compiler: avoid negative zero in float constants

    Check for negative numbers with very small magnitudes that will round
    to negative zero, and force them to positive zero instead.

    This implements the spec clarification in https://golang.org/cl/14727.
    The test is in https://golang.org/cl/91895.

    Fixes golang/go#12621

    Reviewed-on: https://go-review.googlesource.com/92175

From-SVN: r257415

Fix checking -mibt and -mshstk options for control flow protection

PR target/84145
* config/i386/i386.c: Reimplement the check of possible options
-mibt/-mshstk conbination. Change error messages.
* doc/invoke.texi: Fix a typo: remove extra '='.
* c-c++-common/fcf-protection-1.c: Change a compared message.
* c-c++-common/fcf-protection-2.c: Likewise.
* c-c++-common/fcf-protection-3.c: Likewise.
* c-c++-common/fcf-protection-5.c: Likewise.
* c-c++-common/fcf-protection-6.c: New test.
* c-c++-common/fcf-protection-7.c: Likewise.

From-SVN: r257414

runtime: correct runtime structfield type to match reflect

    The offset field in structfield has changed to offsetAnon, and now
    requires a shift to get the actual offset value.

    Fixes golang/go#23391

    Reviewed-on: https://go-review.googlesource.com/92275

From-SVN: r257413

re PR lto/81004 (linking failed with -flto and static libboost_program_options)

PR lto/81004
* lto.c: Include builtins.h
(register_resolution): Merge resolutions in case trees was
merged across units.
(lto_maybe_register_decl): Break out from ...
(lto_read_decls): ... here.
(unify_scc): Also register decls here.
(read_cgraph_and_symbols): Sanity check that all resolutions was
read.

From-SVN: r257412

re PR tree-optimization/84228 (Bogus -Wstringop-truncation warning with -g)

PR tree-optimization/84228
* tree-ssa-strlen.c (maybe_diag_stxncpy_trunc): Skip debug statements.

* c-c++-common/Wstringop-truncation-3.c: New test.

From-SVN: r257411

re PR target/82641 (Unable to enable crc32 for a certain function with target attribute on ARM (aarch32))

2018-02-06  Tamar Christina  <tamar.christina@arm.com>

PR target/82641
* config/arm/arm.c (arm_print_asm_arch_directives): Record already
emitted arch directives.
* config/arm/arm-c.c (arm_cpu_builtins): Undefine __ARM_ARCH and
__ARM_FEATURE_COPROC before changing architectures.

gcc/testsuite
2018-02-06  Tamar Christina  <tamar.christina@arm.com>

PR target/82641
* gcc.target/arm/pragma_arch_switch_2.c: New.

From-SVN: r257410

Avoid cc1 SEGV in gcc.dg/rtl/x86_64/final.c (PR target/79975)

PR target/79975
* gcc.dg/rtl/x86_64/final.c: Add -fdwarf2-cfi-asm to dg-options.

From-SVN: r257408

i386.c (print_reg): Fix typo.

2018-02-06  Richard Biener  <rguenther@suse.de>

* config/i386/i386.c (print_reg): Fix typo.
(ix86_loop_unroll_adjust): Do not unroll beyond the original nunroll.

From-SVN: r257407

gcc-plugin.m4 (GCC_ENABLE_PLUGINS): Remove -q option passed to grep.

config/
* gcc-plugin.m4 (GCC_ENABLE_PLUGINS): Remove -q option passed to grep.
gcc/
* configure: Regenerate.

From-SVN: r257406

Add upstream svn rev for PR sanitizer/82825.

From-SVN: r257405

Daily bump.

From-SVN: r257404

* sv.po: Update.

From-SVN: r257401

PR tree-optimization/83369 - Missing diagnostics during inlining

gcc/ChangeLog:

PR tree-optimization/83369
* tree-ssa-ccp.c (pass_post_ipa_warn::execute): Use %G to print
inlining context.

gcc/testsuite/ChangeLog:

PR tree-optimization/83369
gcc.dg/Wnonnull.c: New test.

From-SVN: r257400

Make lto.exp work with Tcl 8.4

"dict" was added in Tcl 8.5, but until a couple of weeks ago the
testsuite had worked with 8.4.

This patch uses arrays instead, like we do for the caching in
target-supports.exp.  It is a bit uglier than using dicts was,
but hopefully not too bad...

2018-02-05  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/testsuite/
* lib/lto.exp (lto_handle_diagnostics): Remove messages_by_file
argument and use dg-messages-by-file instead.  Expect it to be
an array rather than a dict.
(lto-link-and-maybe-run): Remove messages_by_file argument and
use an upvar for dg-messages-by-file.  Update call to
lto_handle_diagnostics.
(lt-get-options): Treat dg-messages-by-file as an array
rather than a dict.
(lto-get-options-main): Likewise.  Set the entry rather than appending.
(lto-execute): Treat dg-messages-by-file as an array rather than
a dict.  Update call to lto-link-and-maybe-run.

