.h (nvptx_output_atomic_insn): Declare
        * config/nvptx/nvptx.c (nvptx_output_barrier)
        (nvptx_output_atomic_insn): New function.
        (nvptx_print_operand): Add support for 'B'.
        * config/nvptx/nvptx.md: Use nvptx_output_atomic_insn for atomic
        insns.

2021-05-17  Aldy Hernandez  <aldyh@redhat.com>

        PR tree-optimization/100349
        * vr-values.c (bounds_of_var_in_loop): Bail if scev returns
          NULL.

2021-05-17  Tamar Christina  <tamar.christina@arm.com>

        * config/aarch64/driver-aarch64.c (DEFAULT_ARCH): New.
        (host_detect_local_cpu): Use it.

2021-05-17  Martin Liska  <mliska@suse.cz>

        * doc/invoke.texi: Add 2 missing dots.

2021-05-17  Marius Hillenbrand  <mhillen@linux.ibm.com>

        PR bootstrap/100552
        * configure.ac: Replace pattern substitution with call to sed.
        * configure: Regenerate.

2021-05-17  Richard Biener  <rguenther@suse.de>

        PR middle-end/100582
        * tree.c (array_at_struct_end_p): Get to the base of the
        reference before looking for the underlying decl.

2021-05-17  Joern Rennecke  <joern.rennecke@embecosm.com>

        * genoutput.c (validate_insn_alternatives) Make "wrong number of
        alternatives" message more specific, and remove assumption on where
        the problem is.

2021-05-17  Christophe Lyon  <christophe.lyon@linaro.org>

        * config/arm/iterators.md (V16): New iterator.
        (VH_cvtto): New iterator.
        (v_cmp_result): Added V4HF and V8HF support.
        * config/arm/vec-common.md (vec_cmp<mode><v_cmp_result>): Use VDQWH.
        (vcond<mode><mode>): Likewise.
        (vcond_mask_<mode><v_cmp_result>): Likewise.
        (vcond<VH_cvtto><mode>): New expander.

2021-05-17  Christophe Lyon  <christophe.lyon@linaro.org>

        * config/arm/arm-protos.h (arm_expand_vector_compare): Update
        prototype.
        * config/arm/arm.c (arm_expand_vector_compare): Add support for
        MVE.
        (arm_expand_vcond): Likewise.
        * config/arm/iterators.md (supf): Remove VCMPNEQ_S, VCMPEQQ_S,
        VCMPEQQ_N_S, VCMPNEQ_N_S.
        (VCMPNEQ, VCMPEQQ, VCMPEQQ_N, VCMPNEQ_N): Remove.
        * config/arm/mve.md (@mve_vcmp<mve_cmp_op>q_<mode>): Add '@' prefix.
        (@mve_vcmp<mve_cmp_op>q_f<mode>): Likewise.
        (@mve_vcmp<mve_cmp_op>q_n_f<mode>): Likewise.
        (@mve_vpselq_<supf><mode>): Likewise.
        (@mve_vpselq_f<mode>"): Likewise.
        * config/arm/neon.md (vec_cmp<mode><v_cmp_result): Enable for MVE
        and move to vec-common.md.
        (vec_cmpu<mode><mode>): Likewise.
        (vcond<mode><mode>): Likewise.
        (vcond<V_cvtto><mode>): Likewise.
        (vcondu<mode><v_cmp_result>): Likewise.
        (vcond_mask_<mode><v_cmp_result>): Likewise.
        * config/arm/unspecs.md (VCMPNEQ_U, VCMPNEQ_S, VCMPEQQ_S)
        (VCMPEQQ_N_S, VCMPNEQ_N_S, VCMPEQQ_U, CMPEQQ_N_U, VCMPNEQ_N_U)
        (VCMPGEQ_N_S, VCMPGEQ_S, VCMPGTQ_N_S, VCMPGTQ_S, VCMPLEQ_N_S)
        (VCMPLEQ_S, VCMPLTQ_N_S, VCMPLTQ_S, VCMPCSQ_N_U, VCMPCSQ_U)
        (VCMPHIQ_N_U, VCMPHIQ_U): Remove.
        * config/arm/vec-common.md (vec_cmp<mode><v_cmp_result): Moved
        from neon.md.
        (vec_cmpu<mode><mode>): Likewise.
        (vcond<mode><mode>): Likewise.
        (vcond<V_cvtto><mode>): Likewise.
        (vcondu<mode><v_cmp_result>): Likewise.
        (vcond_mask_<mode><v_cmp_result>): Likewise. Added unsafe math
        condition.

2021-05-17  liuhongt  <hongtao.liu@intel.com>

        PR target/100549
        * config/i386/i386.c (ix86_gimple_fold_builtin): Use
        gsi_insert_seq_before instead.

2021-05-17  Christophe Lyon  <christophe.lyon@linaro.org>

        * doc/sourcebuild.texi (arm_qbit_ok): Rename into...
        (arm_sat_ok): ...this.

2021-05-17  Martin Liska  <mliska@suse.cz>

        * lto-wrapper.c (merge_flto_options): Factor out a new function.
        (merge_and_complain): Use it.
        (run_gcc): Merge also linker command line -flto=foo argument
        with IL files.

2021-05-16  Christophe Lyon  <christophe.lyon@linaro.org>

        * config/arm/arm.h (CPP_SPEC): Remove error message about
        -mlittle-endian/-mbig-endian conflict.

2021-05-15  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000-c.c (rs6000_target_modify_macros): Define
        __ROP_PROTECT__ if -mrop-protect is selected.

2021-05-15  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000-internal.h (rs6000_stack): Add
        rop_hash_save_offset and rop_hash_size.
        * config/rs6000/rs6000-logue.c (rs6000_stack_info): Compute
        rop_hash_size and rop_hash_save_offset.
        (debug_stack_info): Dump rop_hash_save_offset and rop_hash_size.
        (rs6000_emit_prologue): Emit hashst[p] in prologue.
        (rs6000_emit_epilogue): Emit hashchk[p] in epilogue.
        * config/rs6000/rs6000.md (unspec): Add UNSPEC_HASHST and
        UNSPEC_HASHCHK.
        (hashst): New define_insn.
        (hashchk): Likewise.

2021-05-15  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000.c (rs6000_option_override_internal):
        Disable shrink wrap when inserting ROP-protect instructions.
        * config/rs6000/rs6000.opt (mrop-protect): New option.
        (mprivileged): Likewise.
        * doc/invoke.texi: Document mrop-protect and mprivileged.

2021-05-15  Hans-Peter Nilsson  <hp@axis.com>

        * reorg.c (fill_slots_from_thread): Reinstate code typoed out in
        "Remove CC0".

2021-05-15  Martin Jambor  <mjambor@suse.cz>

        Revert:
        2021-05-13  Martin Jambor  <mjambor@suse.cz>

        PR tree-optimization/100453
        * tree-sra.c (sra_modify_assign): All const base accesses do not
        need refreshing, not just those from decl_pool.
        (sra_modify_assign): Do not refresh into a const base decl.

2021-05-15  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/100342
        * regcprop.c (copy_value): When copying a source reg in a wider
        mode than it has recorded for the value, adjust recorded destination
        mode too or punt if !REG_CAN_CHANGE_MODE_P.

2021-05-14  Jason Merrill  <jason@redhat.com>

        * intl.h: Add comments.

2021-05-14  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd.md
        (aarch64_sqdml<SBINQOPS:as>l2_lane<mode>_internal): Split into...
        (aarch64_sqdmlsl2_lane<mode>_internal): ... This...
        (aarch64_sqdmlal2_lane<mode>_internal): ... And this.
        (aarch64_sqdml<SBINQOPS:as>l2_laneq<mode>_internal): Split into ...
        (aarch64_sqdmlsl2_laneq<mode>_internal): ... This...
        (aarch64_sqdmlal2_laneq<mode>_internal): ... And this.
        (aarch64_sqdml<SBINQOPS:as>l2_n<mode>_internal): Split into...
        (aarch64_sqdmlsl2_n<mode>_internal): ... This...
        (aarch64_sqdmlal2_n<mode>_internal): ... And this.

2021-05-14  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

        PR target/66791
        * config/arm/arm_neon.h (vtst_s8): Replace call to vtst builtin with it's
        boolean logic equivalent.
        (vtst_s16): Likewise.
        (vtst_s32): Likewise.
        (vtst_u8): Likewise.
        (vtst_u16): Likewise.
        (vtst_u32): Likewise.
        (vtst_p8): Likewise.
        (vtst_p16): Likewise.
        (vtstq_s8): Likewise.
        (vtstq_s16): Likewise.
        (vtstq_s32): Likewise.
        (vtstq_u8): Likewise.
        (vtstq_u16): Likewise.
        (vtstq_u32): Likewise.
        (vtstq_p8): Likewise.
        (vtstq_p16): Likewise.
        * config/arm/arm_neon_builtins.def: Remove entry for vtst.
        * config/arm/neon.md (neon_vtst<mode>): Remove pattern.

2021-05-14  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd.md (aarch64_sqdmlal2<mode>): Merge into...
        (aarch64_sqdml<SBINQOPS:as>l2<mode>): ... This.
        (aarch64_sqdmlsl2<mode>): Delete.
        (aarch64_sqdmlal2_lane<mode>): Merge this...
        (aarch64_sqdmlsl2_lane<mode>): ... And this...
        (aarch64_sqdml<SBINQOPS:as>l2_lane<mode>): ... Into this.
        (aarch64_sqdmlal2_laneq<mode>): Merge this...
        (aarch64_sqdmlsl2_laneq<mode>): ... And this...
        (aarch64_sqdml<SBINQOPS:as>l2_laneq<mode>): ... Into this.
        (aarch64_sqdmlal2_n<mode>): Merge this...
        (aarch64_sqdmlsl2_n<mode>): ... And this...
        (aarch64_sqdml<SBINQOPS:as>l2_n<mode>): ... Into this.

2021-05-13  Martin Sebor  <msebor@redhat.com>

        PR middle-end/100574
        * builtins.c (access_ref::get_ref): Improve detection of PHIs with
        all null arguments.

2021-05-13  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/93100
        PR middle-end/98583
        * tree-ssa-uninit.c (check_defs): Exclude intrinsic functions that
        don't modify referenced objects.

2021-05-13  Martin Jambor  <mjambor@suse.cz>

        PR tree-optimization/100453
        * tree-sra.c (sra_modify_assign): All const base accesses do not
        need refreshing, not just those from decl_pool.
        (sra_modify_assign): Do not refresh into a const base decl.

2021-05-13  Martin Liska  <mliska@suse.cz>

        * tree-ssa-dom.c: Remove m_simplifier.

2021-05-13  Richard Earnshaw  <rearnsha@arm.com>

        PR target/100563
        * config/arm/arm.c (arm_canonicalize_comparison): Correctly
        canonicalize DImode inequality comparisons against the
        maximum integral value.

2021-05-13  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/98856
        * config/i386/i386.c (ix86_shift_rotate_cost): Add CODE argument.
        Expect V2DI and V4DI arithmetic right shifts to be emulated.
        (ix86_rtx_costs, ix86_add_stmt_cost): Adjust ix86_shift_rotate_cost
        caller.
        * config/i386/i386-expand.c (expand_vec_perm_2perm_interleave,
        expand_vec_perm_2perm_pblendv): New functions.
        (ix86_expand_vec_perm_const_1): Use them.
        * config/i386/sse.md (ashr<mode>3<mask_name>): Rename to ...
        (<mask_codefor>ashr<mode>3<mask_name>): ... this.
        (ashr<mode>3): New define_expand with VI248_AVX512BW iterator.
        (ashrv4di3): New define_expand.
        (ashrv2di3): Change condition to TARGET_SSE2, handle !TARGET_XOP
        and !TARGET_AVX512VL expansion.

2021-05-13  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/100581
        * config/i386/i386-expand.c (ix86_expand_sse_movcc): Force mode
        sizes < 16 to a register when constructing vpcmov pattern.
        * config/i386/mmx.md (*xop_pcmov_<mode>): Use MMXMODE124 mode.

2021-05-13  Martin Liska  <mliska@suse.cz>

        * gcov-io.c (gcov_write_block): Remove.
        (gcov_write_words): Likewise.
        (gcov_read_words): Re-implement using gcov_read_bytes.
        (gcov_allocate): Remove.
        (GCOV_BLOCK_SIZE): Likewise.
        (struct gcov_var): Remove most of the fields.
        (gcov_position): Implement with ftell.
        (gcov_rewrite): Remove setting of start and offset fields.
        (from_file): Re-format.
        (gcov_open): Remove setbuf call. It should not be needed.
        (gcov_close): Remove internal buffer handling.
        (gcov_magic): Use __builtin_bswap32.
        (gcov_write_counter): Use directly gcov_write_unsigned.
        (gcov_write_string): Use direct fwrite and do not round
        to 4 bytes.
        (gcov_seek): Use directly fseek.
        (gcov_write_tag): Use gcov_write_unsigned directly.
        (gcov_write_length): Likewise.
        (gcov_write_tag_length): Likewise.
        (gcov_read_bytes): Use directly fread.
        (gcov_read_unsigned): Use gcov_read_words.
        (gcov_read_counter): Likewise.
        (gcov_read_string): Use gcov_read_bytes.
        * gcov-io.h (GCOV_WORD_SIZE): Adjust to reflect
        that size is not in bytes, but words (4B).
        (GCOV_TAG_FUNCTION_LENGTH): Likewise.
        (GCOV_TAG_ARCS_LENGTH): Likewise.
        (GCOV_TAG_ARCS_NUM): Likewise.
        (GCOV_TAG_COUNTER_LENGTH): Likewise.
        (GCOV_TAG_COUNTER_NUM): Likewise.
        (GCOV_TAG_SUMMARY_LENGTH): Likewise.

2021-05-13  liuhongt  <hongtao.liu@intel.com>

        PR target/94680
        * config/i386/sse.md (ssedoublevecmode): Add attribute for
        V64QI/V32HI/V16SI/V4DI.
        (ssehalfvecmode): Add attribute for V2DI/V2DF.
        (*vec_concatv4si_0): Extend to VI124_128.
        (*vec_concat<mode>_0): New pre-reload splitter.
        * config/i386/predicates.md (movq_parallel): New predicate.

2021-05-13  Alexandre Oliva  <oliva@adacore.com>

        * targhooks.c (default_zero_call_used_regs): Retry using
        successfully-zeroed registers as sources.

2021-05-12  Tobias Burnus  <tobias@codesourcery.com>

        * omp-low.c (finish_taskreg_scan): Use the proper detach decl.

2021-05-12  Aldy Hernandez  <aldyh@redhat.com>

        PR c/100521
        * gimple-range.cc (range_of_builtin_call): Skip out on
          processing __builtin_clz when varying.

2021-05-12  Tom de Vries  <tdevries@suse.de>

        PR target/96005
        * config/nvptx/nvptx-opts.h (enum ptx_version): New enum.
        * config/nvptx/nvptx.c (nvptx_file_start): Print .version according
        to ptx_version_option.
        * config/nvptx/nvptx.h (TARGET_PTX_6_3): Define.
        * config/nvptx/nvptx.md (define_insn "nvptx_shuffle<mode>")
        (define_insn "nvptx_vote_ballot"): Use sync variant for
        TARGET_PTX_6_3.
        * config/nvptx/nvptx.opt (ptx_version): Add enum.
        (mptx): Add option.
        * doc/invoke.texi (Nvidia PTX Options): Add mptx item.

2021-05-12  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/100566
        * tree-ssa-sccvn.c (dominated_by_p_w_unex): Properly handle
        allow_back for all edge queries.

2021-05-12  liuhongt  <hongtao.liu@intel.com>

        PR target/99908
        * config/i386/sse.md (<sse4_1_avx2>_pblendvb): Add
        splitters for pblendvb of NOT mask register.

2021-05-12  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/100519
        * tree-ssa-reassoc.c (can_associate_p): Split into...
        (can_associate_op_p): ... this
        (can_associate_type_p): ... and this.
        (is_reassociable_op): Call can_associate_op_p.
        (break_up_subtract_bb): Call the appropriate predicates.
        (reassociate_bb): Likewise.

2021-05-12  Martin Liska  <mliska@suse.cz>

        * lto-wrapper.c (merge_and_complain): Merge -flto=arg options.
        (run_gcc): Use -flto argument detection for merged
        fdecoded_options.

2021-05-12  Martin Liska  <mliska@suse.cz>

        * lto-wrapper.c (print_lto_docs_link): New function.
        (run_gcc): Print warning about missing job server detection
        after we know NR of partitions. Do the same for -flto{,=1}.
        * opts.c (get_option_html_page): Support -flto option.

2021-05-12  Martin Liska  <mliska@suse.cz>

        * lto-wrapper.c (get_options_from_collect_gcc_options): Change
        return type.
        (append_option): Remove.
        (find_option): Rework to use the vector type.
        (remove_option): Remove.
        (merge_and_complain): Use vectors for cl_decoded_option data
        type arguments.
        (append_compiler_options): Likewise.
        (append_diag_options): Likewise.
        (append_linker_options): Likewise.
        (append_offload_options): Likewise.
        (compile_offload_image): Likewise.
        (compile_images_for_offload_targets): Likewise.
        (find_and_merge_options): Likewise.
        (run_gcc): Likewise.

2021-05-12  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        PR debug/100515
        * dwarf2out.c (dwarf2out_finish): Set
        have_multiple_function_sections with multi-range text_section.

2021-05-12  Martin Liska  <mliska@suse.cz>

        PR bootstrap/100560
        * Makefile.in: Remove version.h from linker command line.

2021-05-12  Richard Biener  <rguenther@suse.de>

        PR middle-end/100547
        * rtl.h (rtvec_alloc): Make argument size_t.
        * rtl.c (rtvec_alloc): Verify the count is less than INT_MAX.

2021-05-12  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/100508
        * cfgexpand.c (expand_debug_expr): For DEBUG_EXPR_DECL with vector
        type, don't reuse DECL_RTL if it has different mode, instead force
        creation of a new DEBUG_EXPR.

2021-05-12  Jakub Jelinek  <jakub@redhat.com>
            Marc Glisse  <marc.glisse@inria.fr>

        PR tree-optimization/94589
        * match.pd ((X & Y) == X -> (X & ~Y) == 0,
        (X | Y) == Y -> (X & ~Y) == 0): New GIMPLE simplifications.

2021-05-12  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/98218
        * config/i386/i386-expand.c (ix86_expand_sse_movcc): Handle V2SF mode.
        * config/i386/mmx.md (MMXMODE124): New mode iterator.
        (V2FI): Ditto.
        (mmxintvecmode): New mode attribute.
        (mmxintvecmodelower): Ditto.
        (*mmx_maskcmpv2sf3_comm): New insn pattern.
        (*mmx_maskcmpv2sf3): Ditto.
        (vec_cmpv2sfv2si): New expander.
        (vcond<V2FI:mode>v2si): Ditto.
        (mmx_vlendvps): New insn pattern.
        (vcond<MMXMODE124:mode><MMXMODEI:mode>): Also handle V2SFmode.
        (vcondu<MMXMODE124:mode><MMXMODEI:mode>): Ditto.
        (vcond_mask_<mode><mmxintvecmodelower>): Ditto.

2021-05-11  Martin Sebor  <msebor@redhat.com>

        PR middle-end/21433
        * expr.c (expand_expr_real_1): Replace unreachable code with an assert.

2021-05-11  Richard Biener  <rguenther@suse.de>

        * gimple-fold.c (gimple_fold_call): Do not call
        maybe_fold_reference on call arguments or the static chain.
        (fold_stmt_1): Do not call maybe_fold_reference on GIMPLE_ASM
        inputs.

2021-05-11  Martin Liska  <mliska@suse.cz>

        * builtins.def (DEF_HSAIL_BUILTIN): Remove.
        (DEF_HSAIL_ATOMIC_BUILTIN): Likewise.
        (DEF_HSAIL_SAT_BUILTIN): Likewise.
        (DEF_HSAIL_INTR_BUILTIN): Likewise.
        (DEF_HSAIL_CVT_ZEROI_SAT_BUILTIN): Likewise.
        * doc/frontends.texi: Remove BRIG.
        * doc/install.texi: Likewise.
        * doc/invoke.texi: Likewise.
        * doc/standards.texi: Likewise.
        * brig-builtins.def: Removed.
        * brig/ChangeLog: Removed.
        * brig/Make-lang.in: Removed.
        * brig/brig-builtins.h: Removed.
        * brig/brig-c.h: Removed.
        * brig/brig-lang.c: Removed.
        * brig/brigfrontend/brig-arg-block-handler.cc: Removed.
        * brig/brigfrontend/brig-atomic-inst-handler.cc: Removed.
        * brig/brigfrontend/brig-basic-inst-handler.cc: Removed.
        * brig/brigfrontend/brig-branch-inst-handler.cc: Removed.
        * brig/brigfrontend/brig-cmp-inst-handler.cc: Removed.
        * brig/brigfrontend/brig-code-entry-handler.cc: Removed.
        * brig/brigfrontend/brig-code-entry-handler.h: Removed.
        * brig/brigfrontend/brig-comment-handler.cc: Removed.
        * brig/brigfrontend/brig-control-handler.cc: Removed.
        * brig/brigfrontend/brig-copy-move-inst-handler.cc: Removed.
        * brig/brigfrontend/brig-cvt-inst-handler.cc: Removed.
        * brig/brigfrontend/brig-fbarrier-handler.cc: Removed.
        * brig/brigfrontend/brig-function-handler.cc: Removed.
        * brig/brigfrontend/brig-function.cc: Removed.
        * brig/brigfrontend/brig-function.h: Removed.
        * brig/brigfrontend/brig-inst-mod-handler.cc: Removed.
        * brig/brigfrontend/brig-label-handler.cc: Removed.
        * brig/brigfrontend/brig-lane-inst-handler.cc: Removed.
        * brig/brigfrontend/brig-machine.c: Removed.
        * brig/brigfrontend/brig-machine.h: Removed.
        * brig/brigfrontend/brig-mem-inst-handler.cc: Removed.
        * brig/brigfrontend/brig-module-handler.cc: Removed.
        * brig/brigfrontend/brig-queue-inst-handler.cc: Removed.
        * brig/brigfrontend/brig-seg-inst-handler.cc: Removed.
        * brig/brigfrontend/brig-signal-inst-handler.cc: Removed.
        * brig/brigfrontend/brig-to-generic.cc: Removed.
        * brig/brigfrontend/brig-to-generic.h: Removed.
        * brig/brigfrontend/brig-util.cc: Removed.
        * brig/brigfrontend/brig-util.h: Removed.
        * brig/brigfrontend/brig-variable-handler.cc: Removed.
        * brig/brigfrontend/hsa-brig-format.h: Removed.
        * brig/brigfrontend/phsa.h: Removed.
        * brig/brigspec.c: Removed.
        * brig/config-lang.in: Removed.
        * brig/gccbrig.texi: Removed.
        * brig/lang-specs.h: Removed.
        * brig/lang.opt: Removed.

2021-05-11  Richard Biener  <rguenther@suse.de>

        PR ipa/100513
        * ipa-param-manipulation.c
        (ipa_param_body_adjustments::modify_call_stmt): Avoid
        altering SSA_NAME_DEF_STMT by adjusting the calls LHS
        via gimple_call_lhs_ptr.

2021-05-11  Alex Coplan  <alex.coplan@arm.com>

        PR target/99725
        * config/arm/arm.c (cmse_nonsecure_call_inline_register_clear):
        Avoid emitting CFA adjusts on the sp if we have the fp.

2021-05-11  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/iterators.md (VMUL_CHANGE_NLANES): Delete.
        (VMULD): New iterator.
        (VCOND): Handle V4HF and V8HF.
        (VCONQ): Fix entry for V2SF.
        * config/aarch64/aarch64-simd.md (mul_lane<mode>3): Use VMULD
        instead of VMUL.  Use a 64-bit vector mode for the indexed operand.
        (*aarch64_mul3_elt_<vswap_width_name><mode>): Merge with...
        (mul_laneq<mode>3): ...this define_insn.  Use VMUL instead of VDQSF.
        Use a 128-bit vector mode for the indexed operand.  Use stype for
        the scheduling type.

2021-05-11  Richard Biener  <rguenther@suse.de>

        * gimple-fold.c (maybe_fold_reference): Only return
        is_gimple_min_invariant values.

2021-05-11  Richard Biener  <rguenther@suse.de>

        PR middle-end/100509
        * gimple-fold.c (fold_gimple_assign): Only call
        get_symbol_constant_value on register type symbols.

2021-05-11  Srinath Parvathaneni  <srinath.parvathaneni@arm.com>
            Joe Ramsay   <joe.ramsay@arm.com>

        PR target/100419
        * config/arm/arm_mve.h (__arm_vstrwq_scatter_offset): Fix wrong arguments.
        (__arm_vcmpneq): Remove duplicate definition.
        (__arm_vstrwq_scatter_offset_p): Likewise.
        (__arm_vmaxq_x): Likewise.
        (__arm_vmlsdavaq): Likewise.
        (__arm_vmlsdavaxq): Likewise.
        (__arm_vmlsdavq_p): Likewise.
        (__arm_vmlsdavxq_p): Likewise.
        (__arm_vrmlaldavhaq): Likewise.
        (__arm_vstrbq_p): Likewise.
        (__arm_vstrbq_scatter_offset): Likewise.
        (__arm_vstrbq_scatter_offset_p): Likewise.
        (__arm_vstrdq_scatter_offset): Likewise.
        (__arm_vstrdq_scatter_offset_p): Likewise.
        (__arm_vstrdq_scatter_shifted_offset): Likewise.
        (__arm_vstrdq_scatter_shifted_offset_p): Likewise.

2021-05-11  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/100471
        * omp-low.c (lower_omp_task_reductions): For OMP_TASKLOOP, if data
        is 0, bypass the reduction loop including
        GOMP_taskgroup_reduction_unregister call.

2021-05-11  Kewen Lin  <linkw@linux.ibm.com>

        * config/rs6000/rs6000.c (struct rs6000_cost_data): New member
        costing_for_scalar.
        (rs6000_density_test): Early return if costing_for_scalar is true.
        (rs6000_init_cost): Init costing_for_scalar of rs6000_cost_data.

2021-05-11  Kewen Lin  <linkw@linux.ibm.com>

        * doc/tm.texi: Regenerated.
        * target.def (init_cost): Add new parameter costing_for_scalar.
        * targhooks.c (default_init_cost): Adjust for new parameter.
        * targhooks.h (default_init_cost): Likewise.
        * tree-vect-loop.c (_loop_vec_info::_loop_vec_info): Likewise.
        (vect_compute_single_scalar_iteration_cost): Likewise.
        (vect_analyze_loop_2): Likewise.
        * tree-vect-slp.c (_bb_vec_info::_bb_vec_info): Likewise.
        (vect_bb_vectorization_profitable_p): Likewise.
        * tree-vectorizer.h (init_cost): Likewise.
        * config/aarch64/aarch64.c (aarch64_init_cost): Likewise.
        * config/i386/i386.c (ix86_init_cost): Likewise.
        * config/rs6000/rs6000.c (rs6000_init_cost): Likewise.

2021-05-11  Kewen Lin  <linkw@linux.ibm.com>

        * config/rs6000/rs6000.c (rs6000_vect_nonmem): Renamed to
        vect_nonmem and moved into...
        (struct rs6000_cost_data): ...here.
        (rs6000_init_cost): Use vect_nonmem of cost_data instead.
        (rs6000_add_stmt_cost): Likewise.
        (rs6000_finish_cost): Likewise.

2021-05-10  Eric Botcazou  <ebotcazou@adacore.com>

        * range-op.cc (get_bool_state): Adjust head comment.
        (operator_not_equal::op1_range): Fix comment.
        (operator_bitwise_xor::op1_range): Remove call to gcc_unreachable.

2021-05-10  Martin Sebor  <msebor@redhat.com>

        PR middle-end/100425
        PR middle-end/100510
        * gimple-ssa-warn-alloca.c (pass_walloca::firast_time_p): Rename...
        (pass_walloca::xlimit_certain_p): ...to this.
        (pass_walloca::gate): Execute for any kind of handled warning.
        (pass_walloca::execute): Avoid issuing "maybe" and "unbounded"
        warnings when xlimit_certain_p is set.

2021-05-10  Pat Haugen  <pthaugen@linux.ibm.com>

        * config/rs6000/rs6000.c (rs6000_ira_change_pseudo_allocno_class):
        Return ALTIVEC_REGS if that is best_class.
        (rs6000_compute_pressure_classes): Add ALTIVEC_REGS.

2021-05-10  Christophe Lyon  <christophe.lyon@linaro.org>

        * config/arm/arm.h (CPP_SPEC): Remove error message about
        -mfloat-abi.

2021-05-10  Martin Jambor  <mjambor@suse.cz>

        * ipa-prop.h (IPA_NODE_REF): Removed.
        (IPA_NODE_REF_GET_CREATE): Likewise.
        (IPA_EDGE_REF): Likewise.
        (IPA_EDGE_REF_GET_CREATE): Likewise.
        (IS_VALID_JUMP_FUNC_INDEX): Likewise.
        * ipa-cp.c (print_all_lattices): Replaced IPA_NODE_REF with a direct
        use of ipa_node_params_sum.
        (ipcp_versionable_function_p): Likewise.
        (push_node_to_stack): Likewise.
        (pop_node_from_stack): Likewise.
        (set_single_call_flag): Replaced two IPA_NODE_REF with one single
        direct use of ipa_node_params_sum.
        (initialize_node_lattices): Replaced IPA_NODE_REF with a direct use of
        ipa_node_params_sum.
        (ipa_context_from_jfunc): Replaced IPA_EDGE_REF with a direct use of
        ipa_edge_args_sum.
        (ipcp_verify_propagated_values): Replaced IPA_NODE_REF with a direct
        use of ipa_node_params_sum.
        (self_recursively_generated_p): Likewise.
        (propagate_scalar_across_jump_function): Likewise.
        (propagate_context_across_jump_function): Replaced IPA_EDGE_REF with a
        direct use of ipa_edge_args_sum, moved the lookup after the early
        exit.  Replaced IPA_NODE_REF with a direct use of ipa_node_params_sum.
        (propagate_bits_across_jump_function): Replaced IPA_NODE_REF with
        direct uses of ipa_node_params_sum.
        (propagate_vr_across_jump_function): Likewise.
        (propagate_aggregate_lattice): Likewise.
        (propagate_aggs_across_jump_function): Likewise.
        (propagate_constants_across_call): Likewise, also replaced
        IPA_EDGE_REF with a direct use of ipa_edge_args_sum.
        (good_cloning_opportunity_p): Replaced IPA_NODE_REF with a direct use
        of ipa_node_params_sum.
        (estimate_local_effects): Likewise.
        (add_all_node_vals_to_toposort): Likewise.
        (propagate_constants_topo): Likewise.
        (ipcp_propagate_stage): Likewise.
        (ipcp_discover_new_direct_edges): Likewise.
        (calls_same_node_or_its_all_contexts_clone_p): Likewise.
        (cgraph_edge_brings_value_p): Likewise (in both overloaded functions).
        (get_info_about_necessary_edges): Likewise.
        (want_remove_some_param_p): Likewise.
        (create_specialized_node): Likewise.
        (self_recursive_pass_through_p): Likewise.
        (self_recursive_agg_pass_through_p): Likewise.
        (find_more_scalar_values_for_callers_subset): Likewise and also
        replaced IPA_EDGE_REF with direct uses of ipa_edge_args_sum, in one
        case replacing two of those with a single query.
        (find_more_contexts_for_caller_subset): Likewise for the
        ipa_polymorphic_call_context overload.
        (intersect_aggregates_with_edge): Replaced IPA_EDGE_REF with a direct
        use of ipa_edge_args_sum.  Replaced IPA_NODE_REF with direct uses of
        ipa_node_params_sum.
        (find_aggregate_values_for_callers_subset): Likewise, also reusing
        results of ipa_edge_args_sum->get.
        (cgraph_edge_brings_all_scalars_for_node): Replaced IPA_NODE_REF with
        direct uses of ipa_node_params_sum, replaced IPA_EDGE_REF with a
        direct use of ipa_edge_args_sum.
        (cgraph_edge_brings_all_agg_vals_for_node): Likewise, moved node
        summary query after the early exit and reused the result later.
        (decide_about_value): Replaced IPA_NODE_REF with a direct use of
        ipa_node_params_sum.
        (decide_whether_version_node): Likewise.  Removed re-querying for
        summaries after cloning.
        (spread_undeadness): Replaced IPA_NODE_REF with a direct use of
        ipa_node_params_sum.
        (has_undead_caller_from_outside_scc_p): Likewise, reusing results of
        some queries.
        (identify_dead_nodes): Likewise.
        (ipcp_store_bits_results): Replaced IPA_NODE_REF with direct uses of
        ipa_node_params_sum.
        (ipcp_store_vr_results): Likewise.
        * ipa-fnsummary.c (evaluate_properties_for_edge): Likewise.
        (ipa_fn_summary_t::duplicate): Likewise.
        (analyze_function_body): Likewise.
        (estimate_calls_size_and_time): Likewise.
        (ipa_cached_call_context::duplicate_from): Likewise.
        (ipa_call_context::equal_to): Likewise.
        (remap_edge_params): Likewise.
        (ipa_merge_fn_summary_after_inlining): Likewise.
        (inline_read_section): Likewise.
        * ipa-icf.c (sem_function::param_used_p): Likewise.
        * ipa-modref.c (compute_parm_map): Likewise.
        (compute_parm_map): Replaced IPA_EDGE_REF with a direct use of
        ipa_edge_args_sum.
        (get_access_for_fnspec): Replaced IPA_NODE_REF with a direct use of
        ipa_node_params_sum and replaced IPA_EDGE_REF with a direct use of
        ipa_edge_args_sum.
        * ipa-profile.c (check_argument_count): Likewise.
        * ipa-prop.c (ipa_alloc_node_params): Replaced IPA_NODE_REF_GET_CREATE
        with a direct use of ipa_node_params_sum.
        (ipa_initialize_node_params): Likewise.
        (ipa_print_node_jump_functions_for_edge): Replaced IPA_EDGE_REF with a
        direct use of ipa_edge_args_sum and reused the query result.
        (ipa_compute_jump_functions_for_edge): Replaced IPA_NODE_REF with a
        direct use of ipa_node_params_sum and replaced IPA_EDGE_REF with a
        direct use of ipa_edge_args_sum.
        (ipa_note_param_call): Replaced IPA_NODE_REF with a direct use of
        ipa_node_params_sum and reused the result of the query.
        (ipa_analyze_node): Likewise.
        (ipa_analyze_controlled_uses): Replaced IPA_NODE_REF with a direct use
        of ipa_node_params_sum.
        (update_jump_functions_after_inlining): Replaced IPA_EDGE_REF with
        direct uses of ipa_edge_args_sum.
        (update_indirect_edges_after_inlining): Replaced IPA_NODE_REF with
        direct uses of ipa_node_params_sum and replaced IPA_EDGE_REF with a
        direct use of ipa_edge_args_sum.  Removed superficial re-querying the
        top edge summary.
        (propagate_controlled_uses): Replaced IPA_NODE_REF with direct uses of
        ipa_node_params_sum and replaced IPA_EDGE_REF with a direct use of
        ipa_edge_args_sum.
        (ipa_propagate_indirect_call_infos): Replaced IPA_EDGE_REF with a
        direct use of ipa_edge_args_sum.
        (ipa_edge_args_sum_t::duplicate): Replaced IPA_NODE_REF with a direct
        use of ipa_node_params_sum.
        (ipa_print_node_params): Likewise.
        (ipa_write_node_info): Likewise and also replaced IPA_EDGE_REF with
        direct uses of ipa_edge_args_sum.
        (ipa_read_edge_info): Replaced IPA_EDGE_REF with a direct use of
        ipa_edge_args_sum.
        (ipa_read_node_info): Replaced IPA_NODE_REF with a direct use of
        ipa_node_params_sum.
        (ipa_prop_write_jump_functions): Likewise.  Move variable node to the
        scopes where it is used.

2021-05-10  Uroš Bizjak  <ubizjak@gmail.com>

        * config/i386/i386-expand.c (ix86_expand_sse_movcc)
        <case E_V2SImode>: Force op_true to register.

2021-05-10  Christophe Lyon  <christophe.lyon@linaro.org>

        * config/arm/iterators.md (MVE_FP_COMPARISONS): New.
        * config/arm/mve.md (mve_vcmp<mve_cmp_op>q_f<mode>)
        (mve_vcmp<mve_cmp_op>q_n_f<mode>): New, merge all vcmp_*f*
        patterns.
        (mve_vcmpeqq_f<mode>, mve_vcmpeqq_n_f<mode>, mve_vcmpgeq_f<mode>)
        (mve_vcmpgeq_n_f<mode>, mve_vcmpgtq_f<mode>)
        (mve_vcmpgtq_n_f<mode>, mve_vcmpleq_f<mode>)
        (mve_vcmpleq_n_f<mode>, mve_vcmpltq_f<mode>)
        (mve_vcmpltq_n_f<mode>, mve_vcmpneq_f<mode>)
        (mve_vcmpneq_n_f<mode>): Remove.
        * config/arm/unspecs.md (VCMPEQQ_F, VCMPEQQ_N_F, VCMPGEQ_F)
        (VCMPGEQ_N_F, VCMPGTQ_F, VCMPGTQ_N_F, VCMPLEQ_F, VCMPLEQ_N_F)
        (VCMPLTQ_F, VCMPLTQ_N_F, VCMPNEQ_F, VCMPNEQ_N_F): Remove.

2021-05-10  Christophe Lyon  <christophe.lyon@linaro.org>

        * config/arm/iterators.md (MVE_COMPARISONS): New.
        (mve_cmp_op): New.
        (mve_cmp_type): New.
        * config/arm/mve.md (mve_vcmp<mve_cmp_op>q_<mode>): New, merge all
        mve_vcmp patterns.
        (mve_vcmpneq_<mode>, mve_vcmpcsq_n_<mode>, mve_vcmpcsq_<mode>)
        (mve_vcmpeqq_n_<mode>, mve_vcmpeqq_<mode>, mve_vcmpgeq_n_<mode>)
        (mve_vcmpgeq_<mode>, mve_vcmpgtq_n_<mode>, mve_vcmpgtq_<mode>)
        (mve_vcmphiq_n_<mode>, mve_vcmphiq_<mode>, mve_vcmpleq_n_<mode>)
        (mve_vcmpleq_<mode>, mve_vcmpltq_n_<mode>, mve_vcmpltq_<mode>)
        (mve_vcmpneq_n_<mode>, mve_vcmpltq_n_<mode>, mve_vcmpltq_<mode>)
        (mve_vcmpneq_n_<mode>): Remove.

2021-05-10  Christophe Lyon  <christophe.lyon@linaro.org>

        * config/arm/arm_mve.h (__arm_vcmp*): Remove 's' suffix.
        * config/arm/arm_mve_builtins.def (vcmp*): Remove 's' suffix.
        * config/arm/mve.md (mve_vcmp*): Remove 's' suffix in pattern
        names.

2021-05-10  Christophe Lyon  <christophe.lyon@linaro.org>

        * config/arm/arm_mve_builtins.def (vcmpneq_u): Remove.
        (vcmpneq_n_u): Likewise.
        (vcmpeqq_u,): Likewise.
        (vcmpeqq_n_u): Likewise.
        * config/arm/iterators.md (supf): Remove VCMPNEQ_U, VCMPEQQ_U,
        VCMPEQQ_N_U and VCMPNEQ_N_U.
        * config/arm/mve.md (mve_vcmpneq): Remove <supf> iteration.
        (mve_vcmpeqq_n): Likewise.
        (mve_vcmpeqq): Likewise.
        (mve_vcmpneq_n): Likewise.

2021-05-10  Christophe Lyon  <christophe.lyon@linaro.org>

        * config/arm/arm_mve.h (__arm_vcmpeq*u*, __arm_vcmpne*u*): Call
        the 's' version of the builtin.

2021-05-10  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/100492
        * tree-loop-distribution.c (find_seed_stmts_for_distribution):
        Find nothing when the loop contains an irreducible region.

2021-05-10  Richard Biener  <rguenther@suse.de>

        PR middle-end/100464
        PR c++/100468
        * gimple-fold.c (canonicalize_constructor_val): Do not set
        TREE_ADDRESSABLE.

2021-05-10  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/100434
        * tree-ssa-dse.c (initialize_ao_ref_for_dse): Handle
        call LHS.
        (dse_optimize_stmt): Handle call LHS by dropping the
        LHS or the whole call if it doesn't have other
        side-effects.
        (pass_dse::execute): Adjust.

2021-05-10  Martin Liska  <mliska@suse.cz>

        * Makefile.in: Add missing genversion rule.

2021-05-10  Alex Coplan  <alex.coplan@arm.com>

        PR target/99960
        * config/arm/mve.md (*mve_mov<mode>): Simplify output code. Use
        vldrw.u32 and vstrw.32 for V2D[IF]mode loads and stores.

2021-05-10  Martin Liska  <mliska@suse.cz>

        * builtins.c (is_builtin_name): Use startswith
        function instead of strncmp.
        * collect2.c (main): Likewise.
        (has_lto_section): Likewise.
        (scan_libraries): Likewise.
        * coverage.c (coverage_checksum_string): Likewise.
        (coverage_init): Likewise.
        * dwarf2out.c (is_cxx): Likewise.
        (gen_compile_unit_die): Likewise.
        * gcc-ar.c (main): Likewise.
        * gcc.c (init_spec): Likewise.
        (read_specs): Likewise.
        (execute): Likewise.
        (check_live_switch): Likewise.
        * genattrtab.c (write_attr_case): Likewise.
        (IS_ATTR_GROUP): Likewise.
        * gencfn-macros.c (main): Likewise.
        * gengtype.c (type_for_name): Likewise.
        (gen_rtx_next): Likewise.
        (get_file_langdir): Likewise.
        (write_local): Likewise.
        * genmatch.c (get_operator): Likewise.
        (get_operand_type): Likewise.
        (expr::gen_transform): Likewise.
        * genoutput.c (validate_optab_operands): Likewise.
        * incpath.c (add_sysroot_to_chain): Likewise.
        * langhooks.c (lang_GNU_C): Likewise.
        (lang_GNU_CXX): Likewise.
        (lang_GNU_Fortran): Likewise.
        (lang_GNU_OBJC): Likewise.
        * lto-wrapper.c (run_gcc): Likewise.
        * omp-general.c (omp_max_simt_vf): Likewise.
        * omp-low.c (omp_runtime_api_call): Likewise.
        * opts-common.c (parse_options_from_collect_gcc_options): Likewise.
        * read-rtl-function.c (function_reader::read_rtx_operand_r): Likewise.
        * real.c (real_from_string): Likewise.
        * selftest.c (assert_str_startswith): Likewise.
        * timevar.c (timer::validate_phases): Likewise.
        * tree.c (get_file_function_name): Likewise.
        * ubsan.c (ubsan_use_new_style_p): Likewise.
        * varasm.c (default_function_rodata_section): Likewise.
        (incorporeal_function_p): Likewise.
        (default_section_type_flags): Likewise.
        * system.h (startswith): Define startswith.

2021-05-10  Martin Liska  <mliska@suse.cz>

        * bitmap.h (class auto_bitmap): Remove
        __cplusplus >= 201103.
        * config/aarch64/aarch64.c: Likewise.
        * gimple-ssa-store-merging.c (store_immediate_info::store_immediate_info):
        Likewise.
        * sbitmap.h: Likewise.

2021-05-10  Martin Liska  <mliska@suse.cz>

        * Makefile.in: Rename gcov-iov to genversion and depend
        on version.h (instead of gcov-iov.h).
        * gcov-io.h: Include version.h instread of gcov-iov.h.
        * gengtype-state.c (read_state_version): Likewise.
        * gcov-iov.c: Moved to...
        * genversion.c: ...here.
        * lto-streamer.h (LTO_major_version): Define it with
        GCC_major_version.
        * version.c: Removed.
        * version.h: Removed.

2021-05-10  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc.md (UNSPEC_ARC_DMPYWH): Define.
        * config/arc/simdext.md (VCT): Add predicates for iterator
        elements.
        (EMUVEC): Define.
        (voptab): Likewise.
        (vec_widen_<V_US>mult_hi_v4hi): Change pattern predicate.
        (<voptab>v2si3): New patterns.
        (neg): Likewise.
        (reduc_plus_scal_v4hi): Likewise.
        (reduc_plus_scal_v2si): Likewise.
        (vec_duplicatev2si): Likewise.
        (vec_duplicatev4hi): Likewise.

2021-05-10  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/simdext.md: Format and cleanup file.

2021-05-10  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/simdext.md (movmisalignv2hi): Allow misaligned access
        only when munaligned-access option is on.
        (movmisalign<mode>): Likewise.

2021-05-10  Claudiu Zissulescu  <claziss@synopsys.com>

        * common/config/arc/arc-common.c (arc_handle_option): Remove dot
        from string.
        * config/arc/arc.c (arc_reorg): Remove underscore from string.

2021-05-10  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc.h (CLZ_DEFINED_VALUE_AT_ZERO): Define.
        (CTZ_DEFINED_VALUE_AT_ZERO): Likewise.
        * config/arc/arc.md (clrsbsi2): Cleanup pattern.
        (norm_f): Likewise.
        (ffs): Likewise.
        (ffs_f): Likewise.
        (clzsi2): Use fls instruction when available.
        (arc_clzsi2): Likewise.

2021-05-10  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc.h (ADDITIONAL_REGISTER_NAMES): Add r26 and r27.

2021-05-10  Claudiu Zissulescu  <claziss@synopsys.com>

        * doc/extend.texi (__builtin_arc_sr): Swap arguments.

2021-05-10  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        PR middle-end/100467
        * toplev.c (compile_file): Call insn_locations_init before
        targetm.asm_out.code_end.

2021-05-07  Andrew Stubbs  <ams@codesourcery.com>

        Revert:
        2021-05-07  Andrew Stubbs  <ams@codesourcery.com>

        * config/gcn/gcn.c (gcn_scalar_mode_supported_p): Disable TImode.

2021-05-07  Jakub Jelinek  <jakub@redhat.com>
            Andrew Stubbs  <amd@codesourcery.com>

        PR target/100418
        * builtins.c (try_store_by_multiple_pieces): Use force_operand for
        emit_move_insn operands.

2021-05-07  Eric Botcazou  <ebotcazou@adacore.com>

        * cfgexpand.c (expand_gimple_basic_block): Do not inherit a current
        location for the outgoing edges of an empty block.
        * dwarf2out.c (add_subscript_info): Retrieve the bounds and index
        type by means of the get_array_descr_info langhook, if it is set and
        returns true.  Remove obsolete code dealing with unnamed subtypes.

2021-05-07  Andrew MacLeod  <amacleod@redhat.com>

        * gimple-range-cache.cc (ssa_block_ranges): Virtualize.
        (sbr_vector): Renamed from ssa_block_cache.
        (sbr_vector::sbr_vector): Allocate from obstack abd initialize.
        (ssa_block_ranges::~ssa_block_ranges): Remove.
        (sbr_vector::set_bb_range): Use varying and undefined cached values.
        (ssa_block_ranges::set_bb_varying): Remove.
        (sbr_vector::get_bb_range): Adjust assert.
        (sbr_vector::bb_range_p): Adjust assert.
        (~block_range_cache): No freeing loop required.
        (block_range_cache::get_block_ranges): Remove.
        (block_range_cache::set_bb_range): Inline get_block_ranges.
        (block_range_cache::set_bb_varying): Remove.
        * gimple-range-cache.h (set_bb_varying): Remove prototype.
        * value-range.h (irange_allocator::get_memory): New.

2021-05-07  Andrew MacLeod  <amacleod@redhat.com>

        * gimple-range-cache.cc (non_null_ref::non_null_deref_p): Search
        dominator tree is available and requested.
        (ranger_cache::ssa_range_in_bb): Don't search dom tree here.
        (ranger_cache::fill_block_cache): Don't search dom tree here either.
        * gimple-range-cache.h (non_null_deref_p): Add dom_search param.

2021-05-07  Andrew MacLeod  <amacleod@redhat.com>

        * gimple-range.cc (gimple_ranger::range_on_exit): Handle block with
        only PHI nodes better.

2021-05-07  Andrew MacLeod  <amacleod@redhat.com>

        * gimple-range-edge.h (gimple_outgoing_range): Rename from
        outgoing_range.
        (gcond_edge_range): Export prototype.
        * gimple-range-edge.cc (gcond_edge_range): New.
        (gimple_outgoing_range::edge_range_p): Use gcond_edge_range.
        * gimple-range-gori.h (gori_compute): Use gimple_outgoing_range.

2021-05-07  Andrew MacLeod  <amacleod@redhat.com>

        * gimple-range-edge.cc (outgoing_range::calc_switch_ranges): Compute
        default range into a temp and allocate only what is needed.

2021-05-07  Andrew MacLeod  <amacleod@redhat.com>

        * range-op.cc (operator_trunc_mod::wi_fold): x % 0 is UNDEFINED.

2021-05-07  Andrew MacLeod  <amacleod@redhat.com>

        * gimple-range.h (gimple_range_global): Pick up parameter initial
        values, and use-before defined locals are UNDEFINED.

2021-05-07  Eric Botcazou  <ebotcazou@adacore.com>

        * doc/extend.texi (scalar_storage_order): Mention effect on pointer
        and vector fields.
        * tree.h (reverse_storage_order_for_component_p): Return false if
        the type is a pointer.

2021-05-07  Andrew Stubbs  <ams@codesourcery.com>

        * config/gcn/gcn.c (gcn_scalar_mode_supported_p): Disable TImode.

2021-05-07  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/98218
        * config/i386/i386-expand.c (ix86_expand_sse_movcc):
        Handle V8QI, V4HI and V2SI modes.
        * config/i386/mmx.md (mmx_pblendvb): New insn pattern.
        * config/i386/sse.md (unspec): Move UNSPEC_BLENDV ...
        * config/i386/i386.md (unspec): ... here.

2021-05-07  Tobias Burnus  <tobias@codesourcery.com>
            Tom de Vries  <tdevries@suse.de>

        * omp-low.c (lower_rec_simd_input_clauses): Set max_vf = 1 if
        a truth_value_p reduction variable is nonintegral.

2021-05-07  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/100445
        * config/i386/i386-expand.c (ix86_use_mask_cmp_p):
        Return false for mode sizes < 16.

2021-05-07  Jakub Jelinek  <jakub@redhat.com>

        PR target/100445
        * config/i386/mmx.md (*xop_pcmov_<mode>): New define_insn.

2021-05-06  Martin Jambor  <mjambor@suse.cz>

        * ipa-sra.c (ipa_sra_dump_all_summaries): Dump edge summaries even
        when there is no function summary.
        (ipa_sra_summarize_function): produce edge summaries even when
        bailing out early.

2021-05-06  Tom Tromey  <tom@tromey.com>

        * godump.c (string_hash_eq): Remove.
        (go_finish): Use htab_eq_string.

2021-05-06  Tom Tromey  <tom@tromey.com>

        * gengtype-state.c (read_state): Use htab_eq_string.
        (string_eq): Remove.