From-SVN: r257397

compiler: rollback "avoid negative zero in float constants"

    It uses functions that are not available in MPFR 2.4.2, which is the
    current version supported by GCC.

    Original change description:

        compiler: avoid negative zero in float constants

        Check for negative numbers with very small magnitudes that will round
        to negative zero, and force them to positive zero instead.

        This implements the spec clarification in https://golang.org/cl/14727.
        The test is in https://golang.org/cl/91895.

        Fixes golang/go#12621

    Updates golang/go#12621

    Reviewed-on: https://go-review.googlesource.com/92055

From-SVN: r257393

compiler: avoid negative zero in float constants

    Check for negative numbers with very small magnitudes that will round
    to negative zero, and force them to positive zero instead.

    This implements the spec clarification in https://golang.org/cl/14727.
    The test is in https://golang.org/cl/91895.

    Fixes golang/go#12621

    Reviewed-on: https://go-review.googlesource.com/91915

From-SVN: r257390

class.c: Remove unused global variables.

* class.c: Remove unused global variables.
        (build_primary_vtable): Don't gather statistics.
(print_class_statistics): Remove.
* cp-tree.h (print_class_statistics): Remove.
* tree.c (cxx_print_statistics): Don't call print_class_statistics.

From-SVN: r257389

re PR c++/82782 (ICE: nested template alias and specialized template with auto template parameter)

2018-02-05  Paolo Carlini  <paolo.carlini@oracle.com>

PR c++/82782
* g++.dg/cpp1z/inline-var4.C: New.

From-SVN: r257388

Cherry-pick libsanitizer pointer-pair tristate option.

2018-02-05  Martin Liska  <mliska@suse.cz>

* doc/invoke.texi: Cherry-pick upstream r323995.
2018-02-05  Martin Liska  <mliska@suse.cz>

* c-c++-common/asan/pointer-compare-1.c: Adjust ASAN_OPTIONS
options.
* c-c++-common/asan/pointer-compare-2.c: Likewise.
* c-c++-common/asan/pointer-subtract-1.c: Likewise.
* c-c++-common/asan/pointer-subtract-2.c: Likewise.
* c-c++-common/asan/pointer-subtract-3.c: Likewise.
* c-c++-common/asan/pointer-subtract-4.c: Likewise.
* c-c++-common/asan/pointer-compare-3.c: New test.
2018-02-05  Martin Liska  <mliska@suse.cz>

* asan/asan_flags.inc: Cherry-pick upstream r323995.
* asan/asan_report.cc (CheckForInvalidPointerPair):
Cherry-pick upstream r323995.

From-SVN: r257387

[AArch64] Remove SVE XFAILs

These tests started passing after r257293, which had the side-effect
of renumbering the SSA names and leaving the COND_EXPRs in their
natural order.

This does show a deeper underlying issue that code generation is too
sensitive to internal things like SSA_NAME versions, but it no longer
affects these particular tests (for now).

2018-02-05  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/testsuite/
* gcc.target/aarch64/sve/vcond_4.c: Remove XFAILs.
* gcc.target/aarch64/sve/vcond_5.c: Likewise.

From-SVN: r257386

Adjust ira_init_register_move_cost comment

2018-02-05  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
* ira.c (ira_init_register_move_cost): Adjust comment.

From-SVN: r257385

Fix GCOV documentation (PR gcov-profile/84137).

2018-02-05  Martin Liska  <mliska@suse.cz>

PR gcov-profile/84137
* doc/gcov.texi: Fix typo in documentation.

From-SVN: r257384

Document --dynamic-list-data option for --coverage usage.

2018-02-05  Martin Liska  <mliska@suse.cz>

PR gcov-profile/83879
* doc/gcov.texi: Document necessity of --dynamic-list-data when
using dlopen functionality.