2021-05-06  Tom Tromey  <tom@tromey.com>

        * gensupport.c (htab_eq_string): Remove.

2021-05-06  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        PR ipa/97937
        * debug.h (gcc_debug_hooks): Add set_ignored_loc function pointer.
        * dwarf2out.h (dw_fde_node::ignored_debug): New data item.
        * dbxout.c (dbx_debug_hooks, xcoff_debug_hooks): Add dummy
        set_ignored_loc callbacks.
        * debug.c (do_nothing_debug_hooks): Likewise.
        * vmsdbgout.c (vmsdbg_debug_hooks): Likewise.
        * dwarf2out.c (text_section_used, cold_text_section_used): Remove.
        (in_text_section_p, last_text_label, last_cold_label,
        switch_text_ranges, switch_cold_ranges): New data items.
        (dwarf2out_note_section_used): Remove.
        (dwarf2out_begin_prologue): Set fde->ignored_debug and
        in_text_section_p.
        (mark_ignored_debug_section): New helper function.
        (dwarf2out_end_epilogue, dwarf2out_switch_text_section): Call
        mark_ignored_debug_section.
        (dwarf2_debug_hooks): Use dwarf2out_set_ignored_loc.
        (dwarf2_lineno_debug_hooks): Use dummy for set_ignored_loc.
        (size_of_aranges): Adjust formula for multi-part text ranges size.
        (output_aranges): Output multi-part text ranges.
        (dwarf2out_set_ignored_loc): New callback function.
        (dwarf2out_finish): Output multi-part text ranges.
        (dwarf2out_c_finalize): Clear new data items.
        * final.c (final_start_function_1): Call set_ignored_loc callback.
        (final_scan_insn_1): Likewise.
        * ggc-page.c (gt_ggc_mx): New helper function.
        * stringpool.c (gt_pch_nx): Likewise.

2021-05-06  Richard Biener  <rguenther@suse.de>

        * timevar.def (TV_TREE_INSERT_PHI_NODES): Remove.
        (TV_TREE_SSA_REWRITE_BLOCKS): Likewise.
        (TV_TREE_INTO_SSA): New.
        * tree-into-ssa.c (insert_phi_nodes): Do not account separately.
        (rewrite_blocks): Likewise.
        (pass_data_build_ssa): Account to TV_TREE_INTO_SSA.

2021-05-06  Jakub Jelinek  <jakub@redhat.com>

        * tree-ssa-phiopt.c (value_replacement, minmax_replacement,
        abs_replacement, xor_replacement,
        cond_removal_in_popcount_clz_ctz_pattern,
        replace_phi_edge_with_variable): Change type of phi argument from
        gimple * to gphi *.

2021-05-06  Richard Biener  <rguenther@suse.de>

        * tree-ssa-loop-split.c (split_loop): Delay updating SSA form.
        Output an opt-info message.
        (do_split_loop_on_cond): Likewise.
        (tree_ssa_split_loops): Update SSA form here.

2021-05-06  Richard Biener  <rguenther@suse.de>

        * tree-inline.c (tree_function_versioning): Fix DECL_BY_REFERENCE
        return variable removal.

2021-05-06  Marius Hillenbrand  <mhillen@linux.ibm.com>

        * config/s390/s390-builtins.def (O_M5, O1_M5, ...): Remove unused macros.
        (s390_vec_permi_s64, s390_vec_permi_b64, s390_vec_permi_u64)
        (s390_vec_permi_dbl, s390_vpdi): Use the O3_U2 type for the immediate
        operand.
        * config/s390/s390.c (s390_const_operand_ok): Remove unused
        values.

2021-05-06  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/94589
        * tree-ssa-phiopt.c (tree_ssa_phiopt_worker): Call
        spaceship_replacement.
        (cond_only_block_p, spaceship_replacement): New functions.

2021-05-06  Richard Biener  <rguenther@suse.de>

        PR ipa/100373
        * tree-emutls.c (gen_emutls_addr): Pass in whether we're
        dealing with a debug use and only query existing addresses
        if so.
        (lower_emutls_1): Avoid splitting out addresses for debug
        stmts, reset the debug stmt when we fail to find existing
        lowered addresses.
        (lower_emutls_phi_arg): Set wi.stmt.

2021-05-06  Christoph Muellner  <cmuellner@gcc.gnu.org>

        PR target/100266
        * config/riscv/riscv.c (riscv_block_move_loop): Use cbranch helper.
        * config/riscv/riscv.md (cbranch<mode>4): Generate helpers.
        (stack_protect_test): Use cbranch helper.

2021-05-05  Eric Botcazou  <ebotcazou@adacore.com>

        PR target/100402
        * config/i386/i386.c (ix86_compute_frame_layout): For a SEH target,
        always return the establisher frame for __builtin_frame_address (0).

2021-05-05  Ivan Sorokin  <vanyacpp@gmail.com>

        PR target/91400
        * config/i386/i386-builtins.c (ix86_cpu_model_type_node): New.
        (ix86_cpu_model_var): Likewise.
        (ix86_cpu_features2_type_node): Likewise.
        (ix86_cpu_features2_var): Likewise.
        (fold_builtin_cpu): Cache __cpu_model and __cpu_features2 with
        their types.

2021-05-05  Martin Sebor  <msebor@redhat.com>

        * passes.def (pass_warn_printf): Run after SSA.

2021-05-05  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

        * config/arm/neon.md (neon_vtst_combine<mode>): New pattern.
        * config/arm/predicates.md (minus_one_operand): New predicate.

2021-05-05  Jeff Law  <jlaw@tachyum.com>

        * config/avr/avr.md: Remove references to CC_STATUS_INIT.

2021-05-05  Stefan Schulze Frielinghaus  <stefansf@linux.ibm.com>

        PR rtl-optimization/100263
        * postreload.c (move2add_valid_value_p): Ensure register can
        change mode.

2021-05-05  Eric Botcazou  <ebotcazou@adacore.com>

        PR rtl-optimization/100411
        * cfgcleanup.c (try_crossjump_to_edge): Also skip end of prologue
        and beginning of function markers.

2021-05-05  Jeff Law  <jlaw@tachyum.com>

        * config/cr16/cr16.h (NOTICE_UPDATE_CC): Remove.
        * config/cr16/cr16.c (notice_update_cc): Remove.
        * config/cr16/cr16-protos.h (notice_update_cc): Remove.

2021-05-05  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/98218
        * config/i386/i386-expand.c (ix86_expand_int_sse_cmp):
        Handle V8QI, V4HI and V2SI modes.
        * config/i386/i386.c (ix86_build_const_vector): Handle V2SImode.
        (ix86_build_signbit_mask): Ditto.
        * config/i386/mmx.md (MMXMODE14): New mode iterator.
        (<smaxmin:code><MMXMODE14:mode>3): New expander.
        (*mmx_<smaxmin:code><MMXMODE14:mode>3): New insn pattern.
        (<umaxmin:code><MMXMODE24:mode>3): New expander.
        (*mmx_<umaxmin:code><MMXMODE24:mode>3): New insn pattern.
        (vec_cmp<MMXMODEI:mode><MMXMODEI:mode>): New expander.
        (vec_cmpu<MMXMODEI:mode><MMXMODEI:mode>): Ditto.
        (vcond<MMXMODEI:mode><MMXMODEI:mode>): Ditto.
        (vcondu<MMXMODEI:mode><MMXMODEI:mode>): Ditto.
        (vcond_mask_<MMXMODEI:mode><MMXMODEI:mode>): Ditto.

2021-05-05  Eric Botcazou  <ebotcazou@adacore.com>

        * dwarf2out.c (loc_list_from_tree_1) <DECL>: During early DWARF, do
        not expand the VALUE_EXPR of variables put in the non-local frame.
        * gimplify.c (gimplify_type_sizes) <RECORD_TYPE>: If the type is not
        to be ignored for debug info, ensure its variable offsets are not.

2021-05-05  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/79333
        * tree-ssa-sccvn.c (eliminate_dom_walker::eliminate_stmt):
        Fold stmt following SSA edges.

2021-05-05  Richard Biener  <rguenther@suse.de>

        PR middle-end/100394
        * calls.c (expand_call): Preserve possibly throwing calls.
        * cfgexpand.c (expand_call_stmt): When a call can throw signal
        RTL expansion there are side-effects.
        * tree-ssa-dce.c (mark_stmt_if_obviously_necessary): Simplify,
        mark all possibly throwing stmts necessary unless we can elide
        dead EH.
        * tree-ssa-dse.c (pass_dse::execute): Preserve exceptions unless
        -fdelete-dead-exceptions.
        * tree.h (DECL_PURE_P): Add note about exceptions.

2021-05-05  Alexandre Oliva  <oliva@adacore.com>

        * config/i386/vxworks.h (DBX_REGISTER_NUMBER): Make it
        unconditional.

2021-05-04  David Edelsohn  <dje.gcc@gmail.com>

        * config/rs6000/rs6000-call.c (rs6000_output_mi_thunk): Use
        get_fnname_from_decl for name of thunk.
        * config/rs6000/rs6000.c (rs6000_declare_alias): Use assemble_name
        and ASM_OUTPUT_LABEL.
        (rs6000_xcoff_declare_function_name): Use assemble_name and
        ASM_OUTPUT_LABEL.
        (rs6000_xcoff_declare_object_name): Use ASM_OUTPUT_LABEL.
        (rs6000_xcoff_encode_section_info): Don't add mapping class
        for aliases.  Always add [DS] mapping class to primary
        FUNCTION_DECL.
        (rs6000_asm_weaken_decl): Don't explicitly add [DS].

2021-05-04  Martin Sebor  <msebor@redhat.com>

        PR middle-end/100307
        * builtins.c (compute_objsize_r): Clear base0 for pointers.

2021-05-04  Jeff Law  <jlaw@tachyum.com>

        * config/bfin/bfin.h (NOTICE_UPDATE_CC): Remove.

2021-05-04  Segher Boessenkool  <segher@kernel.crashing.org>

        * caller-save.c: Remove CC0.
        * cfgcleanup.c: Remove CC0.
        * cfgrtl.c: Remove CC0.
        * combine.c: Remove CC0.
        * compare-elim.c: Remove CC0.
        * conditions.h: Remove CC0.
        * config/h8300/h8300.h: Remove CC0.
        * config/h8300/h8300-protos.h: Remove CC0.
        * config/h8300/peepholes.md: Remove CC0.
        * config/i386/x86-tune-sched.c: Remove CC0.
        * config/m68k/m68k.c: Remove CC0.
        * config/rl78/rl78.c: Remove CC0.
        * config/sparc/sparc.c: Remove CC0.
        * config/xtensa/xtensa.c: Remove CC0.
        (gen_conditional_move):  Use pc_rtx instead of cc0_rtx in a piece of
        RTL where that is used as a placeholder only.
        * cprop.c: Remove CC0.
        * cse.c: Remove CC0.
        * cselib.c: Remove CC0.
        * df-problems.c: Remove CC0.
        * df-scan.c: Remove CC0.
        * doc/md.texi: Remove CC0.  Adjust an example.
        * doc/rtl.texi: Remove CC0.  Adjust an example.
        * doc/tm.texi: Regenerate.
        * doc/tm.texi.in: Remove CC0.
        * emit-rtl.c: Remove CC0.
        * final.c: Remove CC0.
        * fwprop.c: Remove CC0.
        * gcse-common.c: Remove CC0.
        * gcse.c: Remove CC0.
        * genattrtab.c: Remove CC0.
        * genconfig.c: Remove CC0.
        * genemit.c: Remove CC0.
        * genextract.c: Remove CC0.
        * gengenrtl.c: Remove CC0.
        * genrecog.c: Remove CC0.
        * haifa-sched.c: Remove CC0.
        * ifcvt.c: Remove CC0.
        * ira-costs.c: Remove CC0.
        * ira.c: Remove CC0.
        * jump.c: Remove CC0.
        * loop-invariant.c: Remove CC0.
        * lra-constraints.c: Remove CC0.
        * lra-eliminations.c: Remove CC0.
        * optabs.c: Remove CC0.
        * postreload-gcse.c: Remove CC0.
        * postreload.c: Remove CC0.
        * print-rtl.c: Remove CC0.
        * read-rtl-function.c: Remove CC0.
        * reg-notes.def: Remove CC0.
        * reg-stack.c: Remove CC0.
        * reginfo.c: Remove CC0.
        * regrename.c: Remove CC0.
        * reload.c: Remove CC0.
        * reload1.c: Remove CC0.
        * reorg.c: Remove CC0.
        * resource.c: Remove CC0.
        * rtl.c: Remove CC0.
        * rtl.def: Remove CC0.
        * rtl.h: Remove CC0.
        * rtlanal.c: Remove CC0.
        * sched-deps.c: Remove CC0.
        * sched-rgn.c: Remove CC0.
        * shrink-wrap.c: Remove CC0.
        * simplify-rtx.c: Remove CC0.
        * system.h: Remove CC0.  Poison NOTICE_UPDATE_CC, CC_STATUS_MDEP_INIT,
        CC_STATUS_MDEP, and CC_STATUS.
        * target.def: Remove CC0.
        * valtrack.c: Remove CC0.
        * var-tracking.c: Remove CC0.

2021-05-04  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/100414
        * tree-ssa-phiopt.c (get_non_trapping): Do not compute dominance
        info here.
        (tree_ssa_phiopt_worker): But unconditionally here.

2021-05-04  Tobias Burnus  <tobias@codesourcery.com>

        * omp-low.c (lower_rec_input_clauses, lower_reduction_clauses): Handle
        && and || with floating-point and complex arguments.

2021-05-04  Eric Botcazou  <ebotcazou@adacore.com>

        * tree-inline.c (insert_debug_decl_map): Delete.
        (copy_debug_stmt): Minor tweak.
        (setup_one_parameter): Do not use a variable if the value is either
        a read-only DECL or a non-addressable local variable in the caller.
        In this case, insert the debug-only variable in the map manually.
        (expand_call_inline): Do not generate a CLOBBER for these values.
        * tree-inline.h (debug_map): Minor tweak.

2021-05-04  Eric Botcazou  <ebotcazou@adacore.com>

        * builtins.c (builtin_with_linkage_p): Return true for stp[n]cpy.
        * symtab.c (symtab_node::output_to_lto_symbol_table_p): Tidy up.

2021-05-04  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/100329
        * tree-ssa-reassoc.c (can_reassociate_p): Do not reassociate
        asm goto defs.
        (insert_stmt_after): Assert we're not running into asm goto.

2021-05-04  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/100398
        * tree-ssa-dse.c (pass_dse::execute): Preserve control
        altering stmts.

2021-05-04  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

        * builtins.c (try_store_by_multiple_pieces): Fix constfun's prototype.

2021-05-04  Alexandre Oliva  <oliva@adacore.com>

        * builtins.c (try_store_by_multiple_pieces): New.
        (expand_builtin_memset_args): Use it.  If target_char_cast
        fails, proceed as for non-constant val.  Pass len's ctz to...
        * expr.c (clear_storage_hints): ... this.  Try store by
        multiple pieces after setmem.
        (clear_storage): Adjust.
        * expr.h (clear_storage_hints): Likewise.
        (try_store_by_multiple_pieces): Declare.
        * passes.def: Replace the last copy_prop with ccp.

2021-05-03  Tom de Vries  <tdevries@suse.de>

        PR target/100321
        * omp-low.c (lower_rec_input_clauses): Disable SIMT for user-defined
        reduction.

2021-05-03  Richard Biener  <rguenther@suse.de>

        * tree-ssa-dse.c (dse_classify_store): Track two PHI defs.

2021-05-03  Richard Biener  <rguenther@suse.de>

        * tree-ssa-dse.c: Do not include domwalk.h but cfganal.h.
        (dse_dom_walker): Remove.
        (dse_dom_walker::dse_optimize_stmt): Rename...
        (dse_optimize_stmt): ... to this, pass in live_bytes sbitmap.
        (dse_dom_walker::before_dom_children): Inline ...
        (pass_dse::execute): ... here.  Perform a reverse program
        order walk.

2021-05-03  H.J. Lu  <hjl.tools@gmail.com>

        PR bootstrap/99703
        * configure: Regenerated.

2021-05-03  Ilya Leoshkevich  <iii@linux.ibm.com>

        PR target/100217
        * config/s390/s390.c (s390_hard_fp_reg_p): New function.
        (s390_md_asm_adjust): Handle hard registers.

2021-05-03  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/100382
        * tree-ssa-dse.c: Include tree-eh.h.
        (dse_dom_walker::before_dom_children): Don't remove stmts if
        stmt_unremovable_because_of_non_call_eh_p is true.

2021-05-02  David Edelsohn  <dje.gcc@gmail.com>

        * varasm.c (compute_reloc_for_var): Split out from...
        (get_variable_section): Use it.
        * output.h (compute_reloc_for_var): Declare.
        * config/rs6000/rs6000-protos.h
        (rs6000_xcoff_asm_output_aligned_decl_common): Change alignment to
        unsigned int.
        * config/rs6000/rs6000.c (rs6000_legitimize_tls_address_aix):
        Don't append storage mapping class to symbol.
        (rs6000_xcoff_asm_named_section): Add BS and UL mapping classes.
        Don't convert TLS BSS to common.
        (rs6000_xcoff_unique_section): Don't fall back to select_secton.
        (rs6000_xcoff_section_type_flags): Add SECTION_BSS if DECL is
        bss_initializer.
        (rs6000_xcoff_asm_globalize_decl_name): Don't strip storage
        mapping class.
        (rs6000_xcoff_asm_output_aligned_decl_common): Align is unsigned int.
        If align is 0 from TLS class, use the same rules as varasm.c
        If not common, switch to BSS section manually.
        If common, emit appropriate comm or lcomm directive.
        (rs6000_xcoff_encode_section_info): Add logic to append all
        storage mapping classes.
        (rs6000_asm_weaken_decl): Adjust for qualname symbols.
        * config/rs6000/xcoff.h (ASM_OUTPUT_ALIGNED_DECL_LOCAL): Use
        rs6000_xcoff_asm_output_aligned_decl_common.
        (ASM_OUTPUT_ALIGNED_DECL_LOCAL): Use
        rs6000_xcoff_asm_output_aligned_decl_common.
        (ASM_OUTPUT_TLS_COMMON): Use
        rs6000_xcoff_asm_output_aligned_decl_common.

2021-05-02  Jakub Jelinek  <jakub@redhat.com>

        PR target/100375
        * config/nvptx/nvptx.c (nvptx_sese_pseudo): Use nullptr instead of 0
        as first argument of pseudo_node_t constructors.

2021-05-02  Jakub Jelinek  <jakub@redhat.com>

        PR target/100336
        * config/i386/t-i386 (TM_H): Add $(srcdir)/config/i386/i386-isa.def.

2021-05-01  Aldy Hernandez  <aldyh@redhat.com>

        * value-range.cc (DEFINE_INT_RANGE_GC_STUBS): Remove.
        (gt_pch_nx (int_range<1> *&)): New.
        (gt_ggc_mx (int_range<1> *&)): New.
        * value-range.h (class irange): Add GTY support for
        the base class.

2021-05-01  Geng Qi  <gengqi@linux.alibaba.com>

        * doc/options.texi (Negative): Change either or to both and.

2021-04-30  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add
        float_ml[as][q]_laneq builtin generator macros.
        * config/aarch64/aarch64-simd.md (mul_laneq<mode>3): Define.
        (aarch64_float_mla_laneq<mode>): Define.
        (aarch64_float_mls_laneq<mode>): Define.
        * config/aarch64/arm_neon.h (vmla_laneq_f32): Use RTL builtin
        instead of GCC vector extensions.
        (vmlaq_laneq_f32): Likewise.
        (vmls_laneq_f32): Likewise.
        (vmlsq_laneq_f32): Likewise.

2021-04-30  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add
        float_ml[as]_lane builtin generator macros.
        * config/aarch64/aarch64-simd.md (*aarch64_mul3_elt<mode>):
        Rename to...
        (mul_lane<mode>3): This, and re-order arguments.
        (aarch64_float_mla_lane<mode>): Define.
        (aarch64_float_mls_lane<mode>): Define.
        * config/aarch64/arm_neon.h (vmla_lane_f32): Use RTL builtin
        instead of GCC vector extensions.
        (vmlaq_lane_f32): Likewise.
        (vmls_lane_f32): Likewise.
        (vmlsq_lane_f32): Likewise.

2021-04-30  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add float_ml[as]
        builtin generator macros.
        * config/aarch64/aarch64-simd.md (aarch64_float_mla<mode>):
        Define.
        (aarch64_float_mls<mode>): Define.
        * config/aarch64/arm_neon.h (vmla_f32): Use RTL builtin
        instead of relying on GCC vector extensions.
        (vmla_f64): Likewise.
        (vmlaq_f32): Likewise.
        (vmlaq_f64): Likewise.
        (vmls_f32): Likewise.
        (vmls_f64): Likewise.
        (vmlsq_f32): Likewise.
        (vmlsq_f64): Likewise.
        * config/aarch64/iterators.md: Define VDQF_DF mode iterator.

2021-04-30  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add
        float_ml[as]_n_builtin generator macros.
        * config/aarch64/aarch64-simd.md (*aarch64_mul3_elt_from_dup<mode>):
        Rename to...
        (mul_n<mode>3): This, and re-order arguments.
        (aarch64_float_mla_n<mode>): Define.
        (aarch64_float_mls_n<mode>): Define.
        * config/aarch64/arm_neon.h (vmla_n_f32): Use RTL builtin
        instead of inline asm.
        (vmlaq_n_f32): Likewise.
        (vmls_n_f32): Likewise.
        (vmlsq_n_f32): Likewise.

2021-04-30  Jonathan Wright  <joanthan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add pmull[2]
        builtin generator macros.
        * config/aarch64/aarch64-simd.md (aarch64_pmullv8qi): Define.
        (aarch64_pmull_hiv16qi_insn): Define.
        (aarch64_pmull_hiv16qi): Define.
        * config/aarch64/arm_neon.h (vmull_high_p8): Use RTL builtin
        instead of inline asm.
        (vmull_p8): Likewise.

2021-04-30  Senthil Kumar Selvaraj  <saaadhu@gcc.gnu.org>

        * config/avr/avr.md: Adjust peepholes to match and
        generate parallels with clobber of REG_CC.
        (mov<mode>_insn): Rename to mov<mode>_insn_split.
        (*mov<mode>_insn): Rename to mov<mode>_insn.

2021-04-30  David Edelsohn  <dje.gcc@gmail.com>

        * varasm.c (use_blocks_for_decl_p): Don't use section anchors
        for VAR_DECLs if -fdata-sections enabled.

2021-04-30  Michael Meissner  <meissner@linux.ibm.com>

        PR bootstrap/100327
        * config/rs6000/rs6000.c
        (TARGET_LIBGCC_FLOATING_MODE_SUPPORTED_P): Define.
        (rs6000_libgcc_floating_mode_supported_p): New target hook.

2021-04-30  Aldy Hernandez  <aldyh@redhat.com>

        * tree-ssa-threadbackward.c (class thread_jumps): Split out code
        from here...
        (class back_threader_registry): ...to here...
        (class back_threader_profitability): ...and here...
        (thread_jumps::thread_through_all_blocks): Remove argument.
        (back_threader_registry::back_threader_registry): New.
        (back_threader_registry::~back_threader_registry): New.
        (back_threader_registry::thread_through_all_blocks): New.
        (thread_jumps::profitable_jump_thread_path): Move from here...
        (back_threader_profitability::profitable_path_p): ...to here.
        (thread_jumps::find_taken_edge): New.
        (thread_jumps::convert_and_register_current_path): Move...
        (back_threader_registry::register_path): ...to here.
        (thread_jumps::register_jump_thread_path_if_profitable): Move...
        (thread_jumps::maybe_register_path): ...to here.
        (thread_jumps::handle_phi): Call find_taken_edge and
        maybe_register_path.
        (thread_jumps::handle_assignment): Same.
        (thread_jumps::fsm_find_control_statement_thread_paths): Remove
        tree argument to handle_phi and handle_assignment.
        (thread_jumps::find_jump_threads_backwards): Set m_name.  Remove
        set of m_speed_p and m_max_threaded_paths.
        (pass_thread_jumps::execute): Remove second argument from
        find_jump_threads_backwards.
        (pass_early_thread_jumps::execute): Same.

2021-04-30  Aldy Hernandez  <aldyh@redhat.com>

        * tree-ssa-dom.c (class dom_jump_threader_simplifier): New.
        (class dom_opt_dom_walker): Initialize some class variables.
        (pass_dominator::execute): Pass evrp_range_analyzer and
        dom_jump_threader_simplifier to dom_opt_dom_walker.
        Adjust for some functions moving into classes.
        (simplify_stmt_for_jump_threading): Adjust and move to...
        (jump_threader_simplifier::simplify): ...here.
        (dom_opt_dom_walker::before_dom_children): Adjust for
        m_evrp_range_analyzer.
        (dom_opt_dom_walker::after_dom_children): Remove x_vr_values hack.
        (test_for_singularity): Place in dom_opt_dom_walker class.
        (dom_opt_dom_walker::optimize_stmt): The argument
        evrp_range_analyzer is now a class field.
        * tree-ssa-threadbackward.c (class thread_jumps): Add m_registry.
        (thread_jumps::thread_through_all_blocks): New.
        (thread_jumps::convert_and_register_current_path): Use m_registry.
        (pass_thread_jumps::execute): Adjust for thread_through_all_blocks
        being in the threader class.
        (pass_early_thread_jumps::execute): Same.
        * tree-ssa-threadedge.c (threadedge_initialize_values): Move...
        (jump_threader::jump_threader): ...here.
        (threadedge_finalize_values): Move...
        (jump_threader::~jump_threader): ...here.
        (jump_threader::remove_jump_threads_including): New.
        (jump_threader::thread_through_all_blocks): New.
        (record_temporary_equivalences_from_phis): Move...
        (jump_threader::record_temporary_equivalences_from_phis): ...here.
        (record_temporary_equivalences_from_stmts_at_dest): Move...
        (jump_threader::record_temporary_equivalences_from_stmts_at_dest):
        Here...
        (simplify_control_stmt_condition_1): Move to jump_threader class.
        (simplify_control_stmt_condition): Move...
        (jump_threader::simplify_control_stmt_condition): ...here.
        (thread_around_empty_blocks): Move...
        (jump_threader::thread_around_empty_blocks): ...here.
        (thread_through_normal_block): Move...
        (jump_threader::thread_through_normal_block): ...here.
        (thread_across_edge): Move...
        (jump_threader::thread_across_edge): ...here.
        (thread_outgoing_edges): Move...
        (jump_threader::thread_outgoing_edges): ...here.
        * tree-ssa-threadedge.h: Move externally facing functings...
        (class jump_threader): ...here...
        (class jump_threader_simplifier): ...and here.
        * tree-ssa-threadupdate.c (struct redirection_data): Remove comment.
        (jump_thread_path_allocator::jump_thread_path_allocator): New.
        (jump_thread_path_allocator::~jump_thread_path_allocator): New.
        (jump_thread_path_allocator::allocate_thread_edge): New.
        (jump_thread_path_allocator::allocate_thread_path): New.
        (jump_thread_path_registry::jump_thread_path_registry): New.
        (jump_thread_path_registry::~jump_thread_path_registry): New.
        (jump_thread_path_registry::allocate_thread_edge): New.
        (jump_thread_path_registry::allocate_thread_path): New.
        (dump_jump_thread_path): Make extern.
        (debug (const vec<jump_thread_edge *> &path)): New.
        (struct removed_edges): Move to tree-ssa-threadupdate.h.
        (struct thread_stats_d): Remove.
        (remove_ctrl_stmt_and_useless_edges): Make static.
        (lookup_redirection_data): Move...
        (jump_thread_path_registry::lookup_redirection_data): ...here.
        (ssa_redirect_edges): Make static.
        (thread_block_1): Move...
        (jump_thread_path_registry::thread_block_1): ...here.
        (thread_block): Move...
        (jump_thread_path_registry::thread_block): ...here.
        (thread_through_loop_header):  Move...
        (jump_thread_path_registry::thread_through_loop_header): ...here.
        (mark_threaded_blocks): Move...
        (jump_thread_path_registry::mark_threaded_blocks): ...here.
        (debug_path): Move...
        (jump_thread_path_registry::debug_path): ...here.
        (debug_all_paths): Move...
        (jump_thread_path_registry::dump): ..here.
        (rewire_first_differing_edge): Move...
        (jump_thread_path_registry::rewire_first_differing_edge): ...here.
        (adjust_paths_after_duplication): Move...
        (jump_thread_path_registry::adjust_paths_after_duplication): ...here.
        (duplicate_thread_path): Move...
        (jump_thread_path_registry::duplicate_thread_path): ..here.
        (remove_jump_threads_including): Move...
        (jump_thread_path_registry::remove_jump_threads_including): ...here.
        (thread_through_all_blocks): Move to...
        (jump_thread_path_registry::thread_through_all_blocks): ...here.
        (delete_jump_thread_path): Remove.
        (register_jump_thread): Move...
        (jump_thread_path_registry::register_jump_thread): ...here.
        * tree-ssa-threadupdate.h: Move externally facing functions...
        (class jump_thread_path_allocator): ...here...
        (class jump_thread_path_registry): ...and here.
        (thread_through_all_blocks): Remove.
        (struct removed_edges): New.
        (register_jump_thread): Remove.
        (remove_jump_threads_including): Remove.
        (delete_jump_thread_path): Remove.
        (remove_ctrl_stmt_and_useless_edges): Remove.
        (free_dom_edge_info): New prototype.
        * tree-vrp.c: Remove x_vr_values hack.
        (class vrp_jump_threader_simplifier): New.
        (vrp_jump_threader_simplifier::simplify): New.
        (vrp_jump_threader::vrp_jump_threader): Adjust method signature.
        Remove m_dummy_cond.
        Instantiate m_simplifier and m_threader.
        (vrp_jump_threader::thread_through_all_blocks): New.
        (vrp_jump_threader::simplify_stmt): Remove.
        (vrp_jump_threader::after_dom_children): Do not set m_dummy_cond.
        Remove x_vr_values hack.
        (execute_vrp): Adjust for thread_through_all_blocks being in a
        class.

2021-04-30  Christophe Lyon  <christophe.lyon@linaro.org>

        * genflags.c (gen_insn): Print failed expansion string.

2021-04-30  H.J. Lu  <hjl.tools@gmail.com>

        * expr.c (alignment_for_piecewise_move): Call mode_for_size
        without limit to MAX_FIXED_MODE_SIZE.

2021-04-30  H.J. Lu  <hjl.tools@gmail.com>

        PR middle-end/90773
        * builtins.c (builtin_memset_gen_str): Don't use return from
        simplify_gen_subreg.

2021-04-30  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/98060
        * config/i386/i386.md (*add<mode>3_carry_0r): New insn pattern.
        (*addsi3_carry_zext_0r): Ditto.
        (*sub<mode>3_carry_0): Ditto.
        (*subsi3_carry_zext_0r): Ditto.
        * config/i386/predicates.md (ix86_carry_flag_unset_operator):
        New predicate.
        * config/i386/i386.c (ix86_rtx_costs) <case PLUS, case MINUS>:
        Also consider ix86_carry_flag_unset_operator to calculate
        the cost of adc/sbb insn.

2021-04-30  Roman Zhuykov  <zhroma@ispras.ru>

        PR rtl-optimization/100225
        PR rtl-optimization/84878
        * modulo-sched.c (sms_schedule): Use note_stores to skip loops
        where we have an instruction which touches (writes) any hard
        register from df->regular_block_artificial_uses set.
        Allow not-single-set instruction only right before basic block
        tail.

2021-04-30  Geng Qi  <gengqi@linux.alibaba.com>

        * config/riscv/riscv.opt (march=,mabi=): Negative itself.

2021-04-30  LevyHsu  <admin@levyhsu.com>

        * config/riscv/riscv.c (riscv_min_arithmetic_precision): New.
        * config/riscv/riscv.h (TARGET_MIN_ARITHMETIC_PRECISION): New.
        * config/riscv/riscv.md (addv<mode>4, uaddv<mode>4): New.
        (subv<mode>4, usubv<mode>4, mulv<mode>4, umulv<mode>4): New.

2021-04-29  Alexandre Oliva  <oliva@adacore.com>

        * config.gcc: Merged x86 and x86_64 cpu_type-setting cases.

2021-04-29  Alexandre Oliva  <oliva@adacore.com>

        * config/i386/i386.h (ASM_OUTPUT_MAX_SKIP_PAD): Rename to...
        (ASM_OUTPUT_MAX_SKIP_ALIGN): ... this.  Enclose in do/while(0).
        * config/i386/i386.c: Adjust.
        * config/i386/i386.md: Adjust.
        * config/i386/darwin.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Drop.
        * config/i386/dragonfly.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise.
        * config/i386/freebsd.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise.
        * config/i386/gas.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise.
        * config/i386/gnu-user.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise.
        * config/i386/iamcu.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise.
        * config/i386/lynx.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise.
        * config/i386/netbsd-elf.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise.
        * config/i386/openbsdelf.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise.
        * config/i386/x86-64.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise.
        (ASM_OUTPUT_MAX_SKIP_PAD): Likewise.

2021-04-29  Uroš Bizjak  <ubizjak@gmail.com>

        * config/i386/i386-expand.c (ix86_expand_int_compare):
        Swap operands of GTU and LEU comparison to emit carry flag comparison.
        * config/i386/i386.md (*add<mode>3_carry_0): Change insn
        predicate to allow more combine opportunities with memory operands.
        (*sub<mode>3_carry_0): Ditto.

2021-04-29  Richard Sandiford  <richard.sandiford@arm.com>

        PR rtl-optimization/100303
        * rtl-ssa/accesses.cc (function_info::make_use_available): Take a
        boolean that indicates whether the use will only be used in
        debug instructions.  Treat it in the same way that existing
        cross-EBB debug references would be handled if so.
        (function_info::make_uses_available): Likewise.
        * rtl-ssa/functions.h (function_info::make_uses_available): Update
        prototype accordingly.
        (function_info::make_uses_available): Likewise.
        * fwprop.c (try_fwprop_subst): Update call accordingly.

2021-04-29  Jeff Law  <jlaw@tachyum.com>

        * config/nios2/nios2-protos.h (nios2_fpu_insn_enabled): Move outside
        of RTX_CODE guard.

2021-04-29  Uroš Bizjak  <ubizjak@gmail.com>
            Richard Biener  <rguenther@suse.de>

        PR target/100312
        * config/i386/i386-builtin.def (IX86_BUILTIN_MASKLOADPD)
        (IX86_BUILTIN_MASKLOADPS, IX86_BUILTIN_MASKLOADPD256)
        (IX86_BUILTIN_MASKLOADPS256, IX86_BUILTIN_MASKLOADD)
        (IX86_BUILTIN_MASKLOADQ, IX86_BUILTIN_MASKLOADD256)
        (IX86_BUILTIN_MASKLOADQ256): Move from SPECIAL_ARGS
        to PURE_ARGS category.
        * config/i386/i386-builtins.c (ix86_init_mmx_sse_builtins):
        Handle PURE_ARGS category.
        * config/i386/i386-expand.c (ix86_expand_builtin): Ditto.

2021-04-29  Eric Botcazou  <ebotcazou@adacore.com>

        * configure.ac: Check for the presence of sys/locking.h header and
        for whether _LK_LOCK is supported by _locking.
        * configure: Regenerate.
        * config.in: Likewise.
        * gcov-io.h: Define GCOV_LOCKED_WITH_LOCKING if HOST_HAS_LK_LOCK.
        * gcov-io.c (gcov_open): Add support for GCOV_LOCKED_WITH_LOCKING.
        * system.h: Include <sys/locking.h> if HAVE_SYS_LOCKING_H.

2021-04-29  Uroš Bizjak  <ubizjak@gmail.com>

        * config/i386/predicates.md (fcmov_comparison_operator):
        Do not check for trivial FP comparison operator.
        <case GEU, case LTU>: Allow CCGZmode.
        <case GTU, case LEU>: Do not allow CCCmode.
        (ix86_comparison_operator) <case GTU, case LEU>: Allow only CCmode.
        (ix86_carry_flag_operator): Match only LTU and UNLT code.
        Do not check for trivial FP comparison operator.  Allow CCGZmode.

2021-04-29  Tom de Vries  <tdevries@suse.de>

        * omp-expand.c (expand_omp_simd): Add step_orig, and replace uses of
        fd->loop.step by either step or orig_step.

2021-04-29  Eric Botcazou  <ebotcazou@adacore.com>

        * config/sparc/sparc.c (gen_load_pcrel_sym): Delete.
        (load_got_register): Do the PIC dance here.
        (sparc_legitimize_tls_address): Simplify.
        (sparc_emit_probe_stack_range): Likewise.
        (sparc32_initialize_trampoline): Likewise.
        (sparc64_initialize_trampoline): Likewise.
        * config/sparc/sparc.md (load_pcrel_sym<P:mode>): Add @ marker.
        (probe_stack_range<P:mode>): Likewise.
        (flush<P:mode>): Likewise.
        (tgd_hi22<P:mode>): Likewise.
        (tgd_lo10<P:mode>): Likewise.
        (tgd_add<P:mode>): Likewise.
        (tgd_call<P:mode>): Likewise.
        (tldm_hi22<P:mode>): Likewise.
        (tldm_lo10<P:mode>): Likewise.
        (tldm_add<P:mode>): Likewise.
        (tldm_call<P:mode>): Likewise.
        (tldo_hix22<P:mode>): Likewise.
        (tldo_lox10<P:mode>): Likewise.
        (tldo_add<P:mode>): Likewise.
        (tie_hi22<P:mode>): Likewise.
        (tie_lo10<P:mode>): Likewise.
        (tie_add<P:mode>): Likewise.
        (tle_hix22<P:mode>): Likewise.
        (tle_lox10<P:mode>): Likewise.
        (stack_protect_setsi): Rename to...
        (stack_protect_set32): ...this.
        (stack_protect_setdi): Rename to...
        (stack_protect_set64): ...this.
        (stack_protect_set): Adjust calls to above.
        (stack_protect_testsi): Rename to...
        (stack_protect_test32): ...this.
        (stack_protect_testdi): Rename to...
        (stack_protect_test64): ...this.
        (stack_protect_test): Adjust calls to above.

2021-04-29  H.J. Lu  <hjl.tools@gmail.com>

        PR middle-end/90773
        * builtins.c (builtin_memcpy_read_str): Add a dummy argument.
        (builtin_strncpy_read_str): Likewise.
        (builtin_memset_read_str): Add an argument for the previous RTL
        information and generate the new RTL from the previous RTL info.
        (builtin_memset_gen_str): Likewise.
        * builtins.h (builtin_strncpy_read_str): Update the prototype.
        (builtin_memset_read_str): Likewise.
        * expr.c (by_pieces_ninsns): If targetm.overlap_op_by_pieces_p()
        returns true, round up size and alignment to the widest integer
        mode for maximum size.
        (pieces_addr::adjust): Add a pointer to by_pieces_prev argument
        and pass it to m_constfn.
        (op_by_pieces_d): Add m_push and m_overlap_op_by_pieces.
        (op_by_pieces_d::op_by_pieces_d): Add a bool argument to
        initialize m_push.  Initialize m_overlap_op_by_pieces with
        targetm.overlap_op_by_pieces_p ().
        (op_by_pieces_d::run): Pass the previous RTL information to
        pieces_addr::adjust and generate overlapping operations if
        m_overlap_op_by_pieces is true.
        (PUSHG_P): New.
        (move_by_pieces_d::move_by_pieces_d): Updated for op_by_pieces_d
        change.
        (store_by_pieces_d::store_by_pieces_d): Updated for op_by_pieces_d
        change.
        (can_store_by_pieces): Use by_pieces_constfn on constfun.
        (store_by_pieces): Use by_pieces_constfn on constfun.  Updated
        for op_by_pieces_d change.
        (clear_by_pieces_1): Add a dummy argument.
        (clear_by_pieces): Updated for op_by_pieces_d change.
        (compare_by_pieces_d::compare_by_pieces_d): Likewise.
        (string_cst_read_str): Add a dummy argument.
        * expr.h (by_pieces_constfn): Add a dummy argument.
        (by_pieces_prev): New.
        * target.def (overlap_op_by_pieces_p): New target hook.
        * config/i386/i386.c (TARGET_OVERLAP_OP_BY_PIECES_P): New.
        * doc/tm.texi.in: Add TARGET_OVERLAP_OP_BY_PIECES_P.
        * doc/tm.texi: Regenerated.

2021-04-29  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/100253
        * tree-vect-stmts.c (vectorizable_load): Do not assume
        element alignment when DR_MISALIGNMENT is -1.
        (vectorizable_store): Likewise.

2021-04-29  Jakub Jelinek  <jakub@redhat.com>

        PR target/100302
        * config/aarch64/aarch64.c (aarch64_add_offset_1_temporaries): Use
        absu_hwi instead of abs_hwi.

2021-04-29  Richard Biener  <rguenther@suse.de>

        PR middle-end/38474
        * tree-ssa-structalias.c (add_graph_edge): Avoid direct
        forwarding when indirect forwarding through ESCAPED
        alread happens.

2021-04-29  Tom de Vries  <tdevries@suse.de>

        PR target/100232
        * internal-fn.c (expand_GOMP_SIMT_ENTER_ALLOC)
        (expand_GOMP_SIMT_LAST_LANE, expand_GOMP_SIMT_ORDERED_PRED)
        (expand_GOMP_SIMT_VOTE_ANY, expand_GOMP_SIMT_XCHG_BFLY)
        (expand_GOMP_SIMT_XCHG_IDX): Ensure target is assigned to.

2021-04-29  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/99912
        * tree-ssa-dse.c (dse_dom_walker::m_need_cfg_cleanup): New.
        (dse_dom_walker::todo): Likewise.
        (dse_dom_walker::dse_optimize_stmt): Move VDEF check to the
        caller.
        (dse_dom_walker::before_dom_children): Remove trivially
        dead SSA defs and schedule CFG cleanup if we removed all
        PHIs in a block.
        (pass_dse::execute): Get TODO as computed by the DOM walker
        and return it.  Wipe dominator info earlier.

2021-04-29  Richard Biener  <rguenther@suse.de>

        PR ipa/100308
        * ipa-prop.c (ipcp_modif_dom_walker::before_dom_children):
        Track blocks to cleanup EH in new m_need_eh_cleanup.
        (ipcp_modif_dom_walker::cleanup_eh): New.
        (ipcp_transform_function): Release dominator info before
        doing EH cleanup.

2021-04-29  Martin Sebor  <msebor@redhat.com>

        PR middle-end/100250
        * attribs.c (attr_access::array_as_string): Avoid dereferencing
        a pointer when it's null.

2021-04-29  Martin Sebor  <msebor@redhat.com>

        * Makefile.in (OBJS): Add ipa-free-lang-data.o.
        * ipa-free-lang-data.cc: New file.
        * tree.c: Move pass free_lang_data to file above.
         (build_array_type_1): Declare extern.
        * tree.h (build_array_type_1): Declare.

2021-04-28  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Modify comment to
        make consistent with updated RTL pattern.
        * config/aarch64/aarch64-simd.md (aarch64_<sur>qmovn<mode>):
        Implement using ss_truncate and us_truncate rather than
        unspecs.
        * config/aarch64/iterators.md: Remove redundant unspecs and
        iterator: UNSPEC_[SU]QXTN and SUQMOVN respectively.

2021-04-28  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/arm_acle.h (__attribute__): Make intrinsic
        attributes consistent with those defined in arm_neon.h.

2021-04-28  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/arm_fp16.h (__attribute__): Make intrinsic
        attributes consistent with those defined in arm_neon.h.

2021-04-28  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add
        float_trunc_rodd builtin generator macros.
        * config/aarch64/aarch64-simd.md (aarch64_float_trunc_rodd_df):
        Define.
        (aarch64_float_trunc_rodd_lo_v2sf): Define.
        (aarch64_float_trunc_rodd_hi_v4sf_le): Define.
        (aarch64_float_trunc_rodd_hi_v4sf_be): Define.
        (aarch64_float_trunc_rodd_hi_v4sf): Define.
        * config/aarch64/arm_neon.h (vcvtx_f32_f64): Use RTL builtin
        instead of inline asm.
        (vcvtx_high_f32_f64): Likewise.
        (vcvtxd_f32_f64): Likewise.
        * config/aarch64/iterators.md: Add FCVTXN unspec.

2021-04-28  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add tbx1 builtin
        generator macros.
        * config/aarch64/aarch64-simd.md (aarch64_tbx1<mode>):
        Define.
        * config/aarch64/arm_neon.h (vqtbx1_s8): USE RTL builtin
        instead of inline asm.
        (vqtbx1_u8): Likewise.
        (vqtbx1_p8): Likewise.
        (vqtbx1q_s8): Likewise.
        (vqtbx1q_u8): Likewise.
        (vqtbx1q_p8): Likewise.
        (vtbx2_s8): Likewise.
        (vtbx2_u8): Likewise.
        (vtbx2_p8): Likewise.

2021-04-28  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add tbl1 builtin
        generator macros.
        * config/aarch64/arm_neon.h (vqtbl1_p8): Use RTL builtin
        instead of inline asm.
        (vqtbl1_s8): Likewise.
        (vqtbl1_u8): Likewise.
        (vqtbl1q_p8): Likewise.
        (vqtbl1q_s8): Likewise.
        (vqtbl1q_u8): Likewise.
        (vtbl1_s8): Likewise.
        (vtbl1_u8): Likewise.
        (vtbl1_p8): Likewise.
        (vtbl2_s8): Likewise.
        (vtbl2_u8): Likewise.
        (vtbl2_p8): Likewise.

2021-04-28  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add polynomial
        ssri_n buitin generator macro.
        * config/aarch64/arm_neon.h (vsri_n_p8): Use RTL builtin
        instead of inline asm.
        (vsri_n_p16): Likewise.
        (vsri_n_p64): Likewise.
        (vsriq_n_p8): Likewise.
        (vsriq_n_p16): Likewise.
        (vsriq_n_p64): Likewise.

2021-04-28  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Use VALLP mode
        iterator for polynomial ssli_n builtin generator macro.
        * config/aarch64/arm_neon.h (vsli_n_p8): Use RTL builtin
        instead of inline asm.
        (vsli_n_p16): Likewise.
        (vsliq_n_p8): Likewise.
        (vsliq_n_p16): Likewise.
        * config/aarch64/iterators.md: Define VALLP mode iterator.

2021-04-28  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Use VDQV_L
        iterator to generate [su]adalp RTL builtins.
        * config/aarch64/aarch64-simd.md: Use VDQV_L iterator in
        [su]adalp RTL pattern.
        * config/aarch64/arm_neon.h (vpadal_s32): Use RTL builtin
        instead of inline asm.
        (vpadal_u32): Likewise.

2021-04-28  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add [su]addlp
        builtin generator macros.
        * config/aarch64/aarch64-simd.md (aarch64_<su>addlp<mode>):
        Define.
        * config/aarch64/arm_neon.h (vpaddl_s8): Use RTL builtin
        instead of inline asm.
        (vpaddl_s16): Likewise.
        (vpaddl_s32): Likewise.
        (vpaddl_u8): Likewise.
        (vpaddl_u16): Likewise.
        (vpaddl_u32): Likewise.
        (vpaddlq_s8): Likewise.
        (vpaddlq_s16): Likewise.
        (vpaddlq_s32): Likewise.
        (vpaddlq_u8): Likewise.
        (vpaddlq_u16): Likewise.
        (vpaddlq_u32): Liwewise.
        * config/aarch64/iterators.md: Define [SU]ADDLP unspecs with
        appropriate attributes.

2021-04-28  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Use VDQ_I iterator
        for aarch64_addp<mode> builtin macro generator.
        * config/aarch64/aarch64-simd.md: Use VDQ_I iterator in
        aarch64_addp<mode> RTL pattern.
        * config/aarch64/arm_neon.h (vpaddq_s8): Use RTL builtin
        instead of inline asm.
        (vpaddq_s16): Likewise.
        (vpaddq_s32): Likewise.
        (vpaddq_s64): Likewise.
        (vpaddq_u8): Likewise.
        (vpaddq_u16): Likewise.
        (vpaddq_u32): Likewise.
        (vpaddq_u64): Likewise.

2021-04-28  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add sq[r]dmulh_n
        builtin generator macros.
        * config/aarch64/aarch64-simd.md (aarch64_sq<r>dmulh_n<mode>):
        Define.
        * config/aarch64/arm_neon.h (vqdmulh_n_s16): Use RTL builtin
        instead of inline asm.
        (vqdmulh_n_s32): Likewise.
        (vqdmulhq_n_s16): Likewise.
        (vqdmulhq_n_s32): Likewise.
        (vqrdmulh_n_s16): Likewise.
        (vqrdmulh_n_s32): Likewise.
        (vqrdmulhq_n_s16): Likewise.
        (vqrdmulhq_n_s32): Likewise.

2021-04-28  Tobias Burnus  <tobias@codesourcery.com>

        * doc/install.texi (--enable-offload-defaulted): Document.

2021-04-28  Senthil Kumar Selvaraj  <saaadhu@gcc.gnu.org>

        * config/avr/avr-dimode.md: Turn existing patterns into
        define_insn_and_split style patterns where the splitter
        adds a clobber of the condition code register.  Drop "cc"
        attribute.  Add new patterns to match output of
        the splitters.
        * config/avr/avr-fixed.md: Likewise.
        * config/avr/avr.c (cc_reg_rtx): New.
        (avr_parallel_insn_from_insns): Adjust insn count
        for removal of set of cc0.
        (avr_is_casesi_sequence): Likewise.
        (avr_casei_sequence_check_operands): Likewise.
        (avr_optimize_casesi): Likewise. Also insert
        new insns after jump_insn.
        (avr_pass_casesi::avr_rest_of_handle_casesi): Adjust
        for removal of set of cc0.
        (avr_init_expanders): Initialize cc_reg_rtx.
        (avr_regno_reg_class): Handle REG_CC.
        (cond_string): Remove usage of CC_OVERFLOW_UNUSABLE.
        (avr_notice_update_cc): Remove function.
        (ret_cond_branch): Remove usage of CC_OVERFLOW_UNUSABLE.
        (compare_condition): Adjust for PARALLEL with
        REG_CC clobber.
        (out_shift_with_cnt): Likewise.
        (ashlhi3_out): Likewise.
        (ashrhi3_out): Likewise.
        (lshrhi3_out): Likewise.
        (avr_class_max_nregs): Return single reg for REG_CC.
        (avr_compare_pattern): Check for REG_CC instead
        of cc0_rtx.
        (avr_reorg_remove_redundant_compare): Likewise.
        (avr_reorg):Adjust for PARALLEL with REG_CC clobber.
        (avr_hard_regno_nregs): Return single reg for REG_CC.
        (avr_hard_regno_mode_ok): Allow only CCmode for REG_CC.
        (avr_md_asm_adjust): Clobber REG_CC.
        (TARGET_HARD_REGNO_NREGS): Define.
        (TARGET_CLASS_MAX_NREGS): Define.
        (TARGET_MD_ASM_ADJUST): Define.
        * config/avr/avr.h (FIRST_PSEUDO_REGISTER): Adjust
        for REG_CC.
        (enum reg_class): Add CC_REG class.
        (NOTICE_UPDATE_CC): Remove.
        (CC_OVERFLOW_UNUSABLE): Remove.
        (CC_NO_CARRY): Remove.
        * config/avr/avr.md: Turn existing patterns into
        define_insn_and_split style patterns where the splitter
        adds a clobber of the condition code register.  Drop "cc"
        attribute.  Add new patterns to match output of
        the splitters.
        (sez): Remove unused pattern.