From-SVN: r257383

Add missing mask[z]_range[_round]_s[d,s] intrinsics

gcc/
* config/i386/avx512dqintrin.h (_mm_mask_range_sd, _mm_maskz_range_sd,
_mm_mask_range_round_sd, _mm_maskz_range_round_sd, _mm_mask_range_ss,
_mm_maskz_range_ss, _mm_mask_range_round_ss,
_mm_maskz_range_round_ss): New intrinsics.
(__builtin_ia32_rangesd128_round)
(__builtin_ia32_rangess128_round): Remove.
(__builtin_ia32_rangesd128_mask_round,
__builtin_ia32_rangess128_mask_round): New builtins.
* config/i386/i386-builtin.def (__builtin_ia32_rangesd128_round,
__builtin_ia32_rangess128_round): Remove.
(__builtin_ia32_rangesd128_mask_round,
__builtin_ia32_rangess128_mask_round): New builtins.
* config/i386/sse.md (ranges<mode><round_saeonly_name>): Renamed to ...
(ranges<mode><mask_scalar_name><round_saeonly_scalar_name>): ... this.
((match_operand:VF_128 2 "<round_saeonly_nimm_predicate>"
"<round_saeonly_constraint>")): Changed to ...
((match_operand:VF_128 2 "<round_saeonly_scalar_nimm_predicate>"
"<round_saeonly_scalar_constraint>")): ... this.
("vrange<ssescalarmodesuffix>\t{%3, <round_saeonly_op4>%2, %1, %0|
%0, %1, %2<round_saeonly_op4>, %3}"): Changed to ...
("vrange<ssescalarmodesuffix>\t{%3, <round_saeonly_scalar_mask_op4>%2,
%1, %0<mask_scalar_operand4>|%0<mask_scalar_operand4>, %1,
%2<round_saeonly_scalar_mask_op4>, %3}"): ... this.
gcc/testsuite
* gcc.target/i386/avx512dq-vrangesd-1.c (_mm_mask_range_sd,
_mm_maskz_range_sd, _mm_mask_range_round_sd,
_mm_maskz_range_round_sd): Test new intrinsics.
* gcc.target/i386/avx512dq-vrangesd-2.c (_mm_range_sd,
_mm_mask_range_sd, _mm_maskz_range_sd, _mm_range_round_sd,
_mm_mask_range_round_sd, _mm_maskz_range_round_sd): Test new intrinsics.
* gcc.target/i386/avx512dq-vrangess-1.c (_mm_mask_range_ss,
_mm_maskz_range_ss, _mm_mask_range_round_ss,
_mm_maskz_range_round_ss): Test new intrinsics.
* gcc.target/i386/avx512dq-vrangess-2.c (_mm_range_ss,
_mm_mask_range_ss, _mm_maskz_range_ss, _mm_range_round_ss,
_mm_mask_range_round_ss, _mm_maskz_range_round_ss): Test new intrinsics.
* gcc.target/i386/avx-1.c (__builtin_ia32_rangesd128_round,
__builtin_ia32_rangess128_round): Remove builtins.
(__builtin_ia32_rangesd128_mask_round,
__builtin_ia32_rangess128_mask_round): Test new builtins.
* gcc.target/i386/sse-13.c: Ditto.
* gcc.target/i386/sse-23.c: Ditto.

From-SVN: r257382

compiler: update iota handling, fix using iota in array length

    CL 71750 changed the definition of how iota works.  This patch updates
    gccgo for the new definition.

    We've been mishandling iota appearing in a type that appears in a
    const expression, as in `c = len([iota]int{})`.  Correct that by copying
    type expressions when we copy an expression.  For simplicity only copy
    when it can change the size of a type, as that is the only case where
    iota in a type can affect the value of a constant (I think).  This is
    still a bunch of changes, but almost all boilerplate.

    Fixes golang/go#22341

    Reviewed-on: https://go-review.googlesource.com/91475

From-SVN: r257379

compiler: permit empty statements after fallthrough

    The language spec permits empty statements after a fallthrough
    statement, so implement that.  Also give a better error message when a
    fallthrough statement is in the wrong place.  The test case for this
    is in the master repository, test/fixedbugs/issue14540.go, just not
    yet in the gccgo repository.

    Fixes golang/go#14538

    Reviewed-on: https://go-review.googlesource.com/91855

From-SVN: r257378

compiler: in range, evaluate array if it has receives or calls

    The last change was incomplete, in that it did not evaluate the array
    argument in some cases where it had to be evaluated.  This reuses the
    existing code for checking whether len/cap is constant.

    Also clean up the use of _ as the second variable in a for/range,
    which was previously inconsistent depending on whether the statement
    used = or :=.

    Updates golang/go#22313

    Reviewed-on: https://go-review.googlesource.com/91715

From-SVN: r257377

compiler: give error for non-int arguments to make

    This implements a requirement of the language spec.

    While we're here fix the value returned by the type method of a
    builtin call expression to make, although this doesn't seem to make
    any difference anywhere since we lower this to a runtime call before
    the determine_types pass anyhow.

    There is already a test for this error in the master repository:
    test/fixedbugs/issue16949.go. It just hasn't made it into the gccgo
    testsuite yet.

    Fixes golang/go#16949

    Reviewed-on: https://go-review.googlesource.com/91697

From-SVN: r257376

compiler: don't error for goto over type or const declaration

    We should only issue an error for a goto over a var declaration.

    The test case for this is already in the master repository, at
    test/fixedbugs/issue8042.go.  It just hasn't been copied into the
    gccgo repository yet.

    Fixes golang/go#19089

    Reviewed-on: https://go-review.googlesource.com/91696

From-SVN: r257375

compiler: correct parse of parenthesized select case

    We used to mishandle `select { case (<-c): }` and friends.

    The test case for this is https://golang.org/cl/91657.

    Fixes golang/go#20923

    Reviewed-on: https://go-review.googlesource.com/91695

From-SVN: r257374

cmd/go: don't lose last flag from _cgo_flags

    The quoting code that read _cgo_flags, currently only in the gccgo
    version of cmd/go, was losing the last flag read from the file.

    Fixes golang/go#23666

    Reviewed-on: https://go-review.googlesource.com/91655

From-SVN: r257373

Daily bump.

From-SVN: r257372

re PR ipa/79966 (run time more than twice slower when using -fipa-cp-clone)

PR middle-end/79966
* gfortran.dg/pr79966.f90: New testcase

From-SVN: r257367

* es.po: Update.

From-SVN: r257366

* ru.po: Update.

From-SVN: r257365

re PR fortran/84094 (several correctness issues in gfortran.dg)

2018-02-04  Dominique d'Humieres <dominiq@gcc.gnu.org>

PR fortran/84094
* gfortran.dg/associate_23.f90: Fix invalid code.
* gfortran.dg/intrinsic_actual_4.f90: Likewise.
* gfortran.dg/matmul_3.f90: Likewise.
* gfortran.dg/transfer_array_intrinsic_2.f90: Likewise.

From-SVN: r257364

re PR fortran/84115 (Failure in associate construct with concatenated character target)

2018-02-04  Paul Thomas  <pault@gcc.gnu.org>

PR fortran/84115
* trans-decl.c (gfc_get_symbol_decl): Do not finish the decl of
'length' if the symbol charlen backend_decl is an indirect ref.

2018-02-04  Paul Thomas  <pault@gcc.gnu.org>

PR fortran/84115
* gfortran.dg/associate_34.f90: New test.
* gfortran.dg/associate_35.f90: New test.

From-SVN: r257363

Daily bump.

From-SVN: r257362

go-gcc.cc (Gcc_backend::fill_in_struct): Mark struct types as using structural equality.

* go-gcc.cc (Gcc_backend::fill_in_struct): Mark struct types as
using structural equality.

From-SVN: r257357

re PR fortran/84141 (Internal error: type_name(): Bad type)

2018-02-03  Paul Thomas  <pault@gcc.gnu.org>

PR fortran/84141
PR fortran/84155
* trans-array.c (gfc_array_init_size): Instead of gfc_get_dtype
use gfc_get_dtype_rank_type.

2018-02-03  Paul Thomas  <pault@gcc.gnu.org>

PR fortran/84141
PR fortran/84155
* gfortran.dg/pr84155.f90 : New test.

From-SVN: r257356

Daily bump.

From-SVN: r257355

* pt_BR.po: Update.

From-SVN: r257350

c-common.h (DECL_UNNAMED_BIT_FIELD): New.

/c-family
2018-02-02  Paolo Carlini  <paolo.carlini@oracle.com>

* c-common.h (DECL_UNNAMED_BIT_FIELD): New.

/c
2018-02-02  Paolo Carlini  <paolo.carlini@oracle.com>

* c-typeck.c (really_start_incremental_init, push_init_level,
set_nonincremental_init, output_init_element, process_init_element):
Use DECL_UNNAMED_BIT_FIELD.

/cp
2018-02-02  Paolo Carlini  <paolo.carlini@oracle.com>

* class.c (is_really_empty_class): Use DECL_UNNAMED_BIT_FIELD.
* constexpr.c (cx_check_missing_mem_inits): Likewise.
* decl.c (next_initializable_field, find_decomp_class_base,
cp_finish_decomp): Likewise.
* typeck2.c (process_init_constructor_record): Likewise.

From-SVN: r257348

decl.c (array_type_has_nonaliased_component): Return false if the component type is a pointer.

* gcc-interface/decl.c (array_type_has_nonaliased_component): Return
false if the component type is a pointer.

From-SVN: r257344

re PR lto/83954 (LTO: Bogus -Wlto-type-mismatch warning for array of pointer to incomplete type)

PR lto/83954
* lto-symtab.c (warn_type_compatibility_p): Do not recurse into the
component type of array types with non-aliased component.

From-SVN: r257343

powerpcspe.opt: Add Undocumented to irrelevant options.

       * config/powerpcspe/powerpcspe.opt: Add Undocumented to irrelevant
       options.
       * config/powerpcspe/powerpcspe-tables.opt (rs6000_cpu_opt_value):
       Remove all values except native, 8540 and 8548.

From-SVN: r257342

i386: Pass INVALID_REGNUM as invalid register number

* config/i386/i386.c (ix86_output_function_return): Pass
INVALID_REGNUM, instead of -1, as invalid register number to
indirect_thunk_name and output_indirect_thunk.

From-SVN: r257340

PR c++/84181 - ICE with lambda parm in template argument.

* tree.c (strip_typedefs_expr): Use cp_tree_operand_length.