2021-04-28  Richard Earnshaw  <rearnsha@arm.com>

        PR target/100311
        * config/arm/arm.c (arm_hard_regno_mode_ok): Only allow VPR to be
        used in HImode.

2021-04-28  Richard Sandiford  <richard.sandiford@arm.com>

        PR target/100305
        * config/aarch64/constraints.md (Utq): Require the address to
        be valid for both the element mode and for V2DImode.

2021-04-28  Jakub Jelinek  <jakub@redhat.com>
            Tobias Burnus  <tobias@codesourcery.com>

        * configure.ac (OFFLOAD_DEFAULTED): AC_DEFINE if offload-defaulted.
        * gcc.c (process_command): New variable.
        (driver::maybe_putenv_OFFLOAD_TARGETS): If OFFLOAD_DEFAULTED,
        set it if -foffload is defaulted.
        * lto-wrapper.c (OFFLOAD_TARGET_DEFAULT_ENV): Define.
        (compile_offload_image): If OFFLOAD_DEFAULTED and
        OFFLOAD_TARGET_DEFAULT is in the environment, don't fail
        if corresponding mkoffload can't be found.
        (compile_images_for_offload_targets): Likewise.  Free and clear
        offload_names if no valid offload is found.
        * config.in: Regenerate.
        * configure: Regenerate.

2021-04-28  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/100292
        * tree-vect-generic.c (expand_vector_condition): Do not fold
        the comparisons.

2021-04-27  David Edelsohn  <dje.gcc@gmail.com>

        * config/rs6000/aix.h (SUBTARGET_DRIVER_SELF_SPECS): New.
        * config/rs6000/aix64.opt (m64): New.
        (m32): New.

2021-04-27  Maciej W. Rozycki  <macro@orcam.me.uk>

        * config/vax/vax.c (print_operand_address, vax_address_cost_1)
        (index_term_p): Handle ASHIFT too.

2021-04-27  Maciej W. Rozycki  <macro@orcam.me.uk>

        * config/vax/builtins.md (jbb<ccss>i<mode>): Remove operand #3.
        (sync_lock_test_and_set<mode>): Adjust accordingly.
        (sync_lock_release<mode>): Likewise.

2021-04-27  Maciej W. Rozycki  <macro@orcam.me.uk>

        * config/vax/vax-protos.h (adjacent_operands_p): Remove
        prototype.
        * config/vax/vax.c (adjacent_operands_p): Remove.

2021-04-27  Maciej W. Rozycki  <macro@linux-mips.org>

        * ifcvt.c (dead_or_predicable) [!IFCVT_MODIFY_TESTS]: Fall
        through to the non-conditional execution case if getting the
        condition for conditional execution has failed.

2021-04-27  Richard Sandiford  <richard.sandiford@arm.com>

        PR middle-end/100284
        * gimple.c (gimple_could_trap_p_1): Remove VEC_COND_EXPR test.
        * tree-eh.c (operation_could_trap_p): Handle VEC_COND_EXPR rather
        than asserting on it.

2021-04-27  David Edelsohn  <dje.gcc@gmail.com>

        * config/rs6000/rs6000.c (rs6000_aix_precompute_tls_p): Protect
        with TARGET_AIX_OS.

2021-04-27  David Edelsohn  <dje.gcc@gmail.com>

        PR target/94177
        * calls.c (precompute_register_parameters): Additionally test
        targetm.precompute_tls_p to pre-compute argument.
        * config/rs6000/aix.h (TARGET_PRECOMPUTE_TLS_P): Define.
        * config/rs6000/rs6000.c (rs6000_aix_precompute_tls_p): New.
        * target.def (precompute_tls_p): New.
        * doc/tm.texi.in (TARGET_PRECOMPUTE_TLS_P): Add hook documentation.
        * doc/tm.texi: Regenerated.

2021-04-27  Jakub Jelinek  <jakub@redhat.com>

        PR target/100200
        * config/aarch64/aarch64.c (aarch64_print_operand): Cast -UINTVAL
        back to HOST_WIDE_INT.

2021-04-27  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        PR target/100106
        * simplify-rtx.c (simplify_context::simplify_subreg): Check the
        memory alignment for the outer mode.

2021-04-27  H.J. Lu  <hjl.tools@gmail.com>

        PR middle-end/90773
        * expr.c (op_by_pieces_d::get_usable_mode): New member function.
        (op_by_pieces_d::run): Cange a while loop to a do-while loop.

2021-04-27  Alex Coplan  <alex.coplan@arm.com>

        PR target/99977
        * config/arm/arm.c (arm_split_compare_and_swap): Fix up codegen
        with negative immediates: ensure we expand cbranchsi4_scratch
        correctly and ensure we satisfy its constraints.
        * config/arm/sync.md
        (@atomic_compare_and_swap<CCSI:arch><NARROW:mode>_1): Don't
        attempt to tie two output operands together with constraints;
        collapse two alternatives.
        (@atomic_compare_and_swap<CCSI:arch><SIDI:mode>_1): Likewise.
        * config/arm/thumb1.md (cbranchsi4_neg_late): New.

2021-04-27  Jakub Jelinek  <jakub@redhat.com>

        PR target/100200
        * config/aarch64/predicates.md (aarch64_sub_immediate,
        aarch64_plus_immediate): Use -UINTVAL instead of -INTVAL.
        * config/aarch64/aarch64.md (casesi, rotl<mode>3): Likewise.
        * config/aarch64/aarch64.c (aarch64_print_operand,
        aarch64_split_atomic_op, aarch64_expand_subvti): Likewise.

2021-04-27  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/100239
        * tree-vect-generic.c (lower_vec_perm): Don't accept constant
        permutations with all indices from the first zero element as vec_shl.

2021-04-27  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/100254
        * cfgcleanup.c (outgoing_edges_match): Check REG_EH_REGION on
        last1 and last2 insns rather than BB_END (bb1) and BB_END (bb2) insns.

2021-04-27  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/99912
        * passes.def: Add comment about new TODO_remove_unused_locals.
        * tree-stdarg.c (pass_data_stdarg): Run TODO_remove_unused_locals
        at start.

2021-04-27  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/99912
        * passes.def (pass_all_optimizations): Add pass_dse before
        the first pass_dce, move the first pass_dse before the
        pass_dce following pass_pre.

2021-04-27  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/95527
        * generic-match-head.c: Include tm.h.
        * gimple-match-head.c: Include tm.h.
        * match.pd (CLZ == INTEGER_CST): Don't use
        #ifdef CLZ_DEFINED_VALUE_AT_ZERO, only test CLZ_DEFINED_VALUE_AT_ZERO
        if clz == CFN_CLZ.  Add missing val declaration.
        (CTZ cmp CST): New simplifications.

2021-04-27  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/96696
        * expr.c (expand_expr_divmod): New function.
        (expand_expr_real_2) <case TRUNC_DIV_EXPR>: Use it for truncations and
        divisions.  Formatting fixes.
        <case MULT_EXPR>: Optimize x / y * y as x - x % y if the latter is
        cheaper.

2021-04-27  Martin Jambor  <mjambor@suse.cz>

        PR ipa/99951
        * ipa-param-manipulation.c (ipa_param_adjustments::modify_call):
        If removing a call statement LHS SSA name, release it.

2021-04-27  Richard Earnshaw  <rearnsha@arm.com>

        PR target/100236
        * config/arm/arm.c (THUMB2_WORK_REGS): Check PIC_OFFSET_TABLE_REGNUM
        is valid before including it in the mask.

2021-04-27  Richard Sandiford  <richard.sandiford@arm.com>

        PR target/100270
        * config/aarch64/aarch64.c (aarch64_comp_type_attributes): Handle
        SVE attributes.

2021-04-27  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/100051
        * tree-ssa-alias.c (indirect_ref_may_alias_decl_p): Add
        disambiguator based on access size vs. decl size.

2021-04-27  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/100278
        * tree-ssa-pre.c (compute_avail): Give up when we cannot
        adjust TBAA beacuse of mismatching bases.

2021-04-27  Jakub Jelinek  <jakub@redhat.com>

        PR target/99405
        * config/i386/i386.md (*<insn><mode>3_mask, *<insn><mode>3_mask_1):
        For any_rotate define_insn_split and following splitters, use
        SWI iterator instead of SWI48.

2021-04-27  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/99776
        * match.pd (bit_field_ref (ctor)): Relax element extract
        type compatibility checks.

2021-04-27  Cui,Lili  <lili.cui@intel.com>

        * common/config/i386/i386-common.c (processor_names):
        Sync processor_names with processor_type.
        * config/i386/i386-options.c (processor_cost_table):
        Sync processor_cost_table with processor_type.

2021-04-26  Aldy Hernandez  <aldyh@redhat.com>

        * value-range.cc (irange::irange_set_1bit_anti_range): Add assert.
        (irange::set): Call irange_set_1bit_anti_range for handling all
        1-bit ranges.  Fall through on ~[MIN,MAX].

2021-04-26  Aldy Hernandez  <aldyh@redhat.com>

        * value-range.cc (irange::legacy_num_pairs): Remove.
        (irange::invert): Change gcc_assert to gcc_checking_assert.
        * value-range.h (irange::num_pairs): Adjust for a cached
        num_pairs().  Also, rename all gcc_assert's to
        gcc_checking_assert's.

2021-04-26  Aldy Hernandez  <aldyh@redhat.com>

        * value-range.cc (irange::operator=): Set m_kind.
        (irange::copy_to_legacy): Handle varying and undefined sources
        as a legacy copy since they can be easily copied.
        (irange::irange_set): Set m_kind.
        (irange::irange_set_anti_range): Same.
        (irange::set): Rename normalize_min_max to normalize_kind.
        (irange::verify_range): Adjust for multi-ranges having the
        m_kind field set.
        (irange::irange_union): Set m_kind.
        (irange::irange_intersect): Same.
        (irange::invert): Same.
        * value-range.h (irange::kind): Always return m_kind.
        (irange::varying_p): Rename to...
        (irange::varying_comptaible_p): ...this.
        (irange::undefined_p): Only look at m_kind.
        (irange::irange): Always set VR_UNDEFINED if applicable.
        (irange::set_undefined): Always set VR_UNDEFINED.
        (irange::set_varying): Always set m_kind to VR_VARYING.
        (irange::normalize_min_max): Rename to...
        (irange::normalize_kind): ...this.

2021-04-26  Aldy Hernandez  <aldyh@redhat.com>

        * gimple-ssa-evrp-analyze.c (evrp_range_analyzer::set_ssa_range_info):
        Adjust for constant_p including varying_p.
        * tree-vrp.c (vrp_prop::finalize): Same.
        (determine_value_range): Same.
        * vr-values.c (vr_values::range_of_expr): Same.
        * value-range.cc (irange::symbolic_p): Do not check varying_p.
        (irange::constant_p): Same.

2021-04-26  Aldy Hernandez  <aldyh@redhat.com>

        * value-range.cc (irange::legacy_lower_bound): Replace
          !undefined_p check with num_ranges > 0.
        (irange::legacy_upper_bound): Same.
        * value-range.h (irange::type): Same.
        (irange::lower_bound): Same.
        (irange::upper_bound): Same.

2021-04-26  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/99956
        * gimple-loop-interchange.cc (compute_access_stride):
        Try instantiating the access in a shallower loop nest
        if instantiating failed.
        (compute_access_strides): Pass adjustable loop_nest
        to compute_access_stride.

2021-04-26  Christophe Lyon  <christophe.lyon@linaro.org>

        * doc/sourcebuild.texi (arm_cmse_hw): Document.

2021-04-26  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/iterators.md (vwcore): Handle V4BF, V8BF.

2021-04-26  Thomas Schwinge  <thomas@codesourcery.com>
            Nathan Sidwell  <nathan@codesourcery.com>
            Tom de Vries  <vries@codesourcery.com>
            Julian Brown  <julian@codesourcery.com>
            Kwok Cheung Yeung  <kcy@codesourcery.com>

        * omp-offload.c (oacc_validate_dims): Implement
        '-Wopenacc-parallelism'.
        * doc/invoke.texi (-Wopenacc-parallelism): Document.

2021-04-26  Richard Biener  <rguenther@suse.de>

        * tree-cfg.h (gimplify_build1): Remove.
        (gimplify_build2): Likewise.
        (gimplify_build3): Likewise.
        * tree-cfg.c (gimplify_build1): Move to tree-vect-generic.c.
        (gimplify_build2): Likewise.
        (gimplify_build3): Likewise.
        * tree-vect-generic.c (gimplify_build1): Move from tree-cfg.c.
        Modernize.
        (gimplify_build2): Likewise.
        (gimplify_build3): Likewise.
        (tree_vec_extract): Use resimplify with following SSA edges.
        (expand_vector_parallel): Avoid passing NULL size/bitpos
        to tree_vec_extract.
        * expr.c (store_constructor): Deal with zero-element CTORs.
        * match.pd (bit_field_ref <vector CTOR>): Make sure to
        produce vector constants when possible.

2021-04-26  Richard Biener  <rguenther@suse.de>

        * tree-complex.c: Include gimple-fold.h.
        (expand_complex_addition): Use gimple_build.
        (expand_complex_multiplication_components): Likewise.
        (expand_complex_multiplication): Likewise.
        (expand_complex_div_straight): Likewise.
        (expand_complex_div_wide): Likewise.
        (expand_complex_division): Likewise.
        (expand_complex_conjugate): Likewise.
        (expand_complex_comparison): Likewise.

2021-04-26  Richard Biener  <rguenther@suse.de>

        * tree-ssa-phiopt.c (two_value_replacement): Remove use
        of legacy gimplify_buildN API.

2021-04-26  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/99473
        * tree-ssa-phiopt.c (cond_store_replacement): Handle all
        stores.

2021-04-26  Richard Biener  <rguenther@suse.de>

        * config/rs6000/rs6000-call.c (rs6000_gimple_fold_builtin):
        Use replace_call_with_value.

2021-04-26  Richard Biener  <rguenther@suse.de>

        * tree-ssa-propagate.h (valid_gimple_rhs_p): Remove.
        (update_gimple_call): Likewise.
        (update_call_from_tree): Likewise.
        * tree-ssa-propagate.c (valid_gimple_rhs_p): Remove.
        (valid_gimple_call_p): Likewise.
        (move_ssa_defining_stmt_for_defs): Likewise.
        (finish_update_gimple_call): Likewise.
        (update_gimple_call): Likewise.
        (update_call_from_tree): Likewise.
        (propagate_tree_value_into_stmt): Use replace_call_with_value.
        * gimple-fold.h (update_gimple_call): Declare.
        * gimple-fold.c (valid_gimple_rhs_p): Move here from
        tree-ssa-propagate.c.
        (update_gimple_call): Likewise.
        (valid_gimple_call_p): Likewise.
        (finish_update_gimple_call): Likewise, and simplify.
        (gimplify_and_update_call_from_tree): Implement
        update_call_from_tree functionality, avoid excessive
        push/pop_gimplify_context.
        (gimple_fold_builtin): Use only gimplify_and_update_call_from_tree.
        (gimple_fold_call): Likewise.
        * gimple-ssa-sprintf.c (try_substitute_return_value): Likewise.
        * tree-ssa-ccp.c (ccp_folder::fold_stmt): Likewise.
        (pass_fold_builtins::execute): Likewise.
        (optimize_stack_restore): Use replace_call_with_value.
        * tree-cfg.c (fold_loop_internal_call): Likewise.
        * tree-ssa-dce.c (maybe_optimize_arith_overflow): Use
        only gimplify_and_update_call_from_tree.
        * tree-ssa-strlen.c (handle_builtin_strlen): Likewise.
        (handle_builtin_strchr): Likewise.
        * tsan.c: Include gimple-fold.h instead of tree-ssa-propagate.h.

2021-04-26  Jakub Jelinek  <jakub@redhat.com>

        PR debug/100255
        * vmsdbgout.c (ASM_OUTPUT_DEBUG_STRING, vmsdbgout_begin_block,
        vmsdbgout_end_block, lookup_filename, vmsdbgout_source_line): Remove
        register keywords.

2021-04-25  liuhongt  <hongtao.liu@intel.com>

        PR target/98911
        * config/i386/i386-builtin.def (BDESC): Change the icode of
        the following builtins to CODE_FOR_nothing.
        * config/i386/i386.c (ix86_gimple_fold_builtin): Fold
        IX86_BUILTIN_PCMPEQB128, IX86_BUILTIN_PCMPEQW128,
        IX86_BUILTIN_PCMPEQD128, IX86_BUILTIN_PCMPEQQ,
        IX86_BUILTIN_PCMPEQB256, IX86_BUILTIN_PCMPEQW256,
        IX86_BUILTIN_PCMPEQD256, IX86_BUILTIN_PCMPEQQ256,
        IX86_BUILTIN_PCMPGTB128, IX86_BUILTIN_PCMPGTW128,
        IX86_BUILTIN_PCMPGTD128, IX86_BUILTIN_PCMPGTQ,
        IX86_BUILTIN_PCMPGTB256, IX86_BUILTIN_PCMPGTW256,
        IX86_BUILTIN_PCMPGTD256, IX86_BUILTIN_PCMPGTQ256.
        * config/i386/sse.md (avx2_eq<mode>3): Deleted.
        (sse2_eq<mode>3): Ditto.
        (sse4_1_eqv2di3): Ditto.
        (sse2_gt<mode>3): Rename to ..
        (*sse2_gt<mode>3): .. this.

2021-04-24  Iain Sandoe  <iain@sandoe.co.uk>

        Revert:
        2021-04-24  Iain Sandoe  <iain@sandoe.co.uk>

        PR target/100152
        * config/darwin.c (darwin_binds_local_p): Assume that any
        public symbol might be interposed for PIC code. Update function
        header comment to reflect current Darwin capability.

2021-04-24  Iain Sandoe  <iain@sandoe.co.uk>

        PR target/100152
        * config/darwin.c (darwin_binds_local_p): Assume that any
        public symbol might be interposed for PIC code. Update function
        header comment to reflect current Darwin capability.

2021-04-24  Richard Sandiford  <richard.sandiford@arm.com>

        * doc/sourcebuild.texi: Document no-opts and any-opts target
        selectors.

2021-04-23  YiFei Zhu  <zhuyifei1999@gmail.com>

        * config/bpf/bpf.h (ASM_OUTPUT_ALIGNED_BSS): Use .type and .lcomm.

2021-04-23  YiFei Zhu  <zhuyifei1999@gmail.com>

        * config/bpf/bpf.h (FUNCTION_BOUNDARY): Set to 64.

2021-04-23  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/100041
        * config/i386/i386-options.c (ix86_option_override_internal):
        Error out when -m96bit-long-double is used with 64bit targets.
        * config/i386/i386.md (*pushxf_rounded): Remove pattern.

2021-04-23  Martin Liska  <mliska@suse.cz>

        * lto-wrapper.c: Remove FIXME about usage of
        hardware_concurrency. The function is not on par with
        what we have now.

2021-04-23  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/100182
        * config/i386/sync.md (FILD_ATOMIC/FIST_ATOMIC FP load peephole2):
        Copy operand 3 to operand 4.  Use sse_reg_operand
        as operand 3 predicate.
        (FILD_ATOMIC/FIST_ATOMIC FP load peephole2 with mem blockage): Ditto.
        (LDX_ATOMIC/STX_ATOMIC FP load peephole2): Ditto.
        (LDX_ATOMIC/LDX_ATOMIC FP load peephole2 with mem blockage): Ditto.
        (FILD_ATOMIC/FIST_ATOMIC FP store peephole2):
        Copy operand 1 to operand 0.
        (FILD_ATOMIC/FIST_ATOMIC FP store peephole2 with mem blockage): Ditto.
        (LDX_ATOMIC/STX_ATOMIC FP store peephole2): Ditto.
        (LDX_ATOMIC/LDX_ATOMIC FP store peephole2 with mem blockage): Ditto.

2021-04-23  Alex Coplan  <alex.coplan@arm.com>

        PR rtl-optimization/100230
        * early-remat.c (early_remat::sort_candidates): Use delete[]
        instead of delete for array allocated with new[].

2021-04-23  Richard Biener  <rguenther@suse.de>

        * genmatch.c (lower_cond): Remove VEC_COND_EXPR special-casing.
        (capture_info::capture_info): Likewise.
        (capture_info::walk_match): Likewise.
        (expr::gen_transform): Likewise.
        (dt_simplify::gen_1): Likewise.
        * gimple-match-head.c (maybe_resimplify_conditional_op):
        Remove VEC_COND_EXPR special-casing.
        (gimple_simplify): Likewise.
        * gimple.c (gimple_could_trap_p_1): Adjust.
        * tree-ssa-pre.c (compute_avail): Allow VEC_COND_EXPR
        to participate in PRE.

2021-04-23  Richard Biener  <rguenther@suse.de>

        * cfganal.c (connect_infinite_loops_to_exit): First call
        add_noreturn_fake_exit_edges.
        * ipa-sra.c (process_scan_results): Do not call the now redundant
        add_noreturn_fake_exit_edges.
        * predict.c (tree_estimate_probability): Likewise.
        (rebuild_frequencies): Likewise.
        * store-motion.c (one_store_motion_pass): Likewise.

2021-04-23  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/100222
        * predict.c (pass_profile::execute): Remove redundant call to
        mark_irreducible_loops.
        (report_predictor_hitrates): Likewise.

2021-04-23  Richard Biener  <rguenther@suse.de>

        * tree-ssa-loop-ivopts.c (rewrite_use_nonlinear_expr): Avoid
        valid_gimple_rhs_p by instead gimplifying to one.

2021-04-23  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/99971
        * tree-vect-data-refs.c (vect_slp_analyze_node_dependences):
        Always use TBAA for loads.

2021-04-23  liuhongt  <hongtao.liu@intel.com>

        PR target/100093
        * config/i386/i386-options.c (ix86_option_override_internal):
        Clear MASK_AVX256_SPLIT_UNALIGNED_LOAD/STORE in x_target_flags
        when X86_TUNE_AVX256_UNALIGNED_LOAD/STORE_OPTIMAL is enabled
        by target attribute.

2021-04-23  David Edelsohn  <dje.gcc@gmail.com>

        * config/rs6000/aix71.h (PREFERRED_DEBUGGING_TYPE): Change to
        DWARF2_DEBUG.
        * config/rs6000/aix72.h (PREFERRED_DEBUGGING_TYPE): Same.

2021-04-22  David Edelsohn  <dje.gcc@gmail.com>

        * config.gcc (powerpc-ibm-aix6.*): Remove.
        * config/rs6000/aix61.h: Delete.

2021-04-22  Martin Liska  <mliska@suse.cz>

        PR testsuite/100159
        PR testsuite/100192
        * builtins.c (expand_builtin): Fix typos and missing comments.
        * dwarf2out.c (gen_subprogram_die): Likewise.
        (gen_struct_or_union_type_die): Likewise.

2021-04-22  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/100119
        * config/i386/i386-expand.c (ix86_expand_convert_uns_sidf_sse):
        Remove the sign with FE_DOWNWARD, where x - x = -0.0.

2021-04-21  Iain Sandoe  <iain@sandoe.co.uk>

        * config/i386/darwin.h (TARGET_64BIT): Remove definition
        based on TARGET_ISA_64BIT.
        (TARGET_64BIT_P): Remove definition based on
        TARGET_ISA_64BIT_P().

2021-04-21  Martin Liska  <mliska@suse.cz>

        Revert:
        2021-04-21  Martin Liska  <mliska@suse.cz>

        * lto-wrapper.c (cpuset_popcount): Remove.
        (init_num_threads): Remove and use hardware_concurrency.

2021-04-21  Martin Liska  <mliska@suse.cz>

        PR jit/98615
        * main.c (main): Call toplev::finalize in CHECKING_P mode.
        * ipa-modref.c (ipa_modref_c_finalize): summaries are NULL
        when incremental LTO linking happens.

2021-04-21  Martin Liska  <mliska@suse.cz>

        * lto-wrapper.c (run_gcc): When -flto=jobserver is used, but the
        makeserver cannot be detected, then use -flto=N fallback.

2021-04-21  Richard Sandiford  <richard.sandiford@arm.com>

        * acinclude.m4 (gcc_AC_INITFINI_ARRAY): When cross-compiling,
        default to yes for aarch64-linux-gnu.
        * configure: Regenerate.

2021-04-21  Martin Liska  <mliska@suse.cz>

        * lto-wrapper.c (cpuset_popcount): Remove.
        (init_num_threads): Remove and use hardware_concurrency.

2021-04-21  Martin Liska  <mliska@suse.cz>

        * config/i386/i386.c: Remove superfluous || TARGET_MACHO
        which remains to be '(... || 0)' and clang complains about it.
        * dwarf2out.c (AT_vms_delta): Declare conditionally.
        (add_AT_vms_delta): Likewise.
        * tree.c (fld_simplified_type): Use rather more common pattern
        for disabling of something (#if 0).
        (get_tree_code_name): Likewise.
        (verify_type_variant): Likewise.

2021-04-21  Martin Liska  <mliska@suse.cz>

        * config/i386/i386-expand.c (decide_alignment): Use newly named
        macro TARGET_CPU_P.
        * config/i386/i386.c (ix86_decompose_address): Likewise.
        (ix86_address_cost): Likewise.
        (ix86_lea_outperforms): Likewise.
        (ix86_avoid_lea_for_addr): Likewise.
        (ix86_add_stmt_cost): Likewise.
        * config/i386/i386.h (TARGET_*): Remove.
        (TARGET_CPU_P): New macro.
        * config/i386/i386.md: Use newly named macro TARGET_CPU_P.
        * config/i386/x86-tune-sched-atom.c (do_reorder_for_imul): Likewise.
        (swap_top_of_ready_list): Likewise.
        (ix86_atom_sched_reorder): Likewise.
        * config/i386/x86-tune-sched-bd.c (ix86_bd_has_dispatch): Likewise.
        * config/i386/x86-tune-sched.c (ix86_adjust_cost): Likewise.

2021-04-21  Martin Liska  <mliska@suse.cz>

        * config/i386/i386-options.c (TARGET_EXPLICIT_NO_SAHF_P):
        Define.
        (SET_TARGET_NO_SAHF): Likewise.
        (TARGET_EXPLICIT_PREFETCH_SSE_P): Likewise.
        (SET_TARGET_PREFETCH_SSE): Likewise.
        (TARGET_EXPLICIT_NO_TUNE_P): Likewise.
        (SET_TARGET_NO_TUNE): Likewise.
        (TARGET_EXPLICIT_NO_80387_P): Likewise.
        (SET_TARGET_NO_80387): Likewise.
        (DEF_PTA): New.
        * config/i386/i386.h (TARGET_*): Remove.
        * opth-gen.awk: Generate new used macros.

2021-04-21  Martin Liska  <mliska@suse.cz>

        * config/i386/i386.h (PTA_*): Remove.
        (enum pta_flag): New.
        (DEF_PTA): Generate PTA_* values from i386-isa.def.
        * config/i386/i386-isa.def: New file.

2021-04-21  Alex Coplan  <alex.coplan@arm.com>

        PR target/99988
        * config/aarch64/aarch64-bti-insert.c (aarch64_bti_j_insn_p): New.
        (rest_of_insert_bti): Avoid inserting duplicate bti j insns for
        jump table targets.

2021-04-21  H.J. Lu  <hjl.tools@gmail.com>

        * config.gcc: Install mwaitintrin.h for i[34567]86-*-* and
        x86_64-*-* targets.
        * common/config/i386/i386-common.c (OPTION_MASK_ISA2_MWAIT_SET):
        New.
        (OPTION_MASK_ISA2_MWAIT_UNSET): Likewise.
        (ix86_handle_option): Handle -mmwait.
        * config/i386/i386-builtins.c (ix86_init_mmx_sse_builtins):
        Replace OPTION_MASK_ISA_SSE3 with OPTION_MASK_ISA2_MWAIT on
        __builtin_ia32_monitor and __builtin_ia32_mwait.
        * config/i386/i386-options.c (isa2_opts): Add -mmwait.
        (ix86_valid_target_attribute_inner_p): Likewise.
        (ix86_option_override_internal): Enable mwait/monitor
        instructions for -msse3.
        * config/i386/i386.h (TARGET_MWAIT): New.
        (TARGET_MWAIT_P): Likewise.
        * config/i386/i386.opt: Add -mmwait.
        * config/i386/mwaitintrin.h: New file.
        * config/i386/pmmintrin.h: Include <mwaitintrin.h>.
        * config/i386/sse.md (sse3_mwait): Replace TARGET_SSE3 with
        TARGET_MWAIT.
        (@sse3_monitor_<mode>): Likewise.
        * config/i386/x86gprintrin.h: Include <mwaitintrin.h>.
        * doc/extend.texi: Document mwait target attribute.
        * doc/invoke.texi: Document -mmwait.

2021-04-21  Martin Liska  <mliska@suse.cz>

        * config/i386/i386-options.c (DEF_ENUM): Remove it.
        * config/i386/i386-opts.h (DEF_ENUM): Likewise.
        * config/i386/stringop.def (DEF_ENUM): Likewise.

2021-04-21  Martin Liska  <mliska@suse.cz>

        * tree-cfg.c (gimple_verify_flow_info): Use qD instead
        of print_generic_expr.

2021-04-21  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/100148
        * cprop.c (constprop_register): Use next_nondebug_insn instead of
        NEXT_INSN.

2021-04-21  Martin Liska  <mliska@suse.cz>

        PR ipa/98815
        * cgraphunit.c (cgraph_node::analyze): Remove duplicate
        free_dominance_info calls.

2021-04-21  Richard Biener  <rguenther@suse.de>

        * gimple-fold.c (maybe_fold_reference): Remove is_lhs
        parameter (and assume it to be false).
        (fold_gimple_assign): Adjust, remove all callers of
        maybe_fold_reference calling it with is_lhs true.
        (gimple_fold_call): Likewise.
        (fold_stmt_1): Likewise.

2021-04-21  Richard Biener  <rguenther@suse.de>

        * fold-const.c (pedantic_non_lvalue_loc): Remove.
        (fold_binary_loc): Adjust.
        (fold_ternary_loc): Likewise.

2021-04-21  Richard Sandiford  <richard.sandiford@arm.com>

        PR middle-end/100130
        * varasm.c (get_block_for_decl): Make sure that any use of the
        retain attribute matches the section's retain flag.
        (switch_to_section): Check for retain mismatches even when
        changing sections, but do not warn if the given decl is the
        section's named.decl.
        (output_object_block): Pass the first decl in the block (if any)
        to switch_to_section.

2021-04-20  H.J. Lu  <hjl.tools@gmail.com>

        * config/i386/i386-c.c (ix86_target_macros_internal): Define
        __CRC32__ for -mcrc32.
        * config/i386/i386-options.c (ix86_option_override_internal):
        Enable crc32 instruction for -msse4.2.
        * config/i386/i386.md (sse4_2_crc32<mode>): Remove TARGET_SSE4_2
        check.
        (sse4_2_crc32di): Likewise.
        * config/i386/ia32intrin.h: Use crc32 target option for CRC32
        intrinsics.

2021-04-20  Segher Boessenkool  <segher@kernel.crashing.org>

        PR target/100108
        * config/rs6000/rs6000.c (rs6000_machine_from_flags): Do not consider
        OPTION_MASK_ISEL.

2021-04-20  Martin Liska  <mliska@suse.cz>

        * doc/invoke.texi: Fix typo.
        * params.opt: Likewise.

2021-04-20  Martin Liska  <mliska@suse.cz>

        * doc/invoke.texi: Document new param.

2021-04-19  Andrew MacLeod  <amacleod@redhat.com>

        PR tree-optimization/100081
        * gimple-range-cache.h (ranger_cache): Inherit from gori_compute
        rather than gori_compute_cache.
        * gimple-range-gori.cc (is_gimple_logical_p): Move to top of file.
        (range_def_chain::m_logical_depth): New member.
        (range_def_chain::range_def_chain): Initialize m_logical_depth.
        (range_def_chain::get_def_chain): Don't build defchains through more
        than LOGICAL_LIMIT logical expressions.
        * params.opt (param_ranger_logical_depth): New.

2021-04-19  Richard Earnshaw  <rearnsha@arm.com>

        PR target/100067
        * config/arm/arm.c (arm_configure_build_target): Do not strip
        extended FPU/SIMD feature bits from the target ISA when -mfpu
        is specified (partial revert of r11-8168).

2021-04-19  Thomas Schwinge  <thomas@codesourcery.com>

        * params.opt (-param=openacc-kernels=): Add.
        * omp-oacc-kernels-decompose.cc
        (pass_omp_oacc_kernels_decompose::gate): Use it.
        * doc/invoke.texi (-fopenacc-kernels=@var{mode}): Move...
        (--param): ... here, 'openacc-kernels'.

2021-04-19  Martin Liska  <mliska@suse.cz>

        PR c/100143
        * gengtype.c (finish_root_table): Align function arguments
        in between declaration and definition.

2021-04-19  Eric Botcazou  <ebotcazou@adacore.com>

        * config/i386/winnt.c (i386_pe_seh_cold_init): Properly deal with
        frames larger than the SEH maximum frame size.

2021-04-18  Segher Boessenkool  <segher@kernel.crashing.org>

        PR rtl-optimization/99927
        * combine.c (distribute_notes) [REG_UNUSED]: If the register already
        is dead, just drop it.

2021-04-17  Iain Buclaw  <ibuclaw@gdcproject.org>

        PR d/99914
        * config/i386/winnt-d.c (TARGET_D_TEMPLATES_ALWAYS_COMDAT): Define.
        * doc/tm.texi: Regenerate.
        * doc/tm.texi.in (D language and ABI): Add @hook for
        TARGET_D_TEMPLATES_ALWAYS_COMDAT.

2021-04-17  Iain Buclaw  <ibuclaw@gdcproject.org>

        * config/darwin-d.c (darwin_d_handle_target_object_format): New
        function.
        (darwin_d_register_target_info): New function.
        (TARGET_D_REGISTER_OS_TARGET_INFO): Define.
        * config/dragonfly-d.c (dragonfly_d_handle_target_object_format): New
        function.
        (dragonfly_d_register_target_info): New function.
        (TARGET_D_REGISTER_OS_TARGET_INFO): Define.
        * config/freebsd-d.c (freebsd_d_handle_target_object_format): New
        function.
        (freebsd_d_register_target_info): New function.
        (TARGET_D_REGISTER_OS_TARGET_INFO): Define.
        * config/glibc-d.c (glibc_d_handle_target_object_format): New
        function.
        (glibc_d_register_target_info): New function.
        (TARGET_D_REGISTER_OS_TARGET_INFO): Define.
        * config/i386/i386-d.c (ix86_d_handle_target_object_format): New
        function.
        (ix86_d_register_target_info): Add ix86_d_handle_target_object_format
        as handler for objectFormat key.
        * config/i386/winnt-d.c (winnt_d_handle_target_object_format): New
        function.
        (winnt_d_register_target_info): New function.
        (TARGET_D_REGISTER_OS_TARGET_INFO): Define.
        * config/netbsd-d.c (netbsd_d_handle_target_object_format): New
        function.
        (netbsd_d_register_target_info): New function.
        (TARGET_D_REGISTER_OS_TARGET_INFO): Define.
        * config/openbsd-d.c (openbsd_d_handle_target_object_format): New
        function.
        (openbsd_d_register_target_info): New function.
        (TARGET_D_REGISTER_OS_TARGET_INFO): Define.
        * config/pa/pa-d.c (pa_d_handle_target_object_format): New function.
        (pa_d_register_target_info): Add pa_d_handle_target_object_format as
        handler for objectFormat key.
        * config/rs6000/rs6000-d.c (rs6000_d_handle_target_object_format): New
        function.
        (rs6000_d_register_target_info): Add
        rs6000_d_handle_target_object_format as handler for objectFormat key.
        * config/sol2-d.c (solaris_d_handle_target_object_format): New
        function.
        (solaris_d_register_target_info): New function.
        (TARGET_D_REGISTER_OS_TARGET_INFO): Define.

2021-04-16  Jakub Jelinek  <jakub@redhat.com>

        PR target/91710
        * config/aarch64/aarch64.c (aarch64_function_arg_alignment): Change
        abi_break argument from bool * to unsigned *, store there the pre-GCC 9
        alignment.
        (aarch64_layout_arg, aarch64_gimplify_va_arg_expr): Adjust callers.
        (aarch64_function_arg_regno_p): Likewise.  Only emit -Wpsabi note if
        the old and new alignment after applying MIN/MAX to it is different.

2021-04-16  Tamar Christina  <tamar.christina@arm.com>

        PR target/100048
        * config/aarch64/aarch64-sve.md (@aarch64_sve_trn1_conv<mode>): New.
        * config/aarch64/aarch64.c (aarch64_expand_sve_const_pred_trn): Use new
        TRN optab.
        * config/aarch64/iterators.md (UNSPEC_TRN1_CONV): New.

2021-04-16  Bill Schmidt  <wschmidt@linux.ibm.com>

        * doc/extend.texi (PowerPC AltiVec/VSX Built-in Functions): Revise
        this section and its subsections.

2021-04-16  Jakub Jelinek  <jakub@redhat.com>

        PR target/100075
        * config/aarch64/aarch64.md (*neg_asr_si2_extr, *extrsi5_insn_di): New
        define_insn patterns.

2021-04-16  Richard Sandiford  <richard.sandiford@arm.com>

        PR rtl-optimization/98689
        * reg-notes.def (UNTYPED_CALL): New note.
        * combine.c (distribute_notes): Handle it.
        * emit-rtl.c (try_split): Likewise.
        * rtlanal.c (rtx_properties::try_to_add_insn): Likewise.  Assume
        that calls with the note implicitly set all return value registers.
        * builtins.c (expand_builtin_apply): Add a REG_UNTYPED_CALL
        to untyped_calls.

2021-04-16  Richard Sandiford  <richard.sandiford@arm.com>

        PR rtl-optimization/99596
        * rtlanal.c (rtx_properties::try_to_add_insn): Don't add global
        register accesses for const calls.  Assume that pure functions
        can only read from global registers.  Ignore cases in which
        the stack pointer has been marked global.

2021-04-16  Jakub Jelinek  <jakub@redhat.com>

        PR target/99767
        * tree-vect-loop.c (vect_transform_loop): Don't remove just
        dead scalar .MASK_LOAD calls, but also dead .COND_* calls - replace
        them by their last argument.

2021-04-15  Martin Liska  <mliska@suse.cz>

        * doc/invoke.texi: Other params don't use it, remove it.

2021-04-15  Richard Biener  <rguenther@suse.de>

        * gimple-builder.h: Add deprecation note.

2021-04-15  Richard Sandiford  <richard.sandiford@arm.com>

        PR c++/98852
        * attribs.h (restrict_type_identity_attributes_to): Declare.
        * attribs.c (restrict_type_identity_attributes_to): New function.

2021-04-15  Richard Sandiford  <richard.sandiford@arm.com>

        PR c/98852
        * attribs.h (affects_type_identity_attributes): Declare.
        * attribs.c (remove_attributes_matching): New function.
        (affects_type_identity_attributes): Likewise.

2021-04-15  Jakub Jelinek  <jakub@redhat.com>

        PR target/100056
        * config/aarch64/aarch64.md (*<LOGICAL:optab>_<SHIFT:optab><mode>3):
        Add combine splitters for *<LOGICAL:optab>_ashl<mode>3 with
        ZERO_EXTEND, SIGN_EXTEND or AND.

2021-04-14  Richard Sandiford  <richard.sandiford@arm.com>

        PR rtl-optimization/99929
        * rtl.h (same_vector_encodings_p): New function.
        * cse.c (exp_equiv_p): Check that CONST_VECTORs have the same encoding.
        * cselib.c (rtx_equal_for_cselib_1): Likewise.
        * jump.c (rtx_renumbered_equal_p): Likewise.
        * lra-constraints.c (operands_match_p): Likewise.
        * reload.c (operands_match_p): Likewise.
        * rtl.c (rtx_equal_p_cb, rtx_equal_p): Likewise.

2021-04-14  Richard Sandiford  <richard.sandiford@arm.com>

        * print-rtl.c (rtx_writer::print_rtx_operand_codes_E_and_V): Print
        more information about variable-length CONST_VECTORs.

2021-04-14  Vladimir N. Makarov  <vmakarov@redhat.com>

        PR rtl-optimization/100066
        * lra-constraints.c (split_reg): Check paradoxical_subreg_p for
        ordered modes when choosing splitting mode for hard reg.

2021-04-14  Richard Sandiford  <richard.sandiford@arm.com>

        PR target/99246
        * config/aarch64/aarch64.c (aarch64_expand_sve_const_vector_sel):
        New function.
        (aarch64_expand_sve_const_vector): Use it for nelts_per_pattern==2.

2021-04-14  Andreas Krebbel  <krebbel@linux.ibm.com>

        * config/s390/s390-builtins.def (O_M5, O_M12, ...): Add new macros
        for mask operand types.
        (s390_vec_permi_s64, s390_vec_permi_b64, s390_vec_permi_u64)
        (s390_vec_permi_dbl, s390_vpdi): Use the M5 type for the immediate
        operand.
        (s390_vec_msum_u128, s390_vmslg): Use the M12 type for the
        immediate operand.
        * config/s390/s390.c (s390_const_operand_ok): Check the new
        operand types and generate a list of valid values.

2021-04-14  Iain Buclaw  <ibuclaw@gdcproject.org>

        * doc/tm.texi: Regenerate.
        * doc/tm.texi.in (D language and ABI): Add @hook for
        TARGET_D_REGISTER_OS_TARGET_INFO.

2021-04-14  Iain Buclaw  <ibuclaw@gdcproject.org>

        * config/aarch64/aarch64-d.c (aarch64_d_handle_target_float_abi): New
        function.
        (aarch64_d_register_target_info): New function.
        * config/aarch64/aarch64-protos.h (aarch64_d_register_target_info):
        Declare.
        * config/aarch64/aarch64.h (TARGET_D_REGISTER_CPU_TARGET_INFO):
        Define.
        * config/arm/arm-d.c (arm_d_handle_target_float_abi): New function.
        (arm_d_register_target_info): New function.
        * config/arm/arm-protos.h (arm_d_register_target_info): Declare.
        * config/arm/arm.h (TARGET_D_REGISTER_CPU_TARGET_INFO): Define.
        * config/i386/i386-d.c (ix86_d_handle_target_float_abi): New function.
        (ix86_d_register_target_info): New function.
        * config/i386/i386-protos.h (ix86_d_register_target_info): Declare.
        * config/i386/i386.h (TARGET_D_REGISTER_CPU_TARGET_INFO): Define.
        * config/mips/mips-d.c (mips_d_handle_target_float_abi): New function.
        (mips_d_register_target_info): New function.
        * config/mips/mips-protos.h (mips_d_register_target_info): Declare.
        * config/mips/mips.h (TARGET_D_REGISTER_CPU_TARGET_INFO): Define.
        * config/pa/pa-d.c (pa_d_handle_target_float_abi): New function.
        (pa_d_register_target_info): New function.
        * config/pa/pa-protos.h (pa_d_register_target_info): Declare.
        * config/pa/pa.h (TARGET_D_REGISTER_CPU_TARGET_INFO): Define.
        * config/riscv/riscv-d.c (riscv_d_handle_target_float_abi): New
        function.
        (riscv_d_register_target_info): New function.
        * config/riscv/riscv-protos.h (riscv_d_register_target_info): Declare.
        * config/riscv/riscv.h (TARGET_D_REGISTER_CPU_TARGET_INFO): Define.
        * config/rs6000/rs6000-d.c (rs6000_d_handle_target_float_abi): New
        function.
        (rs6000_d_register_target_info): New function.
        * config/rs6000/rs6000-protos.h (rs6000_d_register_target_info):
        Declare.
        * config/rs6000/rs6000.h (TARGET_D_REGISTER_CPU_TARGET_INFO): Define.
        * config/s390/s390-d.c (s390_d_handle_target_float_abi): New function.
        (s390_d_register_target_info): New function.
        * config/s390/s390-protos.h (s390_d_register_target_info): Declare.
        * config/s390/s390.h (TARGET_D_REGISTER_CPU_TARGET_INFO): Define.
        * config/sparc/sparc-d.c (sparc_d_handle_target_float_abi): New
        function.
        (sparc_d_register_target_info): New function.
        * config/sparc/sparc-protos.h (sparc_d_register_target_info): Declare.
        * config/sparc/sparc.h (TARGET_D_REGISTER_CPU_TARGET_INFO): Define.
        * doc/tm.texi: Regenerate.
        * doc/tm.texi.in (D language and ABI): Add @hook for
        TARGET_D_REGISTER_CPU_TARGET_INFO.

2021-04-14  Iain Buclaw  <ibuclaw@gdcproject.org>

        * config/i386/i386-d.c (ix86_d_has_stdcall_convention): New function.
        * config/i386/i386-protos.h (ix86_d_has_stdcall_convention): Declare.
        * config/i386/i386.h (TARGET_D_HAS_STDCALL_CONVENTION): Define.
        * doc/tm.texi: Regenerate.
        * doc/tm.texi.in (D language and ABI): Add @hook for
        TARGET_D_HAS_STDCALL_CONVENTION.

2021-04-14  Richard Biener  <rguenther@suse.de>

        * tree-cfg.c (verify_gimple_assign_ternary): Verify that
        VEC_COND_EXPRs have a gimple_val condition.
        * tree-ssa-propagate.c (valid_gimple_rhs_p): VEC_COND_EXPR
        can no longer have a GENERIC condition.

2021-04-14  Richard Earnshaw  <rearnsha@arm.com>

        PR target/100067
        * config/arm/arm.c (arm_configure_build_target): Strip isa_all_fpbits
        from the isa_delta when -mfpu has been used.
        (arm_options_perform_arch_sanity_checks): It's the architecture that
        lacks an FPU not the processor.

2021-04-13  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/100053
        * tree-ssa-sccvn.c (vn_nary_op_get_predicated_value): Do
        not use optimistic dominance queries for backedges to validate
        predicated values.
        (dominated_by_p_w_unex): Add parameter to ignore executable
        state on backedges.
        (rpo_elim::eliminate_avail): Adjust.

2021-04-13  Jakub Jelinek  <jakub@redhat.com>

        PR target/100028
        * config/aarch64/aarch64.md (*aarch64_bfxil<mode>_extr,
        *aarch64_bfxilsi_extrdi): New define_insn patterns.

2021-04-13  Jakub Jelinek  <jakub@redhat.com>

        PR target/99648
        * simplify-rtx.c (simplify_immed_subreg): For MODE_COMPOSITE_P
        outermode, return NULL if the result doesn't encode back to the
        original byte sequence.
        (simplify_gen_subreg): Don't create SUBREGs from constants to
        MODE_COMPOSITE_P outermode.

2021-04-12  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/99905
        * combine.c (expand_compound_operation): If pos + len > modewidth,
        perform the right shift by pos in inner_mode and then convert to mode,
        instead of trying to simplify a shift of rtx with inner_mode by pos
        as if it was a shift in mode.

2021-04-12  Jakub Jelinek  <jakub@redhat.com>

        PR debug/99830
        * combine.c (simplify_and_const_int_1): Don't optimize varop
        away if it has side-effects.

2021-04-12  Martin Liska  <mliska@suse.cz>

        * doc/extend.texi: Escape @smallexample content.

2021-04-12  Stefan Schulze Frielinghaus  <stefansf@linux.ibm.com>

        * config/s390/s390.md ("*movdi_31", "*movdi_64"): Add
          alternative in order to load a DFP zero.

2021-04-12  Martin Liska  <mliska@suse.cz>

        * doc/extend.texi: Be more precise in documentation
        of symver attribute.

2021-04-12  Martin Liska  <mliska@suse.cz>

        PR sanitizer/99877
        * gimplify.c (gimplify_expr): Right now, we unpoison all
        variables before a goto <dest>. We should not do it if we are
        in a omp context.

2021-04-12  Cui,Lili  <lili.cui@intel.com>

        * common/config/i386/cpuinfo.h (get_intel_cpu): Handle
        rocketlake.
        * common/config/i386/i386-common.c (processor_names): Add
        rocketlake.
        (processor_alias_table): Add rocketlake.
        * common/config/i386/i386-cpuinfo.h (processor_subtypes): Add
        INTEL_COREI7_ROCKETLAKE.
        * config.gcc: Add -march=rocketlake.
        * config/i386/i386-c.c (ix86_target_macros_internal): Handle
        rocketlake.
        * config/i386/i386-options.c (m_ROCKETLAKE)  : Define.
        (processor_cost_table): Add rocketlake cost.
        * config/i386/i386.h (ix86_size_cost) : Define
        TARGET_ROCKETLAKE.
        (processor_type) : Add PROCESSOR_ROCKETLAKE.
        (PTA_ROCKETLAKE): Ditto.
        * doc/extend.texi: Add rocketlake.
        * doc/invoke.texi: Add rocketlake.

2021-04-12  Cui,Lili  <lili.cui@intel.com>

        * config/i386/i386.h (PTA_ALDERLAKE): Change alderlake ISA list.
        * config/i386/i386-options.c (m_CORE_AVX2): Add m_ALDERLAKE.
        * common/config/i386/cpuinfo.h (get_intel_cpu): Add AlderLake model.
        * doc/invoke.texi: Change alderlake ISA list.

2021-04-11  Hafiz Abid Qadeer  <abidh@codesourcery.com>

        PR middle-end/98088
        * omp-expand.c (expand_oacc_collapse_init): Update condition in
        a gcc_assert.

2021-04-10  H.J. Lu  <hjl.tools@gmail.com>

        PR target/99744
        * config/i386/serializeintrin.h (_serialize): Defined as macro.

2021-04-10  Jakub Jelinek  <jakub@redhat.com>

        PR lto/99849
        * expr.c (expand_expr_addr_expr_1): Test is_global_var rather than
        just TREE_STATIC on COMPOUND_LITERAL_EXPR_DECLs.

2021-04-10  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/99989
        * gimple-ssa-warn-alloca.c
        (alloca_type_and_limit::alloca_type_and_limit): Initialize limit to
        0 with integer precision unconditionally.

2021-04-10  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/98601
        * rtlanal.c (rtx_addr_can_trap_p_1): Allow in assert unknown size
        not just for BLKmode, but also for VOIDmode.  For STRICT_ALIGNMENT
        unaligned_mems handle VOIDmode like BLKmode.

2021-04-10  Jan Hubicka  <hubicka@ucw.cz>

        PR lto/99857
        * tree.c (free_lang_data_in_decl): Do not release body of
        declare_variant_alt.

2021-04-09  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64.c (aarch64_option_restore): If the
        architecture was specified explicitly and the tuning wasn't,
        tune for the architecture rather than the configured default CPU.

2021-04-09  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64.md (tlsdesc_small_sve_<mode>): Use X30
        as the temporary register.

2021-04-09  Martin Liska  <mliska@suse.cz>

        * doc/extend.texi: Move non-target attributes on the top level.

2021-04-09  Martin Liska  <mliska@suse.cz>

        * doc/invoke.texi: Document minimum and maximum value of the
        argument for both supported compression algorithms.

2021-04-08  David Edelsohn  <dje.gcc@gmail.com>

        * config/rs6000/rs6000.c (rs6000_xcoff_select_section): Select
        TLS BSS before TLS data.
        * config/rs6000/xcoff.h (ASM_OUTPUT_TLS_COMMON): Use .comm.

2021-04-08  Richard Sandiford  <richard.sandiford@arm.com>

        * doc/sourcebuild.texi (stdint_types_mbig_endian): Document.

2021-04-08  Richard Sandiford  <richard.sandiford@arm.com>

        * match.pd: Extend vec_cond folds to handle shifts.

2021-04-08  Maciej W. Rozycki  <macro@orcam.me.uk>

        * config/vax/vax.md: Fix comment for `*bit<mode>' pattern's
        peephole.

2021-04-08  Alex Coplan  <alex.coplan@arm.com>

        PR target/99647
        * config/arm/iterators.md (MVE_vecs): New.
        (V_elem): Also handle V2DF.
        * config/arm/mve.md (*mve_mov<mode>): Rename to ...
        (*mve_vdup<mode>): ... this. Remove second alternative since
        vec_duplicate of const_int is not canonical RTL, and we don't
        want to match symbol_refs.
        (*mve_vec_duplicate<mode>): Delete (pattern is redundant).

2021-04-08  Xionghu Luo  <luoxhu@linux.ibm.com>

        * fold-const.c (fold_single_bit_test): Fix typo.
        * print-rtl.c (print_rtx_insn_vec): Call print_rtl_single
        instead.

2021-04-07  Richard Sandiford  <richard.sandiford@arm.com>

        PR tree-optimization/97513
        * tree-vect-slp.c (vect_add_slp_permutation): New function,
        split out from...
        (vectorizable_slp_permutation): ...here.  Detect cases in which
        all VEC_PERM_EXPRs are guaranteed to have the same stepped
        permute vector and only generate one permute vector for that case.
        Extend that case to handle variable-length vectors.

2021-04-07  Richard Sandiford  <richard.sandiford@arm.com>

        PR tree-optimization/99873
        * tree-vect-slp.c (vect_slp_prefer_store_lanes_p): New function.
        (vect_build_slp_instance): Don't split store groups that could
        use IFN_STORE_LANES.

2021-04-07  Jakub Jelinek  <jakub@redhat.com>

        PR target/99872
        * varasm.c (output_constant_pool_contents): Don't strip name encoding
        from XSTR (desc->sym, 0) or from label before passing those to
        ASM_OUTPUT_DEF.

2021-04-07  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/99954
        * tree-loop-distribution.c: Include tree-affine.h.
        (generate_memcpy_builtin): Try using tree-affine to prove
        non-overlap.
        (loop_distribution::classify_builtin_ldst): Always classify
        as PKIND_MEMMOVE.

2021-04-07  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/99947
        * tree-vect-loop.c (vectorizable_induction): Pre-allocate
        steps vector to avoid pushing elements from the reallocated
        vector.

2021-04-07  Richard Biener  <rguenther@suse.de>

        * tree-ssa-sccvn.h (print_vn_reference_ops): Declare.
        * tree-ssa-pre.c (print_pre_expr): Factor out VN reference operand
        printing...
        * tree-ssa-sccvn.c (print_vn_reference_ops): ... into this new
        function.
        (debug_vn_reference_ops): New.

2021-04-07  Bin Cheng  <bin.cheng@linux.alibaba.com>

        PR tree-optimization/98736
        * tree-loop-distribution.c
        * (loop_distribution::bb_top_order_init):
        Compute RPO with programing order preserved by calling function
        rev_post_order_and_mark_dfs_back_seme.

2021-04-06  Vladimir N. Makarov  <vmakarov@redhat.com>

        PR target/99781
        * lra-constraints.c (split_reg): Don't check paradoxical_subreg_p.
        * lra-lives.c (clear_sparseset_regnos, regnos_in_sparseset_p): New
        functions.
        (process_bb_lives): Don't update biggest mode of hard reg for
        implicit in multi-register group.  Use the new functions for
        updating dead_set and unused_set by register notes.

2021-04-06  Xianmiao Qu  <xianmiao_qu@c-sky.com>

        * config/csky/csky_pipeline_ck802.md : Use insn reservation name
        instead of *.

2021-04-06  H.J. Lu  <hjl.tools@gmail.com>

        * config/i386/x86-tune-costs.h (skylake_memcpy): Updated.
        (skylake_memset): Likewise.
        (skylake_cost): Change CLEAR_RATIO to 17.
        * config/i386/x86-tune.def (X86_TUNE_PREFER_KNOWN_REP_MOVSB_STOSB):
        Replace m_CANNONLAKE, m_ICELAKE_CLIENT, m_ICELAKE_SERVER,
        m_TIGERLAKE and m_SAPPHIRERAPIDS with m_SKYLAKE and m_CORE_AVX512.

2021-04-06  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/99880
        * tree-vect-loop.c (maybe_set_vectorized_backedge_value): Only
        set vectorized defs of relevant PHIs.

2021-04-06  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/99924
        * tree-vect-slp.c (vect_bb_partition_graph_r): Do not mark
        nodes w/o scalar stmts as visited.

2021-04-06  Alex Coplan  <alex.coplan@arm.com>

        PR target/99748
        * config/arm/arm.c (arm_libcall_uses_aapcs_base): Also use base
        PCS for [su]fix_optab.

2021-04-03  Iain Sandoe  <iain@sandoe.co.uk>

        * config/darwin.c (machopic_legitimize_pic_address): Check
        that the current pic register is one of the hard reg set
        before setting liveness.

2021-04-03  Iain Sandoe  <iain@sandoe.co.uk>

        * config/darwin.c (machopic_legitimize_pic_address): Fix
        whitespace, remove unused code.

2021-04-03  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/99882
        * gimple-ssa-store-merging.c (bswap_view_convert): Handle val with
        pointer type.

2021-04-03  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/99863
        * dse.c (replace_read): Drop regs_live argument.  Instead of
        regs_live, use store_insn->fixed_regs_live if non-NULL,
        otherwise punt if insns sequence clobbers or sets any hard
        registers.

2021-04-03  Jakub Jelinek  <jakub@redhat.com>

        PR testsuite/98125
        * targhooks.h (default_print_patchable_function_entry_1): Declare.
        * targhooks.c (default_print_patchable_function_entry_1): New function,
        copied from default_print_patchable_function_entry with an added flags
        argument.
        (default_print_patchable_function_entry): Rewritten into a small
        wrapper around default_print_patchable_function_entry_1.
        * config/rs6000/rs6000.c (TARGET_ASM_PRINT_PATCHABLE_FUNCTION_ENTRY):
        Redefine.
        (rs6000_print_patchable_function_entry): New function.

2021-04-02  Eric Botcazou  <ebotcazou@adacore.com>

        * doc/invoke.texi (fdelete-dead-exceptions): Minor tweak.

2021-04-01  Jason Merrill  <jason@redhat.com>

        PR c++/98481
        * common.opt: Document v15 and v16.

2021-04-01  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/99863
        * gimplify.c (gimplify_init_constructor): Recompute vector
        constructor flags.

2021-04-01  Jakub Jelinek  <jakub@redhat.com>

        * doc/extend.texi (symver attribute): Fix up syntax errors
        in the examples.

2021-04-01  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/96573
        * gimple-ssa-store-merging.c (init_symbolic_number): Handle
        also pointer types.

2021-04-01  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/99856
        * tree-vect-patterns.c (vect_recog_over_widening_pattern): Promote
        precision to vector element precision.

2021-04-01  Martin Jambor  <mjambor@suse.cz>

        PR tree-optimization/97009
        * tree-sra.c (access_or_its_child_written): New function.
        (propagate_subaccesses_from_rhs): Use it instead of a simple grp_write
        test.

2021-03-31  Jan Hubicka  <hubicka@ucw.cz>

        PR ipa/98265
        * cif-code.def (USES_COMDAT_LOCAL): Make CIF_FINAL_NORMAL.

2021-03-31  Pat Haugen  <pthaugen@linux.ibm.com>

        PR target/99133
        * config/rs6000/altivec.md (xxspltiw_v4si, xxspltiw_v4sf_inst,
        xxspltidp_v2df_inst, xxsplti32dx_v4si_inst, xxsplti32dx_v4sf_inst,
        xxblend_<mode>, xxpermx_inst, xxeval): Mark prefixed.
        * config/rs6000/mma.md (mma_<vvi4i4i8>, mma_<avvi4i4i8>,
        mma_<vvi4i4i2>, mma_<avvi4i4i2>, mma_<vvi4i4>, mma_<avvi4i4>,
        mma_<pvi4i2>, mma_<apvi4i2>, mma_<vvi4i4i4>, mma_<avvi4i4i4>):
        Likewise.
        * config/rs6000/rs6000.c (rs6000_final_prescan_insn): Adjust test.
        * config/rs6000/rs6000.md (define_attr "maybe_prefixed"): New.
        (define_attr "prefixed"): Update initializer.

2021-03-31  Jakub Jelinek  <jakub@redhat.com>

        PR debug/99490
        * dwarf2out.c (debug_ranges_dwo_section): New variable.
        (DW_RANGES_IDX_SKELETON): Define.
        (struct dw_ranges): Add begin_entry and end_entry members.
        (DEBUG_DWO_RNGLISTS_SECTION): Define.
        (add_ranges_num): Adjust r initializer for addition of *_entry
        members.
        (add_ranges_by_labels): For -gsplit-dwarf and force_direct,
        set idx to DW_RANGES_IDX_SKELETON.
        (use_distinct_base_address_for_range): New function.
        (index_rnglists): Don't set r->idx if it is equal to
        DW_RANGES_IDX_SKELETON.  Initialize r->begin_entry and
        r->end_entry for -gsplit-dwarf if those will be needed by
        output_rnglists.
        (output_rnglists): Add DWO argument.  If true, switch to
        debug_ranges_dwo_section rather than debug_ranges_section.
        Adjust l1/l2 label indexes.  Only output the offset table when
        dwo is true and don't include in there the skeleton range
        entry if present.  For -gsplit-dwarf, skip ranges that belong
        to the other rnglists section.  Change return type from void
        to bool and return true if there are any range entries for
        the other section.  For dwarf_split_debug_info use
        DW_RLE_startx_endx, DW_RLE_startx_length and DW_RLE_base_addressx
        entries instead of DW_RLE_start_end, DW_RLE_start_length and
        DW_RLE_base_address.  Use use_distinct_base_address_for_range.
        (init_sections_and_labels): Initialize debug_ranges_dwo_section
        if -gsplit-dwarf and DWARF >= 5.  Adjust ranges_section_label
        and range_base_label indexes.
        (dwarf2out_finish): Call index_rnglists earlier before finalizing
        .debug_addr.  Never emit DW_AT_rnglists_base attribute.  For
        -gsplit-dwarf and DWARF >= 5 call output_rnglists up to twice
        with different dwo arguments.
        (dwarf2out_c_finalize): Clear debug_ranges_dwo_section.

2021-03-31  Richard Sandiford  <richard.sandiford@arm.com>

        PR tree-optimization/98268
        * gimple-fold.c (maybe_canonicalize_mem_ref_addr): Call
        recompute_tree_invariant_for_addr_expr after successfully
        folding a TARGET_MEM_REF that occurs inside an ADDR_EXPR.

2021-03-31  Richard Sandiford  <richard.sandiford@arm.com>

        PR tree-optimization/99726
        * tree-data-ref.c (create_intersect_range_checks_index): Bail
        out if there is more than one access function SCEV for the loop
        being versioned.

2021-03-31  Richard Sandiford  <richard.sandiford@arm.com>

        PR rtl-optimization/97141
        PR rtl-optimization/98726
        * emit-rtl.c (valid_for_const_vector_p): Return true for
        CONST_POLY_INT_P.
        * rtx-vector-builder.h (rtx_vector_builder::step): Return a
        poly_wide_int instead of a wide_int.
        (rtx_vector_builder::apply_set): Take a poly_wide_int instead
        of a wide_int.
        * rtx-vector-builder.c (rtx_vector_builder::apply_set): Likewise.
        * config/aarch64/aarch64.c (aarch64_legitimate_constant_p): Return
        false for CONST_VECTORs that cannot be forced to memory.
        * config/aarch64/aarch64-simd.md (mov<mode>): If a CONST_VECTOR
        is too complex to force to memory, build it up from individual
        elements instead.

2021-03-31  Jan Hubicka  <jh@suse.cz>

        PR lto/99447
        * cgraph.c (cgraph_node::release_body): Fix overactive check.

2021-03-31  Christophe Lyon  <christophe.lyon@linaro.org>

        PR target/99786
        * config/arm/vec-common.md (mul<mode>3): Disable on iwMMXT, expect
        for V4HI and V2SI.

2021-03-31  H.J. Lu  <hjl.tools@gmail.com>

        * config/i386/i386-expand.c (expand_set_or_cpymem_via_rep):
        For TARGET_PREFER_KNOWN_REP_MOVSB_STOSB, don't convert QImode
        to SImode.
        (decide_alg): For TARGET_PREFER_KNOWN_REP_MOVSB_STOSB, use
        "rep movsb/stosb" only for known sizes.
        * config/i386/i386-options.c (processor_cost_table): Use Ice
        Lake cost for Cannon Lake, Ice Lake, Tiger Lake, Sapphire
        Rapids and Alder Lake.
        * config/i386/i386.h (TARGET_PREFER_KNOWN_REP_MOVSB_STOSB): New.
        * config/i386/x86-tune-costs.h (icelake_memcpy): New.
        (icelake_memset): Likewise.
        (icelake_cost): Likewise.
        * config/i386/x86-tune.def (X86_TUNE_PREFER_KNOWN_REP_MOVSB_STOSB):
        New.

2021-03-31  Richard Sandiford  <richard.sandiford@arm.com>

        PR target/98119
        * config/aarch64/aarch64.c
        (aarch64_vectorize_preferred_vector_alignment): Query the size
        of the provided SVE vector; do not assume that all SVE vectors
        have the same size.

2021-03-31  Jan Hubicka  <jh@suse.cz>

        PR lto/99447
        * cgraph.c (cgraph_node::release_body): Remove all callers and
        references.
        * cgraphclones.c (cgraph_node::materialize_clone): Do not do it here.
        * cgraphunit.c (cgraph_node::expand): And here.

2021-03-31  Martin Liska  <mliska@suse.cz>

        * ipa-modref.c (analyze_ssa_name_flags): Fix coding style
        and one negated condition.

2021-03-31  Jakub Jelinek  <jakub@redhat.com>
            Richard Sandiford  <richard.sandiford@arm.com>

        PR target/99813
        * config/aarch64/aarch64.md (*add<mode>3_poly_1): Swap Uai and Uav
        constraints on operands[2] and similarly 0 and rk constraints
        on operands[1] corresponding to that.

2021-03-31  Jakub Jelinek  <jakub@redhat.com>

        PR bootstrap/98860
        * configure.ac (HAVE_LD_BROKEN_PE_DWARF5): New AC_DEFINE if PECOFF
        linker doesn't support DWARF sections new in DWARF5.
        * config/i386/i386-options.c (ix86_option_override_internal): Default
        to dwarf_version 4 if HAVE_LD_BROKEN_PE_DWARF5 for TARGET_PECOFF
        targets.
        * config.in: Regenerated.
        * configure: Regenerated.

2021-03-30  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        PR target/99820
        * config/aarch64/aarch64.c (aarch64_analyze_loop_vinfo): Check for
        available issue_info before using it.

2021-03-30  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        PR target/99822
        * config/aarch64/aarch64.md (sub<mode>3_compare1_imm): Do not allow zero
        in operand 1.

2021-03-30  Xionghu Luo  <luoxhu@linux.ibm.com>

        PR target/99718
        * config/rs6000/altivec.md (altivec_lvsl_reg): Change to ...
        (altivec_lvsl_reg_<mode>): ... this.
        (altivec_lvsr_reg): Change to ...
        (altivec_lvsr_reg_<mode>): ... this.
        * config/rs6000/predicates.md (vec_set_index_operand): New.
        * config/rs6000/rs6000-c.c (altivec_resolve_overloaded_builtin):
        Enable 32bit variable vec_insert for all TARGET_VSX.
        * config/rs6000/rs6000.c (rs6000_expand_vector_set_var_p9):
        Enable 32bit variable vec_insert for p9 and above.
        (rs6000_expand_vector_set_var_p8): Rename to ...
        (rs6000_expand_vector_set_var_p7): ... this.
        (rs6000_expand_vector_set): Use TARGET_VSX and adjust assert
        position.
        * config/rs6000/vector.md (vec_set<mode>): Use vec_set_index_operand.
        * config/rs6000/vsx.md (xl_len_r): Use gen_altivec_lvsl_reg_di and
        gen_altivec_lvsr_reg_di.

2021-03-30  H.J. Lu  <hjl.tools@gmail.com>

        PR target/99744
        * config/i386/ia32intrin.h (__rdtsc): Defined as macro.
        (__rdtscp): Likewise.

2021-03-30  Tamar Christina  <tamar.christina@arm.com>

        PR tree-optimization/99825
        * tree-vect-slp-patterns.c (vect_check_evenodd_blend):
        Reject non-mult 2 lanes.

2021-03-30  Richard Earnshaw  <rearnsha@arm.com>

        PR target/99773
        * config/arm/arm.c (arm_file_start): Fix emission of
        Tag_ABI_VFP_args attribute.

2021-03-30  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/99824
        * stor-layout.c (set_min_and_max_values_for_integral_type):
        Assert the precision is within the bounds of
        WIDE_INT_MAX_PRECISION.
        * tree-ssa-sccvn.c (ao_ref_init_from_vn_reference): Use
        the outermost component ref only to lower the access size
        and initialize that from the access type.

2021-03-30  Richard Sandiford  <richard.sandiford@arm.com>

        PR target/98136
        * config/aarch64/aarch64.md (mov<mode>): Pass multi-instruction
        CONST_INTs to aarch64_expand_mov_immediate when called after RA.

2021-03-30  Mihailo Stojanovic  <mihailo.stojanovic@typhoon-hil.com>

        * config/aarch64/aarch64.md
        (<optab>_trunc<fcvt_target><GPI:mode>2): Set the "arch"
        attribute to disambiguate between SIMD and FP variants of the
        instruction.

2021-03-29  Jan Hubicka  <hubicka@ucw.cz>

        * ipa-modref.c (merge_call_lhs_flags): Correct handling of deref.
        (analyze_ssa_name_flags): Fix typo in comment.

2021-03-29  Alex Coplan  <alex.coplan@arm.com>

        PR target/99216
        * config/aarch64/aarch64-sve-builtins.cc
        (function_builder::add_function): Add placeholder_p argument, use
        placeholder decls if this is set.
        (function_builder::add_unique_function): Instead of conditionally adding
        direct overloads, unconditionally add either a direct overload or a
        placeholder.
        (function_builder::add_overloaded_function): Set placeholder_p if we're
        using C++ overloads. Use the obstack for string storage instead
        of relying on the tree nodes.
        (function_builder::add_overloaded_functions): Don't return early for
        m_direct_overloads: we need to add placeholders.
        * config/aarch64/aarch64-sve-builtins.h
        (function_builder::add_function): Add placeholder_p argument.

2021-03-29  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/99807
        * tree-vect-slp.c (vect_slp_analyze_node_operations_1): Move
        assert below VEC_PERM handling.

2021-03-29  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        PR target/99037
        * config/aarch64/aarch64-simd.md (move_lo_quad_internal_<mode>): Use
        aarch64_simd_or_scalar_imm_zero to match zeroes.  Remove pattern
        matching const_int 0.
        (move_lo_quad_internal_be_<mode>): Likewise.
        (move_lo_quad_<mode>): Update for the above.
        * config/aarch64/iterators.md (VQ_2E): Delete.

2021-03-29  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/99777
        * fold-const.c (extract_muldiv_1): For conversions, punt on casts from
        types other than scalar integral types.

2021-03-28  David Edelsohn  <dje.gcc@gmail.com>

        * config/rs6000/rs6000.c (rs6000_output_dwarf_dtprel): Do not add
        XCOFF TLS reloc decorations.

2021-03-28  Gerald Pfeifer  <gerald@pfeifer.com>

        * doc/analyzer.texi (Analyzer Internals): Update link to
        "A Memory Model for Static Analysis of C Programs".

2021-03-26  David Edelsohn  <dje.gcc@gmail.com>

        * config/rs6000/aix.h (ADJUST_FIELD_ALIGN): Call function.
        * config/rs6000/rs6000-protos.h (rs6000_special_adjust_field_align):
        Declare.
        * config/rs6000/rs6000.c (rs6000_special_adjust_field_align): New.
        (rs6000_special_round_type_align): Recursively check innermost first
        field.

2021-03-26  Jakub Jelinek  <jakub@redhat.com>

        PR debug/99334
        * dwarf2out.h (struct dw_fde_node): Add rule18 member.
        * dwarf2cfi.c (dwarf2out_frame_debug_expr): When handling (set hfp sp)
        assignment with drap_reg active, queue reg save for hfp with offset 0
        and flush queued reg saves.  When handling a push with rule18,
        defer queueing reg save for hfp and just assert the offset is 0.
        (scan_trace): Assert that fde->rule18 is false.

2021-03-26  Vladimir Makarov  <vmakarov@redhat.com>

        PR target/99766
        * ira-costs.c (record_reg_classes): Put case with
        CT_RELAXED_MEMORY adjacent to one with CT_MEMORY.
        * ira.c (ira_setup_alts): Ditto.
        * lra-constraints.c (process_alt_operands): Ditto.
        * recog.c (asm_operand_ok): Ditto.
        * reload.c (find_reloads): Ditto.

2021-03-26  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64-protos.h
        (cpu_addrcost_table::post_modify_ld3_st3): New member variable.
        (cpu_addrcost_table::post_modify_ld4_st4): Likewise.
        * config/aarch64/aarch64.c (generic_addrcost_table): Update
        accordingly, using the same costs as for post_modify.
        (exynosm1_addrcost_table, xgene1_addrcost_table): Likewise.
        (thunderx2t99_addrcost_table, thunderx3t110_addrcost_table):
        (tsv110_addrcost_table, qdf24xx_addrcost_table): Likewise.
        (a64fx_addrcost_table): Likewise.
        (neoversev1_addrcost_table): New.
        (neoversev1_tunings): Use neoversev1_addrcost_table.
        (aarch64_address_cost): Use the new post_modify costs for CImode
        and XImode.

2021-03-26  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64.opt
        (-param=aarch64-loop-vect-issue-rate-niters=): New parameter.
        * doc/invoke.texi: Document it.
        * config/aarch64/aarch64-protos.h (aarch64_base_vec_issue_info)
        (aarch64_scalar_vec_issue_info, aarch64_simd_vec_issue_info)
        (aarch64_advsimd_vec_issue_info, aarch64_sve_vec_issue_info)
        (aarch64_vec_issue_info): New structures.
        (cpu_vector_cost): Write comments above the variables rather
        than to the side.
        (cpu_vector_cost::issue_info): New member variable.
        * config/aarch64/aarch64.c: Include gimple-pretty-print.h
        and tree-ssa-loop-niter.h.
        (generic_vector_cost, a64fx_vector_cost, qdf24xx_vector_cost)
        (thunderx_vector_cost, tsv110_vector_cost, cortexa57_vector_cost)
        (exynosm1_vector_cost, xgene1_vector_cost, thunderx2t99_vector_cost)
        (thunderx3t110_vector_cost): Initialize issue_info to null.
        (neoversev1_scalar_issue_info, neoversev1_advsimd_issue_info)
        (neoversev1_sve_issue_info, neoversev1_vec_issue_info): New structures.
        (neoversev1_vector_cost): Use them.
        (aarch64_vec_op_count, aarch64_sve_op_count): New structures.
        (aarch64_vector_costs::saw_sve_only_op): New member variable.
        (aarch64_vector_costs::num_vector_iterations): Likewise.
        (aarch64_vector_costs::scalar_ops): Likewise.
        (aarch64_vector_costs::advsimd_ops): Likewise.
        (aarch64_vector_costs::sve_ops): Likewise.
        (aarch64_vector_costs::seen_loads): Likewise.
        (aarch64_simd_vec_costs_for_flags): New function.
        (aarch64_analyze_loop_vinfo): Initialize num_vector_iterations.
        Count the number of predicate operations required by SVE WHILE
        instructions.
        (aarch64_comparison_type, aarch64_multiply_add_p): New functions.
        (aarch64_sve_only_stmt_p, aarch64_in_loop_reduction_latency): Likewise.
        (aarch64_count_ops): Likewise.
        (aarch64_add_stmt_cost): Record whether see an SVE operation
        that cannot currently be implementing using Advanced SIMD.
        Record issue information about the scalar, Advanced SIMD
        and (where relevant) SVE versions of a loop.
        (aarch64_vec_op_count::dump): New function.
        (aarch64_sve_op_count::dump): Likewise.
        (aarch64_estimate_min_cycles_per_iter): Likewise.
        (aarch64_adjust_body_cost): If issue information is available,
        try to compare the issue rates of the various loop implementations
        and increase or decrease the vector body cost accordingly.

2021-03-26  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64.c (aarch64_detect_vector_stmt_subtype):
        Assume a zero cost for induction phis.

2021-03-26  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64.c (aarch64_embedded_comparison_type): New
        function.
        (aarch64_adjust_stmt_cost): Add the costs of embedded scalar and
        vector comparisons.

2021-03-26  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64.c (aarch64_detect_scalar_stmt_subtype):
        New function.
        (aarch64_add_stmt_cost): Call it.

2021-03-26  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64-tuning-flags.def (matched_vector_throughput):
        New tuning parameter.
        * config/aarch64/aarch64.c (neoversev1_tunings): Use it.
        (aarch64_estimated_sve_vq): New function.
        (aarch64_vector_costs::analyzed_vinfo): New member variable.
        (aarch64_vector_costs::is_loop): Likewise.
        (aarch64_vector_costs::unrolled_advsimd_niters): Likewise.
        (aarch64_vector_costs::unrolled_advsimd_stmts): Likewise.
        (aarch64_record_potential_advsimd_unrolling): New function.
        (aarch64_analyze_loop_vinfo, aarch64_analyze_bb_vinfo): Likewise.
        (aarch64_add_stmt_cost): Call aarch64_analyze_loop_vinfo or
        aarch64_analyze_bb_vinfo on the first use of a costs structure.
        Detect whether we're vectorizing a loop for SVE that might be
        completely unrolled if it used Advanced SIMD instead.
        (aarch64_adjust_body_cost_for_latency): New function.
        (aarch64_finish_cost): Call it.

2021-03-26  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64.c (aarch64_vector_costs): New structure.
        (aarch64_init_cost): New function.
        (aarch64_add_stmt_cost): Use aarch64_vector_costs instead of
        the default unsigned[3].
        (aarch64_finish_cost, aarch64_destroy_cost_data): New functions.
        (TARGET_VECTORIZE_INIT_COST): Override.
        (TARGET_VECTORIZE_FINISH_COST): Likewise.
        (TARGET_VECTORIZE_DESTROY_COST_DATA): Likewise.

2021-03-26  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64.c (neoversev1_advsimd_vector_cost)
        (neoversev1_sve_vector_cost): New cost structures.
        (neoversev1_vector_cost): Likewise.
        (neoversev1_tunings): Use them.  Enable use_new_vector_costs.

2021-03-26  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64-protos.h
        (sve_vec_cost::scatter_store_elt_cost): New member variable.
        * config/aarch64/aarch64.c (generic_sve_vector_cost): Update
        accordingly, taking the cost from the cost of a scalar_store.
        (a64fx_sve_vector_cost): Likewise.
        (aarch64_detect_vector_stmt_subtype): Detect scatter stores.

2021-03-26  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64-protos.h
        (simd_vec_cost::store_elt_extra_cost): New member variable.
        * config/aarch64/aarch64.c (generic_advsimd_vector_cost): Update
        accordingly, using the vec_to_scalar cost for the new field.
        (generic_sve_vector_cost, a64fx_advsimd_vector_cost): Likewise.
        (a64fx_sve_vector_cost, qdf24xx_advsimd_vector_cost): Likewise.
        (thunderx_advsimd_vector_cost, tsv110_advsimd_vector_cost): Likewise.
        (cortexa57_advsimd_vector_cost, exynosm1_advsimd_vector_cost)
        (xgene1_advsimd_vector_cost, thunderx2t99_advsimd_vector_cost)
        (thunderx3t110_advsimd_vector_cost): Likewise.
        (aarch64_detect_vector_stmt_subtype): Detect single-element stores.

2021-03-26  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64-protos.h (simd_vec_cost::ld2_st2_permute_cost)
        (simd_vec_cost::ld3_st3_permute_cost): New member variables.
        (simd_vec_cost::ld4_st4_permute_cost): Likewise.
        * config/aarch64/aarch64.c (generic_advsimd_vector_cost): Update
        accordingly, using zero for the new costs.
        (generic_sve_vector_cost, a64fx_advsimd_vector_cost): Likewise.
        (a64fx_sve_vector_cost, qdf24xx_advsimd_vector_cost): Likewise.
        (thunderx_advsimd_vector_cost, tsv110_advsimd_vector_cost): Likewise.
        (cortexa57_advsimd_vector_cost, exynosm1_advsimd_vector_cost)
        (xgene1_advsimd_vector_cost, thunderx2t99_advsimd_vector_cost)
        (thunderx3t110_advsimd_vector_cost): Likewise.
        (aarch64_ld234_st234_vectors): New function.
        (aarch64_adjust_stmt_cost): Likewise.
        (aarch64_add_stmt_cost): Call aarch64_adjust_stmt_cost if using
        the new vector costs.

2021-03-26  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64-protos.h (sve_vec_cost): Turn into a
        derived class of simd_vec_cost.  Add information about CLAST[AB]
        and FADDA instructions.
        * config/aarch64/aarch64.c (generic_sve_vector_cost): Update
        accordingly, using the vec_to_scalar costs for the new fields.
        (a64fx_sve_vector_cost): Likewise.
        (aarch64_reduc_type): New function.
        (aarch64_sve_in_loop_reduction_latency): Likewise.
        (aarch64_detect_vector_stmt_subtype): Take a vinfo parameter.
        Use aarch64_sve_in_loop_reduction_latency to handle SVE reductions
        that occur in the loop body.
        (aarch64_add_stmt_cost): Update call accordingly.

2021-03-26  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64-tuning-flags.def (use_new_vector_costs):
        New tuning flag.
        * config/aarch64/aarch64-protos.h (simd_vec_cost): Put comments
        above the fields rather than to the right.
        (simd_vec_cost::reduc_i8_cost): New member variable.
        (simd_vec_cost::reduc_i16_cost): Likewise.
        (simd_vec_cost::reduc_i32_cost): Likewise.
        (simd_vec_cost::reduc_i64_cost): Likewise.
        (simd_vec_cost::reduc_f16_cost): Likewise.
        (simd_vec_cost::reduc_f32_cost): Likewise.
        (simd_vec_cost::reduc_f64_cost): Likewise.
        * config/aarch64/aarch64.c (generic_advsimd_vector_cost): Update
        accordingly, using the vec_to_scalar_cost for the new fields.
        (generic_sve_vector_cost, a64fx_advsimd_vector_cost): Likewise.
        (a64fx_sve_vector_cost, qdf24xx_advsimd_vector_cost): Likewise.
        (thunderx_advsimd_vector_cost, tsv110_advsimd_vector_cost): Likewise.
        (cortexa57_advsimd_vector_cost, exynosm1_advsimd_vector_cost)
        (xgene1_advsimd_vector_cost, thunderx2t99_advsimd_vector_cost)
        (thunderx3t110_advsimd_vector_cost): Likewise.
        (aarch64_use_new_vector_costs_p): New function.
        (aarch64_simd_vec_costs): New function, split out from...
        (aarch64_builtin_vectorization_cost): ...here.
        (aarch64_is_reduction): New function.
        (aarch64_detect_vector_stmt_subtype): Likewise.
        (aarch64_add_stmt_cost): Call aarch64_detect_vector_stmt_subtype if
        using the new vector costs.

2021-03-26  Iain Buclaw  <ibuclaw@gdcproject.org>

        PR ipa/99466
        * tree-emutls.c (get_emutls_init_templ_addr): Mark initializer of weak
        TLS declarations as public.

2021-03-26  Iain Buclaw  <ibuclaw@gdcproject.org>

        * config/aarch64/aarch64-d.c (IN_TARGET_CODE): Define.
        * config/arm/arm-d.c (IN_TARGET_CODE): Likewise.
        * config/i386/i386-d.c (IN_TARGET_CODE): Likewise.
        * config/mips/mips-d.c (IN_TARGET_CODE): Likewise.
        * config/pa/pa-d.c (IN_TARGET_CODE): Likewise.
        * config/riscv/riscv-d.c (IN_TARGET_CODE): Likewise.
        * config/rs6000/rs6000-d.c (IN_TARGET_CODE): Likewise.
        * config/s390/s390-d.c (IN_TARGET_CODE): Likewise.
        * config/sparc/sparc-d.c (IN_TARGET_CODE): Likewise.

2021-03-26  Iain Buclaw  <ibuclaw@gdcproject.org>

        PR d/91595
        * config.gcc (*-*-cygwin*): Add winnt-d.o
        (*-*-mingw*): Likewise.
        * config/i386/cygwin.h (EXTRA_TARGET_D_OS_VERSIONS): New macro.
        * config/i386/mingw32.h (EXTRA_TARGET_D_OS_VERSIONS): Likewise.
        * config/i386/t-cygming: Add winnt-d.o.
        * config/i386/winnt-d.c: New file.

2021-03-26  Iain Buclaw  <ibuclaw@gdcproject.org>

        * config/freebsd-d.c: Include memmodel.h.

2021-03-26  Iain Buclaw  <ibuclaw@gdcproject.org>

        PR d/99691
        * config.gcc (*-*-openbsd*): Add openbsd-d.o.
        * config/t-openbsd: Add openbsd-d.o.
        * config/openbsd-d.c: New file.

2021-03-25  Stam Markianos-Wright  <stam.markianos-wright@arm.com>

        PR tree-optimization/96974
        * tree-vect-stmts.c (vect_get_vector_types_for_stmt): Replace assert
        with graceful exit.

2021-03-25  H.J. Lu  <hjl.tools@gmail.com>

        Revert:
        2021-03-25  H.J. Lu  <hjl.tools@gmail.com>

        PR target/98209
        PR target/99744
        * config/i386/i386.c (ix86_can_inline_p): Don't check ISA for
        always_inline in system headers.

2021-03-25  Kewen Lin  <linkw@linux.ibm.com>

        * tree-vect-loop.c (vect_model_reduction_cost): Init inside_cost.

2021-03-25  Jakub Jelinek  <jakub@redhat.com>

        PR c++/99565
        * tree-core.h (enum operand_equal_flag): Add OEP_ADDRESS_OF_SAME_FIELD.
        * fold-const.c (operand_compare::operand_equal_p): Don't compare
        field offsets if OEP_ADDRESS_OF_SAME_FIELD.

2021-03-25  H.J. Lu  <hjl.tools@gmail.com>

        PR target/98209
        PR target/99744
        * config/i386/i386.c (ix86_can_inline_p): Don't check ISA for
        always_inline in system headers.

2021-03-25  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/99746
        * tree-vect-slp-patterns.c (complex_pattern::build): Do not mark
        the scalar stmt as patterned.  Instead set up required things
        manually.

2021-03-25  Xionghu Luo  <luoxhu@linux.ibm.com>

        * config/rs6000/rs6000.c (power8_costs): Change l2 cache
        from 256 to 512.

2021-03-24  Martin Liska  <mliska@suse.cz>

        PR target/99753
        * common/config/i386/i386-common.c (ARRAY_SIZE): Fix off-by-one
        error.
        * config/i386/i386-options.c (ix86_option_override_internal):
        Add run-time assert.

2021-03-24  Martin Jambor  <mjambor@suse.cz>

        PR ipa/99122
        * ipa-cp.c (initialize_node_lattices): Mark as bottom all
        parameters with unknown type.
        (ipacp_value_safe_for_type): New function.
        (propagate_vals_across_arith_jfunc): Verify that the constant type
        can be used for a type of the formal parameter.
        (propagate_vals_across_ancestor): Likewise.
        (propagate_scalar_across_jump_function): Likewise.  Pass the type
        also to propagate_vals_across_ancestor.

2021-03-24  Christophe Lyon  <christophe.lyon@linaro.org>

        PR target/99727
        * config/arm/mve.md (movmisalign<mode>_mve_store): Use Ux
        constraint.
        (movmisalign<mode>_mve_load): Likewise.

2021-03-24  Jakub Jelinek  <jakub@redhat.com>

        PR target/99724
        * config/arm/vec-common.md (one_cmpl<mode>2, neg<mode>2,
        movmisalign<mode>): Disable expanders for TARGET_REALLY_IWMMXT.

2021-03-24  Alexandre Oliva  <oliva@adacore.com>

        * doc/sourcebuild.texi (sysconf): New effective target.

2021-03-24  Alexandre Oliva  <oliva@adacore.com>

        * config/i386/predicates.md (reg_or_const_vec_operand): New.
        * config/i386/sse.md (ssse3_pshufbv8qi3): Add an expander for
        the now *-prefixed insn_and_split, turn the splitter const vec
        into an input for the insn, making it an ignored immediate for
        non-split cases, and loaded into the scratch register
        otherwise.

2021-03-23  Vladimir N. Makarov  <vmakarov@redhat.com>

        PR target/99581
        * config/aarch64/constraints.md (Utq, UOb, UOh, UOw, UOd, UOty):
        Use define_relaxed_memory_constraint for them.

2021-03-23  Iain Sandoe  <iain@sandoe.co.uk>

        PR target/99733
        * config/host-darwin.c (darwin_gt_pch_use_address): Add a
        colon to the diagnostic message.

2021-03-23  Ilya Leoshkevich  <iii@linux.ibm.com>

        * fwprop.c (fwprop_propagation::fwprop_propagation): Look at
        set_info's uses.
        (try_fwprop_subst_note): Use set_info instead of insn_info.
        (try_fwprop_subst_pattern): Likewise.
        (try_fwprop_subst_notes): Likewise.
        (try_fwprop_subst): Likewise.
        (forward_propagate_subreg): Likewise.
        (forward_propagate_and_simplify): Likewise.
        (forward_propagate_into): Likewise.
        * rtl-ssa/accesses.h (set_info::single_nondebug_use) New
        method.
        (set_info::single_nondebug_insn_use): Likewise.
        (set_info::single_phi_use): Likewise.
        * rtl-ssa/member-fns.inl (set_info::single_nondebug_use) New
        method.
        (set_info::single_nondebug_insn_use): Likewise.
        (set_info::single_phi_use): Likewise.

2021-03-23  Christophe Lyon  <christophe.lyon@linaro.org>

        * doc/sourcebuild.texi (arm_dsp_ok, arm_dsp): Document.

2021-03-23  Jakub Jelinek  <jakub@redhat.com>

        PR target/99540
        * config/aarch64/aarch64.c (aarch64_add_offset): Tell
        expand_mult to perform an unsigned rather than a signed
        multiplication.

2021-03-23  H.J. Lu  <hjl.tools@gmail.com>

        PR target/99704
        * config/i386/cpuid.h (__cpuid): Add __volatile__.
        (__cpuid_count): Likewise.

2021-03-23  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/99721
        * tree-vect-slp.c (vect_slp_analyze_node_operations):
        Make sure we can schedule the node.

2021-03-23  Marcus Comstedt  <marcus@mc.pp.se>

        * config/riscv/riscv.c (riscv_subword): Take endianness into
        account when calculating the byte offset.

2021-03-23  Marcus Comstedt  <marcus@mc.pp.se>

        * config/riscv/predicates.md (subreg_lowpart_operator): New predicate
        * config/riscv/riscv.md (*addsi3_extended2, *subsi3_extended2)
        (*negsi2_extended2, *mulsi3_extended2, *<optab>si3_mask)
        (*<optab>si3_mask_1, *<optab>di3_mask, *<optab>di3_mask_1)
        (*<optab>si3_extend_mask, *<optab>si3_extend_mask_1): Use
        new predicate "subreg_lowpart_operator"

2021-03-23  Marcus Comstedt  <marcus@mc.pp.se>

        * config/riscv/riscv.c (riscv_swap_instruction): New function
        to byteswap an SImode rtx containing an instruction.
        (riscv_trampoline_init): Byteswap the generated instructions
        when needed.

2021-03-23  Marcus Comstedt  <marcus@mc.pp.se>

        * common/config/riscv/riscv-common.c
        (TARGET_DEFAULT_TARGET_FLAGS): Set default endianness.
        * config.gcc (riscv32be-*, riscv64be-*): Set
        TARGET_BIG_ENDIAN_DEFAULT to 1.
        * config/riscv/elf.h (LINK_SPEC): Change -melf* value
        depending on default endianness.
        * config/riscv/freebsd.h (LINK_SPEC): Likewise.
        * config/riscv/linux.h (LINK_SPEC): Likewise.
        * config/riscv/riscv.c (TARGET_DEFAULT_TARGET_FLAGS): Set
        default endianness.
        * config/riscv/riscv.h (DEFAULT_ENDIAN_SPEC): New macro.

2021-03-23  Marcus Comstedt  <marcus@mc.pp.se>

        * config/riscv/elf.h (LINK_SPEC): Pass linker endianness flag.
        * config/riscv/freebsd.h (LINK_SPEC): Likewise.
        * config/riscv/linux.h (LINK_SPEC): Likewise.
        * config/riscv/riscv.h (ASM_SPEC): Pass -mbig-endian and
        -mlittle-endian.
        (BYTES_BIG_ENDIAN): Handle big endian.
        (WORDS_BIG_ENDIAN): Define to BYTES_BIG_ENDIAN.
        * config/riscv/riscv.opt (-mbig-endian, -mlittle-endian): New
        options.
        * doc/invoke.texi (-mbig-endian, -mlittle-endian): Document.

2021-03-23  Stefan Schulze Frielinghaus  <stefansf@linux.ibm.com>

        * regcprop.c (find_oldest_value_reg): Ask target whether
          different mode is fine for replacement register.

2021-03-23  Aldy Hernandez  <aldyh@redhat.com>

        PR tree-optimization/99296
        * value-range.cc (irange::irange_set_1bit_anti_range): New.
        (irange::irange_set_anti_range): Call irange_set_1bit_anti_range
        * value-range.h (irange::irange_set_1bit_anti_range): New.

2021-03-22  Vladimir N. Makarov  <vmakarov@redhat.com>

        PR target/99581
        * config/aarch64/constraints.md (UtQ): Use
        define_relaxed_memory_constraint for it.
        * doc/md.texi (define_relaxed_memory_constraint): Describe it.
        * genoutput.c (main): Process DEFINE_RELAXED_MEMORY_CONSTRAINT.
        * genpreds.c (constraint_data): Add bitfield is_relaxed_memory.
        (have_relaxed_memory_constraints): New static var.
        (relaxed_memory_start, relaxed_memory_end): Ditto.
        (add_constraint): Add arg is_relaxed_memory.  Check name for
        relaxed memory.  Set up is_relaxed_memory in constraint_data and
        have_relaxed_memory_constraints.  Adjust calls.
        (choose_enum_order): Process relaxed memory.
        (write_tm_preds_h): Ditto.
        (main): Process DEFINE_RELAXED_MEMORY_CONSTRAINT.
        * gensupport.c (process_rtx): Process DEFINE_RELAXED_MEMORY_CONSTRAINT.
        * ira-costs.c (record_reg_classes): Process CT_RELAXED_MEMORY.
        * ira-lives.c (single_reg_class): Use
        insn_extra_relaxed_memory_constraint.
        * ira.c (ira_setup_alts): CT_RELAXED_MEMORY.
        * lra-constraints.c (valid_address_p): Use
        insn_extra_relaxed_memory_constraint instead of other memory
        constraints.
        (process_alt_operands): Process CT_RELAXED_MEMORY.
        (curr_insn_transform): Use insn_extra_relaxed_memory_constraint.
        * recog.c (asm_operand_ok, preprocess_constraints): Process
        CT_RELAXED_MEMORY.
        * reload.c (find_reloads): Ditto.
        * rtl.def (DEFINE_RELAXED_MEMORY_CONSTRAINT): New.
        * stmt.c (parse_input_constraint): Use
        insn_extra_relaxed_memory_constraint.

2021-03-22  Segher Boessenkool  <segher@kernel.crashing.org>

        PR target/97926
        * ubsan.c (ubsan_instrument_float_cast): Don't test for unordered if
        there are no NaNs.

2021-03-22  Alex Coplan  <alex.coplan@arm.com>

        PR target/97252
        * config/arm/arm-protos.h (neon_make_constant): Add generate
        argument to guard emitting insns, default to true.
        * config/arm/arm.c (arm_legitimate_constant_p_1): Reject
        CONST_VECTORs which neon_make_constant can't handle.
        (neon_vdup_constant): Add generate argument, avoid emitting
        insns if it's not set.
        (neon_make_constant): Plumb new generate argument through.
        * config/arm/constraints.md (Ui): New. Use it...
        * config/arm/mve.md (*mve_mov<mode>): ... here.
        * config/arm/vec-common.md (movv8hf): Use neon_make_constant to
        synthesize constants.

2021-03-22  Richard Biener  <rguenther@suse.de>

        * debug.h: Add deprecation warning.

2021-03-22  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/99694
        * tree-ssa-sccvn.c (visit_phi): Ignore edges with the
        PHI result.

2021-03-22  Kito Cheng  <kito.cheng@sifive.com>

        PR target/99702
        * config/riscv/riscv.c (riscv_expand_block_move): Get RTL value
        after type checking.

2021-03-22  Jakub Jelinek  <jakub@redhat.com>

        PR debug/99562
        PR debug/66728
        * dwarf2out.c (get_full_len): Use get_precision rather than
        min_precision.
        (add_const_value_attribute): Make sure add_AT_wide argument has
        precision prec rather than some very wide one.

2021-03-22  Kewen Lin  <linkw@linux.ibm.com>

        * config/rs6000/rs6000.md (*rotldi3_insert_sf,
        *mov<SFDF:mode><SFDF2:mode>cc_p9, floatsi<mode>2_lfiwax,
        floatsi<mode>2_lfiwax_mem, floatunssi<mode>2_lfiwzx,
        floatunssi<mode>2_lfiwzx_mem, *floatsidf2_internal,
        *floatunssidf2_internal, fix_trunc<mode>si2_stfiwx,
        fix_trunc<mode>si2_internal, fixuns_trunc<mode>si2_stfiwx,
        *round32<mode>2_fprs, *roundu32<mode>2_fprs,
        *fix_trunc<mode>si2_internal): Fix empty split condition.
        * config/rs6000/vsx.md (*vsx_le_undo_permute_<mode>,
        vsx_reduc_<VEC_reduc_name>_v2df, vsx_reduc_<VEC_reduc_name>_v4sf,
        *vsx_reduc_<VEC_reduc_name>_v2df_scalar,
        *vsx_reduc_<VEC_reduc_name>_v4sf_scalar): Likewise.

2021-03-22  Xionghu Luo  <luoxhu@linux.ibm.com>

        PR target/98914
        * config/rs6000/rs6000.c (rs6000_expand_vector_set_var_p9):
        Convert idx to DImode.
        (rs6000_expand_vector_set_var_p8): Likewise.

2021-03-21  Jakub Jelinek  <jakub@redhat.com>

        PR debug/99388
        * dwarf2out.c (insert_float): Change return type from void to
        unsigned, handle GET_MODE_SIZE (mode) == 2 and return element size.
        (mem_loc_descriptor, loc_descriptor, add_const_value_attribute):
        Adjust callers.

2021-03-20  H.J. Lu  <hjl.tools@gmail.com>

        PR target/99679
        * config/i386/i386.c (construct_container): Check cfun != NULL
        before accessing silent_p.

2021-03-20  Ahamed Husni  <ahamedhusni73@gmail.com>

        * asan.c: Fix typos in comments.

2021-03-20  Vladimir N. Makarov  <vmakarov@redhat.com>

        PR rtl-optimization/99680
        * lra-constraints.c (skip_contraint_modifiers): Rename to skip_constraint_modifiers.
        (process_address_1): Check empty constraint before using
        CONSTRAINT_LEN.

2021-03-19  Pat Haugen  <pthaugen@linux.ibm.com>

        * config/rs6000/rs6000.c (power10_cost): New.
        (rs6000_option_override_internal): Set Power10 costs.
        (rs6000_issue_rate): Set Power10 issue rate.
        * config/rs6000/power10.md: Rewrite for Power10.

2021-03-19  Vladimir N. Makarov  <vmakarov@redhat.com>

        PR target/99663
        * lra-constraints.c (process_address_1): Don't use unknown
        constraint for address constraint.

2021-03-19  Iain Sandoe  <iain@sandoe.co.uk>

        PR target/99661
        * config.gcc (powerpc-*-darwin8): Delete the reference to
        the now removed darwin8.h.

2021-03-19  Olivier Hainque  <hainque@adacore.com>

        PR target/99660
        * config/vxworksae.h (VX_CPU_PREFIX): Define.

2021-03-19  John David Anglin  <danglin@gcc.gnu.org>

        * config/pa/pa.c (import_milli): Use memcpy instead of strncpy.

2021-03-19  Tamar Christina  <tamar.christina@arm.com>

        PR tree-optimization/99656
        * tree-vect-slp-patterns.c (linear_loads_p,
        complex_add_pattern::matches, is_eq_or_top,
        vect_validate_multiplication, complex_mul_pattern::matches,
        complex_fms_pattern::matches): Remove complex_perm_kinds_t.
        * tree-vectorizer.h: (complex_load_perm_t): Removed.
        (slp_tree_to_load_perm_map_t): Use complex_perm_kinds_t instead of
        complex_load_perm_t.

2021-03-19  H.J. Lu  <hjl.tools@gmail.com>

        PR target/99652
        * config/i386/i386-options.c (ix86_init_machine_status): Set
        silent_p to true.
        * config/i386/i386.c (init_cumulative_args): Set silent_p to
        false.
        (construct_container): Return early for return and argument
        errors if silent_p is true.
        * config/i386/i386.h (machine_function): Add silent_p.

2021-03-19  Jakub Jelinek  <jakub@redhat.com>

        PR target/99593
        * config/arm/constraints.md (Ds): New constraint.
        * config/arm/vec-common.md (mve_vshlq_<supf><mode>): Use w,Ds
        constraint instead of w,Dm.

2021-03-19  Andrew Stubbs  <ams@codesourcery.com>

        * config/gcn/gcn.c (gcn_parse_amdgpu_hsa_kernel_attribute): Fix quotes
        in error message.

2021-03-19  Eric Botcazou  <ebotcazou@adacore.com>

        PR middle-end/99641
        * fold-const.c (native_encode_initializer) <CONSTRUCTOR>: For an
        array type, do the computation of the current position in sizetype.