From-SVN: r257339

dec_parameter_1.f (sub1): Remove statement with no effect.

* gfortran.dg/dec_parameter_1.f (sub1): Remove statement with no effect.
* gfortran.dg/dec_parameter_2.f90 (sub1): Ditto.

From-SVN: r257337

vec-cmpne-long.c: Add p8vector_hw require to dg-do run stanza.

[testsuite]

2018-02-02  Will Schmidt  <will_schmidt@vnet.ibm.com>

* gcc.target/powerpc/vec-cmpne-long.c: Add p8vector_hw require to
dg-do run stanza.

From-SVN: r257336

fold-vec-abs-int.p9.c: Add powerpc_p9vector_ok requirement.

[testsuite]

2018-01-31  Will Schmidt  <will_schmidt@vnet.ibm.com>

* gcc.target/powerpc/fold-vec-abs-int.p9.c: Add powerpc_p9vector_ok
requirement.
* gcc.target/powerpc/fold-vec-abs-int-fwrapv.p9.c: Same.
* gcc.target/powerpc/fold-vec-cmp-char.p9.c: Same.
* gcc.target/powerpc/fold-vec-neg-int.p9.c: Same.

From-SVN: r257335

go-gcc.cc (Gcc_backend::type_size): Return 0 for void_type_node.

* go-gcc.cc (Gcc_backend::type_size): Return 0 for
void_type_node.
(Gcc_backend::convert_expression): Don't convert if the type of
expr_tree is void_type_node.
(Gcc_backend::array_index_expression): Don't index if the type of
the array expression is void_type_node.
(Gcc_backend::init_statement): Don't initialize if the type of the
initializer expression is void_type_node.
(Gcc_backend::assignment_statement): Don't assign if the type of
either the left or right hand side is void_type_node.
(Gcc_backend::temporary_variable): Don't initialize if the type of
the initializer expression is void_type_node.

From-SVN: r257334

re PR testsuite/52641 (Test cases fail for 16-bit int targets)

PR testsuite/52641
* gcc.c-torture/execute/pr83362.c: Make work for int16.
* gcc.dg/Wsign-conversion.c: Dito.
* gcc.dg/attr-alloc_size-4.c: Dito.
* gcc.dg/pr81020.c: Dito.
* gcc.dg/pr81192.c: Dito.
* gcc.dg/pr83463.c (dg-options): Add -Wno-pointer-to-int-cast.
* gcc.dg/attr-alloc_size-11.c: Also special-case avr.
* gcc.dg/pr83844.c: Restrict to int32plus.
* gcc.dg/attr-alloc_size-3.c: Restrict to size32plus.
* gcc.dg/tree-ssa/ldist-25.c: Dito.
* gcc.dg/tree-ssa/ldist-27.c: Dito.
* gcc.dg/tree-ssa/ldist-28.c: Dito.
* gcc.dg/tree-ssa/ldist-29.c: Dito.
* gcc.dg/tree-ssa/ldist-30.c: Dito.
* gcc.dg/tree-ssa/ldist-31.c: Dito.
* gcc.dg/tree-ssa/ldist-32.c: Dito.
* gcc.dg/tree-ssa/ldist-33.c: Dito.
* gcc.dg/tree-ssa/ldist-34.c: Dito.
* gcc.dg/tree-ssa/ldist-35.c: Dito.
* gcc.dg/tree-ssa/ldist-36.c: Dito.

From-SVN: r257333

Add -march=icelake.

gcc/
* config.gcc: Add -march=icelake.
* config/i386/driver-i386.c (host_detect_local_cpu): Detect icelake.
* config/i386/i386-c.c (ix86_target_macros_internal): Handle icelake.
* config/i386/i386.c (processor_costs): Add m_ICELAKE.
(PTA_ICELAKE, PTA_AVX512VNNI, PTA_GFNI, PTA_VAES, PTA_AVX512VBMI2,
PTA_VPCLMULQDQ, PTA_RDPID, PTA_AVX512BITALG): New.
(processor_target_table): Add icelake.
(ix86_option_override_internal): Handle new PTAs.
(get_builtin_code_for_version): Handle icelake.
(M_INTEL_COREI7_ICELAKE): New.
(fold_builtin_cpu): Handle icelake.
* config/i386/i386.h (TARGET_ICELAKE, PROCESSOR_ICELAKE): New.
* doc/invoke.texi: Add -march=icelake.
gcc/testsuite/
* gcc.target/i386/funcspec-56.inc: Handle new march.
* g++.dg/ext/mv16.C: Ditto.
libgcc/
* config/i386/cpuinfo.h (processor_subtypes): Add INTEL_COREI7_ICELAKE.