2021-03-18  Vladimir N. Makarov  <vmakarov@redhat.com>

        PR target/99422
        * lra-constraints.c (process_address_1): Use lookup_constraint
        only for a single constraint.

2021-03-18  Martin Sebor  <msebor@redhat.com>

        PR middle-end/99502
        * gimple-array-bounds.cc (inbounds_vbase_memaccess_p): Rename...
        (inbounds_memaccess_p): ...to this.  Check the ending offset of
        the accessed member.

2021-03-18  Andrew Stubbs  <ams@codesourcery.com>

        * config/gcn/gcn.c (gcn_parse_amdgpu_hsa_kernel_attribute): Add %< and
          %> quote markers to error messages.
        (gcn_goacc_validate_dims): Likewise.
        (gcn_conditional_register_usage): Remove exclaimation mark from error
        message.
        (gcn_vectorize_vec_perm_const): Ensure perm is fully uninitialized.

2021-03-18  Jan Hubicka  <hubicka@ucw.cz>

        * config/i386/x86-tune-costs.h (struct processor_costs): Fix costs of
        integer divides1.

2021-03-18  Sinan Lin  <sinan@isrc.iscas.ac.cn>
            Kito Cheng  <kito.cheng@sifive.com>

        * config/riscv/riscv.c (riscv_block_move_straight): Change type
        to unsigned HOST_WIDE_INT for parameter and local variable with
        HOST_WIDE_INT type.
        (riscv_adjust_block_mem): Ditto.
        (riscv_block_move_loop): Ditto.
        (riscv_expand_block_move): Ditto.

2021-03-18  Nick Clifton  <nickc@redhat.com>

        * config/v850/v850.c (construct_restore_jr): Increase static
         buffer size.
        (construct_save_jarl): Likewise.
        * config/v850/v850.h (DWARF2_DEBUGGING_INFO): Define.

2021-03-18  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64.c (aarch64_adjust_generic_arch_tuning): Define.
        (aarch64_override_options_internal): Use it.
        (generic_tunings): Add AARCH64_EXTRA_TUNE_CSE_SVE_VL_CONSTANTS to
        tune_flags.

2021-03-17  Sandra Loosemore  <sandra@codesourcery.com>

        * config/nios2/nios2.c (nios2_custom_check_insns): Clean up
        error message format issues.
        (nios2_option_override): Likewise.
        (nios2_expand_fpu_builtin): Likewise.
        (nios2_init_custom_builtins): Adjust to avoid bogus strncpy
        truncation warning.
        (nios2_expand_custom_builtin): More error message format fixes.
        (nios2_expand_rdwrctl_builtin): Likewise.
        (nios2_expand_rdprs_builtin): Likewise.
        (nios2_expand_eni_builtin): Likewise.
        (nios2_expand_builtin): Likewise.
        (nios2_register_custom_code): Likewise.
        (nios2_valid_target_attribute_rec): Likewise.
        (nios2_add_insn_asm): Fix uninitialized variable warning.

2021-03-17  Jan Hubicka  <jh@suse.cz>

        * config/i386/x86-tune-costs.h (struct processor_costs): Update costs
        of gather to match reality.
        * config/i386/x86-tune.def (X86_TUNE_USE_GATHER): Enable for znver3.

2021-03-17  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-builtins.c (aarch64_expand_rng_builtin): Use EQ
        to compare against CC_REG rather than NE.

2021-03-17  H.J. Lu  <hjl.tools@gmail.com>

        PR target/99504
        * config/i386/i386.c (ix86_force_load_from_GOT_p): Support
        inline assembly statements.
        (ix86_print_operand): Update 'P' handling for -fno-plt.

2021-03-17  Tamar Christina  <tamar.christina@arm.com>

        PR target/99542
        * config/aarch64/aarch64.c
        (aarch64_simd_clone_compute_vecsize_and_simdlen): Remove unused var.

2021-03-16  Segher Boessenkool  <segher@kernel.crashing.org>

        PR target/98092
        * config/rs6000/predicates.md (branch_comparison_operator): Allow
        ordered and unordered for CCFPmode, if flag_finite_math_only.

2021-03-16  Jakub Jelinek  <jakub@redhat.com>

        PR target/99600
        * config/i386/i386-expand.c (ix86_split_lea_for_addr): Emit a MULT
        rather than ASHIFT.
        * config/i386/i386.md (mult by 1248 into ashift): New splitter.

2021-03-16  Martin Liska  <mliska@suse.cz>

        PR target/99592
        * optc-save-gen.awk: Add flag_ipa_ra to exceptions for
        cl_optimization_compare function.

2021-03-16  Ilya Leoshkevich  <iii@linux.ibm.com>

        * config/s390/s390.c (f_constraint_p): Treat "fv" constraints
        as "v".

2021-03-16  Jakub Jelinek  <jakub@redhat.com>

        PR target/99563
        * config/i386/i386.h (struct machine_function): Add
        has_explicit_vzeroupper bitfield.
        * config/i386/i386-expand.c (ix86_expand_builtin): Set
        cfun->machine->has_explicit_vzeroupper when expanding
        IX86_BUILTIN_VZEROUPPER.
        * config/i386/i386-features.c (rest_of_handle_insert_vzeroupper):
        Do the mode switching only when TARGET_VZEROUPPER, expensive
        optimizations turned on and not optimizing for size.
        (pass_insert_vzeroupper::gate): Enable even when
        cfun->machine->has_explicit_vzeroupper is set.

2021-03-16  Jakub Jelinek  <jakub@redhat.com>

        PR target/99542
        * config/aarch64/aarch64.c
        (aarch64_simd_clone_compute_vecsize_and_simdlen): If not a function
        definition, walk TYPE_ARG_TYPES list if non-NULL for argument types
        instead of DECL_ARGUMENTS.  Ignore types for uniform arguments.

2021-03-15  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98834
        * tree-ssa-sccvn.c (vn_reference_lookup_3): Handle missing
        subsetting by truncating the access size.

2021-03-15  Jan Hubicka  <hubicka@ucw.cz>

        * config/i386/i386-options.c (processor_cost_table): Add znver3_cost.
        * config/i386/x86-tune-costs.h (znver3_cost): New gobal variable; copy
        of znver2_cost.

2021-03-15  Martin Liska  <mliska@suse.cz>

        * spellcheck.c: Add missing comma in initialization.

2021-03-14  Uroš Bizjak  <ubizjak@gmail.com>

        * config/i386/sse.md (*vec_extract<mode>): Merge alternative 0 with
        alternative 2 and alternative 1 with alternative 3 using
        YW register constraint.
        (*vec_extract<PEXTR_MODE12:mode>_zext): Merge alternatives
        using YW register constraint.
        (*vec_extractv16qi_zext): Ditto.
        (*vec_extractv4si): Merge alternatives 4 and 5
        using Yw register constraint.
        (*ssse3_palignr<mode>_perm): Use Yw instead of v for alternative 3.

2021-03-13  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/99489
        * builtins.c (gimple_call_alloc_size): Fail gracefully when argument
        is not a call statement.

2021-03-13  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/99544
        * match.pd (X + (X << C) -> X * (1 + (1 << C))): Don't simplify
        if for vector types multiplication can't be done in type's mode.

2021-03-12  Eric Botcazou  <ebotcazou@adacore.com>

        PR target/99422
        * config/sparc/constraints.md (w): Rename to...
        (W): ... this and ditch previous implementation.
        * config/sparc/sparc.md (*movdi_insn_sp64): Replace W with m.
        (*movdf_insn_sp64): Likewise.
        (*mov<VM64:mode>_insn_sp64): Likewise.
        * config/sparc/sync.md (*atomic_compare_and_swap<mode>_1): Replace
        w with W.
        (atomic_compare_and_swap_leon3_1): Likewise.
        (*atomic_compare_and_swapdi_v8plus): Likewise.
        * config/sparc/sparc.c (memory_ok_for_ldd): Remove useless test on
        architecture and add missing address validity check during LRA.

2021-03-12  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/98858
        * gimplify.c (omp_add_variable): Handle NULL_TREE as size
        occuring for assumed-size arrays in use_device_{ptr,addr}.

2021-03-12  Jakub Jelinek  <jakub@redhat.com>

        PR target/99321
        * config/i386/constraints.md (YW): New internal constraint.
        * config/i386/sse.md (v_Yw): Add V4TI, V2TI, V1TI and TI cases.
        (*<sse2_avx2>_<insn><mode>3<mask_name>,
        *<sse2_avx2>_uavg<mode>3<mask_name>, *abs<mode>2,
        *<s>mul<mode>3_highpart<mask_name>): Use <v_Yw> instead of v in
        constraints.
        (<sse2_avx2>_psadbw): Use YW instead of v in constraints.
        (*avx2_pmaddwd, *sse2_pmaddwd, *<code>v8hi3, *<code>v16qi3,
        avx2_pmaddubsw256, ssse3_pmaddubsw128): Merge last two alternatives
        into one, use Yw instead of former x,v.
        (ashr<mode>3, <insn><mode>3): Use <v_Yw> instead of x in constraints of
        the last alternative.
        (<sse2_avx2>_packsswb<mask_name>, <sse2_avx2>_packssdw<mask_name>,
        <sse2_avx2>_packuswb<mask_name>, <sse4_1_avx2>_packusdw<mask_name>,
        *<ssse3_avx2>_pmulhrsw<mode>3<mask_name>, <ssse3_avx2>_palignr<mode>,
        <ssse3_avx2>_pshufb<mode>3<mask_name>): Merge last two alternatives
        into one, use <v_Yw> instead of former x,v.
        (avx2_interleave_highv32qi<mask_name>,
        vec_interleave_highv16qi<mask_name>): Use Yw instead of v in
        constraints.  Add && <mask_avx512bw_condition> to condition.
        (avx2_interleave_lowv32qi<mask_name>,
        vec_interleave_lowv16qi<mask_name>,
        avx2_interleave_highv16hi<mask_name>,
        vec_interleave_highv8hi<mask_name>,
        avx2_interleave_lowv16hi<mask_name>, vec_interleave_lowv8hi<mask_name>,
        avx2_pshuflw_1<mask_name>, sse2_pshuflw_1<mask_name>,
        avx2_pshufhw_1<mask_name>, sse2_pshufhw_1<mask_name>,
        avx2_<code>v16qiv16hi2<mask_name>, sse4_1_<code>v8qiv8hi2<mask_name>,
        *sse4_1_<code>v8qiv8hi2<mask_name>_1, <sse2_avx2>_<insn><mode>3): Use
        Yw instead of v in constraints.
        * config/i386/mmx.md (Yv_Yw): New define_mode_attr.
        (*mmx_<insn><mode>3, mmx_ashr<mode>3, mmx_<insn><mode>3): Use <Yv_Yw>
        instead of Yv in constraints.
        (*mmx_<insn><mode>3, *mmx_mulv4hi3, *mmx_smulv4hi3_highpart,
        *mmx_umulv4hi3_highpart, *mmx_pmaddwd, *mmx_<code>v4hi3,
        *mmx_<code>v8qi3, mmx_pack<s_trunsuffix>swb, mmx_packssdw,
        mmx_punpckhbw, mmx_punpcklbw, mmx_punpckhwd, mmx_punpcklwd,
        *mmx_uavgv8qi3, *mmx_uavgv4hi3, mmx_psadbw): Use Yw instead of Yv in
        constraints.
        (*mmx_pinsrw, *mmx_pinsrb, *mmx_pextrw, *mmx_pextrw_zext, *mmx_pextrb,
        *mmx_pextrb_zext): Use YW instead of Yv in constraints.
        (*mmx_eq<mode>3, mmx_gt<mode>3): Use x instead of Yv in constraints.
        (mmx_andnot<mode>3, *mmx_<code><mode>3): Split last alternative into
        two, one with just x, another isa avx512vl with v.

2021-03-12  Martin Liska  <mliska@suse.cz>

        * doc/invoke.texi: Add missing param documentation.

2021-03-11  David Malcolm  <dmalcolm@redhat.com>

        PR analyzer/96374
        * Makefile.in (ANALYZER_OBJS): Add analyzer/feasible-graph.o and
        analyzer/trimmed-graph.o.
        * doc/analyzer.texi (Analyzer Paths): Rewrite description of
        feasibility checking to reflect new implementation.
        * doc/invoke.texi (-fdump-analyzer-feasibility): Document new
        option.
        * shortest-paths.h (shortest_paths::get_shortest_distance): New.

2021-03-11  David Malcolm  <dmalcolm@redhat.com>

        * digraph.cc (selftest::test_shortest_paths): Update
        shortest_paths init for new param.  Add test of
        SPS_TO_GIVEN_TARGET.
        * shortest-paths.h (enum shortest_path_sense): New.
        (shortest_paths::shortest_paths): Add "sense" param.
        Update for renamings.  Generalize to use "sense" param.
        (shortest_paths::get_shortest_path): Rename param.
        (shortest_paths::m_sense): New field.
        (shortest_paths::m_prev): Rename...
        (shortest_paths::m_best_edge): ...to this.
        (shortest_paths::get_shortest_path): Update for renamings.
        Conditionalize flipping of path on sense of traversal.

2021-03-11  David Malcolm  <dmalcolm@redhat.com>

        * digraph.cc (selftest::test_shortest_paths): Add test coverage
        for paths from B and C.
        * shortest-paths.h (shortest_paths::shortest_paths): Handle
        unreachable nodes, rather than asserting.

2021-03-11  David Edelsohn  <dje.gcc@gmail.com>

        PR target/99094
        * config/rs6000/rs6000.c (rs6000_xcoff_file_start): Don't create
        xcoff_tbss_section_name.
        * config/rs6000/xcoff.h (ASM_OUTPUT_TLS_COMMON): Use .lcomm.
        * xcoffout.c (xcoff_tbss_section_name): Delete.
        * xcoffout.h (xcoff_tbss_section_name): Delete.

2021-03-11  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/99523
        * tree-cfg.c (dump_function_to_file): Dump SSA names
        w/o identifier to the decls section as well, not only those
        without a VAR_DECL.

2021-03-11  Jakub Jelinek  <jakub@redhat.com>

        PR ipa/99517
        * ipa-icf-gimple.c (func_checker::compare_gimple_call): For internal
        function calls with lhs fail if the lhs don't have compatible types.

2021-03-11  Hans-Peter Nilsson  <hp@axis.com>

        * config/cris/cris.h (HARD_FRAME_POINTER_REGNUM): Define.
        Change FRAME_POINTER_REGNUM to correspond to a new faked
        register faked_fp, part of GENNONACR_REGS like faked_ap.
        (CRIS_FAKED_REGS_CONTENTS): New helper macro.
        (FIRST_PSEUDO_REGISTER, FIXED_REGISTERS, CALL_USED_REGISTERS):
        (REG_ALLOC_ORDER, REG_CLASS_CONTENTS, REGNO_OK_FOR_BASE_P)
        (ELIMINABLE_REGS, REGISTER_NAMES): Adjust accordingly.
        * config/cris/cris.md (CRIS_FP_REGNUM): Renumber to new faked
        register.
        (CRIS_REAL_FP_REGNUM): New constant.
        * config/cris/cris.c (cris_reg_saved_in_regsave_area): Check
        for HARD_FRAME_POINTER_REGNUM instead of FRAME_POINTER_REGNUM.
        (cris_initial_elimination_offset): Handle elimination changes
        to HARD_FRAME_POINTER_REGNUM instead of FRAME_POINTER_REGNUM
        and add one from FRAME_POINTER_REGNUM to
        HARD_FRAME_POINTER_REGNUM.
        (cris_expand_prologue, cris_expand_epilogue): Emit code for
        hard_frame_pointer_rtx instead of frame_pointer_rtx.

2021-03-10  David Edelsohn  <dje.gcc@gmail.com>

        PR target/99492
        * config/rs6000/aix.h (ADJUST_FIELD_ALIGN): Add check for DCmode.
        * config/rs6000/rs6000.c (rs6000_special_round_type_align): Same.

2021-03-10  Vladimir N. Makarov  <vmakarov@redhat.com>

        PR target/99422
        * lra-constraints.c (process_address_1): Don't check unknown
        constraint, use X for empty constraint.

2021-03-10  Alex Coplan  <alex.coplan@arm.com>

        * config/aarch64/aarch64.c (aarch64_vfp_is_call_or_return_candidate):
        Fix typo in comment describing "is_ha" argument.

2021-03-10  John David Anglin  <danglin@gcc.gnu.org>

        * doc/sourcebuild.texi: Document LRA target selector.

2021-03-10  David Malcolm  <dmalcolm@redhat.com>

        * doc/ux.texi: Add subsection contrasting interactive versus
        batch usage of GCC.

2021-03-10  Joel Hutton  <joel.hutton@arm.com>

        PR target/99102
        * tree-vect-stmts.c (vectorizable_store): Fix scatter store mask
        check condition.
        (vectorizable_load): Fix gather load mask check condition.

2021-03-10  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/99510
        * tree.c (check_aligned_type): Check that the candidate
        has TYPE_USER_ALIGN set instead of matching with the
        original type.

2021-03-10  Eric Botcazou  <ebotcazou@adacore.com>

        * config/sparc/sparc.c (sparc_regmode_natural_size): Return 4 for
        float and vector integer modes only if the mode is not larger.

2021-03-10  Hans-Peter Nilsson  <hp@axis.com>

        * config/cris/cris.h (DWARF_FRAME_REGISTERS): Define.

2021-03-09  Vladimir N. Makarov  <vmakarov@redhat.com>

        * ira.c (ira_setup_alts, ira_get_dup_out_num): Process digital
        constraints > 9.
        * ira-lives.c (single_reg_class): Ditto.

2021-03-09  Sebastian Huber  <sebastian.huber@embedded-brains.de>

        * config.gcc (aarch64-*-rtems*): Include general rtems.h after
        the architecture-specific rtems.h.
        (aarch64-*-rtems*): Likewise.
        (arm*-*-rtems*): Likewise.
        (epiphany-*-rtems*): Likewise.
        (riscv*-*-rtems*): Likewise.

2021-03-09  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/99305
        * tree-ssa-phiopt.c (conditional_replacement): Test integer_pow2p
        before integer_all_onesp instead of vice versa.

2021-03-09  Richard Earnshaw  <rearnsha@arm.com>

        * common/config/arm/arm-common.c (arm_config_default): Change type
        of 'i' to unsigned.

2021-03-09  Vladimir N. Makarov  <vmakarov@redhat.com>

        PR target/99454
        * lra-constraints.c (process_address_1): Process constraint 'g'
        separately and digital constraints containing more one digit.

2021-03-09  Nick Clifton  <nickc@redhat.com>

        * config/rx/rx.h (DBX_DEBUGGING_INFO): Define.
        (DWARF"_DEBUGGING_INFO): Define.

2021-03-09  Eric Botcazou  <ebotcazou@adacore.com>

        PR c++/90448
        * calls.c (initialize_argument_information): When the argument
        is passed by reference, do not make a copy in a thunk only if
        the argument is already in memory.  Remove redundant test for
        the case of callee copy.

2021-03-09  Vladimir N. Makarov  <vmakarov@redhat.com>

        PR target/99454
        * lra-constraints.c (process_address_1): Process 0..9 constraints
        in process_address_1.

2021-03-09  Andreas Krebbel  <krebbel@linux.ibm.com>

        * config/s390/s390.c (struct s390_processor processor_table):
        Binutils name string must not be empty.

2021-03-09  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc.c (arc_attr_type): Remove function.

2021-03-09  Martin Liska  <mliska@suse.cz>

        PR target/99464
        * config/i386/i386-options.c (ix86_option_override_internal):
        Set isa_flags for OPTS argument and not for the global
        global_options.

2021-03-09  Aaron Sawdey  <acsawdey@linux.ibm.com>

        * config/rs6000/predicates.md (ds_form_mem_operand): Check
        in correct code.

2021-03-09  Aaron Sawdey  <acsawdey@linux.ibm.com>

        PR target/99070
        * config/rs6000/predicates.md (ds_form_mem_operand) New
        predicate.
        * config/rs6000/genfusion.pl (gen_ld_cmpi_p10) Use
        ds_form_mem_operand in ld/lwa patterns.
        * config/rs6000/fusion.md: Regenerate file.

2021-03-08  Martin Sebor  <msebor@redhat.com>

        PR middle-end/98266
        * gimple-array-bounds.cc (inbounds_vbase_memaccess_p): New function.
        (array_bounds_checker::check_array_bounds): Call it.

2021-03-08  Martin Sebor  <msebor@redhat.com>

        PR middle-end/97631
        * tree-ssa-strlen.c (maybe_warn_overflow): Test rawmem.
        (handle_builtin_stxncpy_strncat): Rename locals.  Determine
        destination size from allocation calls.  Issue a more appropriate
        kind of warning.
        (handle_builtin_memcpy): Pass true as rawmem to maybe_warn_overflow.
        (handle_builtin_memset): Same.

2021-03-08  Peter Bergner  <bergner@linux.ibm.com>

        PR target/98959
        * config/rs6000/rs6000.c (rs6000_emit_le_vsx_permute): Add an assert
        to ensure we do not have an Altivec style address.
        * config/rs6000/vsx.md (*vsx_le_perm_load_<mode>): Disable if passed
        an Altivec style address.
        (*vsx_le_perm_store_<mode>): Likewise.
        (splitters after *vsx_le_perm_store_<mode>): Likewise.
        (vsx_load_<mode>): Disable special expander if passed an Altivec
        style address.
        (vsx_store_<mode>): Likewise.

2021-03-08  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        PR target/99437
        * config/aarch64/predicates.md (aarch64_simd_shift_imm_vec_qi): Define.
        (aarch64_simd_shift_imm_vec_hi): Likewise.
        (aarch64_simd_shift_imm_vec_si): Likewise.
        (aarch64_simd_shift_imm_vec_di): Likewise.
        * config/aarch64/aarch64-simd.md (aarch64_shrn<mode>_insn_le): Use
        predicate from above.
        (aarch64_shrn<mode>_insn_be): Likewise.
        (aarch64_rshrn<mode>_insn_le): Likewise.
        (aarch64_rshrn<mode>_insn_be): Likewise.
        (aarch64_shrn2<mode>_insn_le): Likewise.
        (aarch64_shrn2<mode>_insn_be): Likewise.
        (aarch64_rshrn2<mode>_insn_le): Likewise.
        (aarch64_rshrn2<mode>_insn_be): Likewise.

2021-03-08  Vladimir N. Makarov  <vmakarov@redhat.com>

        PR target/99422
        * lra-constraints.c (skip_contraint_modifiers): New function.
        (process_address_1): Use it before lookup_constraint call.

2021-03-08  Martin Liska  <mliska@suse.cz>

        PR target/99463
        * config/i386/i386-options.c (ix86_option_override_internal):
        Enable UINTR and HRESET for -march that supports it.

2021-03-08  Ilya Leoshkevich  <iii@linux.ibm.com>

        * config/s390/s390.c (f_constraint_p): New function.
        (s390_md_asm_adjust): Implement TARGET_MD_ASM_ADJUST.
        (TARGET_MD_ASM_ADJUST): Likewise.

2021-03-08  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/97927
        * tree-nested.c (convert_local_reference_stmt): Avoid calling
        lookup_field_for_decl for Fortran module (= namespace context).

2021-03-08  Andreas Krebbel  <krebbel@linux.ibm.com>

        * config/s390/s390.c (s390_expand_vec_compare): Implement <0
        comparison with arithmetic right shift.
        (s390_expand_vcond): No need for a force_reg anymore.
        s390_vec_compare will do it.
        * config/s390/vector.md ("vec_cmp<mode><tointvec>"): Accept also
        immediate operands.

2021-03-07  Jakub Jelinek  <jakub@redhat.com>

        PR target/99321
        * config/i386/constraints.md (Yw): Use SSE_REGS if TARGET_SSE
        but TARGET_AVX512BW or TARGET_AVX512VL is not set.  Adjust description
        and comment.
        * config/i386/sse.md (v_Yw): New define_mode_attr.
        (*<insn><mode>3, *mul<mode>3<mask_name>, *avx2_<code><mode>3,
        *sse4_1_<code><mode>3<mask_name>): Use <v_Yw> instead of v
        in constraints.
        * config/i386/mmx.md (mmx_pshufw_1, *vec_dupv4hi): Use Yw instead of
        xYw in constraints.

2021-03-06  Julian Brown  <julian@codesourcery.com>

        * tree-pretty-print.c (dump_generic_node): Emit non-generic
        address space info for aggregates.

2021-03-06  Hans-Peter Nilsson  <hp@axis.com>

        * config/cris/cris.h (MAX_FIXED_MODE_SIZE): Don't define.

2021-03-05  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/99322
        * tree-cfg.c (bb_to_omp_idx): New variable.
        (execute_build_cfg): Release the bb_to_omp_idx vector after
        cleanup_tree_cfg returns.
        (handle_abnormal_edges): Remove bb_to_omp_idx argument, adjust
        for bb_to_omp_idx being a vec<int> instead of pointer to array
        of ints.
        (make_edges): Remove bb_to_omp_idx local variable, don't pass
        it to handle_abnormal_edges, adjust for bb_to_omp_idx being a
        vec<int> instead of pointer to array of ints and don't free/release
        it at the end.
        (remove_bb): When removing a bb and placing forced label somewhere
        else, ensure it is put into the same OpenMP region during cfg
        pass if possible or to entry successor as fallback.  Unregister
        bb from bb_to_omp_idx.

2021-03-05  Vladimir N. Makarov  <vmakarov@redhat.com>

        PR target/99378
        * lra-constraints.c (process_address_1): Skip decomposing address
        for asm insn operand with unknown constraint.

2021-03-05  Martin Jambor  <mjambor@suse.cz>

        PR ipa/98078
        * cgraph.c (cgraph_edge::set_call_stmt): Do not update all
        corresponding speculative edges if we are about to resolve
        sepculation.  Make edge direct (and so resolve speculations) before
        removing it from call_site_hash.
        (cgraph_edge::make_direct): Relax the initial assert to allow calling
        the function on speculative direct edges.

2021-03-05  Eric Botcazou  <ebotcazou@adacore.com>

        PR rtl-optimization/99376
        * rtlanal.c (nonzero_bits1) <arithmetic operators>: If the number
        of low-order zero bits is too large, set the result to 0 directly.

2021-03-04  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/93235
        * expmed.c (store_bit_field_using_insv): Return false of xop0 is a
        SUBREG and a SUBREG to op_mode can't be created.

2021-03-04  Alex Coplan  <alex.coplan@arm.com>

        PR target/99381
        * config/aarch64/aarch64-sve-builtins.cc
        (function_resolver::require_vector_type): Handle error_mark_node.

2021-03-04  Ilya Leoshkevich  <iii@linux.ibm.com>

        * cfgexpand.c (expand_asm_loc): Pass new parameter.
        (expand_asm_stmt): Likewise.
        * config/arm/aarch-common-protos.h (arm_md_asm_adjust): Add new
        parameter.
        * config/arm/aarch-common.c (arm_md_asm_adjust): Likewise.
        * config/arm/arm.c (thumb1_md_asm_adjust): Likewise.
        * config/cris/cris.c (cris_md_asm_adjust): Likewise.
        * config/i386/i386.c (ix86_md_asm_adjust): Likewise.
        * config/mn10300/mn10300.c (mn10300_md_asm_adjust): Likewise.
        * config/nds32/nds32.c (nds32_md_asm_adjust): Likewise.
        * config/pdp11/pdp11.c (pdp11_md_asm_adjust): Likewise.
        * config/rs6000/rs6000.c (rs6000_md_asm_adjust): Likewise.
        * config/vax/vax.c (vax_md_asm_adjust): Likewise.
        * config/visium/visium.c (visium_md_asm_adjust): Likewise.
        * doc/tm.texi (md_asm_adjust): Likewise.
        * target.def (md_asm_adjust): Likewise.

2021-03-04  Richard Biener  <rguenther@suse.de>

        PR middle-end/97855
        * tree-pretty-print.c: Poison pp_printf.
        (dump_decl_name): Avoid use of pp_printf.
        (dump_block_node): Likewise.
        (dump_generic_node): Likewise.

2021-03-04  Martin Sebor  <msebor@redhat.com>

        PR middle-end/96963
        PR middle-end/94655
        * builtins.c (handle_array_ref): New helper.
        (handle_mem_ref): New helper.
        (compute_objsize_r): Factor out ARRAY_REF and MEM_REF handling
        into new helper functions.  Correct a workaround for vectorized
        assignments.

2021-03-03  Pat Haugen  <pthaugen@linux.ibm.com>

        * config/rs6000/dfp.md (extendddtd2, trunctddd2, *cmp<mode>_internal1,
        floatditd2, ftrunc<mode>2, fix<mode>di2, dfp_ddedpd_<mode>,
        dfp_denbcd_<mode>, dfp_dxex_<mode>, dfp_diex_<mode>,
        *dfp_sgnfcnc_<mode>, dfp_dscli_<mode>, dfp_dscri_<mode>): Update size
        attribute for Power10.
        * config/rs6000/mma.md (*movoo): Likewise.
        * config/rs6000/rs6000.md (define_attr "size"): Add 256.
        (define_mode_attr bits): Add DD/TD modes.
        * config/rs6000/sync.md (load_quadpti, store_quadpti, load_lockedpti,
        store_conditionalpti): Update size attribute for Power10.

2021-03-03  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

        PR bootstrap/92002
        * config/sparc/t-sparc (tree-ssanames.o-warn): Don't error for
        -Wuninitialized, -Wmaybe-uninitialized.
        (wide-int.o-warn): Likewise.

2021-03-03  Richard Earnshaw  <rearnsha@arm.com>

        * common/config/arm/arm-common.c: Include configargs.h.
        (arm_config_default): New function.
        (arm_target_mode): Renamed from arm_target_thumb_only.  Handle
        processors that do not support Thumb.  Take into account the
        --with-mode configuration setting for selecting the default.
        * config/arm/arm.h (OPTION_DEFAULT_SPECS): Remove entry for 'mode'.
        (TARGET_MODE_SPEC_FUNCTIONS): Update for function name change.

2021-03-03  Martin Liska  <mliska@suse.cz>

        PR gcov-profile/97461
        * gcov-io.h (GCOV_PREALLOCATED_KVP): Remove.

2021-03-03  Eric Botcazou  <ebotcazou@adacore.com>

        PR target/99234
        * config/i386/i386.c (ix86_compute_frame_layout): For a SEH target,
        point back the hard frame pointer to its default location when the
        frame is larger than SEH_MAX_FRAME_SIZE.

2021-03-03  Jakub Jelinek  <jakub@redhat.com>

        PR target/99321
        * config/i386/predicates.md (logic_operator): New define_predicate.
        * config/i386/i386.md (mov + mem using comm arith peephole2):
        Punt if operands[1] is EXT_REX_SSE_REGNO_P, AVX512BW is not enabled
        and the inner mode is [QH]Imode.

2021-03-03  Jakub Jelinek  <jakub@redhat.com>

        PR debug/99090
        * dwarf2out.c (dw_loc_list_struct): Add end_entry member.
        (new_loc_list): Clear end_entry.
        (output_loc_list): Only use DW_LLE_startx_length for -gsplit-dwarf
        if HAVE_AS_LEB128, otherwise use DW_LLE_startx_endx.  Fix comment
        typo.
        (index_location_lists): For dwarf_version >= 5 without HAVE_AS_LEB128,
        initialize also end_entry.

2021-03-03  Jakub Jelinek  <jakub@redhat.com>

        PR target/99085
        * cfgrtl.c (fixup_partitions): When changing some bbs from hot to cold
        partitions, if in non-layout mode after reorder_blocks also move
        affected blocks to ensure a single partition transition.

2021-03-03  Jason Merrill  <jason@redhat.com>

        PR c++/96078
        * cgraphunit.c (process_function_and_variable_attributes): Don't
        warn about flatten on an alias if the target also has it.
        * cgraph.h (symtab_node::get_alias_target_tree): New.

2021-03-02  David Edelsohn  <dje.gcc@gmail.com>

        * config/rs6000/rs6000.md (tls_get_tpointer_internal): Prepend
        period to symbol name.
        (tls_get_addr_internal<mode>): Same.

2021-03-02  David Malcolm  <dmalcolm@redhat.com>

        PR c/99323
        * diagnostic-show-locus.c
        (selftest::test_one_liner_many_fixits_2): Fix accidental usage of
        column 0.

2021-03-02  Martin Sebor  <msebor@redhat.com>

        PR middle-end/99276
        * builtins.c (warn_for_access): Remove stray warning text.

2021-03-02  Martin Sebor  <msebor@redhat.com>

        PR middle-end/99295
        * doc/extend.texi (attribute malloc): Reword and clarify nonaliasing
        property.

2021-03-02  Jakub Jelinek  <jakub@redhat.com>

        PR debug/99319
        * dwarf2out.c (output_macinfo_op): Use DW_MACRO_*_str* even with
        -gdwarf-5 -gstrict-dwarf.  For -gsplit-dwarf -gdwarf-5 use
        DW_MACRO_*_strx instead of DW_MACRO_*_strp.  Handle
        DW_MACRO_define_strx and DW_MACRO_undef_strx.
        (save_macinfo_strings): Use DW_MACRO_*_str* even with
        -gdwarf-5 -gstrict-dwarf.  Handle DW_MACRO_define_strx and
        DW_MACRO_undef_strx.

2021-03-02  Andreas Krebbel  <krebbel@linux.ibm.com>

        * config/s390/s390-builtin-types.def (BT_FN_V4SF_V8HI_UINT): New
        builtin signature.
        (BT_FN_V8HI_V8HI_UINT): Likewise.
        (BT_FN_V8HI_V4SF_V4SF_UINT): Likewise.
        * config/s390/s390-builtins.def (B_NNPA): New macro definition.
        (s390_vclfnhs, s390_vclfnls, s390_vcrnfs, s390_vcfn, s390_vcnf):
        New builtin definitions.
        * config/s390/s390-c.c (s390_cpu_cpp_builtins_internal): Bump
        vector extension version.
        * config/s390/s390.c (s390_expand_builtin): Check if builtins are
        available with current -march level.
        * config/s390/s390.md (UNSPEC_NNPA_VCLFNHS_V8HI)
        (UNSPEC_NNPA_VCLFNLS_V8HI, UNSPEC_NNPA_VCRNFS_V8HI)
        (UNSPEC_NNPA_VCFN_V8HI, UNSPEC_NNPA_VCNF_V8HI): New constants.
        * config/s390/vecintrin.h (vec_extend_to_fp32_hi): New macro.
        (vec_extend_to_fp32_lo): Likewise.
        (vec_round_from_fp32): Likewise.
        (vec_convert_to_fp16): Likewise.
        (vec_convert_from_fp16): Likewise.
        * config/s390/vx-builtins.md (vclfnhs_v8hi): New insn pattern.
        (vclfnls_v8hi): Likewise.
        (vcrnfs_v8hi): Likewise.
        (vcfn_v8hi): Likewise.
        (vcnf_v8hi): Likewise.

2021-03-02  Andreas Krebbel  <krebbel@linux.ibm.com>

        * common/config/s390/s390-common.c (processor_flags_table): New entry.
        * config.gcc: Enable arch14 for --with-arch and --with-tune.
        * config/s390/driver-native.c (s390_host_detect_local_cpu): Pick
        arch14 for unknown CPU models.
        * config/s390/s390-opts.h (enum processor_type): Add PROCESSOR_ARCH14.
        * config/s390/s390.c (s390_issue_rate): Add case for PROCESSOR_ARCH14.
        (s390_get_sched_attrmask): Likewise.
        (s390_get_unit_mask): Likewise.
        * config/s390/s390.h (enum processor_flags): Add PF_NNPA and PF_ARCH14.
        (TARGET_CPU_ARCH14, TARGET_CPU_ARCH14_P, TARGET_CPU_NNPA)
        (TARGET_CPU_NNPA_P, TARGET_ARCH14, TARGET_ARCH14_P, TARGET_NNPA)
        (TARGET_NNPA_P): New macro definitions.
        * config/s390/s390.md ("cpu_facility", "enabled"): Add arch14 and nnpa.
        * config/s390/s390.opt: Add PROCESSOR_ARCH14.

2021-03-02  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/95757
        * tree-vrp.c (register_edge_assert_for): Remove superfluous ()s around
        condition.  Call register_edge_assert_for_1 for == 0, != 0, == 1 and
        != 1 comparisons if name is lhs of a comparison.

2021-03-01  Iain Sandoe  <iain@sandoe.co.uk>

        PR target/44107
        PR target/48097
        * config/darwin-protos.h (darwin_should_restore_cfa_state): New.
        * config/darwin.c (darwin_should_restore_cfa_state): New.
        * config/darwin.h (TARGET_ASM_SHOULD_RESTORE_CFA_STATE): New.
        * doc/tm.texi: Regenerated.
        * doc/tm.texi.in: Document TARGET_ASM_SHOULD_RESTORE_CFA_STATE.
        * dwarf2cfi.c (connect_traces): If the target requests, restore
        the CFA expression after a DW_CFA_restore.
        * target.def (TARGET_ASM_SHOULD_RESTORE_CFA_STATE): New hook.

2021-03-01  Martin Liska  <mliska@suse.cz>

        PR target/99313
        * optc-save-gen.awk: Add 4 more exceptions.

2021-03-01  Nathan Sidwell  <nathan@acm.org>

        PR c++/99294
        * tree.h (TYPE_ALIGN_RAW): New accessor.
        (TYPE_ALIGN): Use it.

2021-03-01  Jan Hubicka  <jh@suse.cz>

        PR ipa/98338
        * ipa-fnsummary.c (compute_fn_summary): Fix sanity check.

2021-03-01  Eric Botcazou  <ebotcazou@adacore.com>

        PR target/99234
        * config/i386/i386.c (ix86_compute_frame_layout): For a SEH target,
        point the hard frame pointer to the SSE register save area instead
        of the general register save area.  Perform only minimal adjustment
        for small frames if it is initially not correctly aligned.
        (ix86_expand_prologue): Remove early saves for a SEH target.
        * config/i386/winnt.c (struct seh_frame_state): Document constraint.

2021-02-28  Jakub Jelinek  <jakub@redhat.com>

        PR c/99304
        * ipa.c (symbol_table::remove_unreachable_nodes): Fix a comment
        typo - referneced -> referenced.
        * tree.c (component_ref_size): Fix comment typo -
        refernce -> reference.
        * tree-ssa-alias.c (access_path_may_continue_p): Fix comment typo -
        traling -> trailing.
        (aliasing_component_refs_p): Fix comment typos -
        refernce -> reference and refernece -> reference and
        traling -> trailing.
        (nonoverlapping_refs_since_match_p): Fix comment typo -
        referneces -> references.
        * doc/invoke.texi (--param modref-max-bases): Fix a typo -
        referneces -> references.

2021-02-27  Iain Sandoe  <iain@sandoe.co.uk>

        * config/host-darwin.c (darwin_gt_pch_use_address): Modify
        diagnostic message to avoid use of a contraction and format
        warning.

2021-02-27  Jakub Jelinek  <jakub@redhat.com>

        PR other/99288
        * gcse.c (gcse_or_cprop_is_too_expensive): Use %wu instead of
        HOST_WIDE_INT_PRINT_UNSIGNED in warning format string.
        * ipa-devirt.c (ipa_odr_read_section): Use %wd instead of
        HOST_WIDE_INT_PRINT_DEC in inform format string.  Fix comment
        typos.

2021-02-26  Richard Biener  <rguenther@suse.de>

        PR middle-end/99281
        * expr.c (store_field): For calls with return-slot optimization
        and addressable return type expand the store directly.

2021-02-26  Richard Biener  <rguenther@suse.de>

        PR c/99275
        * builtins.c (warn_string_no_nul): Fix diagnostic formatting.

2021-02-26  Peter Bergner  <bergner@linux.ibm.com>

        PR target/99279
        * config/rs6000/rs6000-call.c (rs6000_init_builtins): Replace assert
        with an "if" test.

2021-02-26  Aaron Sawdey  <acsawdey@linux.ibm.com>

        * config.gcc: Add rs6000-pcrel-opt.o.
        * config/rs6000/rs6000-pcrel-opt.c: New file.
        * config/rs6000/pcrel-opt.md: New file.
        * config/rs6000/predicates.md: Add d_form_memory predicate.
        * config/rs6000/rs6000-cpus.def: Add OPTION_MASK_PCREL_OPT.
        * config/rs6000/rs6000-passes.def: Add pass_pcrel_opt.
        * config/rs6000/rs6000-protos.h: Add reg_to_non_prefixed(),
        pcrel_opt_valid_mem_p(), output_pcrel_opt_reloc(),
        and make_pass_pcrel_opt().
        * config/rs6000/rs6000.c (reg_to_non_prefixed): Make global.
        (rs6000_option_override_internal): Add pcrel-opt.
        (rs6000_delegitimize_address): Support pcrel-opt.
        (rs6000_opt_masks): Add pcrel-opt.
        (pcrel_opt_valid_mem_p): New function.
        (reg_to_non_prefixed): Make global.
        (rs6000_asm_output_opcode): Reset prepend_p_to_next_insn.
        (output_pcrel_opt_reloc): New function.
        * config/rs6000/rs6000.md (loads_extern_addr): New attr.
        (pcrel_extern_addr): Set loads_extern_addr.
        Add include for pcrel-opt.md.
        * config/rs6000/rs6000.opt: Add -mpcrel-opt.
        * config/rs6000/t-rs6000: Add rules for pcrel-opt.c and
        pcrel-opt.md.

2021-02-26  YunQiang Su  <yunqiang.su@cipunited.com>

        PR target/98996
        * config/mips/mips.c (mips_expand_ext_as_unaligned_load):
        If TARGET_64BIT and dest is SUBREG, we check the width, if it
        equal to SImode, we use SImode operation, just like what we are
        doing for REG one.

2021-02-26  Marek Polacek  <polacek@redhat.com>

        * builtins.c (warn_for_access): Fix typos.

2021-02-25  Iain Sandoe  <iain@sandoe.co.uk>

        * config/aarch64/aarch64.md (<optab>_rol<mode>3): Add a '#'
        mark in front of the immediate quantity.
        (<optab>_rolsi3_uxtw): Likewise.

2021-02-25  Richard Earnshaw  <rearnsha@arm.com>

        PR target/99271
        * config/arm/thumb2.md (nonsecure_call_reg_thumb2_fpcxt): New pattern.
        (nonsecure_call_value_reg_thumb2_fpcxt): Likewise.
        (nonsecure_call_reg_thumb2): Restrict to using r4 for the callee
        address and disable when the FPCXT is not available.
        (nonsecure_call_value_reg_thumb2): Likewise.

2021-02-25  Nathan Sidwell  <nathan@acm.org>

        PR c++/99166
        * doc/invoke.texi (flang-info-module-cmi): Renamed option.

2021-02-25  Tamar Christina  <tamar.christina@arm.com>

        * tree-vect-slp.c (optimize_load_redistribution_1): Abort on NULL nodes.

2021-02-25  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/99253
        * tree-vect-loop.c (check_reduction_path): First compute
        code, then verify out-of-loop uses.

2021-02-25  Jakub Jelinek  <jakub@redhat.com>

        PR target/95798
        * match.pd ((T)(A) + CST -> (T)(A + CST)): Add :s to convert.

2021-02-25  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/80635
        * tree-vrp.c (vrp_simplify_cond_using_ranges): Also handle
        VIEW_CONVERT_EXPR if modes are the same, innerop is integral and
        has mode precision.

2021-02-25  Richard Biener  <rguenther@suse.de>

        * tree-vect-slp.c (optimize_load_redistribution_1): Delay
        load_map population.
        (vect_match_slp_patterns_2): Revert part of last change.
        (vect_analyze_slp): Do not interleave optimize_load_redistribution
        with pattern detection but do it afterwards.  Dump the
        whole SLP graph after pattern recognition and load
        redistribution optimization finished.

2021-02-24  Jakub Jelinek  <jakub@redhat.com>

        PR fortran/99226
        * omp-low.c (struct omp_context): Add teams_nested_p and
        nonteams_nested_p members.
        (scan_omp_target): Diagnose teams nested inside of target with other
        directives strictly nested inside of the same target.
        (check_omp_nesting_restrictions): Set ctx->teams_nested_p or
        ctx->nonteams_nested_p as needed.

2021-02-24  Vladimir N. Makarov  <vmakarov@redhat.com>

        PR inline-asm/99123
        * lra-constraints.c (uses_hard_regs_p): Don't use decompose_mem_address.

2021-02-24  Hans-Peter Nilsson  <hp@axis.com>

        * config/cris/cris.c (cris_expand_prologue): Set
        current_function_static_stack_size, if flag_stack_usage_info.

2021-02-24  Pat Haugen  <pthaugen@linux.ibm.com>

        * config/rs6000/rs6000.c (next_insn_prefixed_p): Rename.
        (rs6000_final_prescan_insn): Adjust.
        (rs6000_asm_output_opcode): Likewise.

2021-02-24  Martin Sebor  <msebor@redhat.com>

        PR middle-end/97172
        * attribs.c (attr_access::free_lang_data): Clear attribute arg spec
        from function arguments.

2021-02-24  Tamar Christina  <tamar.christina@arm.com>

        PR tree-optimization/99220
        * tree-vect-slp.c (optimize_load_redistribution_1): Remove
        node from cache when it's about to be deleted.

2021-02-24  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/99225
        * fold-const.c (fold_binary_loc) <case NE_EXPR>: In (x & (1 << y)) != 0
        to ((x >> y) & 1) != 0 simplifications use build_one_cst instead of
        build_int_cst (..., 1).  Formatting fixes.

2021-02-24  Tamar Christina  <tamar.christina@arm.com>

        PR tree-optimization/99149
        * tree-vect-slp-patterns.c (vect_detect_pair_op): Don't recreate the
        buffer.
        (vect_slp_reset_pattern): Remove.
        (complex_fma_pattern::matches): Remove call to vect_slp_reset_pattern.
        (complex_mul_pattern::build, complex_fma_pattern::build,
        complex_fms_pattern::build): Fix ref counts.
        * tree-vect-slp.c (vect_free_slp_tree): Undo SLP only pattern relevancy
        when node is being deleted.
        (vect_match_slp_patterns_2): Correct result of cache hit on patterns.
        (vect_schedule_slp): Invalidate SLP_TREE_REPRESENTATIVE of removed
        stores.
        * tree-vectorizer.c (vec_info::new_stmt_vec_info): Initialize value.

2021-02-24  Matthias Klose  <doko@ubuntu.com>

        Revert:
        2020-12-07  Matthias Klose  <doko@ubuntu.com>

        * genextract.c (print_header): Undefine ENABLE_RTL_CHECKING
        and ENABLE_RTL_FLAG_CHECKING.

2021-02-24  Richard Biener  <rguenther@suse.de>

        PR c/99224
        * builtins.c (fold_builtin_next_arg): Avoid NULL arg.

2021-02-23  Peter Bergner  <bergner@linux.ibm.com>

        * config/rs6000/mma.md (mma_assemble_pair): Rename from this...
        (vsx_assemble_pair): ...to this.
        (*mma_assemble_pair): Rename from this...
        (*vsx_assemble_pair): ...to this.
        (mma_disassemble_pair): Rename from this...
        (vsx_disassemble_pair): ...to this.
        (*mma_disassemble_pair): Rename from this...
        (*vsx_disassemble_pair): ...to this.
        * config/rs6000/rs6000-builtin.def (BU_MMA_V2, BU_MMA_V3,
        BU_COMPAT): New macros.
        (mma_assemble_pair): Rename from this...
        (vsx_assemble_pair): ...to this.
        (mma_disassemble_pair): Rename from this...
        (vsx_disassemble_pair): ...to this.
        (mma_assemble_pair): New compatibility built-in.
        (mma_disassemble_pair): Likewise.
        * config/rs6000/rs6000-call.c (struct builtin_compatibility): New.
        (RS6000_BUILTIN_COMPAT): Define.
        (bdesc_compat): New.
        (mma_expand_builtin): Use VSX_BUILTIN_DISASSEMBLE_PAIR_INTERNAL.
        (rs6000_gimple_fold_mma_builtin): Use MMA_BUILTIN_DISASSEMBLE_PAIR
        and VSX_BUILTIN_ASSEMBLE_PAIR.
        (rs6000_init_builtins): Register compatibility built-ins.
        (mma_init_builtins): Use VSX_BUILTIN_ASSEMBLE_PAIR,
        VSX_BUILTIN_ASSEMBLE_PAIR_INTERNAL, VSX_BUILTIN_DISASSEMBLE_PAIR and
        VSX_BUILTIN_DISASSEMBLE_PAIR_INTERNAL.
        * doc/extend.texi (__builtin_mma_assemble_pair): Rename from this...
        (__builtin_vsx_assemble_pair): ...to this.
        (__builtin_mma_disassemble_pair): Rename from this...
        (__builtin_vsx_disassemble_pair): ...to this.

2021-02-23  Martin Liska  <mliska@suse.cz>

        PR sanitizer/99168
        * ipa-icf.c (sem_variable::merge): Do not merge 2 variables
        with different alignment. That leads to an invalid red zone
        size allocated in runtime.

2021-02-23  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/99204
        * fold-const.c (fold_read_from_constant_string): Check that
        tree_fits_uhwi_p (index) rather than just that index is INTEGER_CST.

2021-02-23  Segher Boessenkool  <segher@kernel.crashing.org>
            Kewen Lin  <linkw@gcc.gnu.org>

        * config/rs6000/rs6000.md (*rotl<mode>3_insert_3): Renamed to...
        (rotl<mode>3_insert_3): ...this.
        (plus_ior_xor): New code_iterator.
        (define_split for GPR rl*imi): New splitter.
        * config/rs6000/vsx.md (vsx_init_v4si): Use gen_rotldi3_insert_3
        for integer merging.

2021-02-22  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-tuning-flags.def (cse_sve_vl_constants):
        Define.
        * config/aarch64/aarch64.md (add<mode>3): Force CONST_POLY_INT immediates
        into a register when the above is enabled.
        * config/aarch64/aarch64.c (neoversev1_tunings):
        AARCH64_EXTRA_TUNE_CSE_SVE_VL_CONSTANTS.
        (aarch64_rtx_costs): Use AARCH64_EXTRA_TUNE_CSE_SVE_VL_CONSTANTS.

2021-02-22  Hans-Peter Nilsson  <hp@axis.com>

        * config/cris/cris.c (cris_print_operand) <'T'>: Change
        valid operand from is now an addi mult-value to shift-value.
        * config/cris/cris.md (*addi): Change expression of scaled
        operand from mult to ashift.
        * config/cris/cris.md (*addi_reload): New insn_and_split.

2021-02-22  John David Anglin  <danglin@gcc.gnu.org>

        PR target/85074
        * config/pa/pa.c (TARGET_ASM_CAN_OUTPUT_MI_THUNK): Define as
        hook_bool_const_tree_hwi_hwi_const_tree_true.
        (pa_asm_output_mi_thunk): Add support for nonzero vcall_offset.

2021-02-22  Andre Vieira  <andre.simoesdiasvieira@arm.com>

        PR rtl-optimization/98791
        * ira-conflicts.c (process_regs_for_copy): Don't create allocno copies
        for unordered modes.