From-SVN: r257331

compiler: don't incorrectly evaluate range variable

    The language spec says that in `for i = range x`, in which there is no
    second iteration variable, if len(x) is constant, then x is not
    evaluated.  This only matters when x is an expression that panics but
    whose type is an array type; in such a case, we should not evaluate x,
    since len of any array type is a constant.

    Fixes golang/go#22313

    Reviewed-on: https://go-review.googlesource.com/91555

From-SVN: r257330

Move omp bitmask to general to use it in x86 backend.

gcc/c-family/
* c-common.h (omp_clause_mask): Move to wide_int_bitmask.h.

gcc/
* config/i386/i386.c (ix86_option_override_internal): Change flags type
to wide_int_bitmask.
* wide-int-bitmask.h: New.

From-SVN: r257329

Reduce fallout for avr.

* lib/target-supports.exp
(check_effective_target_keeps_null_pointer_checks): No more
special-case avr.
* gcc.dg/tree-ssa/pr21086.c (dg-final): Special-case avr.
* gcc.dg/ifcvt-4.c: Skip avr.
* gcc.dg/pr53037-1.c: Dito.
* gcc.dg/pr53037-2.c: Dito.
* gcc.dg/pr53037-3.c: Dito.
* gcc.dg/pr63387-2.c: Dito.
* gcc.dg/pr63387.c: Dito.
* gcc.dg/sancov/cmp0.c: Dito.
* gcc.dg/tree-ssa/loop-interchange-1.c: Dito.
* gcc.dg/tree-ssa/loop-interchange-10.c: Dito.
* gcc.dg/tree-ssa/loop-interchange-11.c: Dito.
* gcc.dg/tree-ssa/loop-interchange-1b.c: Dito.
* gcc.dg/tree-ssa/loop-interchange-2.c: Dito.
* gcc.dg/tree-ssa/loop-interchange-3.c: Dito.
* gcc.dg/tree-ssa/loop-interchange-4.c: Dito.
* gcc.dg/tree-ssa/loop-interchange-5.c: Dito.
* gcc.dg/tree-ssa/loop-interchange-6.c: Dito.
* gcc.dg/tree-ssa/loop-interchange-7.c: Dito.
* gcc.dg/tree-ssa/loop-interchange-8.c: Dito.
* gcc.dg/tree-ssa/loop-interchange-9.c: Dito.
* gcc.dg/tree-ssa/pr82059.c: Dito.
* gcc.c-torture/execute/pr70460.c: Dito.

From-SVN: r257328

re PR testsuite/52641 (Test cases fail for 16-bit int targets)

PR testsuite/52641
* gcc.c-torture/execute/pr81913.c: Use types that also work for int16.
* gcc.c-torture/execute/20180112-1.c: Dito.
* gcc.c-torture/execute/pr81503.c: Dito.
* gcc.dg/store_merging_12.c: Dito.
* gcc.dg/tree-ssa/loop-niter-1.c: Dito.
* gcc.dg/tree-ssa/loop-niter-2.c: Dito.
* gcc.dg/tree-ssa/pr80898.c: Dito.
* gcc.dg/tree-ssa/pr82363.c: Dito.
* gcc.dg/utf16-4.c: Also allow "short unsigned int" in dg-warning.
* gcc.dg/tree-ssa/pr81346-5.c: Special-case int16.
* gcc.dg/tree-ssa/ssa-sink-11.c: Dito.
* gcc.dg/tree-ssa/ssa-sink-12.c: Dito.
* gcc.dg/torture/pr81814.c: Restrict to int32plus.
* gcc.dg/tree-ssa/pr80803.c: Dito.
* gcc.dg/tree-ssa/pr80898-2.c: Dito.
* gcc.dg/tree-ssa/pr81346-4.c: Dito.
* gcc.dg/tree-ssa/vrp114.c: Dito.
* gcc.dg/tree-ssa/pr82574.c: Restrict to size32plus.
* gcc.dg/tree-ssa/ssa-dom-thread-13.c: Dito.
* gcc.dg/tree-ssa/ssa-sink-15.c: Dito.

From-SVN: r257327

PR84066 Wrong shadow stack register size is saved for x32

x32 is a 64-bit process with 32-bit software pointer and kernel may
place x32 shadow stack above 4GB.  We need to save and restore 64-bit
shadow stack register for x32. builtin jmp buf size is 5 pointers.  We
have space to save 64-bit shadow stack pointers: 32-bit SP, 32-bit FP,
32-bit IP, 64-bit SSP for x32.

PR target/84066
* gcc/config/i386/i386.md: Replace Pmode with word_mode in
builtin_setjmp_setup and builtin_longjmp to support x32.
* gcc/testsuite/gcc.target/i386/cet-sjlj-6a.c: New test.
* gcc/testsuite/gcc.target/i386/cet-sjlj-6b.c: Likewise.

From-SVN: r257326

PR c++/84160 - ICE with nested variadic capture.