2021-02-22  Martin Liska  <mliska@suse.cz>

        * tree-inline.c (inline_forbidden_p): Set
        inline_forbidden_reason.

2021-02-22  Richard Biener  <rguenther@suse.de>

        * tree-vect-slp.c (vect_bb_vectorization_profitable_p): Dump
        costed subgraph.

2021-02-22  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/99165
        * gimple-ssa-store-merging.c (pass_store_merging::process_store):
        Accumulate changed to ret.

2021-02-21  Uros Bizjak  <ubizjak@gmail.com>

        Revert:
        2020-12-09  Uroš Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.h (REG_ALLOC_ORDER): Remove

2021-02-20  Ilya Leoshkevich  <iii@linux.ibm.com>

        PR target/99134
        * config/s390/vector.md (trunctf<DFP_ALL:mode>2_vr): New
        pattern.
        (trunctf<DFP_ALL:mode>2): Likewise.
        (trunctdtf2_vr): Likewise.
        (trunctdtf2): Likewise.
        (extend<DFP_ALL:mode>tf2_vr): Likewise.
        (extend<DFP_ALL:mode>tf2): Likewise.
        (extendtftd2_vr): Likewise.
        (extendtftd2): Likewise.

2021-02-20  Ilya Leoshkevich  <iii@linux.ibm.com>

        * config/s390/vector.md (*fprx2_to_tf): Rename to fprx2_to_tf,
        add memory alternative.
        (tf_to_fprx2): New pattern.

2021-02-19  Martin Sebor  <msebor@redhat.com>

        PR c/97172
        * attribs.c (init_attr_rdwr_indices): Guard vblist use.
        (attr_access::free_lang_data): Remove a spurious test.

2021-02-19  Nathan Sidwell  <nathan@acm.org>

        * doc/invoke.texi (flang-info-module-read): Document.

2021-02-19  Martin Liska  <mliska@suse.cz>

        PR translation/99167
        * params.opt: Fix typo.

2021-02-19  Richard Biener  <rguenther@suse.de>

        PR middle-end/99122
        * tree-inline.c (inline_forbidden_p): Do not inline functions
        with VLA arguments or return value.

2021-02-19  Jakub Jelinek  <jakub@redhat.com>

        PR target/98998
        * config/arm/arm.md (*stack_protect_combined_set_insn,
        *stack_protect_combined_test_insn): If force_const_mem result
        is not valid general operand, force its address into the destination
        register first.

2021-02-19  Jakub Jelinek  <jakub@redhat.com>

        PR ipa/99034
        * tree-cfg.c (gimple_merge_blocks): If bb a starts with eh landing
        pad or non-local label, put FORCED_LABELs from bb b after that label
        rather than before it.

2021-02-19  Andre Vieira  <andre.simoesdiasvieira@arm.com>

        PR target/98657
        * config/aarch64/aarch64-sve.md (<ASHIFT:optab><mode>3): Use
        expand_vector_broadcast' to emit the vec_duplicate operand.

2021-02-18  Vladimir N. Makarov  <vmakarov@redhat.com>

        PR rtl-optimization/96264
        * lra-remat.c (reg_overlap_for_remat_p): Check also output insn
        hard regs.

2021-02-18  H.J. Lu  <hjl.tools@gmail.com>

        PR target/99113
        * varasm.c (get_section): Replace SUPPORTS_SHF_GNU_RETAIN with
        looking up the retain attribute.
        (resolve_unique_section): Likewise.
        (get_variable_section): Likewise.
        (switch_to_section): Likewise.  Warn when a symbol without the
        retain attribute and a symbol with the retain attribute are
        placed in the section with the same name, instead of the used
        attribute.
        * doc/extend.texi: Document the "retain" attribute.

2021-02-18  Nathan Sidwell  <nathan@acm.org>

        PR c++/99023
        * doc/invoke.texi (flang-info-include-translate): Document header
        lookup behaviour.

2021-02-18  Richard Biener  <rguenther@suse.de>

        PR middle-end/99122
        * ipa-fnsummary.c (analyze_function_body): Set
        CIF_FUNCTION_NOT_INLINABLE for VLA parameter calls.
        * tree-inline.c (insert_init_debug_bind): Pass NULL for
        error_mark_node values.
        (force_value_to_type): Do not build V_C_Es for WITH_SIZE_EXPR
        values.
        (setup_one_parameter): Delay force_value_to_type until when
        it's needed.

2021-02-18  Hans-Peter Nilsson  <hp@axis.com>

        PR tree-optimization/99142
        * match.pd (clz cmp 0): Gate replacement on single_use of clz result.

2021-02-18  Jakub Jelinek  <jakub@redhat.com>

        * wide-int-bitmask.h (wide_int_bitmask::wide_int_bitmask (),
        wide_int_bitmask::wide_int_bitmask (uint64_t),
        wide_int_bitmask::wide_int_bitmask (uint64_t, uint64_t),
        wide_int_bitmask::operator ~ () const,
        wide_int_bitmask::operator | (wide_int_bitmask) const,
        wide_int_bitmask::operator & (wide_int_bitmask) const): Use constexpr
        instead of inline.
        * config/i386/i386.h (PTA_3DNOW, PTA_3DNOW_A, PTA_64BIT, PTA_ABM,
        PTA_AES, PTA_AVX, PTA_BMI, PTA_CX16, PTA_F16C, PTA_FMA, PTA_FMA4,
        PTA_FSGSBASE, PTA_LWP, PTA_LZCNT, PTA_MMX, PTA_MOVBE, PTA_NO_SAHF,
        PTA_PCLMUL, PTA_POPCNT, PTA_PREFETCH_SSE, PTA_RDRND, PTA_SSE, PTA_SSE2,
        PTA_SSE3, PTA_SSE4_1, PTA_SSE4_2, PTA_SSE4A, PTA_SSSE3, PTA_TBM,
        PTA_XOP, PTA_AVX2, PTA_BMI2, PTA_RTM, PTA_HLE, PTA_PRFCHW, PTA_RDSEED,
        PTA_ADX, PTA_FXSR, PTA_XSAVE, PTA_XSAVEOPT, PTA_AVX512F, PTA_AVX512ER,
        PTA_AVX512PF, PTA_AVX512CD, PTA_NO_TUNE, PTA_SHA, PTA_PREFETCHWT1,
        PTA_CLFLUSHOPT, PTA_XSAVEC, PTA_XSAVES, PTA_AVX512DQ, PTA_AVX512BW,
        PTA_AVX512VL, PTA_AVX512IFMA, PTA_AVX512VBMI, PTA_CLWB, PTA_MWAITX,
        PTA_CLZERO, PTA_NO_80387, PTA_PKU, PTA_AVX5124VNNIW, PTA_AVX5124FMAPS,
        PTA_AVX512VPOPCNTDQ, PTA_SGX, PTA_AVX512VNNI, PTA_GFNI, PTA_VAES,
        PTA_AVX512VBMI2, PTA_VPCLMULQDQ, PTA_AVX512BITALG, PTA_RDPID,
        PTA_PCONFIG, PTA_WBNOINVD, PTA_AVX512VP2INTERSECT, PTA_PTWRITE,
        PTA_AVX512BF16, PTA_WAITPKG, PTA_MOVDIRI, PTA_MOVDIR64B, PTA_ENQCMD,
        PTA_CLDEMOTE, PTA_SERIALIZE, PTA_TSXLDTRK, PTA_AMX_TILE, PTA_AMX_INT8,
        PTA_AMX_BF16, PTA_UINTR, PTA_HRESET, PTA_KL, PTA_WIDEKL, PTA_AVXVNNI,
        PTA_X86_64_BASELINE, PTA_X86_64_V2, PTA_X86_64_V3, PTA_X86_64_V4,
        PTA_CORE2, PTA_NEHALEM, PTA_WESTMERE, PTA_SANDYBRIDGE, PTA_IVYBRIDGE,
        PTA_HASWELL, PTA_BROADWELL, PTA_SKYLAKE, PTA_SKYLAKE_AVX512,
        PTA_CASCADELAKE, PTA_COOPERLAKE, PTA_CANNONLAKE, PTA_ICELAKE_CLIENT,
        PTA_ICELAKE_SERVER, PTA_TIGERLAKE, PTA_SAPPHIRERAPIDS, PTA_ALDERLAKE,
        PTA_KNL, PTA_BONNELL, PTA_SILVERMONT, PTA_GOLDMONT, PTA_GOLDMONT_PLUS,
        PTA_TREMONT, PTA_KNM): Use constexpr instead of const.

2021-02-18  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/99109
        * gimple-array-bounds.cc (build_zero_elt_array_type): Rename to ...
        (build_printable_array_type): ... this.  Add nelts argument.  For
        overaligned eltype, use TYPE_MAIN_VARIANT (eltype) instead.  If
        nelts, call build_array_type_nelts.
        (array_bounds_checker::check_mem_ref): Use build_printable_array_type
        instead of build_zero_elt_array_type and build_array_type_nelts.

2021-02-18  Jakub Jelinek  <jakub@redhat.com>

        PR target/99104
        * config/i386/i386.c (distance_non_agu_define): Don't call
        extract_insn_cached here.
        (ix86_lea_outperforms): Save and restore recog_data around call
        to distance_non_agu_define and distance_agu_use.
        (ix86_ok_to_clobber_flags): Remove.
        (ix86_avoid_lea_for_add): Don't call ix86_ok_to_clobber_flags.
        (ix86_avoid_lea_for_addr): Likewise.  Adjust function comment.
        * config/i386/i386.md (*lea<mode>): Change from define_insn_and_split
        into define_insn.  Move the splitting to define_peephole2 and
        check there using peep2_regno_dead_p if FLAGS_REG is dead.

2021-02-17  Julian Brown  <julian@codesourcery.com>

        * gimplify.c (gimplify_scan_omp_clauses): Handle ATTACH_DETACH
        for non-decls.

2021-02-17  Xi Ruoyao  <xry111@mengyan1223.wang>

        PR target/98491
        * config/mips/mips.c (mips_symbol_insns): Do not use
        MSA_SUPPORTED_MODE_P if mode is MAX_MACHINE_MODE.

2021-02-16  Vladimir N. Makarov  <vmakarov@redhat.com>

        PR inline-asm/98096
        * stmt.c (resolve_operand_name_1): Take inout operands into account
        for access to labels by names.
        * doc/extend.texi: Describe counting operands for accessing labels.

2021-02-16  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/38474
        * tree-ssa-structalias.c (variable_info::address_taken): New.
        (new_var_info): Initialize address_taken.
        (process_constraint): Set address_taken.
        (solve_constraints): Use the new address_taken flag rather
        than is_reg_var for sorting variables.
        (dump_constraint): Dump the variable number if the name
        is just NULL.

2021-02-16  Jakub Jelinek  <jakub@redhat.com>

        PR target/99100
        * tree-vect-stmts.c (vectorizable_simd_clone_call): For num_calls != 1
        multiply by 4096 and for inbranch by 8192.
        * config/i386/i386.c (ix86_simd_clone_usable): For TARGET_AVX512F,
        return 3, 2 or 1 for mangle letters 'b', 'c' or 'd'.

2021-02-15  Maya Rashish  <coypu@sdf.org>

        * config/aarch64/aarch64.c (aarch64_init_builtins):
        Call SUBTARGET_INIT_BUILTINS.

2021-02-15  Peter Bergner  <bergner@linux.ibm.com>

        PR rtl-optimization/98872
        * init-regs.c (initialize_uninitialized_regs): Skip initialization
        if CONST0_RTX is NULL.

2021-02-15  Richard Sandiford  <richard.sandiford@arm.com>

        PR rtl-optimization/98863
        * rtl-ssa/functions.h (function_info::bb_live_out_info): Delete.
        (function_info::build_info): Turn into a declaration, moving the
        definition to internals.h.
        (function_info::bb_walker): Declare.
        (function_info::create_reg_use): Likewise.
        (function_info::calculate_potential_phi_regs): Take a build_info
        parameter.
        (function_info::place_phis, function_info::create_ebbs): Declare.
        (function_info::calculate_ebb_live_in_for_debug): Likewise.
        (function_info::populate_backedge_phis): Delete.
        (function_info::start_block, function_info::end_block): Declare.
        (function_info::populate_phi_inputs): Delete.
        (function_info::m_potential_phi_regs): Move information to build_info.
        * rtl-ssa/internals.h: New file.
        (function_info::bb_phi_info): New class.
        (function_info::build_info): Moved from functions.h.
        Add a constructor and destructor.
        (function_info::build_info::ebb_use): Delete.
        (function_info::build_info::ebb_def): Likewise.
        (function_info::build_info::bb_live_out): Likewise.
        (function_info::build_info::tmp_ebb_live_in_for_debug): New variable.
        (function_info::build_info::potential_phi_regs): Likewise.
        (function_info::build_info::potential_phi_regs_for_debug): Likewise.
        (function_info::build_info::ebb_def_regs): Likewise.
        (function_info::build_info::bb_phis): Likewise.
        (function_info::build_info::bb_mem_live_out): Likewise.
        (function_info::build_info::bb_to_rpo): Likewise.
        (function_info::build_info::def_stack): Likewise.
        (function_info::build_info::old_def_stack_limit): Likewise.
        * rtl-ssa/internals.inl (function_info::build_info::record_reg_def):
        Remove the regno argument.  Push the previous definition onto the
        definition stack where necessary.
        * rtl-ssa/accesses.cc: Include internals.h.
        * rtl-ssa/changes.cc: Likewise.
        * rtl-ssa/blocks.cc: Likewise.
        (function_info::build_info::build_info): Define.
        (function_info::build_info::~build_info): Likewise.
        (function_info::bb_walker): New class.
        (function_info::bb_walker::bb_walker): Define.
        (function_info::add_live_out_use): Convert a logarithmic-complexity
        test into a linear one.  Allow the same definition to be passed
        multiple times.
        (function_info::calculate_potential_phi_regs): Moved from
        functions.cc.  Take a build_info parameter and store the
        information there instead.
        (function_info::place_phis): New function.
        (function_info::add_entry_block_defs): Update call to record_reg_def.
        (function_info::calculate_ebb_live_in_for_debug): New function.
        (function_info::add_phi_nodes): Use bb_phis to decide which
        registers need phi nodes and initialize ebb_def_regs accordingly.
        Do not add degenerate phis here.
        (function_info::add_artificial_accesses): Use create_reg_use.
        Assert that all definitions are listed in the DF LR sets.
        Update call to record_reg_def.
        (function_info::record_block_live_out): Record live-out register
        values in the phis of successor blocks.  Use the live-out set
        when processing the last block in an EBB, instead of always
        using the live-in sets of successor blocks.  AND the live sets
        with the set of registers that have been defined in the EBB,
        rather than with all potential phi registers.  Cope correctly
        with branches back to the start of the current EBB.
        (function_info::start_block): New function.
        (function_info::end_block): Likewise.
        (function_info::populate_phi_inputs): Likewise.
        (function_info::create_ebbs): Likewise.
        (function_info::process_all_blocks): Rewrite into a multi-phase
        process.
        * rtl-ssa/functions.cc: Include internals.h.
        (function_info::calculate_potential_phi_regs): Move to blocks.cc.
        (function_info::init_function_data): Remove caller.
        * rtl-ssa/insns.cc: Include internals.h
        (function_info::create_reg_use): New function.  Lazily any
        degenerate phis needed by the linear RPO view.
        (function_info::record_use): Use create_reg_use.  When processing
        debug uses, use potential_phi_regs and test it before checking
        whether the register is live on entry to the current EBB.  Lazily
        calculate ebb_live_in_for_debug.
        (function_info::record_call_clobbers): Update call to record_reg_def.
        (function_info::record_def): Likewise.

2021-02-15  Martin Liska  <mliska@suse.cz>

        * toplev.c (init_asm_output): Free output of
        gen_command_line_string function.
        (process_options): Likewise.

2021-02-15  Martin Liska  <mliska@suse.cz>

        * params.opt: Add 2 missing Param keywords.

2021-02-15  Eric Botcazou  <ebotcazou@adacore.com>

        * df-core.c (df_worklist_dataflow_doublequeue): Use proper cast.

2021-02-15  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/99079
        * match.pd (A % (pow2pcst << N) -> A & ((pow2pcst << N) - 1)): Remove
        useless tree_nop_conversion_p (type, TREE_TYPE (@3)) check.  Instead
        require both type and TREE_TYPE (@1) to be integral types and either
        type having smaller or equal precision, or TREE_TYPE (@1) being
        unsigned type, or type being signed type.  If TREE_TYPE (@1)
        doesn't have wrapping overflow, perform the subtraction of one in
        unsigned type.

2021-02-14  Jan Hubicka  <hubicka@ucw.cz>
            Richard Biener  <rguether@suse.de>

        PR ipa/97346
        * ipa-reference.c (ipa_init): Only conditinally initialize
        reference_vars_to_consider.
        (propagate): Conditionally deninitialize reference_vars_to_consider.
        (ipa_reference_write_optimization_summary): Sanity check that
        reference_vars_to_consider is not allocated.

2021-02-13  Levy Hsu  <admin@levyhsu.com>

        PR target/97417
        * config/riscv/riscv-shorten-memrefs.c (pass_shorten_memrefs): Add
        extend parameter to get_si_mem_base_reg declaration.
        (get_si_mem_base_reg): Add extend parameter.  Set it.
        (analyze): Pass extend arg to get_si_mem_base_reg.
        (transform): Likewise.  Use it when rewriting mems.
        * config/riscv/riscv.c (riscv_legitimize_move): Check for subword
        loads and emit sign/zero extending load followed by subreg move.

2021-02-13  Jim Wilson  <jimw@sifive.com>

        PR target/97417
        * config/riscv/riscv.c (riscv_compressed_lw_address_p): Drop early
        exit when !reload_completed.  Only perform check for compressed reg
        if reload_completed.
        (riscv_rtx_costs): In MEM case, when optimizing for size and
        shorten memrefs, if not compressible, then increase cost.

2021-02-13  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/98439
        * recog.c (pass_split_before_regstack::gate): Enable even when
        pass_split_before_sched2 is enabled if -fselective-scheduling2 is
        on.

2021-02-13  Jakub Jelinek  <jakub@redhat.com>

        PR target/96166
        * config/i386/mmx.md (*mmx_pshufd_1): Add a combine splitter for
        swap of V2SImode elements in memory into DImode memory rotate by 32.

2021-02-12  Martin Sebor  <msebor@redhat.com>

        * tree-pretty-print.c (print_generic_expr_to_str): Update comment.

2021-02-12  Richard Sandiford  <richard.sandiford@arm.com>

        * rtl-ssa/accesses.cc (function_info::make_use_available): Use
        m_temp_obstack rather than m_obstack to allocate the temporary use.

2021-02-12  Richard Sandiford  <richard.sandiford@arm.com>

        * df-problems.c (df_lr_bb_local_compute): Treat partial definitions
        as read-modify operations.

2021-02-12  Richard Biener  <rguenther@suse.de>

        PR middle-end/38474
        * ipa-fnsummary.c (unmodified_parm_1): Only walk when
        fbi->aa_walk_budget is bigger than zero.  Update
        fbi->aa_walk_budget.
        (param_change_prob): Likewise.
        * ipa-prop.c (detect_type_change_from_memory_writes):
        Properly account walk_aliased_vdefs.
        (parm_preserved_before_stmt_p): Canonicalize updates.
        (parm_ref_data_preserved_p): Likewise.
        (parm_ref_data_pass_through_p): Likewise.
        (determine_known_aggregate_parts): Account own alias queries.

2021-02-12  Martin Liska  <mliska@suse.cz>

        * opts-common.c (decode_cmdline_option): Release werror_arg.
        * opts.c (gen_producer_string): Release output of
        gen_command_line_string.

2021-02-12  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/38474
        * params.opt (-param=max-store-chains-to-track=): New param.
        (-param=max-stores-to-track=): Likewise.
        * doc/invoke.texi (max-store-chains-to-track): Document.
        (max-stores-to-track): Likewise.
        * gimple-ssa-store-merging.c (pass_store_merging::m_n_chains):
        New.
        (pass_store_merging::m_n_stores): Likewise.
        (pass_store_merging::terminate_and_process_chain): Update
        m_n_stores and m_n_chains.
        (pass_store_merging::process_store): Likewise.   Terminate
        oldest chains if the number of stores or chains get too large.
        (imm_store_chain_info::terminate_and_process_chain): Dump
        chain length.

2021-02-11  Eric Botcazou  <ebotcazou@adacore.com>

        * config/i386/winnt.c (i386_pe_seh_unwind_emit): When switching to
        the cold section, emit a nop before the directive if the previous
        active instruction can throw.

2021-02-11  Peter Bergner  <bergner@linux.ibm.com>

        PR target/99041
        * config/rs6000/predicates.md (mma_assemble_input_operand): Restrict
        memory addresses that are legal for quad word accesses.

2021-02-11  Andrea Corallo  <andrea.corallo@arm.com>

        PR target/98931
        * config/arm/thumb2.md (*doloop_end_internal): Generate
        alternative sequence to handle long range branches.

2021-02-11  Joel Hutton  <joel.hutton@arm.com>

        PR tree-optimization/98772
        * optabs-tree.c (supportable_half_widening_operation): New function
        to check for supportable V8QI->V8HI widening patterns.
        * optabs-tree.h (supportable_half_widening_operation): New function.
        * tree-vect-stmts.c (vect_create_half_widening_stmts): New function
        to create promotion stmts for V8QI->V8HI widening patterns.
        (vectorizable_conversion): Add case for V8QI->V8HI.

2021-02-11  Richard Biener  <rguenther@suse.de>

        * sparseset.h (SPARSESET_ELT_BITS): Remove.
        (SPARSESET_ELT_TYPE): Use unsigned int.
        * fwprop.c: Do not include sparseset.h.

2021-02-10  Jakub Jelinek  <jakub@redhat.com>

        PR c++/99035
        * varasm.c (declare_weak): For -fsyntax-only, allow even
        TREE_ASM_WRITTEN function decls.

2021-02-10  Jakub Jelinek  <jakub@redhat.com>

        PR target/99025
        * config/i386/sse.md (fix<fixunssuffix>_truncv2sfv2di2,
        <insn>v8qiv8hi2, <insn>v8qiv8si2, <insn>v4qiv4si2, <insn>v4hiv4si2,
        <insn>v8qiv8di2, <insn>v4qiv4di2, <insn>v2qiv2di2, <insn>v4hiv4di2,
        <insn>v2hiv2di2, <insn>v2siv2di2): Force operands[1] into REG before
        calling simplify_gen_subreg on it.

2021-02-10  Martin Liska  <mliska@suse.cz>

        * config/nvptx/nvptx.c (nvptx_option_override): Use
        flag_patchable_function_entry instead of the removed
        function_entry_patch_area_size.

2021-02-10  Martin Liska  <mliska@suse.cz>

        PR tree-optimization/99002
        PR tree-optimization/99026
        * gimple-if-to-switch.cc (if_chain::is_beneficial): Fix memory
        leak when adjacent cases are merged.
        * tree-switch-conversion.c (switch_decision_tree::analyze_switch_statement): Use
        release_clusters.
        (make_pass_lower_switch): Remove trailing whitespace.
        * tree-switch-conversion.h (release_clusters): New.

2021-02-10  Richard Biener  <rguenther@suse.de>

        PR rtl-optimization/99054
        * cfgrtl.c (rtl-optimization/99054): Return an auto_vec.
        (fixup_partitions): Adjust.
        (rtl_verify_edges): Likewise.

2021-02-10  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/99007
        * gimplify.c (gimplify_scan_omp_clauses): For MEM_REF on reductions,
        temporarily disable gimplify_ctxp->into_ssa around gimplify_expr
        calls.

2021-02-10  Richard Biener  <rguenther@suse.de>

        PR ipa/99029
        * ipa-pure-const.c (propagate_malloc): Use an auto_vec<>
        for callees.

2021-02-10  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/99024
        * tree-vect-loop.c (_loop_vec_info::~_loop_vec_info): Only
        clear loop->aux if it is associated with the destroyed loop_vinfo.

2021-02-10  Martin Liska  <mliska@suse.cz>

        PR tree-optimization/99002
        * gimple-if-to-switch.cc (find_conditions): Fix memory leak
        in the function.

2021-02-10  Martin Liska  <mliska@suse.cz>

        PR ipa/99003
        * ipa-icf.c (sem_item::add_reference): Fix memory leak when
        a reference exists.

2021-02-10  Jakub Jelinek  <jakub@redhat.com>

        PR debug/98755
        * dwarf2out.c (prune_unused_types_walk): Mark DW_TAG_variable DIEs
        at class scope for DWARF5+.

2021-02-09  Eric Botcazou  <ebotcazou@adacore.com>

        PR rtl-optimization/96015
        * reorg.c (skip_consecutive_labels): Minor comment tweaks.
        (relax_delay_slots): When deleting a jump to the next active
        instruction over a barrier, first delete the barrier if the
        jump is the only way to reach the target label.

2021-02-09  Andre Vieira  <andre.simoesdiasvieira@arm.com>

        * config/aarch64/aarch64-cost-tables.h: Add entries for vect.mul.
        * config/aarch64/aarch64.c (aarch64_rtx_mult_cost): Use vect.mul for
        vector multiplies and vect.alu for SSRA.
        * config/arm/aarch-common-protos.h (struct vector_cost_table): Define
        vect.mul cost field.
        * config/arm/aarch-cost-tables.h: Add entries for vect.mul.
        * config/arm/arm.c: Likewise.

2021-02-09  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98863
        * tree-ssa-sccvn.h (vn_avail::next_undo): Add.
        * tree-ssa-sccvn.c (last_pushed_avail): New global.
        (rpo_elim::eliminate_push_avail): Chain pushed avails.
        (unwind_state::avail_top): Add.
        (do_unwind): Rewrite unwinding of avail entries.
        (do_rpo_vn): Initialize last_pushed_avail and
        avail_top of the undo state.

2021-02-09  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/99004
        * calls.c (maybe_warn_rdwr_sizes): Change s0 and s1 type from
        const char * to char * and free those pointers after use.

2021-02-09  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/99017
        * tree-vect-slp.c (vect_bb_vectorization_profitable_p): Allow
        zero vector cost entries.

2021-02-08  Andre Vieira  <andre.simoesdiasvieira@arm.com>

        PR middle-end/98974
        * tree-vect-stmts.c (vectorizable_condition): Remove shadow vec_num
        parameter in vectorizable_condition.

2021-02-08  Richard Biener  <rguenther@suse.de>

        PR lto/96591
        * tree.c (walk_tree_1): Walk VECTOR_CST elements.

2021-02-08  Martin Liska  <mliska@suse.cz>

        PR lto/98971
        * cfgexpand.c (pass_expand::execute): Parse per-function option
        flag_patchable_function_entry and use it.
        * common.opt: Remove function_entry_patch_area_size and
        function_entry_patch_area_start global variables.
        * opts.c (parse_and_check_patch_area): New function.
        (common_handle_option): Use it.
        * opts.h (parse_and_check_patch_area): New function.
        * toplev.c (process_options): Parse and use
        function_entry_patch_area_size.

2021-02-08  Martin Sebor  <msebor@redhat.com>

        * doc/extend.texi (attribute malloc): Correct typos.

2021-02-05  Nathan Sidwell  <nathan@acm.org>

        PR driver/98943
        * gcc.c (driver::maybe_run_linker): Check for input file
        accessibility if not linking.

2021-02-05  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98855
        * tree-vectorizer.h (add_stmt_cost): New overload.
        * tree-vect-slp.c (li_cost_vec_cmp): New.
        (vect_bb_slp_scalar_cost): Cost individual loop regions
        separately.  Account for the scalar instance root stmt.

2021-02-05  Tom de Vries  <tdevries@suse.de>

        PR debug/98656
        * tree-switch-conversion.c (jump_table_cluster::emit): Add loc
        argument.
        (bit_test_cluster::emit): Reuse location_t for newly created
        gswitch statement.
        (switch_decision_tree::try_switch_expansion): Preserve
        location_t.
        * tree-switch-conversion.h: Change function signatures.

2021-02-05  Jakub Jelinek  <jakub@redhat.com>

        PR target/98957
        * config/i386/i386-options.c (m_NONE, m_ALL): Define.
        * config/i386/x86-tune.def (X86_TUNE_BRANCH_PREDICTION_HINTS,
        X86_TUNE_PROMOTE_QI_REGS): Use m_NONE instead of 0U.
        (X86_TUNE_QIMODE_MATH): Use m_ALL instead of ~0U.

2021-02-05  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (get_high): Define builtin.
        * config/aarch64/aarch64-simd.md (aarch64_get_high<mode>): Define.
        * config/aarch64/arm_neon.h (__GET_HIGH): Delete.
        (vget_high_f16): Reimplement using new builtin.
        (vget_high_f32): Likewise.
        (vget_high_f64): Likewise.
        (vget_high_p8): Likewise.
        (vget_high_p16): Likewise.
        (vget_high_p64): Likewise.
        (vget_high_s8): Likewise.
        (vget_high_s16): Likewise.
        (vget_high_s32): Likewise.
        (vget_high_s64): Likewise.
        (vget_high_u8): Likewise.
        (vget_high_u16): Likewise.
        (vget_high_u32): Likewise.
        (vget_high_u64): Likewise.

2021-02-05  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (get_low): Define builtin.
        * config/aarch64/aarch64-simd.md (aarch64_get_low<mode>): Define.
        * config/aarch64/arm_neon.h (__GET_LOW): Delete.
        (vget_low_f16): Reimplement using new builtin.
        (vget_low_f32): Likewise.
        (vget_low_f64): Likewise.
        (vget_low_p8): Likewise.
        (vget_low_p16): Likewise.
        (vget_low_p64): Likewise.
        (vget_low_s8): Likewise.
        (vget_low_s16): Likewise.
        (vget_low_s32): Likewise.
        (vget_low_s64): Likewise.
        (vget_low_u8): Likewise.
        (vget_low_u16): Likewise.
        (vget_low_u32): Likewise.
        (vget_low_u64): Likewise.

2021-02-05  Kito Cheng  <kito.cheng@sifive.com>

        * gcc.c (print_multilib_info): Check all required argument is provided
        by default arg.

2021-02-05  liuhongt  <hongtao.liu@intel.com>

        PR target/98537
        * config/i386/i386-expand.c (ix86_expand_sse_cmp): Don't
        generate integer mask comparison for 128/256-bits vector when
        op_true/op_false is NULL_RTX or CONSTM1_RTX/CONST0_RTX. Also
        delete redundant !maskcmp condition.
        (ix86_expand_int_vec_cmp): Ditto but no redundant deletion
        here.
        (ix86_expand_sse_movcc): Delete definition of maskcmp, add the
        condition directly to if (maskcmp), add extra check for
        cmpmode, it should be MODE_INT.
        (ix86_expand_fp_vec_cmp): Pass NULL to ix86_expand_sse_cmp's
        parameters op_true/op_false.
        (ix86_use_mask_cmp_p): New.

2021-02-05  liuhongt  <hongtao.liu@intel.com>

        PR target/98172
        * config/i386/x86-tune.def (X86_TUNE_AVX256_UNALIGNED_LOAD_OPTIMAL):
        Remove m_GENERIC from ~list.
        (X86_TUNE_AVX256_UNALIGNED_STORE_OPTIMAL): Ditto.

2021-02-04  David Malcolm  <dmalcolm@redhat.com>

        PR c/97932
        * diagnostic-show-locus.c (compatible_locations_p): Require
        locations in the same macro map to be either both from the
        macro definition, or both from the macro arguments.

2021-02-04  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add
        [su]mull_hi_lane[q] builtin generator macros.
        * config/aarch64/aarch64-simd.md
        (aarch64_<su>mull_hi_lane<mode>_insn): Define.
        (aarch64_<su>mull_hi_lane<mode>): Define.
        (aarch64_<su>mull_hi_laneq<mode>_insn): Define.
        (aarch64_<su>mull_hi_laneq<mode>): Define.
        * config/aarch64/arm_neon.h (vmull_high_lane_s16): Use RTL
        builtin instead of inline asm.
        (vmull_high_lane_s32): Likewise.
        (vmull_high_lane_u16): Likewise.
        (vmull_high_lane_u32): Likewise.
        (vmull_high_laneq_s16): Likewise.
        (vmull_high_laneq_s32): Likewise.
        (vmull_high_laneq_u16): Likewise.
        (vmull_high_laneq_u32): Liekwise.

2021-02-04  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add [su]mull_hi_n
        builtin generator macros.
        * config/aarch64/aarch64-simd.md
        (aarch64_<su>mull_hi_n<mode>_insn): Define.
        (aarch64_<su>mull_hi_n<mode>): Define.
        * config/aarch64/arm_neon.h (vmull_high_n_s16): Use RTL builtin
        instead of inline asm.
        (vmull_high_n_s32): Likewise.
        (vmull_high_n_u16): Likewise.
        (vmull_high_n_u32): Likewise.

2021-02-04  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98855
        * tree-vect-loop.c (vectorizable_phi): Do not cost
        single-argument PHIs.
        * tree-vect-slp.c (vect_bb_slp_scalar_cost): Likewise.
        * tree-vect-stmts.c (vectorizable_bswap): Also perform
        costing for SLP operation.

2021-02-04  Martin Liska  <mliska@suse.cz>

        * doc/extend.texi: Mention -mprefer-vector-width in target
        attributes.

2021-02-03  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/98937
        * tree-ssa-strlen.c (strlen_dom_walker::~strlen_dom_walker): Define.
        Flush pointer_query cache.

2021-02-03  Aaron Sawdey  <acsawdey@linux.ibm.com>

        * config/rs6000/genfusion.pl (gen_2logical): Add missing
        fixes based on patch review.
        * config/rs6000/fusion.md: Regenerate file.

2021-02-03  Aaron Sawdey  <acsawdey@linux.ibm.com>

        * config/rs6000/t-rs6000: Comment out auto generation of
        fusion.md for now.

2021-02-03  Andrew Stubbs  <ams@codesourcery.com>

        * config/gcn/gcn-opts.h (enum processor_type): Add PROCESSOR_GFX908.
        * config/gcn/gcn.c (gcn_omp_device_kind_arch_isa): Add gfx908.
        (output_file_start): Add gfx908.
        * config/gcn/gcn.opt (gpu_type): Add gfx908.
        * config/gcn/t-gcn-hsa (MULTILIB_OPTIONS): Add march=gfx908.
        (MULTILIB_DIRNAMES): Add gfx908.
        * config/gcn/mkoffload.c (EF_AMDGPU_MACH_AMDGCN_GFX908): New define.
        (main): Recognize gfx908.
        * config/gcn/t-omp-device: Add gfx908.

2021-02-03  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add
        [su]mlsl_hi_lane[q] builtin macro generators.
        * config/aarch64/aarch64-simd.md
        (aarch64_<su>mlsl_hi_lane<mode>_insn): Define.
        (aarch64_<su>mlsl_hi_lane<mode>): Define.
        (aarch64_<su>mlsl_hi_laneq<mode>_insn): Define.
        (aarch64_<su>mlsl_hi_laneq<mode>): Define.
        * config/aarch64/arm_neon.h (vmlsl_high_lane_s16): Use RTL
        builtin instead of inline asm.
        (vmlsl_high_lane_s32): Likewise.
        (vmlsl_high_lane_u16): Likewise.
        (vmlsl_high_lane_u32): Likewise.
        (vmlsl_high_laneq_s16): Likewise.
        (vmlsl_high_laneq_s32): Likewise.
        (vmlsl_high_laneq_u16): Likewise.
        (vmlsl_high_laneq_u32): Likewise.
        (vmlal_high_laneq_u32): Likewise.

2021-02-03  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add
        [su]mlal_hi_lane[q] builtin generator macros.
        * config/aarch64/aarch64-simd.md
        (aarch64_<su>mlal_hi_lane<mode>_insn): Define.
        (aarch64_<su>mlal_hi_lane<mode>): Define.
        (aarch64_<su>mlal_hi_laneq<mode>_insn): Define.
        (aarch64_<su>mlal_hi_laneq<mode>): Define.
        * config/aarch64/arm_neon.h (vmlal_high_lane_s16): Use RTL
        builtin instead of inline asm.
        (vmlal_high_lane_s32): Likewise.
        (vmlal_high_lane_u16): Likewise.
        (vmlal_high_lane_u32): Likewise.
        (vmlal_high_laneq_s16): Likewise.
        (vmlal_high_laneq_s32): Likewise.
        (vmlal_high_laneq_u16): Likewise.
        (vmlal_high_laneq_u32): Likewise.

2021-02-03  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add [su]mlsl_hi_n
        builtin generator macros.
        * config/aarch64/aarch64-simd.md (aarch64_<su>mlsl_hi_n<mode>_insn):
        Define.
        (aarch64_<su>mlsl_hi_n<mode>): Define.
        * config/aarch64/arm_neon.h (vmlsl_high_n_s16): Use RTL builtin
        instead of inline asm.
        (vmlsl_high_n_s32): Likewise.
        (vmlsl_high_n_u16): Likewise.
        (vmlsl_high_n_u32): Likewise.

2021-02-03  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add [su]mlal_hi_n
        builtin generator macros.
        * config/aarch64/aarch64-simd.md (aarch64_<su>mlal_hi_n<mode>_insn):
        Define.
        (aarch64_<su>mlal_hi_n<mode>): Define.
        * config/aarch64/arm_neon.h (vmlal_high_n_s16): Use RTL builtin
        instead of inline asm.
        (vmlal_high_n_s32): Likewise.
        (vmlal_high_n_u16): Likewise.
        (vmlal_high_n_u32): Likewise.

2021-02-03  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add RTL builtin
        generator macros.
        * config/aarch64/aarch64-simd.md (*aarch64_<su>mlal_hi<mode>):
        Rename to...
        (aarch64_<su>mlal_hi<mode>_insn): This.
        (aarch64_<su>mlal_hi<mode>): Define.
        * config/aarch64/arm_neon.h (vmlal_high_s8): Use RTL builtin
        instead of inline asm.
        (vmlal_high_s16): Likewise.
        (vmlal_high_s32): Likewise.
        (vmlal_high_u8): Likewise.
        (vmlal_high_u16): Likewise.
        (vmlal_high_u32): Likewise.

2021-02-03  Ilya Leoshkevich  <iii@linux.ibm.com>

        * lra-spills.c (remove_pseudos): Call lra_update_insn_recog_data()
        after calling alter_subreg() on a (mem).

2021-02-03  Martin Liska  <mliska@suse.cz>

        PR lto/98912
        * lto-streamer-out.c (produce_lto_section): Fill up missing
        padding.
        * lto-streamer.h (struct lto_section): Add _padding field.

2021-02-03  Richard Biener  <rguenther@suse.de>

        * lto-streamer.c (lto_get_section_name): Free temporary
        buffer.
        * tree-loop-distribution.c
        (loop_distribution::merge_dep_scc_partitions): Free edge data.

2021-02-03  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/97487
        * ifcvt.c (noce_can_force_operand): New function.
        (noce_emit_move_insn): Use it.
        (noce_try_sign_mask): Likewise.  Formatting fix.

2021-02-03  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/97971
        * lra-constraints.c (process_alt_operands): For inline asm, don't call
        fatal_insn, but instead return false.

2021-02-03  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/98287
        * config/i386/mmx.md (<insn><mode>3): For shifts don't enable expander
        for V1DImode.

2021-02-03  Tamar Christina  <tamar.christina@arm.com>

        PR tree-optimization/98928
        * tree-vect-loop.c (vect_analyze_loop_2): Change
        STMT_VINFO_SLP_VECT_ONLY to STMT_VINFO_SLP_VECT_ONLY_PATTERN.
        * tree-vect-slp-patterns.c (complex_pattern::build): Likewise.
        * tree-vectorizer.h (STMT_VINFO_SLP_VECT_ONLY_PATTERN): New.
        (class _stmt_vec_info): Add slp_vect_pattern_only_p.

2021-02-02  Richard Biener  <rguenther@suse.de>

        * gimple-loop-interchange.cc (prepare_data_references):
        Release vectors.
        * gimple-loop-jam.c (tree_loop_unroll_and_jam): Likewise.
        * tree-ssa-loop-im.c (hoist_memory_references): Likewise.
        * tree-vect-stmts.c (vectorizable_condition): Do not
        allocate vectors.
        (vectorizable_comparison): Likewise.

2021-02-02  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (ursqrte): Define builtin.
        * config/aarch64/aarch64-simd.md (aarch64_ursqrte<mode>): New pattern.
        * config/aarch64/arm_neon.h (vrsqrte_u32): Reimplement using builtin.
        (vrsqrteq_u32): Likewise.

2021-02-02  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (sqxtun2): Define builtin.
        * config/aarch64/aarch64-simd.md (aarch64_sqxtun2<mode>_le): Define.
        (aarch64_sqxtun2<mode>_be): Likewise.
        (aarch64_sqxtun2<mode>): Likewise.
        * config/aarch64/arm_neon.h (vqmovun_high_s16): Reimplement using builtin.
        (vqmovun_high_s32): Likewise.
        (vqmovun_high_s64): Likewise.
        * config/aarch64/iterators.md (UNSPEC_SQXTUN2): Define.

2021-02-02  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (bfdot_lane, bfdot_laneq): Use
        AUTO_FP flags.
        (bfmlalb_lane, bfmlalt_lane, bfmlalb_lane_q, bfmlalt_lane_q): Use FP flags.

2021-02-02  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (fcmla_lane0, fcmla_lane90,
        fcmla_lane180, fcmla_lane270, fcmlaq_lane0, fcmlaq_lane90, fcmlaq_lane180,
        fcmlaq_lane270, scvtf, ucvtf, fcvtzs, fcvtzu, scvtfsi, scvtfdi, ucvtfsi,
        ucvtfdi, fcvtzshf, fcvtzuhf, fmlal_lane_low, fmlsl_lane_low,
        fmlal_laneq_low, fmlsl_laneq_low, fmlalq_lane_low, fmlslq_lane_low,
        fmlalq_laneq_low, fmlslq_laneq_low, fmlal_lane_high, fmlsl_lane_high,
        fmlal_laneq_high, fmlsl_laneq_high, fmlalq_lane_high, fmlslq_lane_high,
        fmlalq_laneq_high, fmlslq_laneq_high): Use FP flags.

2021-02-02  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-builtins.c (FLAG_LOAD): Define.
        * config/aarch64/aarch64-simd-builtins.def (ld1x2, ld2, ld3, ld4, ld2r,
        ld3r, ld4r, ld1, ld1x3, ld1x4): Use LOAD flags.

2021-02-02  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (combine, zip1, zip2,
        uzp1, uzp2, trn1, trn2, simd_bsl): Use AUTO_FP flags.

2021-02-02  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (clrsb, clz, ctz, popcount,
        vec_smult_lane_, vec_smlal_lane_, vec_smult_laneq_, vec_smlal_laneq_,
        vec_umult_lane_, vec_umlal_lane_, vec_umult_laneq_, vec_umlal_laneq_,
        ashl, sshl, ushl, srshl, urshl, sdot_lane, udot_lane, sdot_laneq,
        udot_laneq, usdot_lane, usdot_laneq, sudot_lane, sudot_laneq, ashr,
        ashr_simd, lshr, lshr_simd, srshr_n, urshr_n, ssra_n, usra_n, srsra_n,
        ursra_n, sshll_n, ushll_n, sshll2_n, ushll2_n, ssri_n, usri_n, ssli_n,
        ssli_n, usli_n, bswap, rbit, simd_bsl, eor3q, rax1q, xarq, bcaxq): Use
        NONE builtin flags.

2021-02-02  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/98848
        * tree-vect-patterns.c (vect_recog_over_widening_pattern): Punt if
        STMT_VINFO_DEF_TYPE (last_stmt_info) is vect_reduction_def.

2021-02-02  Kito Cheng  <kito.cheng@sifive.com>

        PR target/98743
        * expr.c: Check mode before calling store_expr.

2021-02-02  Christophe Lyon  <christophe.lyon@linaro.org>

        * config/arm/iterators.md (supf): Remove VORNQ_S and VORNQ_U.
        (VORNQ): Remove.
        * config/arm/mve.md (mve_vornq_s<mode>): New entry for vorn
        instruction using expression ior.
        (mve_vornq_u<mode>): New expander.
        (mve_vornq_f<mode>): Use ior code instead of unspec.
        * config/arm/unspecs.md (VORNQ_S, VORNQ_U, VORNQ_F): Remove.

2021-02-02  Alexandre Oliva  <oliva@adacore.com>

        * tree-nested.c (convert_nonlocal_reference_op): Move
        current_function_decl restore after re-gimplification.
        (convert_local_reference_op): Likewise.

2021-02-01  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (rshrn, rshrn2):
        Define builtins.
        * config/aarch64/aarch64-simd.md (aarch64_rshrn<mode>_insn_le):
        Define.
        (aarch64_rshrn<mode>_insn_be): Likewise.
        (aarch64_rshrn<mode>): Likewise.
        (aarch64_rshrn2<mode>_insn_le): Likewise.
        (aarch64_rshrn2<mode>_insn_be): Likewise.
        (aarch64_rshrn2<mode>): Likewise.
        * config/aarch64/aarch64.md (unspec): Add UNSPEC_RSHRN.
        * config/aarch64/arm_neon.h (vrshrn_high_n_s16): Reimplement
        using builtin.
        (vrshrn_high_n_s32): Likewise.
        (vrshrn_high_n_s64): Likewise.
        (vrshrn_high_n_u16): Likewise.
        (vrshrn_high_n_u32): Likewise.
        (vrshrn_high_n_u64): Likewise.
        (vrshrn_n_s16): Likewise.
        (vrshrn_n_s32): Likewise.
        (vrshrn_n_s64): Likewise.
        (vrshrn_n_u16): Likewise.
        (vrshrn_n_u32): Likewise.
        (vrshrn_n_u64): Likewise.

2021-02-01  Sergei Trofimovich  <siarheit@google.com>

        PR tree-optimization/98499
        * ipa-modref.c (analyze_ssa_name_flags): treat RVO
        conservatively and assume all possible side-effects.

2021-02-01  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (vec_unpacks_hi,
        vec_unpacku_hi_): Define builtins.
        * config/aarch64/arm_neon.h (vmovl_high_s8): Reimplement using
        builtin.
        (vmovl_high_s16): Likewise.
        (vmovl_high_s32): Likewise.
        (vmovl_high_u8): Likewise.
        (vmovl_high_u16): Likewise.
        (vmovl_high_u32): Likewise.

2021-02-01  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (sabdl, uabdl):
        Define builtins.
        * config/aarch64/aarch64-simd.md (aarch64_<sur>abdl<mode>): New
        pattern.
        * config/aarch64/aarch64.md (unspec): Define UNSPEC_SABDL,
        UNSPEC_UABDL.
        * config/aarch64/arm_neon.h (vabdl_s8): Reimplemet using
        builtin.
        (vabdl_s16): Likewise.
        (vabdl_s32): Likewise.
        (vabdl_u8): Likewise.
        (vabdl_u16): Likewise.
        (vabdl_u32): Likewise.
        * config/aarch64/iterators.md (ABDL): New int iterator.
        (sur): Handle UNSPEC_SABDL, UNSPEC_UABDL.

2021-02-01  Martin Sebor  <msebor@redhat.com>

        * tree.h (BLOCK_VARS): Add comment.
        (BLOCK_SUBBLOCKS): Same.
        (BLOCK_SUPERCONTEXT): Same.
        (BLOCK_ABSTRACT_ORIGIN): Same.
        (inlined_function_outer_scope_p): Same.

2021-02-01  Martin Sebor  <msebor@redhat.com>

        PR middle-end/97172
        * attribs.c (attr_access::free_lang_data): Define new function.
        * attribs.h (attr_access::free_lang_data): Declare new function.

2021-02-01  Richard Biener  <rguenther@suse.de>

        * vec.h (auto_vec::auto_vec): Add memory stat parameters
        and pass them on.
        * bitmap.h (auto_bitmap::auto_bitmap): Likewise.

2021-02-01  Tamar Christina  <tamar.christina@arm.com>

        * config/aarch64/aarch64-simd.md (aarch64_<su>mlal_n<mode>,
        aarch64_<su>mlsl<mode>, aarch64_<su>mlsl_n<mode>): Flip mult operands.

2021-02-01  Richard Biener  <rguenther@suse.de>

        PR rtl-optimization/98863
        * config/i386/i386-features.c (convert_scalars_to_vector):
        Set DF_RD_PRUNE_DEAD_DEFS.

2021-01-31  Eric Botcazou  <ebotcazou@adacore.com>

        * system.h (SIZE_MAX): Define if not already defined.

2021-01-30  Aaron Sawdey  <acsawdey@linux.ibm.com>

        * config/rs6000/genfusion.pl (gen_2logical): New function to
        generate patterns for logical-logical fusion.
        * config/rs6000/fusion.md: Regenerated patterns.
        * config/rs6000/rs6000-cpus.def: Add
        OPTION_MASK_P10_FUSION_2LOGICAL.
        * config/rs6000/rs6000.c (rs6000_option_override_internal):
        Enable logical-logical fusion for p10.
        * config/rs6000/rs6000.opt: Add -mpower10-fusion-2logical.

2021-01-30  David Edelsohn  <dje.gcc@gmail.com>

        * config/rs6000/rs6000.opt: Add periods to new AIX options.

2021-01-30  David Edelsohn  <dje.gcc@gmail.com>

        * config/rs6000/rs6000.opt (mabi=vec-extabi): New.
        (mabi=vec-default): New.
        * config/rs6000/rs6000-c.c (rs6000_target_modify_macros): Define
        __EXTABI__ for AIX Vector extended ABI.
        * config/rs6000/rs6000.c (rs6000_debug_reg_global): Print AIX Vector
        extabi info.
        (conditional_register_usage): If AIX vec_extabi enabled, vs20-vs31
        are non-volatile.
        * doc/invoke.texi (PowerPC mabi): Add AIX vec-extabi and vec-default.

2021-01-30  Jakub Jelinek  <jakub@redhat.com>

        * config/i386/i386-features.c (remove_partial_avx_dependency): Clear
        DF_DEFER_INSN_RESCAN after calling df_process_deferred_rescans.

2021-01-29  Vladimir N. Makarov  <vmakarov@redhat.com>

        PR target/97701
        * lra-constraints.c (in_class_p): Don't narrow class only for REG
        or MEM.

2021-01-29  Will Schmidt  <will_schmidt@vnet.ibm.com>

        * config/rs6000/rs6000-call.c (rs6000_expand_binup_builtin): Add
        clauses for CODE_FOR_vsx_xvcvuxddp_scale and
        CODE_FOR_vsx_xvcvsxddp_scale to the parameter checking code.

2021-01-29  Andrew MacLeod  <amacleod@redhat.com>

        PR tree-optimization/98866
        * gimple-range-gori.h (gori_compute:set_range_invariant): New.
        * gimple-range-gori.cc (gori_map::set_range_invariant): New.
        (gori_map::m_maybe_invariant): Rename from all_outgoing.
        (gori_map::gori_map): Rename all_outgoing to m_maybe_invariant.
        (gori_map::is_export_p): Ditto.
        (gori_map::calculate_gori): Ditto.
        (gori_compute::set_range_invariant): New.
        * gimple-range.cc (gimple_ranger::range_of_stmt): Set range
        invariant for pointers evaluating to [1, +INF].