* lambda.c (is_capture_proxy_with_ref): New.
(insert_capture_proxy): Don't set DECL_CAPTURED_VARIABLE from a
COMPONENT_REF.
* expr.c (mark_use): Use is_capture_proxy_with_ref.
* constexpr.c (potential_constant_expression_1): Likewise.
* semantics.c (process_outer_var_ref): Likewise.

From-SVN: r257325

reflect: enable allocation tests

    They were disabled due to the lack of escape analysis. Now that
    we have escape analysis, unskip these tests.

    Reviewed-on: https://go-review.googlesource.com/86248

From-SVN: r257324

runtime: scan register backing store on ia64

    On ia64, a separate stack is used for saving/restoring register frames,
    occupying the other end of the stack mapping. This must also be scanned
    for pointers into the heap.

    Reviewed-on: https://go-review.googlesource.com/85276

From-SVN: r257323

Daily bump.

From-SVN: r257322

compiler: turn on escape analysis by default

    The escape analysis now runs by default. It can be disabled with
    the negative flag, -fno-go-optimize-allocs.

    Reviewed-on: https://go-review.googlesource.com/86247

* lang.opt (fgo-optimize): Remove RejectNegative.
* go-c.h (go_enable_optimize): Update declaration to take value
argument.
* go-lang.c (go_langhook_handle_option): Pass value to
go_enable_optimize.
* gccgo.texi (Invoking gccgo): Update -fgo-optimize-allocs doc.

From-SVN: r257319

Change accidentally omitted from revision 257280.

From-SVN: r257313

math: adjust compilation flags, use them when testing

    We were using special compilation flags for the math package, but we
    weren't using them when testing.  That meant that our tests were not
    checking the real code we were providing.  Fix that.

    Fixing that revealed that we were not using a good set of flags, or at
    least were not using flags that let the tests pass.  Adjust the flags
    to stop using -funsafe-math-optimizations on x86.  Instead always use
    -ffp-contract=off -fno-math-errno -fno-trapping-math for all targets.

    Fixes golang/go#23647

    Reviewed-on: https://go-review.googlesource.com/91355

From-SVN: r257312

re PR c++/84125 (ICE in generic lambda when static_assert argument is implicitly converted to bool)

PR c++/84125
* typeck.c (build_address): Relax the assert when
processing_template_decl.

* g++.dg/cpp1y/lambda-generic-84125.C:New test.

From-SVN: r257311

PR 83975 Associate target with non-constant character length

When associating a variable of type character, if the length of the
target isn't known at compile time, generate an error. See PR 83344
for more details.

Regtested on x86_64-pc-linux-gnu.

gcc/fortran/ChangeLog:

2018-02-01  Janne Blomqvist  <jb@gcc.gnu.org>

PR 83975
PR 83344
* resolve.c (resolve_assoc_var): Generate an error if
target length unknown.

From-SVN: r257310

PR c++/84126 - ICE with variadic generic lambda

PR c++/84036
PR c++/82249
* pt.c (tsubst_pack_expansion): Handle function parameter_packs in
PACK_EXPANSION_EXTRA_ARGS.

From-SVN: r257307

re PR target/56010 (Powerpc, -mcpu=native and -mtune=native  use the wrong name for target 7450)

PR target/56010
PR target/83743
* config/rs6000/driver-rs6000.c: #include "diagnostic.h".
#include "opts.h".
(rs6000_supported_cpu_names): New static variable.
(linux_cpu_translation_table): Likewise.
(elf_platform) <cpu>: Define new static variable and use it.
Translate kernel AT_PLATFORM name to canonical name if needed.
Error if platform name is unknown.

From-SVN: r257305

re PR middle-end/84089 (FAIL: g++.dg/cpp1y/lambda-generic-x.C  -std=gnu++14 (internal compiler error))

PR target/84089
* config/pa/predicates.md (base14_operand): Handle E_VOIDmode.

From-SVN: r257304

re PR target/84128 (i686: Stack spilling in -fstack-clash-protection prologue neglects %esp change)

PR target/84128
* config/i386/i386.c (release_scratch_register_on_entry): Add new
OFFSET and RELEASE_VIA_POP arguments.  Use SP+OFFSET to restore
the scratch if RELEASE_VIA_POP is false.
(ix86_adjust_stack_and_probe_stack_clash): Un-constify SIZE.
If we have to save a temporary register, decrement SIZE appropriately.
Pass new arguments to release_scratch_register_on_entry.
(ix86_adjust_stack_and_probe): Likewise.
(ix86_emit_probe_stack_range): Pass new arguments to
release_scratch_register_on_entry.

PR target/84128
* gcc.target/i386/pr84128.c: New test.

From-SVN: r257303

re PR rtl-optimization/84157 ([nvptx] ICE: RTL check: expected code 'reg', have 'lshiftrt')

PR rtl-optimization/84157
* combine.c (change_zero_ext): Use REG_P predicate in
front of HARD_REGISTER_P predicate.