2021-01-29  Richard Biener  <rguenther@suse.de>

        PR rtl-optimization/98863
        * config/i386/i386-features.c (remove_partial_avx_dependency):
        Do not perform DF analysis.
        (pass_data_remove_partial_avx_dependency): Remove
        TODO_df_finish.

2021-01-29  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add [su]mull_n
        builtin generator macros.
        * config/aarch64/aarch64-simd.md (aarch64_<su>mull_n<mode>):
        Define.
        * config/aarch64/arm_neon.h (vmull_n_s16): Use RTL builtin
        instead of inline asm.
        (vmull_n_s32): Likewise.
        (vmull_n_u16): Likewise.
        (vmull_n_u32): Likewise.

2021-01-29  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (sabdl2, uabdl2):
        Define builtins.
        * config/aarch64/aarch64-simd.md (aarch64_<sur>abdl2<mode>_3):
        Rename to...
        (aarch64_<sur>abdl2<mode>): ... This.
        (<sur>sadv16qi): Adjust use of above.
        * config/aarch64/arm_neon.h (vabdl_high_s8): Reimplement using
        builtin.
        (vabdl_high_s16): Likewise.
        (vabdl_high_s32): Likewise.
        (vabdl_high_u8): Likewise.
        (vabdl_high_u16): Likewise.
        (vabdl_high_u32): Likewise.

2021-01-29  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (sabal2): Define
        builtin.
        (uabal2): Likewise.
        * config/aarch64/aarch64-simd.md (aarch64_<sur>abal2<mode>): New
        pattern.
        * config/aarch64/aarch64.md (unspec): Add UNSPEC_SABAL2 and
        UNSPEC_UABAL2.
        * config/aarch64/arm_neon.h (vabal_high_s8): Reimplement using
        builtin.
        (vabal_high_s16): Likewise.
        (vabal_high_s32): Likewise.
        (vabal_high_u8): Likewise.
        (vabal_high_u16): Likewise.
        (vabal_high_u32): Likewise.
        * config/aarch64/iterators.md (ABAL2): New mode iterator.
        (sur): Handle UNSPEC_SABAL2, UNSPEC_UABAL2.

2021-01-29  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (sabal): Define
        builtin.
        (uabal): Likewise.
        * config/aarch64/aarch64-simd.md (aarch64_<sur>abal<mode>_4):
        Rename to...
        (aarch64_<sur>abal<mode>): ... This
        (<sur>sadv16qi): Adust use of the above.
        * config/aarch64/arm_neon.h (vabal_s8): Reimplement using
        builtin.
        (vabal_s16): Likewise.
        (vabal_s32): Likewise.
        (vabal_u8): Likewise.
        (vabal_u16): Likewise.
        (vabal_u32): Likewise.

2021-01-29  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (saddlv, uaddlv):
        Define builtins.
        * config/aarch64/aarch64-simd.md (aarch64_<su>addlv<mode>):
        Define.
        * config/aarch64/arm_neon.h (vaddlv_s8): Reimplement using
        builtin.
        (vaddlv_s16): Likewise.
        (vaddlv_u8): Likewise.
        (vaddlv_u16): Likewise.
        (vaddlvq_s8): Likewise.
        (vaddlvq_s16): Likewise.
        (vaddlvq_s32): Likewise.
        (vaddlvq_u8): Likewise.
        (vaddlvq_u16): Likewise.
        (vaddlvq_u32): Likewise.
        (vaddlv_s32): Likewise.
        (vaddlv_u32): Likewise.
        * config/aarch64/iterators.md (VDQV_L): New mode iterator.
        (unspec): Add UNSPEC_SADDLV, UNSPEC_UADDLV.
        (Vwstype): New mode attribute.
        (Vwsuf): Likewise.
        (VWIDE_S): Likewise.
        (USADDLV): New int iterator.
        (su): Handle UNSPEC_SADDLV, UNSPEC_UADDLV.

2021-01-29  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add [su]mlsl_lane[q]
        builtin generator macros.
        * config/aarch64/aarch64-simd.md (aarch64_vec_<su>mlsl_lane<Qlane>):
        Define.
        * config/aarch64/arm_neon.h (vmlsl_lane_s16): Use RTL builtin
        instead of inline asm.
        (vmlsl_lane_s32): Likewise.
        (vmlsl_lane_u16): Likewise.
        (vmlsl_lane_u32): Likewise.
        (vmlsl_laneq_s16): Likewise.
        (vmlsl_laneq_s32): Likewise.
        (vmlsl_laneq_u16): Likewise.
        (vmlsl_laneq_u32): Likewise.

2021-01-29  Richard Biener  <rguenther@suse.de>

        * doc/invoke.texi (--param max-gcse-memory): Document unit
        of size.
        * gcse.c (gcse_or_cprop_is_too_expensive): Adjust.
        * params.opt (--param max-gcse-memory): Adjust default and
        document unit of size.

2021-01-29  Richard Biener  <rguenther@suse.de>

        PR rtl-optimization/98863
        * gcse.c (gcse_or_cprop_is_too_expensive): Use unsigned
        HOST_WIDE_INT for the memory estimate.

2021-01-29  Bin Cheng  <bin.cheng@linux.alibaba.com>
            Richard Biener  <rguenther@suse.de>

        PR tree-optimization/97627
        * tree-ssa-loop-niter.c (number_of_iterations_exit_assumptions):
        Do not analyze fake edges.

2021-01-29  Richard Biener  <rguenther@suse.de>

        PR rtl-optimization/98144
        * df.h (df_mir_bb_info): Add con_visited member.
        * df-problems.c (df_mir_alloc): Initialize con_visited,
        do not fully populate IN and OUT.
        (df_mir_reset): Likewise.
        (df_mir_confluence_0): Set con_visited.
        (df_mir_confluence_n): Properly handle implicitely
        fully populated IN and OUT as designated by con_visited
        and update con_visited accordingly.

2021-01-29  Jakub Jelinek  <jakub@redhat.com>

        PR target/98849
        * config/arm/vec-common.md (mve_vshlq_<supf><mode>,
        vashl<mode>3, vashr<mode>3, vlshr<mode>3): Add
        && !TARGET_REALLY_IWMMXT to conditions.

2021-01-29  Jakub Jelinek  <jakub@redhat.com>

        PR debug/98331
        * cfgbuild.c (find_bb_boundaries): Reset debug_insn when seeing
        a BARRIER.

2021-01-28  Marek Polacek  <polacek@redhat.com>

        PR c++/94775
        * stor-layout.c (finalize_type_size): If we reset TYPE_USER_ALIGN in
        the main variant, maybe reset it in its variants too.
        * tree.c (check_base_type): Return true only if TYPE_USER_ALIGN match.
        (check_aligned_type): Check if TYPE_USER_ALIGN match.

2021-01-28  Christophe Lyon  <christophe.lyon@linaro.org>

        PR target/98730
        * config/arm/arm.c (arm_rtx_costs_internal): Adjust cost of vector
        of constant zero for comparisons.

2021-01-28  Michael Meissner  <meissner@linux.ibm.com>

        * config/rs6000/rs6000.c (rs6000_mangle_decl_assembler_name): Add
        support for mapping built-in function names for long double
        built-in functions if long double is IEEE 128-bit.

2021-01-28  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add [su]mlsl_n
        builtin generator macros.
        * config/aarch64/aarch64-simd.md (aarch64_<su>mlsl_n<mode>):
        Define.
        * config/aarch64/arm_neon.h (vmlsl_n_s16): Use RTL builtin
        instead of inline asm.
        (vmlsl_n_s32): Likewise.
        (vmlsl_n_u16): Likewise.
        (vmlsl_n_u32): Likewise.

2021-01-28  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add [su]mlal_n
        builtin generator macros.
        * config/aarch64/aarch64-simd.md (aarch64_<su>mlal_n<mode>):
        Define.
        * config/aarch64/arm_neon.h (vmlal_n_s16): Use RTL builtin
        instead of inline asm.
        (vmlal_n_s32): Likewise.
        (vmlal_n_u16): Likewise.
        (vmlal_n_u32): Likewise.

2021-01-28  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (shrn2): Define
        builtin.
        * config/aarch64/aarch64-simd.md (aarch64_shrn2<mode>_insn_le):
        Define.
        (aarch64_shrn2<mode>_insn_be): Likewise.
        (aarch64_shrn2<mode>): Likewise.
        * config/aarch64/arm_neon.h (vshrn_high_n_s16): Reimlplement
        using builtins.
        (vshrn_high_n_s32): Likewise.
        (vshrn_high_n_s64): Likewise.
        (vshrn_high_n_u16): Likewise.
        (vshrn_high_n_u32): Likewise.
        (vshrn_high_n_u64): Likewise.

2021-01-28  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (shrn): Define
        builtin.
        * config/aarch64/aarch64-simd.md (aarch64_shrn<mode>_insn_le):
        Define.
        (aarch64_shrn<mode>_insn_be): Likewise.
        (aarch64_shrn<mode>): Likewise.
        * config/aarch64/arm_neon.h (vshrn_n_s16): Reimplement using
        builtins.
        (vshrn_n_s32): Likewise.
        (vshrn_n_s64): Likewise.
        (vshrn_n_u16): Likewise.
        (vshrn_n_u32): Likewise.
        (vshrn_n_u64): Likewise.
        * config/aarch64/iterators.md (vn_mode): New mode attribute.

2021-01-28  Richard Biener  <rguenther@suse.de>

        PR rtl-optimization/80960
        * dse.c (check_mem_read_rtx): Call get_addr on the
        offsetted address.

2021-01-28  Xionghu Luo  <luoxhu@linux.ibm.com>
            David Edelsohn  <dje.gcc@gmail.com>

        PR target/98799
        * config/rs6000/rs6000-c.c (altivec_resolve_overloaded_builtin):
        Don't generate VIEW_CONVERT_EXPR for fcode ALTIVEC_BUILTIN_VEC_INSERT
        when -m32.
        * config/rs6000/rs6000-protos.h (rs6000_expand_vector_set_var):
        Delete.
        * config/rs6000/rs6000.c (rs6000_expand_vector_set): Remove the
        wrapper call rs6000_expand_vector_set_var for cleanup.  Call
        rs6000_expand_vector_set_var_p9 and rs6000_expand_vector_set_var_p8
        directly.
        (rs6000_expand_vector_set_var): Delete.
        (rs6000_expand_vector_set_var_p9): Make static.
        (rs6000_expand_vector_set_var_p8): Make static.

2021-01-28  Xing GUO  <higuoxing@gmail.com>

        * common/config/riscv/riscv-common.c
        (riscv_subset_list::parsing_subset_version): Fix -march option parsing
        when `p` extension exists.

2021-01-27  Vladimir N. Makarov  <vmakarov@redhat.com>

        PR rtl-optimization/97684
        * ira.c (ira): Call ira_set_pseudo_classes before
        update_equiv_regs when it is necessary.

2021-01-27  Jakub Jelinek  <jakub@redhat.com>

        PR target/98853
        * config/aarch64/aarch64.md (*aarch64_bfxilsi_uxtw): Use
        %w0, %w1 and %2 instead of %0, %1 and %2.

2021-01-27  Aaron Sawdey  <acsawdey@linux.ibm.com>

        * config/rs6000/genfusion.pl: New script to generate
        define_insn_and_split patterns so combine can arrange fused
        instructions next to each other.
        * config/rs6000/fusion.md: New file, generated fused instruction
        patterns for combine.
        * config/rs6000/predicates.md (const_m1_to_1_operand): New predicate.
        (non_update_memory_operand): New predicate.
        * config/rs6000/rs6000-cpus.def: Add OPTION_MASK_P10_FUSION and
        OPTION_MASK_P10_FUSION_LD_CMPI to ISA_3_1_MASKS_SERVER and
        POWERPC_MASKS.
        * config/rs6000/rs6000-protos.h (address_is_non_pfx_d_or_x): Add
        prototype.
        * config/rs6000/rs6000.c (rs6000_option_override_internal):
        Automatically set OPTION_MASK_P10_FUSION and
        OPTION_MASK_P10_FUSION_LD_CMPI if target is power10.
        (rs600_opt_masks): Allow -mpower10-fusion
        in function attributes.
        (address_is_non_pfx_d_or_x): New function.
        * config/rs6000/rs6000.h: Add MASK_P10_FUSION.
        * config/rs6000/rs6000.md: Include fusion.md.
        * config/rs6000/rs6000.opt: Add -mpower10-fusion
        and -mpower10-fusion-ld-cmpi.
        * config/rs6000/t-rs6000: Add dependencies involving fusion.md.

2021-01-27  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add [su]mlal
        builtin generator macros.
        * config/aarch64/aarch64-simd.md (*aarch64_<su>mlal<mode>):
        Rename to...
        (aarch64_<su>mlal<mode>): This.
        * config/aarch64/arm_neon.h (vmlal_s8): Use RTL builtin
        instead of inline asm.
        (vmlal_s16): Likewise.
        (vmlal_s32): Likewise.
        (vmlal_u8): Likewise.
        (vmlal_u16): Likewise.
        (vmlal_u32): Likewise.

2021-01-27  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98854
        * tree-vect-slp.c (vect_build_slp_tree_2): Also build
        PHIs from scalars when the number of CTORs matches the
        number of children.

2021-01-27  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add mls_n builtin
        generator macro.
        * config/aarch64/aarch64-simd.md (*aarch64_mls_elt_merge<mode>):
        Rename to...
        (aarch64_mls_n<mode>): This.
        * config/aarch64/arm_neon.h (vmls_n_s16): Use RTL builtin
        instead of asm.
        (vmls_n_s32): Likewise.
        (vmls_n_u16): Likewise.
        (vmls_n_u32): Likewise.
        (vmlsq_n_s16): Likewise.
        (vmlsq_n_s32): Likewise.
        (vmlsq_n_u16): Likewise.
        (vmlsq_n_u32): Likewise.

2021-01-27  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add mls builtin
        generator macro.
        * config/aarch64/arm_neon.h (vmls_s8): Use RTL builtin rather
        than asm.
        (vmls_s16): Likewise.
        (vmls_s32): Likewise.
        (vmls_u8): Likewise.
        (vmls_u16): Likewise.
        (vmls_u32): Likewise.
        (vmlsq_s8): Likewise.
        (vmlsq_s16): Likewise.
        (vmlsq_s32): Likewise.
        (vmlsq_u8): Likewise.
        (vmlsq_u16): Likewise.
        (vmlsq_u32): Likewise.

2021-01-27  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add mla_n builtin
        generator macro.
        * config/aarch64/aarch64-simd.md (*aarch64_mla_elt_merge<mode>):
        Rename to...
        (aarch64_mla_n<mode>): This.
        * config/aarch64/arm_neon.h (vmla_n_s16): Use RTL builtin
        instead of asm.
        (vmla_n_s32): Likewise.
        (vmla_n_u16): Likewise.
        (vmla_n_u32): Likewise.
        (vmlaq_n_s16): Likewise.
        (vmlaq_n_s32): Likewise.
        (vmlaq_n_u16): Likewise.
        (vmlaq_n_u32): Likewise.

2021-01-27  liuhongt  <hongtao.liu@intel.com>

        PR target/98833
        * config/i386/sse.md (sse2_gt<mode>3): Drop !TARGET_XOP in condition.
        (*sse2_eq<mode>3): Ditto.

2021-01-27  Jakub Jelinek  <jakub@redhat.com>

        * tree-pass.h (PROP_trees): Rename to ...
        (PROP_gimple): ... this.
        * cfgexpand.c (pass_data_expand): Replace PROP_trees with PROP_gimple.
        * passes.c (execute_function_dump, execute_function_todo,
        execute_one_ipa_transform_pass, execute_one_pass): Likewise.
        * varpool.c (ctor_for_folding): Likewise.

2021-01-27  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/97260
        * varpool.c: Include tree-pass.h.
        (ctor_for_folding): In GENERIC return DECL_INITIAL for TREE_READONLY
        non-TREE_SIDE_EFFECTS automatic variables.

2021-01-26  Paul Fee  <paul.f.fee@gmail.com>

        * doc/cpp.texi (__cplusplus): Document value for -std=c++23
        or -std=gnu++23.
        * doc/invoke.texi: Document -std=c++23 and -std=gnu++23.
        * dwarf2out.c (highest_c_language): Recognise C++20 and C++23.
        (gen_compile_unit_die): Recognise C++23.

2021-01-26  Jakub Jelinek  <jakub@redhat.com>

        PR bootstrap/98839
        * dwarf2asm.c (dw2_assemble_integer): Cast DWARF2_ADDR_SIZE to int
        in comparison.

2021-01-26  Jakub Jelinek  <jakub@redhat.com>

        PR target/98681
        * config/aarch64/aarch64.c (aarch64_mask_and_shift_for_ubfiz_p):
        Use UINTVAL (shft_amnt) and UINTVAL (mask) instead of INTVAL (shft_amnt)
        and INTVAL (mask).  Add && INTVAL (mask) > 0 condition.

2021-01-26  Richard Biener  <rguenther@suse.de>

        * gimple-pretty-print.c (dump_binary_rhs): Handle
        VEC_WIDEN_{PLUS,MINUS}_{LO,HI}_EXPR.

2021-01-26  Richard Biener  <rguenther@suse.de>

        PR middle-end/98726
        * tree.h (vector_cst_int_elt): Remove.
        * tree.c (vector_cst_int_elt): Use poly_wide_int for computations,
        make static.

2021-01-26  Andrew Stubbs  <ams@codesourcery.com>

        * config/gcn/gcn.c (gcn_expand_reduc_scalar): Use move instructions
        for V64DFmode min/max reductions.

2021-01-26  Jakub Jelinek  <jakub@redhat.com>

        * dwarf2asm.c (dw2_assemble_integer): Handle size twice as large
        as DWARF2_ADDR_SIZE if x is not a scalar int by emitting it as
        two halves, one with x and the other with const0_rtx, ordered
        depending on endianity.

2021-01-26  Alexandre Oliva  <oliva@adacore.com>

        * gimplify.c (gimplify_decl_expr): Skip asan marking calls for
        temporaries not seen in binding block, and not about to be
        added as gimple variables.

2021-01-25  Martin Sebor  <msebor@redhat.com>

        PR c++/98646
        * tree-ssa-ccp.c (pass_post_ipa_warn::execute): Adjust warning text.

2021-01-25  Martin Liska  <mliska@suse.cz>

        * value-prof.c (get_nth_most_common_value): Use %s instead
        of %qs string.

2021-01-25  Jakub Jelinek  <jakub@redhat.com>

        PR debug/98811
        * configure.ac (HAVE_AS_GDWARF_5_DEBUG_FLAG): Only define if
        readelf -wi is able to read the emitted .debug_info back.
        * configure: Regenerated.

2021-01-25  Martin Liska  <mliska@suse.cz>

        PR gcov-profile/98739
        * common.opt: Add missing sign symbol.
        * value-prof.c (get_nth_most_common_value): Restore handling
        of PROFILE_REPRODUCIBILITY_PARALLEL_RUNS and
        PROFILE_REPRODUCIBILITY_MULTITHREADED.

2021-01-25  Richard Biener  <rguenther@suse.de>

        PR middle-end/98807
        * tree.c (vector_element_bits): Always use precision of
        the element type for boolean vectors.

2021-01-25  Sebastian Huber  <sebastian.huber@embedded-brains.de>

        * config/rtems.h (STARTFILE_SPEC): Remove qnolinkcmds.
        (ENDFILE_SPEC): Evaluate qnolinkcmds.

2021-01-25  Sebastian Huber  <sebastian.huber@embedded-brains.de>

        * config/rtems.h (STARTFILE_SPEC): Remove nostdlib and
        nostartfiles handling since this is already done by
        LINK_COMMAND_SPEC.  Evaluate qnolinkcmds.
        (ENDFILE_SPEC): Remove nostdlib and nostartfiles handling since this
        is already done by LINK_COMMAND_SPEC.
        (LIB_SPECS): Remove nostdlib and nodefaultlibs handling since
        this is already done by LINK_COMMAND_SPEC.  Remove qnolinkcmds
        evaluation.

2021-01-25  Jakub Jelinek  <jakub@redhat.com>

        PR testsuite/98771
        * fold-const-call.c (host_size_t_cst_p): Renamed to ...
        (size_t_cst_p): ... this.  Check and store unsigned HOST_WIDE_INT
        value rather than host size_t.
        (fold_const_call): Change type of s2 from size_t to
        unsigned HOST_WIDE_INT.  Use size_t_cst_p instead of
        host_size_t_cst_p.  For strncmp calls, pass MIN (s2, SIZE_MAX)
        instead of s2 as last argument.

2021-01-25  Tamar Christina  <tamar.christina@arm.com>

        * config/arm/iterators.md (rotsplit1, rotsplit2, conj_op, fcmac1,
        VCMLA_OP, VCMUL_OP): New.
        * config/arm/mve.md (mve_vcmlaq<mve_rot><mode>): Support vec_dup 0.
        * config/arm/neon.md (cmul<conj_op><mode>3): New.
        * config/arm/unspecs.md (UNSPEC_VCMLA_CONJ, UNSPEC_VCMLA180_CONJ,
        UNSPEC_VCMUL_CONJ): New.
        * config/arm/vec-common.md (cmul<conj_op><mode>3, arm_vcmla<rot><mode>,
        cml<fcmac1><conj_op><mode>4): New.

2021-01-23  Jakub Jelinek  <jakub@redhat.com>

        PR testsuite/97301
        * config/rs6000/mmintrin.h (__m64): Add __may_alias__ attribute.

2021-01-22  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add mla builtin
        generator macro.
        * config/aarch64/arm_neon.h (vmla_s8): Use RTL builtin rather
        than asm.
        (vmla_s16): Likewise.
        (vmla_s32): Likewise.
        (vmla_u8): Likewise.
        (vmla_u16): Likewise.
        (vmla_u32): Likewise.
        (vmlaq_s8): Likewise.
        (vmlaq_s16): Likewise.
        (vmlaq_s32): Likewise.
        (vmlaq_u8): Likewise.
        (vmlaq_u16): Likewise.
        (vmlaq_u32): Likewise.

2021-01-22  David Malcolm  <dmalcolm@redhat.com>

        * doc/invoke.texi (GCC_EXTRA_DIAGNOSTIC_OUTPUT): Add @findex
        directive.

2021-01-22  Jakub Jelinek  <jakub@redhat.com>

        PR debug/98796
        * dwarf2out.c (output_file_names): For -gdwarf-5, if there are no
        filenames to emit, still emit the required 0 index directory and
        filename entries that match DW_AT_comp_dir and DW_AT_name of the
        compilation unit.

2021-01-22  Marek Polacek  <polacek@redhat.com>

        PR c++/98545
        * doc/invoke.texi: Update C++ ABI Version 15 description.

2021-01-22  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        PR tree-optimization/98766
        * tree-ssa-math-opts.c (convert_mult_to_fma): Use maybe_le when
        comparing against type size with param_avoid_fma_max_bits.

2021-01-22  Richard Biener  <rguenther@suse.de>

        PR middle-end/98793
        * tree.c (vector_element_bits): Key single-bit bool vector on
        integer mode rather than not vector mode.

2021-01-22  Xionghu Luo  <luoxhu@linux.ibm.com>

        PR target/98093
        * config/rs6000/rs6000-c.c (altivec_resolve_overloaded_builtin):
        Generate ARRAY_REF(VIEW_CONVERT_EXPR) for P8 and later
        platforms.
        * config/rs6000/rs6000.c (rs6000_expand_vector_set_var): Update
        to call different path for P8 and P9.
        (rs6000_expand_vector_set_var_p9): New function.
        (rs6000_expand_vector_set_var_p8): New function.

2021-01-22  Xionghu Luo  <luoxhu@linux.ibm.com>

        PR target/79251
        PR target/98065
        * config/rs6000/rs6000-c.c (altivec_resolve_overloaded_builtin):
        Ajdust variable index vec_insert from address dereference to
        ARRAY_REF(VIEW_CONVERT_EXPR) tree expression.
        * config/rs6000/rs6000-protos.h (rs6000_expand_vector_set_var):
        New declaration.
        * config/rs6000/rs6000.c (rs6000_expand_vector_set_var): New function.

2021-01-22  Martin Liska  <mliska@suse.cz>

        PR gcov-profile/98739
        * profile.c (compute_value_histograms): Drop time profile for
        -fprofile-reproducible=multithreaded.

2021-01-22  Nathan Sidwell  <nathan@acm.org>

        * gcc.c (process_command): Don't check OPT_SPECIAL_input_file
        existence here.

2021-01-22  Richard Biener  <rguenther@suse.de>

        PR middle-end/98773
        * tree-data-ref.c (initalize_matrix_A): Revert previous
        change, retaining failing on HOST_WIDE_INT_MIN CHREC_RIGHT.

2021-01-22  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/90248
        * match.pd (X cmp 0.0 ? 1.0 : -1.0 -> copysign(1, +-X),
        X cmp 0.0 ? -1.0 : +1.0 -> copysign(1, -+X)): Remove
        simplifications.
        (X * (X cmp 0.0 ? 1.0 : -1.0) -> +-abs(X),
        X * (X cmp 0.0 ? -1.0 : 1.0) -> +-abs(X)): New simplifications.

2021-01-22  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/98255
        * tree-dfa.c (get_ref_base_and_extent): For ARRAY_REFs, sign
        extend index - low_bound from sizetype's precision rather than index
        precision.
        (get_addr_base_and_unit_offset_1): Likewise.
        * tree-ssa-sccvn.c (ao_ref_init_from_vn_reference): Likewise.
        * gimple-fold.c (fold_const_aggregate_ref_1): Likewise.

2021-01-22  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98786
        * tree-ssa-phiopt.c (factor_out_conditional_conversion): Avoid
        adding new uses of abnormals.  Verify we deal with a conditional
        conversion.

2021-01-22  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

        PR target/98636
        * optc-save-gen.awk: Add arm_fp16_format to checked_options.

2021-01-22  liuhongt  <hongtao.liu@intel.com>

        PR target/96891
        PR target/98348
        * config/i386/sse.md (VI_128_256): New mode iterator.
        (*avx_cmp<mode>3_1, *avx_cmp<mode>3_2, *avx_cmp<mode>3_3,
         *avx_cmp<mode>3_4, *avx2_eq<mode>3, *avx2_pcmp<mode>3_1,
         *avx2_pcmp<mode>3_2, *avx2_gt<mode>3): New
        define_insn_and_split to lower avx512 vector comparison to avx
        version when dest is vector.
        (*<avx512>_cmp<mode>3,*<avx512>_cmp<mode>3,*<avx512>_ucmp<mode>3):
        define_insn_and_split for negating the comparison result.
        * config/i386/predicates.md (float_vector_all_ones_operand):
        New predicate.
        * config/i386/i386-expand.c (ix86_expand_sse_movcc): Use
        general NOT operator without UNSPEC_MASKOP.

2021-01-21  Vladimir N. Makarov  <vmakarov@redhat.com>

        PR rtl-optimization/98777
        * lra-int.h (lra_pmode_pseudo): New extern.
        * lra.c (lra_pmode_pseudo): New global.
        (lra): Set it up.
        * lra-eliminations.c (eliminate_regs_in_insn): Use it.

2021-01-21  Ilya Leoshkevich  <iii@linux.ibm.com>

        * fwprop.c (fwprop_propagation::classify_result): Allow
        (subreg (mem)) simplifications.

2021-01-21  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd.md (aarch64_sqdml<SBINQOPS:as>l<mode>):
        Split into...
        (aarch64_sqdmlal<mode>): ... This...
        (aarch64_sqdmlsl<mode>): ... And this.
        (aarch64_sqdml<SBINQOPS:as>l_lane<mode>): Split into...
        (aarch64_sqdmlal_lane<mode>): ... This...
        (aarch64_sqdmlsl_lane<mode>): ... And this.
        (aarch64_sqdml<SBINQOPS:as>l_laneq<mode>): Split into...
        (aarch64_sqdmlsl_laneq<mode>): ... This...
        (aarch64_sqdmlal_laneq<mode>):  ... And this.
        (aarch64_sqdml<SBINQOPS:as>l_n<mode>): Split into...
        (aarch64_sqdmlsl_n<mode>): ... This...
        (aarch64_sqdmlal_n<mode>): ... And this.
        (aarch64_sqdml<SBINQOPS:as>l2<mode>_internal): Split into...
        (aarch64_sqdmlal2<mode>_internal): ... This...
        (aarch64_sqdmlsl2<mode>_internal): ... And this.

2021-01-21  Christophe Lyon  <christophe.lyon@linaro.org>

        * config/arm/arm_mve.h (__arm_vcmpneq_s8): Fix return type.

2021-01-21  Andrea Corallo  <andrea.corallo@arm.com>

        PR target/96372
        * doc/sourcebuild.texi (arm_thumb2_no_arm_v8_1_lob): Document.

2021-01-21  liuhongt  <hongtao.liu@intel.com>

        PR rtl-optimization/98694
        * regcprop.c (copy_value): If SRC had been assigned a mode
        narrower than the copy, we can't link DEST into the chain even
        they have same hard_regno_nregs(i.e. HImode/SImode in i386
        backend).

2021-01-20  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd.md (aarch64_get_lane<mode>):
        Convert to define_insn_and_split.  Split into simple move when moving
        bottom element.

2021-01-20  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/rs6000.c (rs6000_emit_le_vsx_store): Change assert.
        Adjust comment.  Simplify code.

2021-01-20  Jakub Jelinek  <jakub@redhat.com>

        PR debug/98765
        * dwarf2out.c (reset_indirect_string): Also reset indirect strings
        with DW_FORM_line_strp form.
        (prune_unused_types_update_strings): Don't add into debug_str_hash
        indirect strings with DW_FORM_line_strp form.
        (adjust_name_comp_dir): New function.
        (dwarf2out_finish): Call it on CU DIEs after resetting
        debug_line_str_hash.

2021-01-20  Vladimir N. Makarov  <vmakarov@redhat.com>

        PR rtl-optimization/98722
        * lra-eliminations.c (eliminate_regs_in_insn): Check that target
        has no 3-op add insn to transform insns containing two pluses.

2021-01-20  Richard Biener  <rguenther@suse.de>

        * hwint.h (add_hwi): New function.
        (mul_hwi): Likewise.
        * tree-data-ref.c (initialize_matrix_A): Properly translate
        tree constants and avoid HOST_WIDE_INT_MIN.
        (lambda_matrix_row_add): Avoid undefined integer overflow
        and return true on such overflow.
        (lambda_matrix_right_hermite): Handle overflow from
        lambda_matrix_row_add gracefully.  Simplify previous fix.
        (analyze_subscript_affine_affine): Likewise.

2021-01-20  Eugene Rozenfeld  <erozen@microsoft.com>

        PR tree-optimization/96674
        * match.pd: New patterns: x < y || y == XXX_MIN --> x <= y - 1
        x >= y && y != XXX_MIN --> x > y - 1

2021-01-20  Richard Sandiford  <richard.sandiford@arm.com>

        PR tree-optimization/98535
        * tree-vect-slp.c (duplicate_and_interleave): Use quick_grow_cleared.
        If the high and low permutes are the same, remove the high permutes
        from the working set and only continue with the low ones.

2021-01-20  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/98721
        * builtins.c (access_ref::inform_access): Don't assume
        SSA_NAME_IDENTIFIER must be non-NULL.  Print messages about
        object whenever allocfn is NULL, rather than only when DECL_P
        is true.  Use %qE instead of %qD for that.  Formatting fixes.

2021-01-20  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98758
        * tree-data-ref.c (int_divides_p): Use lambda_int arguments.
        (lambda_matrix_right_hermite): Avoid undefinedness with
        signed integer abs and multiplication.
        (analyze_subscript_affine_affine): Use lambda_int.

2021-01-20  David Malcolm  <dmalcolm@redhat.com>

        PR debug/98751
        * dwarf2out.c (output_line_info): Rename static variable
        "generation", moving it out of the function to...
        (output_line_info_generation): New.
        (init_sections_and_labels): Likewise, renaming the variable to...
        (init_sections_and_labels_generation): New.
        (dwarf2out_c_finalize): Reset the new variables.

2021-01-19  Martin Sebor  <msebor@redhat.com>

        PR middle-end/98664
        * tree-ssa-live.c (remove_unused_scope_block_p): Keep scopes for
        all functions, even if they're not declared artificial or inline.
        * tree.c (tree_inlined_location): Use macro expansion location
        only if scope traversal fails to expose one.

2021-01-19  Richard Sandiford  <richard.sandiford@arm.com>

        PR rtl-optimization/92294
        * alias.c (compare_base_symbol_refs): Take an extra parameter
        and add the distance between two symbols to it.  Enshrine in
        comments that -1 means "either 0 or 1, but we can't tell
        which at compile time".
        (memrefs_conflict_p): Update call accordingly.
        (rtx_equal_for_memref_p): Likewise.  Take the distance between symbols
        into account.

2021-01-19  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (sqshl, uqshl,
        sqrshl, uqrshl, sqadd, uqadd, sqsub, uqsub, suqadd, usqadd, sqmovn,
        uqmovn, sqxtn2, uqxtn2, sqabs, sqneg, sqdmlal, sqdmlsl, sqdmlal_lane,
        sqdmlsl_lane, sqdmlal_laneq, sqdmlsl_laneq, sqdmlal_n, sqdmlsl_n,
        sqdmlal2, sqdmlsl2, sqdmlal2_lane, sqdmlsl2_lane, sqdmlal2_laneq,
        sqdmlsl2_laneq, sqdmlal2_n, sqdmlsl2_n, sqdmull, sqdmull_lane,
        sqdmull_laneq, sqdmull_n, sqdmull2, sqdmull2_lane, sqdmull2_laneq,
        sqdmull2_n, sqdmulh, sqrdmulh, sqdmulh_lane, sqdmulh_laneq,
        sqrdmulh_lane, sqrdmulh_laneq, sqshrun_n, sqrshrun_n, sqshrn_n,
        uqshrn_n, sqrshrn_n, uqrshrn_n, sqshlu_n, sqshl_n, uqshl_n, sqrdmlah,
        sqrdmlsh, sqrdmlah_lane, sqrdmlsh_lane, sqrdmlah_laneq, sqrdmlsh_laneq,
        sqmovun): Use NONE flags.

2021-01-19  Richard Biener  <rguenther@suse.de>

        PR ipa/98330
        * ipa-modref.c (analyze_stmt): Only record a summary for a
        direct call.

2021-01-19  Richard Biener  <rguenther@suse.de>

        PR middle-end/98638
        * tree-ssanames.c (fini_ssanames): Zero SSA_NAME_DEF_STMT.

2021-01-19  Daniel Hellstrom  <daniel@gaisler.com>

        * config/sparc/rtemself.h (TARGET_OS_CPP_BUILTINS): Add
        built-in define __FIX_LEON3FT_TN0018.

2021-01-19  Richard Biener  <rguenther@suse.de>

        PR ipa/97673
        * tree-inline.c (tree_function_versioning): Set input_location
        to UNKNOWN_LOCATION throughout the function.

2021-01-19  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/98476
        * omp-low.c (lower_omp_target): Handle nonpointer is_device_ptr.

2021-01-19  Martin Jambor  <mjambor@suse.cz>

        PR ipa/98690
        * ipa-sra.c (ssa_name_only_returned_p): New parameter fun.  Check
        whether non-call exceptions allow removal of a statement.
        (isra_analyze_call): Pass the appropriate function to
        ssa_name_only_returned_p.

2021-01-19  Geng Qi  <gengqi@linux.alibaba.com>

        * config/riscv/arch-canonicalize (longext_sort): New function for
         sorting 'multi-letter'.
        * config/riscv/multilib-generator: Adjusting the loop of 'alt' in
        'alts'. The 'arch' may not be the first of 'alts'.
        (_expand_combination): Add underline for the 'ext' without '*'.
        This is because, a single-letter extension can always be treated well
        with a '_' prefix, but it cannot be separated out if it is appended
        to a multi-letter.

2021-01-18  Vladimir N. Makarov  <vmakarov@redhat.com>

        PR target/97847
        * ira.c (ira): Skip abnormal critical edge splitting.

2021-01-18  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/98727
        * tree-ssa-math-opts.c (match_arith_overflow): Fix up computation of
        second .MUL_OVERFLOW operand for signed multiplication with overflow
        checking if the second operand of multiplication is not constant.

2021-01-18  David Edelsohn  <dje.gcc@gmail.com>

        * doc/invoke.texi (-gdwarf): TPF defaults to version 2 and AIX
        defaults to version 4.

2021-01-18  David Malcolm  <dmalcolm@redhat.com>

        * attribs.h (fndecl_dealloc_argno): New decl.
        * builtins.c (call_dealloc_argno): Split out second half of
        function into...
        (fndecl_dealloc_argno): New.
        * doc/extend.texi (Common Function Attributes): Document the
        interaction between the analyzer and the malloc attribute.
        * doc/invoke.texi (Static Analyzer Options): Likewise.

2021-01-17  David Edelsohn  <dje.gcc@gmail.com>

        * config/rs6000/aix71.h (SUBTARGET_OVERRIDE_OPTIONS): Override
        dwarf_version to 4.
        * config/rs6000/aix72.h (SUBTARGET_OVERRIDE_OPTIONS): Same.

2021-01-17  Martin Jambor  <mjambor@suse.cz>

        PR ipa/98222
        * cgraph.c (clone_of_p): Check also former_clone_of as we climb
        the clone tree.

2021-01-17  Mark Wielaard  <mark@klomp.org>

        * common.opt (gdwarf-): Init(5).
        * doc/invoke.texi (-gdwarf): Document default to 5.

2021-01-16  Kwok Cheung Yeung  <kcy@codesourcery.com>

        * builtin-types.def
        (BT_FN_VOID_OMPFN_PTR_OMPCPYFN_LONG_LONG_BOOL_UINT_PTR_INT): Rename
        to...
        (BT_FN_VOID_OMPFN_PTR_OMPCPYFN_LONG_LONG_BOOL_UINT_PTR_INT_PTR):
        ...this.  Add extra argument.
        * gimplify.c (omp_default_clause): Ensure that event handle is
        firstprivate in a task region.
        (gimplify_scan_omp_clauses): Handle OMP_CLAUSE_DETACH.
        (gimplify_adjust_omp_clauses): Likewise.
        * omp-builtins.def (BUILT_IN_GOMP_TASK): Change function type to
        BT_FN_VOID_OMPFN_PTR_OMPCPYFN_LONG_LONG_BOOL_UINT_PTR_INT_PTR.
        * omp-expand.c (expand_task_call): Add GOMP_TASK_FLAG_DETACH to flags
        if detach clause specified.  Add detach argument when generating
        call to GOMP_task.
        * omp-low.c (scan_sharing_clauses): Setup data environment for detach
        clause.
        (finish_taskreg_scan): Move field for variable containing the event
        handle to the front of the struct.
        * tree-core.h (enum omp_clause_code): Add OMP_CLAUSE_DETACH.  Fix
        ordering.
        * tree-nested.c (convert_nonlocal_omp_clauses): Handle
        OMP_CLAUSE_DETACH clause.
        (convert_local_omp_clauses): Handle OMP_CLAUSE_DETACH clause.
        * tree-pretty-print.c (dump_omp_clause): Handle OMP_CLAUSE_DETACH.
        * tree.c (omp_clause_num_ops): Add entry for OMP_CLAUSE_DETACH.
        Fix ordering.
        (omp_clause_code_name): Add entry for OMP_CLAUSE_DETACH.  Fix
        ordering.
        (walk_tree_1): Handle OMP_CLAUSE_DETACH.

2021-01-16  Sebastian Huber  <sebastian.huber@embedded-brains.de>

        * config/nios2/t-rtems: Reset all MULTILIB_* variables.  Shorten
        multilib directory names.  Use MULTILIB_REQUIRED instead of
        MULTILIB_EXCEPTIONS.  Add -mhw-mul -mhw-mulx -mhw-div
        -mcustom-fpu-cfg=fph2 multilib.

2021-01-16  Sebastian Huber  <sebastian.huber@embedded-brains.de>

        * config/nios2/nios2.c (NIOS2_FPU_CONFIG_NUM): Adjust value.
        (nios2_init_fpu_configs): Provide register values for new
        -mcustom-fpu-cfg=fph2 option variant.
        * doc/invoke.texi (-mcustom-fpu-cfg=fph2): Document new option
        variant.

2021-01-16  Sebastian Huber  <sebastian.huber@embedded-brains.de>

        * config/nios2/nios2.c (nios2_custom_check_insns): Remove
        custom instruction warnings.

2021-01-16  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/96669
        * match.pd ((CST << x) & 1 -> x == 0): New simplification.

2021-01-16  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/96271
        * passes.def: Pass false argument to first two pass_cd_dce
        instances and true to last instance.  Add comment that
        last instance rewrites no longer addressed locals.
        * tree-ssa-dce.c (pass_cd_dce): Add update_address_taken_p member and
        initialize it.
        (pass_cd_dce::set_pass_param): New method.
        (pass_cd_dce::execute): Return TODO_update_address_taken from
        last cd_dce instance.

2021-01-15  Carl Love  <cel@us.ibm.com>

        * config/rs6000/altivec.h (vec_mulh, vec_div, vec_dive, vec_mod):
        New defines.
        * config/rs6000/altivec.md (VIlong): Move define to file vsx.md.
        * config/rs6000/rs6000-builtin.def (DIVES_V4SI, DIVES_V2DI,
        DIVEU_V4SI, DIVEU_V2DI, DIVS_V4SI, DIVS_V2DI, DIVU_V4SI,
        DIVU_V2DI, MODS_V2DI, MODS_V4SI, MODU_V2DI, MODU_V4SI,
        MULHS_V2DI, MULHS_V4SI, MULHU_V2DI, MULHU_V4SI, MULLD_V2DI):
        Add builtin define.
        (MULH, DIVE, MOD):  Add new BU_P10_OVERLOAD_2 definitions.
        * config/rs6000/rs6000-call.c (VSX_BUILTIN_VEC_DIV,
        VSX_BUILTIN_VEC_DIVE, P10_BUILTIN_VEC_MOD, P10_BUILTIN_VEC_MULH):
        New overloaded definitions.
        (builtin_function_type) [P10V_BUILTIN_DIVEU_V4SI,
        P10V_BUILTIN_DIVEU_V2DI, P10V_BUILTIN_DIVU_V4SI,
        P10V_BUILTIN_DIVU_V2DI, P10V_BUILTIN_MODU_V2DI,
        P10V_BUILTIN_MODU_V4SI, P10V_BUILTIN_MULHU_V2DI,
        P10V_BUILTIN_MULHU_V4SI]: Add case
        statement for builtins.
        * config/rs6000/rs6000.md (bits): Add new attribute sizes V4SI, V2DI.
        * config/rs6000/vsx.md (VIlong): Moved from config/rs6000/altivec.md.
        (UNSPEC_VDIVES, UNSPEC_VDIVEU): New unspec definitions.
        (vsx_mul_v2di): Add if TARGET_POWER10 statement.
        (vsx_udiv_v2di): Add if TARGET_POWER10 statement.
        (dives_<mode>, diveu_<mode>, div<mode>3, uvdiv<mode>3,
        mods_<mode>, modu_<mode>, mulhs_<mode>, mulhu_<mode>, mulv2di3):
        Add define_insn, mode is VIlong.
        * doc/extend.texi (vec_mulh, vec_mul, vec_div, vec_dive, vec_mod):
        Add builtin descriptions.

2021-01-15  Eric Botcazou  <ebotcazou@adacore.com>

        * final.c (final_start_function_1): Reset force_source_line.

2021-01-15  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/96669
        * match.pd (((1 << A) & 1) != 0 -> A == 0,
        ((1 << A) & 1) == 0 -> A != 0): Generalize for 1s replaced by
        possibly different power of two constants and to right shift too.

2021-01-15  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/96681
        * match.pd ((x < 0) ^ (y < 0) to (x ^ y) < 0): New simplification.
        ((x >= 0) ^ (y >= 0) to (x ^ y) < 0): Likewise.
        ((x < 0) ^ (y >= 0) to (x ^ y) >= 0): Likewise.
        ((x >= 0) ^ (y < 0) to (x ^ y) >= 0): Likewise.

2021-01-15  Alexandre Oliva  <oliva@adacore.com>

        * opts.c (gen_command_line_string): Exclude -dumpbase-ext.

2021-01-15  Tamar Christina  <tamar.christina@arm.com>

        * config/aarch64/aarch64-simd.md (cml<fcmac1><conj_op><mode>4,
        cmul<conj_op><mode>3): New.
        * config/aarch64/iterators.md (UNSPEC_FCMUL,
        UNSPEC_FCMUL180, UNSPEC_FCMLA_CONJ, UNSPEC_FCMLA180_CONJ,
        UNSPEC_CMLA_CONJ, UNSPEC_CMLA180_CONJ, UNSPEC_CMUL, UNSPEC_CMUL180,
        FCMLA_OP, FCMUL_OP, conj_op, rotsplit1, rotsplit2, fcmac1, sve_rot1,
        sve_rot2, SVE2_INT_CMLA_OP, SVE2_INT_CMUL_OP, SVE2_INT_CADD_OP): New.
        (rot): Add UNSPEC_FCMUL, UNSPEC_FCMUL180.
        (rot_op): Renamed to conj_op.
        * config/aarch64/aarch64-sve.md (cml<fcmac1><conj_op><mode>4,
        cmul<conj_op><mode>3): New.
        * config/aarch64/aarch64-sve2.md (cml<fcmac1><conj_op><mode>4,
        cmul<conj_op><mode>3): New.

2021-01-15  David Malcolm  <dmalcolm@redhat.com>

        PR bootstrap/98696
        * diagnostic.c
        (selftest::test_print_parseable_fixits_bytes_vs_display_columns):
        Escape the tempfile name when constructing the expected output.

2021-01-15  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd.md (*aarch64_<su>mlsl_hi<mode>):
        Rename to...
        (aarch64_<su>mlsl_hi<mode>): ... This.
        (aarch64_<su>mlsl_hi<mode>): Define.
        (*aarch64_<su>mlsl<mode): Rename to...
        (aarch64_<su>mlsl<mode): ... This.
        * config/aarch64/aarch64-simd-builtins.def (smlsl, umlsl,
        smlsl_hi, umlsl_hi): Define builtins.
        * config/aarch64/arm_neon.h (vmlsl_high_s8, vmlsl_high_s16,
        vmlsl_high_s32, vmlsl_high_u8, vmlsl_high_u16, vmlsl_high_u32,
        vmlsl_s8, vmlsl_s16, vmlsl_s32, vmlsl_u8,
        vmlsl_u16, vmlsl_u32): Reimplement with builtins.

2021-01-15  Uroš Bizjak  <ubizjak@gmail.com>

        * config/i386/i386-c.c (ix86_target_macros):
        Use cpp_define_formatted for __SIZEOF_FLOAT80__ definition.

2021-01-15  Richard Sandiford  <richard.sandiford@arm.com>

        PR target/88836
        * config.gcc (aarch64*-*-*): Add aarch64-cc-fusion.o to extra_objs.
        * Makefile.in (RTL_SSA_H): New variable.
        * config/aarch64/t-aarch64 (aarch64-cc-fusion.o): New rule.
        * config/aarch64/aarch64-protos.h (make_pass_cc_fusion): Declare.
        * config/aarch64/aarch64-passes.def: Add pass_cc_fusion after
        pass_combine.
        * config/aarch64/aarch64-cc-fusion.cc: New file.

2021-01-15  Richard Sandiford  <richard.sandiford@arm.com>

        * recog.h (insn_change_watermark::~insn_change_watermark): Avoid
        calling cancel_changes for changes that no longer exist.

2021-01-15  Richard Sandiford  <richard.sandiford@arm.com>

        * rtl-ssa/functions.h (function_info::ref_defs): Rename to...
        (function_info::reg_defs): ...this.
        * rtl-ssa/member-fns.inl (function_info::ref_defs): Rename to...
        (function_info::reg_defs): ...this.

2021-01-15  Christophe Lyon  <christophe.lyon@linaro.org>

        PR target/71233
        * config/arm/arm_neon.h (vceqz_p64, vceqq_p64, vceqzq_p64): New.

2021-01-15  Christophe Lyon  <christophe.lyon@linaro.org>

        Revert:
        2021-01-15  Christophe Lyon  <christophe.lyon@linaro.org>

        PR target/71233
        * config/arm/arm_neon.h (vceqz_p64, vceqq_p64, vceqzq_p64): New.

2021-01-15  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/96376
        * tree-vect-stmts.c (get_load_store_type): Disregard alignment
        for VMAT_INVARIANT.

2021-01-15  Martin Liska  <mliska@suse.cz>

        * doc/install.texi: Document that some tests need pytest module.
        * doc/sourcebuild.texi: Likewise.

2021-01-15  Christophe Lyon  <christophe.lyon@linaro.org>

        PR target/71233
        * config/arm/arm_neon.h (vceqz_p64, vceqq_p64, vceqzq_p64): New.

2021-01-15  Christophe Lyon  <christophe.lyon@linaro.org>

        * config/arm/mve.md (mve_vshrq_n_s<mode>_imm): New entry.
        (mve_vshrq_n_u<mode>_imm): Likewise.
        * config/arm/neon.md (vashr<mode>3, vlshr<mode>3): Move to ...
        * config/arm/vec-common.md: ... here.

2021-01-15  Christophe Lyon  <christophe.lyon@linaro.org>

        * config/arm/mve.md (mve_vshlq_<supf><mode>): Move to
        vec-commond.md.
        * config/arm/neon.md (vashl<mode>3): Delete.
        * config/arm/vec-common.md (mve_vshlq_<supf><mode>): New.
        (vasl<mode>3): New expander.

2021-01-15  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98685
        * tree-vect-slp.c (vect_schedule_slp_node): Refactor handling
        of vector extern defs.

2021-01-14  David Malcolm  <dmalcolm@redhat.com>

        PR jit/98586
        * diagnostic.c (diagnostic_kind_text): Break out this array
        from...
        (diagnostic_build_prefix): ...here.
        (fancy_abort): Detect when diagnostic_initialize has not yet been
        called and fall back to a minimal implementation of printing the
        ICE, rather than segfaulting in internal_error.

2021-01-14  David Malcolm  <dmalcolm@redhat.com>

        * diagnostic.c (diagnostic_initialize): Eliminate
        parseable_fixits_p in favor of initializing extra_output_kind from
        GCC_EXTRA_DIAGNOSTIC_OUTPUT.
        (convert_column_unit): New function, split out from...
        (diagnostic_converted_column): ...this.
        (print_parseable_fixits): Add "column_unit" and "tabstop" params.
        Use them to call convert_column_unit on the column values.
        (diagnostic_report_diagnostic): Eliminate conditional on
        parseable_fixits_p in favor of a switch statement on
        extra_output_kind, passing the appropriate values to the new
        params of print_parseable_fixits.
        (selftest::test_print_parseable_fixits_none): Update for new
        params of print_parseable_fixits.
        (selftest::test_print_parseable_fixits_insert): Likewise.
        (selftest::test_print_parseable_fixits_remove): Likewise.
        (selftest::test_print_parseable_fixits_replace): Likewise.
        (selftest::test_print_parseable_fixits_bytes_vs_display_columns):
        New.
        (selftest::diagnostic_c_tests): Call it.
        * diagnostic.h (enum diagnostics_extra_output_kind): New.
        (diagnostic_context::parseable_fixits_p): Delete field in favor
        of...
        (diagnostic_context::extra_output_kind): ...this new field.
        * doc/invoke.texi (Environment Variables): Add
        GCC_EXTRA_DIAGNOSTIC_OUTPUT.
        * opts.c (common_handle_option): Update handling of
        OPT_fdiagnostics_parseable_fixits for change to diagnostic_context
        fields.

2021-01-14  Tamar Christina  <tamar.christina@arm.com>

        * tree-vect-slp-patterns.c (class complex_operations_pattern,
        complex_operations_pattern::matches,
        complex_operations_pattern::recognize,
        complex_operations_pattern::build): New.
        (slp_patterns): Use it.

2021-01-14  Tamar Christina  <tamar.christina@arm.com>

        * internal-fn.def (COMPLEX_FMS, COMPLEX_FMS_CONJ): New.
        * optabs.def (cmls_optab, cmls_conj_optab): New.
        * doc/md.texi: Document them.
        * tree-vect-slp-patterns.c (class complex_fms_pattern,
        complex_fms_pattern::matches, complex_fms_pattern::recognize,
        complex_fms_pattern::build): New.

2021-01-14  Tamar Christina  <tamar.christina@arm.com>

        * internal-fn.def (COMPLEX_FMA, COMPLEX_FMA_CONJ): New.
        * optabs.def (cmla_optab, cmla_conj_optab): New.
        * doc/md.texi: Document them.
        * tree-vect-slp-patterns.c (vect_match_call_p,
        class complex_fma_pattern, vect_slp_reset_pattern,
        complex_fma_pattern::matches, complex_fma_pattern::recognize,
        complex_fma_pattern::build): New.

2021-01-14  Tamar Christina  <tamar.christina@arm.com>

        * internal-fn.def (COMPLEX_MUL, COMPLEX_MUL_CONJ): New.
        * optabs.def (cmul_optab, cmul_conj_optab): New.
        * doc/md.texi: Document them.
        * tree-vect-slp-patterns.c (vect_match_call_complex_mla,
        vect_normalize_conj_loc, is_eq_or_top, vect_validate_multiplication,
        vect_build_combine_node, class complex_mul_pattern,
        complex_mul_pattern::matches, complex_mul_pattern::recognize,
        complex_mul_pattern::build): New.

2021-01-14  Tamar Christina  <tamar.christina@arm.com>

        * tree-vect-slp.c (optimize_load_redistribution_1): New.
        (optimize_load_redistribution, vect_is_slp_load_node): New.
        (vect_match_slp_patterns): Use it.

2021-01-14  Tamar Christina  <tamar.christina@arm.com>

        * tree-vect-slp-patterns.c (complex_add_pattern::build):
        Elide nodes.

2021-01-14  Thomas Schwinge  <thomas@codesourcery.com>

        * config/gcn/mkoffload.c (main): Create an offload image only in
        64-bit configurations.

2021-01-14  H.J. Lu  <hjl.tools@gmail.com>

        PR target/98667
        * config/i386/i386-options.c (ix86_option_override_internal):
        Issue an error for -fcf-protection with CF_BRANCH when compiling
        for 32-bit non-TARGET_CMOV targets.

2021-01-14  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/98671
        * config/i386/i386-options.c (ix86_valid_target_attribute_inner_p):
        Remove declaration and initialization of shadow variable "ret".
        (ix86_option_override_internal): Remove delcaration of
        shadow variable "i".  Redeclare shadowed variable to unsigned.
        * common/config/i386/i386-common.c (pta_size): Redeclare to unsigned.
        * config/i386/i386-builtins.c (get_builtin_code_for_version):
        Update for redeclaration.
        * config/i386/i386.h (pta_size): Ditto.

2021-01-14  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98674
        * tree-data-ref.c (base_supports_access_fn_components_p): New.
        (initialize_data_dependence_relation): For two bases without
        possible access fns resort to type size equality when determining
        shape compatibility.

2021-01-14  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

        PR target/66791
        * config/arm/arm_neon.h: Replace calls to __builtin_vcge* by
        <=, >= operators in vcle and vcge intrinsics respectively.
        * config/arm/arm_neon_builtins.def: Remove entry for
        vcge and vcgeu.

2021-01-14  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/98671
        * config/i386/i386-options.c (ix86_function_specific_save):
        Remove redundant assignment to opts->x_ix86_branch_cost.
        * config/i386/i386.c (ix86_prefetch_sse):
        Rename from x86_prefetch_sse.  Update all uses.
        * config/i386/i386.h: Update for rename.
        * config/i386/i386-options.h: Ditto.

2021-01-14  Jakub Jelinek  <jakub@redhat.com>

        PR target/98670
        * config/i386/sse.md (*sse4_1_zero_extendv8qiv8hi2_3,
        *sse4_1_zero_extendv4hiv4si2_3, *sse4_1_zero_extendv2siv2di2_3):
        Use Bm instead of m for non-avx.  Add isa attribute.

2021-01-14  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/96688
        * match.pd (~(X >> Y) -> ~X >> Y): New simplification if
        ~X can be simplified.

2021-01-14  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-stmts.c (vect_model_load_cost): Account for unused
        IFN_LOAD_LANES results.

2021-01-14  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd.md (aarch64_<su>xtl<mode>):
        Define.
        (aarch64_xtn<mode>): Likewise.
        * config/aarch64/aarch64-simd-builtins.def (sxtl, uxtl, xtn):
        Define
        builtins.
        * config/aarch64/arm_neon.h (vmovl_s8): Reimplement using
        builtin.
        (vmovl_s16): Likewise.
        (vmovl_s32): Likewise.
        (vmovl_u8): Likewise.
        (vmovl_u16): Likewise.
        (vmovl_u32): Likewise.
        (vmovn_s16): Likewise.
        (vmovn_s32): Likewise.
        (vmovn_s64): Likewise.
        (vmovn_u16): Likewise.
        (vmovn_u32): Likewise.
        (vmovn_u64): Likewise.

2021-01-14  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd.md (aarch64_<su>qxtn2<mode>_le):
        Define.
        (aarch64_<su>qxtn2<mode>_be): Likewise.
        (aarch64_<su>qxtn2<mode>): Likewise.
        * config/aarch64/aarch64-simd-builtins.def (sqxtn2, uqxtn2):
        Define builtins.
        * config/aarch64/iterators.md (SAT_TRUNC): Define code_iterator.
        (su): Handle ss_truncate and us_truncate.
        * config/aarch64/arm_neon.h (vqmovn_high_s16): Reimplement using
        builtin.
        (vqmovn_high_s32): Likewise.
        (vqmovn_high_s64): Likewise.
        (vqmovn_high_u16): Likewise.
        (vqmovn_high_u32): Likewise.
        (vqmovn_high_u64): Likewise.

2021-01-14  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd.md (aarch64_xtn2<mode>_le):
        Define.
        (aarch64_xtn2<mode>_be): Likewise.
        (aarch64_xtn2<mode>): Likewise.
        * config/aarch64/aarch64-simd-builtins.def (xtn2): Define
        builtins.
        * config/aarch64/arm_neon.h (vmovn_high_s16): Reimplement using
        builtins.
        (vmovn_high_s32): Likewise.
        (vmovn_high_s64): Likewise.
        (vmovn_high_u16): Likewise.
        (vmovn_high_u32): Likewise.
        (vmovn_high_u64): Likewise.

2021-01-13  Stafford Horne  <shorne@gmail.com>

        * config/or1k/or1k.h (ASM_PREFERRED_EH_DATA_FORMAT): New macro.

2021-01-13  Stafford Horne  <shorne@gmail.com>

        * config/or1k/linux.h (TARGET_ASM_FILE_END): Define macro.

2021-01-13  Stafford Horne  <shorne@gmail.com>

        * config/or1k/or1k.h (TARGET_CPU_CPP_BUILTINS): Add builtin
          define for __or1k_hard_float__.

2021-01-13  Stafford Horne  <shorne@gmail.com>

        * config/or1k/or1k.h (NO_PROFILE_COUNTERS): Define as 1.
        (PROFILE_HOOK): Define to call _mcount.
        (FUNCTION_PROFILER): Change from abort to no-op.

2021-01-13  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/96691
        * match.pd ((~X | C) ^ D -> (X | C) ^ (~D ^ C),
        (~X & C) ^ D -> (X & C) ^ (D ^ C)): New simplifications if
        (~D ^ C) or (D ^ C) can be simplified.

2021-01-13  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/92645
        * match.pd (BIT_FIELD_REF to conversion): Delay canonicalization
        until after vector lowering.

2021-01-13  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64-sve.md (fnma<mode>4): Extend from SVE_FULL_I
        to SVE_I.
        (@aarch64_pred_fnma<mode>, cond_fnma<mode>, *cond_fnma<mode>_2)
        (*cond_fnma<mode>_4, *cond_fnma<mode>_any): Likewise.

2021-01-13  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64-sve.md (fma<mode>4): Extend from SVE_FULL_I
        to SVE_I.
        (@aarch64_pred_fma<mode>, cond_fma<mode>, *cond_fma<mode>_2)
        (*cond_fma<mode>_4, *cond_fma<mode>_any): Likewise.

2021-01-13  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/92645
        * tree-vect-slp.c (vect_build_slp_tree_1): Relax supported
        BIT_FIELD_REF argument.
        (vect_build_slp_tree_2): Record the desired vector type
        on the external vector def.
        (vectorizable_slp_permutation): Handle required punning
        of existing vector defs.

2021-01-13  Richard Sandiford  <richard.sandiford@arm.com>

        * rtl-ssa/accesses.h (def_lookup): Fix order of comparison results.

2021-01-13  Richard Sandiford  <richard.sandiford@arm.com>

        * config/sh/sh.md (movsf_ie): Remove operands[2] test.

2021-01-13  Samuel Thibault  <samuel.thibault@ens-lyon.org>

        * config.gcc [$target == *-*-gnu*]: Enable
        'default_gnu_indirect_function'.

2021-01-13  Jakub Jelinek  <jakub@redhat.com>

        PR target/95905
        * optabs.c (expand_vec_perm_const): Don't force v0 and v1 into
        registers before calling targetm.vectorize.vec_perm_const, only after
        that.
        * config/i386/i386-expand.c (ix86_vectorize_vec_perm_const): Handle
        two argument permutation when one operand is zero vector and only
        after that force operands into registers.
        * config/i386/sse.md (*avx2_zero_extendv16qiv16hi2_1): New
        define_insn_and_split pattern.
        (*avx512bw_zero_extendv32qiv32hi2_1): Likewise.
        (*avx512f_zero_extendv16hiv16si2_1): Likewise.
        (*avx2_zero_extendv8hiv8si2_1): Likewise.
        (*avx512f_zero_extendv8siv8di2_1): Likewise.
        (*avx2_zero_extendv4siv4di2_1): Likewise.
        * config/mips/mips.c (mips_vectorize_vec_perm_const): Force operands
        into registers.
        * config/arm/arm.c (arm_vectorize_vec_perm_const): Likewise.
        * config/sparc/sparc.c (sparc_vectorize_vec_perm_const): Likewise.
        * config/ia64/ia64.c (ia64_vectorize_vec_perm_const): Likewise.
        * config/aarch64/aarch64.c (aarch64_vectorize_vec_perm_const): Likewise.
        * config/rs6000/rs6000.c (rs6000_vectorize_vec_perm_const): Likewise.
        * config/gcn/gcn.c (gcn_vectorize_vec_perm_const): Likewise.  Use std::swap.

2021-01-13  Martin Liska  <mliska@suse.cz>

        PR tree-optimization/98455
        * gimple-if-to-switch.cc (condition_info::record_phi_mapping):
        Record also virtual PHIs.
        (pass_if_to_switch::execute): Return TODO_cleanup_cfg only
        conditionally.

2021-01-13  Jonathan Wakely  <jwakely@redhat.com>

        * doc/invoke.texi (C++ Modules): Fix typos.

2021-01-13  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98640
        * tree-ssa-sccvn.c (visit_nary_op): Do not try to
        handle plus or minus from a truncated operand to be
        sign-extended.

2021-01-13  Jakub Jelinek  <jakub@redhat.com>

        PR target/96938
        * config/i386/i386.md (*btr<mode>_1, *btr<mode>_2): New
        define_insn_and_split patterns.
        (splitter after *btr<mode>_2): New splitter.

2021-01-13  Martin Liska  <mliska@suse.cz>

        PR ipa/98652
        * cgraphunit.c (analyze_functions): Remove dead code.

2021-01-13  Qian Jianhua  <qianjh@cn.fujitsu.com>

        * config/aarch64/aarch64-cost-tables.h (a64fx_extra_costs): New.
        * config/aarch64/aarch64.c (a64fx_addrcost_table): New.
        (a64fx_regmove_cost, a64fx_vector_cost): New.
        (a64fx_tunings): Use the new added cost tables.

2021-01-13  Jakub Jelinek  <jakub@redhat.com>

        PR target/95905
        * config/i386/predicates.md (pmovzx_parallel): New predicate.
        * config/i386/sse.md (*sse4_1_zero_extendv8qiv8hi2_3): New
        define_insn_and_split pattern.
        (*sse4_1_zero_extendv4hiv4si2_3): Likewise.
        (*sse4_1_zero_extendv2siv2di2_3): Likewise.

2021-01-13  Julian Brown  <julian@codesourcery.com>

        * config/gcn/gcn.c (gcn_conditional_register_usage): Remove dead code
        to fix v0 register.

2021-01-13  Julian Brown  <julian@codesourcery.com>

        * config/gcn/gcn.c (gcn_md_reorg): Fix case where EXEC reg is live
        on entry to a BB.

2021-01-13  Julian Brown  <julian@codesourcery.com>

        * config/gcn/gcn-valu.md (recip<mode>2<exec>, recip<mode>2): Use unspec
        for reciprocal-approximation instructions.
        (div<mode>3): Use fused multiply-accumulate operations for reciprocal
        refinement and division result.
        * config/gcn/gcn.md (UNSPEC_RCP): New unspec constant.

2021-01-13  Julian Brown  <julian@codesourcery.com>

        * config/gcn/gcn-valu.md (subdf): Rename to...
        (subdf3): This.

2021-01-12  Martin Liska  <mliska@suse.cz>

        * gcov.c (source_info::debug): Fix printf format for 32-bit hosts.

2021-01-12  Andrea Corallo  <andrea.corallo@arm.com>

        * function-abi.h: Fix typo.

2021-01-12  Christophe Lyon  <christophe.lyon@linaro.org>

        PR target/97875
        PR target/97875
        * config/arm/arm.h (ARM_HAVE_NEON_V8QI_LDST): New macro.
        (ARM_HAVE_NEON_V16QI_LDST, ARM_HAVE_NEON_V4HI_LDST): Likewise.
        (ARM_HAVE_NEON_V8HI_LDST, ARM_HAVE_NEON_V2SI_LDST): Likewise.
        (ARM_HAVE_NEON_V4SI_LDST, ARM_HAVE_NEON_V4HF_LDST): Likewise.
        (ARM_HAVE_NEON_V8HF_LDST, ARM_HAVE_NEON_V4BF_LDST): Likewise.
        (ARM_HAVE_NEON_V8BF_LDST, ARM_HAVE_NEON_V2SF_LDST): Likewise.
        (ARM_HAVE_NEON_V4SF_LDST, ARM_HAVE_NEON_DI_LDST): Likewise.
        (ARM_HAVE_NEON_V2DI_LDST): Likewise.
        (ARM_HAVE_V8QI_LDST, ARM_HAVE_V16QI_LDST): Likewise.
        (ARM_HAVE_V4HI_LDST, ARM_HAVE_V8HI_LDST): Likewise.
        (ARM_HAVE_V2SI_LDST, ARM_HAVE_V4SI_LDST, ARM_HAVE_V4HF_LDST): Likewise.
        (ARM_HAVE_V8HF_LDST, ARM_HAVE_V4BF_LDST, ARM_HAVE_V8BF_LDST): Likewise.
        (ARM_HAVE_V2SF_LDST, ARM_HAVE_V4SF_LDST, ARM_HAVE_DI_LDST): Likewise.
        (ARM_HAVE_V2DI_LDST): Likewise.
        * config/arm/mve.md (*movmisalign<mode>_mve_store): New pattern.
        (*movmisalign<mode>_mve_load): New pattern.
        * config/arm/neon.md (movmisalign<mode>): Move to ...
        * config/arm/vec-common.md: ... here.

2021-01-12  Vladimir N. Makarov  <vmakarov@redhat.com>

        PR target/97969
        * lra-eliminations.c (eliminate_regs_in_insn): Add transformation
        of pattern 'plus (plus (hard reg, const), pseudo)'.

2021-01-12  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98550
        * tree-vect-slp.c (vect_record_max_nunits): Check whether
        the group size is a multiple of the vector element count.
        (vect_build_slp_tree_1): When we need to fail because
        the vector type choosen causes unrolling do so lazily
        without affecting matches only at the end to guide group splitting.

2021-01-12  Martin Liska  <mliska@suse.cz>

        PR c++/97284
        * optc-save-gen.awk: Compare also n_target_save vars with
        strcmp.

2021-01-12  Martin Liska  <mliska@suse.cz>

        * gcov.c (source_info::debug): New.
        (print_usage): Add --debug (-D) option.
        (process_args): Likewise.
        (generate_results): Call src->debug after
        accumulate_line_counts.
        (read_graph_file): Properly assign id for EXIT_BLOCK.
        * profile.c (branch_prob): Dump function body before it is
        instrumented.

2021-01-12  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/98629
        * tree-ssa-math-opts.c (arith_overflow_check_p): Don't update use_stmt
        unless returning non-zero.

2021-01-12  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/95731
        * tree-ssa-reassoc.c (optimize_range_tests_cmp_bitwise): Also optimize
        x < 0 && y < 0 && z < 0 into (x | y | z) < 0 for signed x, y, z.
        (optimize_range_tests): Call optimize_range_tests_cmp_bitwise
        only after optimize_range_tests_var_bound.

2021-01-12  Jakub Jelinek  <jakub@redhat.com>

        * configure.ac: Ensure c/Make-lang.in comes first in @all_lang_makefrags@.
        * configure: Regenerated.

2021-01-12  liuhongt  <hongtao.liu@intel.com>

        PR target/98612
        * config/i386/i386-builtins.h (BUILTIN_DESC_SWAP_OPERANDS):
        Deleted.
        * config/i386/i386-expand.c (ix86_expand_sse_comi): Delete
        dead code.

2021-01-12  Alexandre Oliva  <oliva@adacore.com>

        * ssa-iterators.h (end_imm_use_stmt_traverse): Forward
        declare.
        (auto_end_imm_use_stmt_traverse): New struct.
        (FOR_EACH_IMM_USE_STMT): Use it.
        (BREAK_FROM_IMM_USE_STMT, RETURN_FROM_IMM_USE_STMT): Remove,
        along with uses...
        * gimple-ssa-strength-reduction.c: ... here, ...
        * graphite-scop-detection.c: ... here, ...
        * ipa-modref.c, ipa-pure-const.c, ipa-sra.c: ... here, ...
        * tree-predcom.c, tree-ssa-ccp.c: ... here, ...
        * tree-ssa-dce.c, tree-ssa-dse.c: ... here, ...
        * tree-ssa-loop-ivopts.c, tree-ssa-math-opts.c: ... here, ...
        * tree-ssa-phiprop.c, tree-ssa.c: ... here, ...
        * tree-vect-slp.c: ... and here, ...
        * doc/tree-ssa.texi: ... and the example here.

2021-01-11  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64-sve.md (sdiv_pow2<mode>3): Extend from
        SVE_FULL_I to SVE_I.  Generate an UNSPEC_PRED_X.
        (*sdiv_pow2<mode>3): New pattern.
        (@cond_<sve_int_op><mode>): Extend from SVE_FULL_I to SVE_I.
        Wrap the ASRD in an UNSPEC_PRED_X.
        (*cond_<sve_int_op><mode>_2): Likewise.  Replace the UNSPEC_PRED_X
        predicate with a constant PTRUE, if it isn't already.
        (*cond_<sve_int_op><mode>_z): Replace with...
        (*cond_<sve_int_op><mode>_any): ...this new pattern.

2021-01-11  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64-sve.md (*cond_bic<mode>_2): Extend from
        SVE_FULL_I to SVE_I.
        (*cond_bic<mode>_any): Likewise.

2021-01-11  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64-sve.md (<su>mul<mode>3_highpart)
        (@aarch64_pred_<MUL_HIGHPART:optab><mode>): Extend from SVE_FULL_I
        to SVE_I.

2021-01-11  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64-sve.md (<su>abd<mode>_3): Extend from
        SVE_FULL_I to SVE_I.
        (*aarch64_cond_<su>abd<mode>_2): Likewise.
        (*aarch64_cond_<su>abd<mode>_any): Likewise.
        (@aarch64_pred_<su>abd<mode>): Likewise.  Use UNSPEC_PRED_X
        for the max and min but not for the minus.
        (*aarch64_cond_<su>abd<mode>_3): New pattern.

2021-01-11  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/iterators.md (SVE_24I): New iterator.
        * config/aarch64/aarch64-sve.md (*aarch64_adr<mode>_shift): Extend from
        SVE_FULL_SDI to SVE_24I.  Use containers rather than elements.

2021-01-11  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64-sve.md (@cond_<SVE_INT_BINARY:optab><mode>)
        (*cond_<SVE_INT_BINARY:optab><mode>_2): Extend from SVE_FULL_I
        to SVE_I.
        (*cond_<SVE_INT_BINARY:optab><mode>_3): Likewise.
        (*cond_<SVE_INT_BINARY:optab><mode>_any): Likewise.
        (*cond_<SVE_INT_BINARY:optab><mode>_2_const): Likewise.
        (*cond_<SVE_INT_BINARY:optab><mode>_any_const): Likewise.

2021-01-11  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64-sve.md (<SVE_INT_BINARY_IMM:optab><mode>3)
        (@aarch64_pred_<SVE_INT_BINARY_IMM:optab><mode>)
        (*post_ra_<SVE_INT_BINARY_IMM:optab><mode>3): Extend from SVE_FULL_I
        to SVE_I.

2021-01-11  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64-sve.md (<ASHIFT:optab><mode>3)
        (v<ASHIFT:optab><mode>3, @aarch64_pred_<optab><mode>)
        (*post_ra_v<ASHIFT:optab><mode>3): Extend from SVE_FULL_I to SVE_I.

2021-01-11  Martin Liska  <mliska@suse.cz>

        PR jit/98615
        * symtab-clones.h (clone_info::release): Release
        symtab::m_clones with ggc_delete as it's a GGC memory.

2021-01-11  Matthias Klose  <doko@ubuntu.com>

        * Makefile.in (LINK_PROGRESS): Show the link target.

2021-01-11  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/91403
        * tree-vect-data-refs.c (vect_analyze_group_access_1): Cap
        single-element interleaving group size at 4096 elements.

2021-01-11  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98526
        * tree-vect-loop.c (vect_model_reduction_cost): Remove costing
        of the actual reduction op for the regular case.
        (vectorizable_reduction): Cost the stmts
        vect_transform_reduction produces here.

2021-01-11  Andreas Krebbel  <krebbel@linux.ibm.com>

        * tree-ssa-forwprop.c (simplify_vector_constructor): For
        big-endian, use UNPACK[_FLOAT]_HI.

2021-01-11  Tamar Christina  <tamar.christina@arm.com>

        * tree-vect-slp-patterns.c (class complex_pattern,
        class complex_add_pattern): Add parameters to matches.
        (complex_add_pattern::build): Free memory.
        (complex_add_pattern::matches): Move validation end of match.
        (complex_add_pattern::recognize): Likewise.

2021-01-11  Tamar Christina  <tamar.christina@arm.com>

        * tree-vect-slp-patterns.c (linear_loads_p): Fix externals.

2021-01-11  Tamar Christina  <tamar.christina@arm.com>

        * tree-vect-slp-patterns.c (is_linear_load_p): Fix ambiguity.

2021-01-11  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/95867
        * tree-ssa-math-opts.h: New header.
        * tree-ssa-math-opts.c: Include tree-ssa-math-opts.h.
        (powi_as_mults): No longer static.  Use build_one_cst instead of
        build_real.  Formatting fix.
        * tree-ssa-reassoc.c: Include tree-ssa-math-opts.h.
        (attempt_builtin_powi): Handle multiplication reassociation without
        powi_fndecl using powi_as_mults.
        (reassociate_bb): For integral types don't require
        -funsafe-math-optimizations to call attempt_builtin_powi.

2021-01-11  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/95852
        * tree-ssa-math-opts.c (maybe_optimize_guarding_check): Change
        mul_stmts parameter type to vec<gimple *> &.  Before cond_stmt
        allow in the bb any of the stmts in that vector, div_stmt and
        up to 3 cast stmts.
        (arith_cast_equal_p): New function.
        (arith_overflow_check_p): Add cast_stmt argument, handle signed
        multiply overflow checks.
        (match_arith_overflow): Adjust caller.  Handle signed multiply
        overflow checks.

2021-01-11  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/95852
        * tree-ssa-math-opts.c (maybe_optimize_guarding_check): New function.
        (uaddsub_overflow_check_p): Renamed to ...
        (arith_overflow_check_p): ... this.  Handle also multiplication
        with overflow check.
        (match_uaddsub_overflow): Renamed to ...
        (match_arith_overflow): ... this.  Add cfg_changed argument.  Handle
        also multiplication with overflow check.  Adjust function comment.
        (math_opts_dom_walker::after_dom_children): Adjust callers.  Call
        match_arith_overflow also for MULT_EXPR.

2021-01-11  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/arm_neon.h (vmovl_s8): Reimplement using
        __builtin_convertvector.
        (vmovl_s16): Likewise.
        (vmovl_s32): Likewise.
        (vmovl_u8): Likewise.
        (vmovl_u16): Likewise.
        (vmovl_u32): Likewise.
        (vmovn_s16): Likewise.
        (vmovn_s32): Likewise.
        (vmovn_s64): Likewise.
        (vmovn_u16): Likewise.
        (vmovn_u32): Likewise.
        (vmovn_u64): Likewise.

2021-01-11  Martin Liska  <mliska@suse.cz>

        * gimple-if-to-switch.cc (struct condition_info): Use auto_var.
        (if_chain::is_beneficial): Delete clusters
        (find_conditions): Make second argument of conditions_in_bbs a
        pointer so that we control over it's lifetime.
        (pass_if_to_switch::execute): Delete them.

2021-01-11  Kewen Lin  <linkw@linux.ibm.com>

        * ira.c (move_unallocated_pseudos): Check other_reg and skip if
        it isn't set.

2021-01-09  Maciej W. Rozycki  <macro@linux-mips.org>

        * config/vax/vax.md (cc): Remove mode attribute.
        (subst_<cc>, subst_f<cc>): Rename to...
        (subst_<mode>, subst_f<VAXccnz:mode>): ... these respectively.
        (*cbranch<VAXint:mode>4_<VAXcc:mode>): Update for `cc' removal.
        (*cbranch<VAXfp:mode>4_<VAXccnz:mode>): Likewise.
        (*branch_<mode>, *branch_<mode>_reversed): Likewise.

2021-01-09  Maciej W. Rozycki  <macro@linux-mips.org>

        * config/vax/vax.md (subst_f<cc>): Add mode to operands and
        `const_double_zero'.

2021-01-09  Maciej W. Rozycki  <macro@linux-mips.org>

        * config/pdp11/pdp11.md (PDPfp): New mode iterator.
        (fcc_cc, fcc_ccnz): Use it.  Add mode to `const_double_zero' and
        operands.

2021-01-09  Maciej W. Rozycki  <macro@linux-mips.org>

        * genemit.c (gen_exp) <CONST_DOUBLE>: Handle `const_double_zero'
        rtx.
        * read-rtl.c (rtx_reader::read_rtx_code): Handle machine mode
        with `const_double_zero'.
        * doc/rtl.texi (Constant Expression Types): Document it.

2021-01-09  Jakub Jelinek  <jakub@redhat.com>

        PR c++/98556
        * tree-cfg.c (verify_gimple_assign_binary): Allow lhs of
        POINTER_DIFF_EXPR to be any integral type.

2021-01-09  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/98603
        * function.c (instantiate_virtual_regs_in_insn): For asm goto
        with impossible constraints, drop all SETs, CLOBBERs, drop PARALLEL
        if any, set ASM_OPERANDS mode to VOIDmode and change
        ASM_OPERANDS_OUTPUT_CONSTRAINT and ASM_OPERANDS_OUTPUT_IDX.

2021-01-09  Alexandre Oliva  <oliva@gnu.org>

        PR debug/97714
        * final.c (notice_source_line): Narrow down the condition to
        skip a line-0 marker.

2021-01-08  Sergei Trofimovich  <siarheit@google.com>

        * ipa-modref.c (merge_call_side_effects): Fix
        linebreak split by reordering two print calls.

2021-01-08  Ilya Leoshkevich  <iii@linux.ibm.com>

        * config/s390/vector.md (*tf_to_fprx2_0): Rename from
        "*mov_tf_to_fprx2_0" for consistency, fix constraint.
        (*tf_to_fprx2_1): Rename from "*mov_tf_to_fprx2_1" for
        consistency, fix constraint.

2021-01-08  Ilya Leoshkevich  <iii@linux.ibm.com>

        * config/s390/s390-c.c (s390_def_or_undef_macro): Accept
        callables instead of mask values.
        (struct target_flag_set_p): New predicate.
        (s390_cpu_cpp_builtins_internal): Define or undefine
        __LONG_DOUBLE_VX__ macro.

2021-01-08  H.J. Lu  <hjl.tools@gmail.com>

        PR target/98482
        * config/i386/i386.c (x86_function_profiler): Use R10 and R11
        to call mcount in large model with PIC for NO_PROFILE_COUNTERS
        targets.

2021-01-08  Richard Biener  <rguenther@suse.de>

        * tree-ssa-sccvn.c (pass_fre::execute): Reset the SCEV hash table.

2021-01-08  Richard Biener  <rguenther@suse.de>

        * tree-vect-slp.c (scalar_stmts_to_slp_tree_map_t): Fix.
        (vect_build_slp_tree): On cache hit release the matched
        scalar stmts vector.
        * tree-vect-stmts.c (vectorizable_store): Properly free
        vec_oprnds before possibly gathering them again.

2021-01-08  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98544
        * tree-vect-slp.c (vect_optimize_slp): Always materialize
        permutes at a permute node.

2021-01-08  H.J. Lu  <hjl.tools@gmail.com>

        PR target/98482
        * config/i386/i386.c (x86_function_profiler): Use R10 to call
        mcount in large model.  Sorry for large model with PIC.

2021-01-08  Jakub Jelinek  <jakub@redhat.com>

        PR target/98585
        * config/i386/i386.opt (ix86_cmodel, ix86_incoming_stack_boundary_arg,
        ix86_pmode, ix86_preferred_stack_boundary_arg, ix86_regparm,
        ix86_veclibabi_type): Remove x_ prefix, use TargetVariable instead of
        TargetSave and initialize for variables with enum types.
        (mfentry, mstack-protector-guard-reg=, mstack-protector-guard-offset=,
        mstack-protector-guard-symbol=): Add Save.
        * config/i386/i386-options.c (ix86_function_specific_save,
        ix86_function_specific_restore): Don't save or restore x_ix86_cmodel,
        x_ix86_incoming_stack_boundary_arg, x_ix86_pmode,
        x_ix86_preferred_stack_boundary_arg, x_ix86_regparm,
        x_ix86_veclibabi_type.

2021-01-08  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64-sve.md (*cnot<mode>): Extend from
        SVE_FULL_I to SVE_I.
        (*cond_cnot<mode>_2, *cond_cnot<mode>_any): Likewise.

2021-01-08  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64-sve.md (*cond_uxt<mode>_2): Extend from
        SVE_FULL_I to SVE_I.
        (*cond_uxt<mode>_any): Likewise.

2021-01-08  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/iterators.md (Vwhalf): New iterator.
        * config/aarch64/aarch64-simd.md (aarch64_<sur>adalp<mode>_3):
        Rename to...
        (aarch64_<sur>adalp<mode>): ... This.  Make more
        builtin-friendly.
        (<sur>sadv16qi): Adjust callsite of the above.
        * config/aarch64/aarch64-simd-builtins.def (sadalp, uadalp): New
        builtins.
        * config/aarch64/arm_neon.h (vpadal_s8): Reimplement using
        builtins.
        (vpadal_s16): Likewise.
        (vpadal_u8): Likewise.
        (vpadal_u16): Likewise.
        (vpadalq_s8): Likewise.
        (vpadalq_s16): Likewise.
        (vpadalq_s32): Likewise.
        (vpadalq_u8): Likewise.
        (vpadalq_u16): Likewise.
        (vpadalq_u32): Likewise.

2021-01-08  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd.md (aarch64_<su>abd<mode>_3):
        Rename to...
        (aarch64_<su>abd<mode>): ... This.
        (<sur>sadv16qi): Adjust callsite of the above.
        * config/aarch64/aarch64-simd-builtins.def (sabd, uabd): Define
        builtins.
        * config/aarch64/arm_neon.h (vabd_s8): Reimplement using
        builtin.
        (vabd_s16): Likewise.
        (vabd_s32): Likewise.
        (vabd_u8): Likewise.
        (vabd_u16): Likewise.
        (vabd_u32): Likewise.
        (vabdq_s8): Likewise.
        (vabdq_s16): Likewise.
        (vabdq_s32): Likewise.
        (vabdq_u8): Likewise.
        (vabdq_u16): Likewise.
        (vabdq_u32): Likewise.

2021-01-08  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (saba, uaba): Define
        builtins.
        * config/aarch64/arm_neon.h (vaba_s8): Implement using builtin.
        (vaba_s16): Likewise.
        (vaba_s32): Likewise.
        (vaba_u8): Likewise.
        (vaba_u16): Likewise.
        (vaba_u32): Likewise.
        (vabaq_s8): Likewise.
        (vabaq_s16): Likewise.
        (vabaq_s32): Likewise.
        (vabaq_u8): Likewise.
        (vabaq_u16): Likewise.
        (vabaq_u32): Likewise.

2021-01-08  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd.md (aba<mode>_3): Rename to...
        (aarch64_<su>aba<mode>): ... This.  Handle uaba as well.
        Change RTL pattern to match.

2021-01-08  Kito Cheng  <kito.cheng@sifive.com>

        * common/config/riscv/riscv-common.c (riscv_current_subset_list): New.
        * config/riscv/riscv-c.c (riscv-subset.h): New.
        (INCLUDE_STRING): Define.
        (riscv_cpu_cpp_builtins): Add new style architecture extension
        test macros.
        * config/riscv/riscv-subset.h (riscv_subset_list::begin): New.
        (riscv_subset_list::end): New.
        (riscv_current_subset_list): New.

2021-01-08  Kito Cheng  <kito.cheng@sifive.com>

        * common/config/riscv/riscv-common.c (RISCV_DONT_CARE_VERSION):
        Move to riscv-subset.h.
        (struct riscv_subset_t): Ditto.
        (class riscv_subset_list): Ditto.
        * config/riscv/riscv-subset.h (RISCV_DONT_CARE_VERSION): Move
        from riscv-common.c.
        (struct riscv_subset_t): Ditto.
        (class riscv_subset_list): Ditto.
        * config/riscv/t-riscv ($(common_out_file)): Add file
        dependency.

2021-01-07  Jakub Jelinek  <jakub@redhat.com>

        PR target/98567
        * config/i386/i386.md (*bmi_blsi_<mode>_cmp, *bmi_blsi_<mode>_ccno):
        New define_insn patterns.

2021-01-07  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64-sve.md (@cond_<SVE_INT_UNARY:optab><mode>)
        (*cond_<SVE_INT_UNARY:optab><mode>_2): Extend from SVE_FULL_I to SVE_I.
        (*cond_<SVE_INT_UNARY:optab><mode>_any): Likewise.

2021-01-07  Richard Sandiford  <richard.sandiford@arm.com>

        PR tree-optimization/98560
        * internal-fn.def (IFN_VCONDU, IFN_VCONDEQ): Use type vec_cond.
        * internal-fn.c (vec_cond_mask_direct): Get the data mode from
        argument 1.
        (vec_cond_direct): Likewise argument 2.
        (vec_condu_direct, vec_condeq_direct): Delete.
        (expand_vect_cond_optab_fn): Rename to...
        (expand_vec_cond_optab_fn): ...this, replacing old macro.
        (expand_vec_condu_optab_fn, expand_vec_condeq_optab_fn): Delete.
        (expand_vect_cond_mask_optab_fn): Rename to...
        (expand_vec_cond_mask_optab_fn): ...this, replacing old macro.
        (direct_vec_cond_mask_optab_supported_p): Treat the optab as a
        convert optab.
        (direct_vec_cond_optab_supported_p): Likewise.
        (direct_vec_condu_optab_supported_p): Delete.
        (direct_vec_condeq_optab_supported_p): Delete.
        * gimple-isel.cc: Include internal-fn.h.
        (gimple_expand_vec_cond_expr): Check that IFN_VCONDEQ is supported
        before using it.

2021-01-07  Richard Sandiford  <richard.sandiford@arm.com>

        PR tree-optimization/98560
        * gimple-isel.cc (gimple_expand_vec_cond_expr): If we fail to use
        IFN_VCOND{,U,EQ}, fall back on IFN_VCOND_MASK.

2021-01-07  Uroš Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.md (insn): Merge from plusminus_insn, shift_insn,
        rotate_insn and optab code attributes.
        Update all uses to merged code attribute.
        * config/i386/sse.md: Update all uses to merged code attribute.
        * config/i386/mmx.md: Update all uses to merged code attribute.

2021-01-07  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/98568
        * gimple-ssa-store-merging.c (bswap_view_convert): New function.
        (bswap_replace): Use it.

2021-01-06  Vladimir N. Makarov  <vmakarov@redhat.com>

        PR rtl-optimization/97978
        * lra-int.h (lra_hard_reg_split_p): New external.
        * lra.c (lra_hard_reg_split_p): New global.
        (lra): Set up lra_hard_reg_split_p after splitting a hard reg.
        * lra-assigns.c (lra_assign): Don't check allocation correctness
        after hard reg splitting.

2021-01-06  Martin Sebor  <msebor@redhat.com>

        PR c++/98305
        * builtins.c (new_delete_mismatch_p): New overload.
        (new_delete_mismatch_p (tree, tree)): Call it.

2021-01-06  Alexandre Oliva  <oliva@adacore.com>

        * Makefile.in (T_GLIMITS_H): New.
        (stmp-int-hdrs): Depend on it, use it.
        * config/t-vxworks (T_GLIMITS_H): Override it.
        (vxw-glimits.h): New.

2021-01-06  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98513
        * value-range.cc (intersect_ranges): Compare the upper bounds
        for the expected relation.

2021-01-06  Gerald Pfeifer  <gerald@pfeifer.com>

        Revert:
        2020-12-28  Gerald Pfeifer  <gerald@pfeifer.com>

        * doc/standards.texi (HSAIL): Remove section.

2021-01-05  Samuel Thibault  <samuel.thibault@ens-lyon.org>

        * configure: Re-generate.

2021-01-05  Jakub Jelinek  <jakub@redhat.com>

        * doc/invoke.texi (-std=c++20): Adjust for the publication of
        ISO 14882:2020 standard.
        * doc/standards.texi: Likewise.

2021-01-05  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/94802
        * expr.h (maybe_optimize_sub_cmp_0): Declare.
        * expr.c: Include tree-pretty-print.h and flags.h.
        (maybe_optimize_sub_cmp_0): New function.
        (do_store_flag): Use it.
        * cfgexpand.c (expand_gimple_cond): Likewise.

2021-01-05  Richard Sandiford  <richard.sandiford@arm.com>

        * mux-utils.h (pointer_mux::m_ptr): Tweak description of contents.
        * rtlanal.c (simple_regno_set): Tweak description to clarify the
        RMW condition.

2021-01-05  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98516
        * tree-vect-slp.c (vect_optimize_slp): Permute the incoming
        lanes when materializing on a VEC_PERM node.
        (vectorizable_slp_permutation): Dump the permute properly.

2021-01-05  Richard Biener  <rguenther@suse.de>

        * tree-vect-slp.c (vect_slp_region): Move debug counter
        to cover individual subgraphs.

2021-01-05  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98428
        * tree-vect-slp.c (vect_build_slp_tree_1): Properly reject
        vector lane extracts for loop vectorization.

2021-01-05  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/98514
        * tree-ssa-reassoc.c (bb_rank): Change type from long * to
        int64_t *.
        (operand_rank): Change type from hash_map<tree, long> to
        hash_map<tree, int64_t>.
        (phi_rank): Change return type from long to int64_t.
        (loop_carried_phi): Change block_rank variable type from long to
        int64_t.
        (propagate_rank): Change return type, rank parameter type and
        op_rank variable type from long to int64_t.
        (find_operand_rank): Change return type from long to int64_t
        and change slot variable type from long * to int64_t *.
        (insert_operand_rank): Change rank parameter type from long to
        int64_t.
        (get_rank): Change return type and rank variable type from long to
        int64_t.  Use PRId64 instead of ld to print the rank.
        (init_reassoc): Change rank variable type from long to int64_t
        and adjust correspondingly bb_rank and operand_rank initialization.

2021-01-05  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/96928
        * tree-ssa-phiopt.c (xor_replacement): New function.
        (tree_ssa_phiopt_worker): Call it.

2021-01-05  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/96930
        * match.pd ((A / (1 << B)) -> (A >> B)): If A is extended
        from narrower value which has the same type as 1 << B, perform
        the right shift on the narrower value followed by extension.

2021-01-05  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/96239
        * gimple-ssa-store-merging.c (maybe_optimize_vector_constructor): New
        function.
        (get_status_for_store_merging): Don't return BB_INVALID for blocks
        with potential bswap optimizable CONSTRUCTORs.
        (pass_store_merging::execute): Optimize vector CONSTRUCTORs with bswap
        if possible.

2021-01-05  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98381
        * tree.c (vector_element_bits): Properly compute bool vector
        element size.
        * tree-vect-loop.c (vectorizable_live_operation): Properly
        compute the last lane bit offset.

2021-01-05  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/98522
        * config/i386/sse.md (sse_cvtps2pi): Redefine as define_insn_and_split.
        Clear the top 64 bytes of the input XMM register.
        (sse_cvttps2pi): Ditto.

2021-01-05  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/98521
        * config/i386/xopintrin.h (_mm256_cmov_si256): New.

2021-01-05  H.J. Lu  <hjl.tools@gmail.com>

        PR target/98495
        * config/i386/xmmintrin.h (_mm_extract_pi16): Cast to unsigned
        short first.

2021-01-05  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc.md (maddsidi4_split): Use ACC_REG_FIRST.
        (umaddsidi4_split): Likewise.

2021-01-05  liuhongt  <hongtao.liu@intel.com>

        PR target/98461
        * config/i386/sse.md (*sse2_pmovskb_zexthisi): New
        define_insn_and_split for zero_extend of subreg HI of pmovskb
        result.
        (*sse2_pmovskb_zexthisi): Add new combine splitters for
        zero_extend of not of subreg HI of pmovskb result.

2021-01-05  Richard Sandiford  <richard.sandiford@arm.com>

        PR target/97269
        * explow.c (convert_memory_address_addr_space_1): Handle UNSPECs
        nested in CONSTs.
        * config/aarch64/aarch64.c (aarch64_expand_mov_immediate): Use
        convert_memory_address to convert symbolic immediates to ptr_mode
        before forcing them to memory.

2021-01-05  Richard Sandiford  <richard.sandiford@arm.com>

        PR rtl-optimization/97144
        * recog.c (constrain_operands): Initialize matching_operand
        for each alternative, rather than only doing it once.

2021-01-05  Richard Sandiford  <richard.sandiford@arm.com>

        PR rtl-optimization/98403
        * rtl-ssa/changes.cc (function_info::finalize_new_accesses): Explain
        why we don't remove call clobbers.
        (function_info::apply_changes_to_insn): Don't attempt to add
        call clobbers here.

2021-01-05  Richard Sandiford  <richard.sandiford@arm.com>

        PR tree-optimization/98371
        * tree-vect-loop.c (vect_reanalyze_as_main_loop): New function.
        (vect_analyze_loop): If an epilogue loop appears to be cheaper
        than the main loop, re-analyze it as a main loop before adopting
        it as a main loop.

2021-01-05  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

        PR c++/98316
        * configure.ac (NETLIBS): Determine using AX_LIB_SOCKET_NSL.
        * aclocal.m4, configure: Regenerate.
        * Makefile.in (NETLIBS): Define.
        (BACKEND): Remove $(CODYLIB).

2021-01-05  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/98334
        * simplify-rtx.c (simplify_context::simplify_binary_operation_1):
        Optimize (X - 1) * Y + Y to X * Y or (X + 1) * Y - Y to X * Y.

2021-01-05  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * tree-inline.c (expand_call_inline): Restore input_location.
        Return result from recursive call.

2021-01-04  Richard Sandiford  <richard.sandiford@arm.com>

        PR tree-optimization/95401
        * config/aarch64/aarch64-sve-builtins.cc
        (gimple_folder::load_store_cookie): Use bits rather than bytes
        for the alignment argument to IFN_MASK_LOAD and IFN_MASK_STORE.
        * gimple-fold.c (gimple_fold_mask_load_store_mem_ref): Likewise.
        * tree-vect-stmts.c (vectorizable_store): Likewise.
        (vectorizable_load): Likewise.

2021-01-04  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98308
        * tree-vect-stmts.c (vectorizable_load): Set invariant mask
        SLP vectype.

2021-01-04  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/95771
        * tree-ssa-loop-niter.c (number_of_iterations_popcount): Handle types
        with precision smaller than int's precision and types with precision
        twice as large as long long.  Formatting fixes.

2021-01-04  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98464
        * tree-ssa-sccvn.c (vn_valueize_for_srt): Rename from ...
        (vn_valueize_wrapper): ... this.  Temporarily adjust vn_context_bb.
        (process_bb): Adjust.

2021-01-04  Matthew Malcomson  <matthew.malcomson@arm.com>

        PR other/98437
        * doc/invoke.texi (-fsanitize=address): Fix wording describing
        clash with -fsanitize=hwaddress.

2021-01-04  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98282
        * tree-ssa-sccvn.c (vn_get_stmt_kind): Classify tcc_reference on
        invariants as VN_NARY.

2021-01-04  Richard Sandiford  <richard.sandiford@arm.com>

        PR target/89057
        * config/aarch64/aarch64-simd.md (aarch64_combine<mode>): Accept
        aarch64_simd_reg_or_zero for operand 2.  Use the combinez patterns
        to handle zero operands.

2021-01-04  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64.c (offset_6bit_signed_scaled_p): New function.
        (offset_6bit_unsigned_scaled_p): Fix typo in comment.
        (aarch64_sve_prefetch_operand_p): Accept MUL VLs in the range
        [-32, 31].

2021-01-04  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98393
        * tree-vect-slp.c (vect_build_slp_tree): Properly zero matches
        when hitting the limit.

2021-01-04  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98291
        * tree-vect-loop.c (vectorizable_reduction): Bypass
        associativity check for SLP reductions with VF 1.

2021-01-04  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/96782
        * match.pd (x == ~x -> false, x != ~x -> true): New simplifications.

2021-01-04  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * collect-utils.c (collect_execute): Check dumppfx.
        * collect2.c (maybe_run_lto_and_relink, do_link): Pass atsuffix
        to collect_execute.
        (do_link): Add new parameter atsuffix.
        (main): Handle -dumpdir option.  Skip one argument for
        -o, -isystem and -B options.
        * gcc.c (make_at_file): New helper function.
        (close_at_file): Use it.

2021-01-02  Iain Sandoe  <iain@sandoe.co.uk>

        * config/darwin.h (MIN_LD64_NO_COAL_SECTS): Adjust.
        Amend handling for LD64_VERSION fallback defaults.

2021-01-02  Iain Sandoe  <iain@sandoe.co.uk>

        * config.gcc: Compute default version information
        from the configured target.  Likewise defaults for
        ld64.
        * config/darwin10.h: Removed.
        * config/darwin12.h: Removed.
        * config/darwin9.h: Removed.
        * config/rs6000/darwin8.h: Removed.

2021-01-02  Iain Sandoe  <iain@sandoe.co.uk>

        * config/darwin9.h (ASM_OUTPUT_ALIGNED_COMMON): Delete.

2021-01-02  Iain Sandoe  <iain@sandoe.co.uk>

        * config/darwin9.h (STACK_CHECK_STATIC_BUILTIN): Move from here..
        * config/darwin.h (STACK_CHECK_STATIC_BUILTIN): .. to here.

2021-01-02  Iain Sandoe  <iain@sandoe.co.uk>

        * config/darwin10.h (LINK_GCC_C_SEQUENCE_SPEC): Move from
        here...
        * config/darwin.h (LINK_GCC_C_SEQUENCE_SPEC): ... to here.

2021-01-02  Iain Sandoe  <iain@sandoe.co.uk>

        * config/darwin10.h (LINK_GCC_C_SEQUENCE_SPEC): Move the spec
        for the Darwin10 unwinder stub from here ...
        * config/darwin.h (LINK_COMMAND_SPEC_A): ... to here.

2021-01-02  Iain Sandoe  <iain@sandoe.co.uk>

        * config/darwin.h (DSYMUTIL_SPEC): Default to DWARF
        (ASM_DEBUG_SPEC):Only define if the assembler supports
        stabs.
        (PREFERRED_DEBUGGING_TYPE): Default to DWARF.
        (DARWIN_PREFER_DWARF): Define.
        * config/darwin9.h (PREFERRED_DEBUGGING_TYPE): Remove.
        (DARWIN_PREFER_DWARF): Likewise
        (DSYMUTIL_SPEC): Likewise.
        (COLLECT_RUN_DSYMUTIL): Likewise.
        (ASM_DEBUG_SPEC): Likewise.
        (ASM_DEBUG_OPTION_SPEC): Likewise.

2021-01-02  Jan Hubicka  <jh@suse.cz>

        * cfg.c (free_block): ggc_free bb.

2021-01-01  Jakub Jelinek  <jakub@redhat.com>

        * gcc.c (process_command): Update copyright notice dates.
        * gcov-dump.c (print_version): Ditto.
        * gcov.c (print_version): Ditto.
        * gcov-tool.c (print_version): Ditto.
        * gengtype.c (create_file): Ditto.
        * doc/cpp.texi: Bump @copying's copyright year.
        * doc/cppinternals.texi: Ditto.
        * doc/gcc.texi: Ditto.
        * doc/gccint.texi: Ditto.
        * doc/gcov.texi: Ditto.
        * doc/install.texi: Ditto.
        * doc/invoke.texi: Ditto.

2021-01-01  Jakub Jelinek  <jakub@redhat.com>

        * ChangeLog-2020: Rotate ChangeLog.  New file.

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