From-SVN: r257302

avr.c (avr_option_override): Move disabling of -fdelete-null-pointer-checks to...

gcc/
* config/avr/avr.c (avr_option_override): Move disabling of
-fdelete-null-pointer-checks to...
* common/config/avr/avr-common.c (avr_option_optimization_table):
...here.
testsuite/
* gcc.dg/tree-ssa/vrp111.c (dg-options): Add
-fdelete-null-pointer-checks.

From-SVN: r257301

compiler: omit field name for embedded fields in reflection string

    This matches the gc compiler.

    The test case was sent for the master repo as
    https://golang.org/cl/91138.

    Fixes golang/go#23620

    Reviewed-on: https://go-review.googlesource.com/91139

From-SVN: r257300

net: declare lib_getaddrinfo as returning int32

    Otherwise on a 64-bit system we will read the 32-bit value as a 64-bit
    value.  Since getaddrinfo returns negative numbers as error values,
    these will be interpreted as numbers like 0xfffffffe rather than -2,
    and the comparisons with values like syscall.EAI_NONAME will fail.

    Fixes golang/go#23645

    Reviewed-on: https://go-review.googlesource.com/91296

From-SVN: r257299

re PR c++/83796 (Abstract classes allowed to be instantiated when initialised as default parameter to function or constructor)

/cp
2018-02-01  Paolo Carlini  <paolo.carlini@oracle.com>

PR c++/83796
* call.c (convert_like_real): If w're initializing from {} explicitly
call abstract_virtuals_error_sfinae.

/testsuite
2018-02-01  Paolo Carlini  <paolo.carlini@oracle.com>

PR c++/83796
* g++.dg/cpp0x/abstract-default1.C: New.

From-SVN: r257298

Use range info in split_constant_offset (PR 81635)

This patch implements the original suggestion for fixing PR 81635:
use range info in split_constant_offset to see whether a conversion
of a wrapping type can be split.  The range info problem described in:

    https://gcc.gnu.org/ml/gcc-patches/2017-08/msg01002.html

seems to have been fixed.

The patch is part 1.  There needs to be a follow-on patch to handle:

  for (unsigned int i = 0; i < n; i += 4)
    {
      ...[i + 2]...
      ...[i + 3]...

which the old SCEV test handles, but which the range check doesn't.
At the moment we record that the low two bits of "i" are clear,
but we still end up with a maximum range of 0xffffffff rather than
0xfffffffc.

2018-01-31  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
PR tree-optimization/81635
* tree-data-ref.c (split_constant_offset_1): For types that
wrap on overflow, try to use range info to prove that wrapping
cannot occur.

gcc/testsuite/
PR tree-optimization/81635
* gcc.dg/vect/bb-slp-pr81635-1.c: New test.
* gcc.dg/vect/bb-slp-pr81635-2.c: Likewise.

From-SVN: r257296

[PR83370][AARCH64]Use tighter register constraint for sibcall patterns.

In aarch64 backend, ip0/ip1 register will be used in the prologue/epilogue as
temporary register.

When the compiler is performing sibcall optimization. It has the chance to use
ip0/ip1 register for indirect function call to hold the address. However,
those two register might be clobbered by the epilogue code which makes the
last sibcall instruction invalid.

The patch here renames the register class CALLER_SAVE_REGS to TAILCALL_ADDR_REGS
to reflect its usage, and remove IP registers from this class.

gcc/

2018-02-01  Renlin Li  <renlin.li@arm.com>

PR target/83370
* config/aarch64/aarch64.c (aarch64_class_max_nregs): Handle
TAILCALL_ADDR_REGS.
(aarch64_register_move_cost): Likewise.
* config/aarch64/aarch64.h (reg_class): Rename CALLER_SAVE_REGS to
TAILCALL_ADDR_REGS.
(REG_CLASS_NAMES): Likewise.
(REG_CLASS_CONTENTS): Rename CALLER_SAVE_REGS to
TAILCALL_ADDR_REGS. Remove IP registers.
* config/aarch64/aarch64.md (Ucs): Update register constraint.

gcc/testsuite/

2018-02-01  Richard Sandiford  <richard.sandiford@linaro.org>

PR target/83370
* gcc.target/aarch64/pr83370.c: New.

From-SVN: r257294

domwalk.h (dom_walker::dom_walker): Add additional constructor for specifying RPO order and allow NULL for that.

2018-02-01  Richard Biener  <rguenther@suse.de>

* domwalk.h (dom_walker::dom_walker): Add additional constructor
for specifying RPO order and allow NULL for that.
* domwalk.c (dom_walker::dom_walker): Likewise.
(dom_walker::walk): Handle NULL RPO order.
* tree-into-ssa.c (rewrite_dom_walker): Do not walk dom children
in RPO order.
(rewrite_update_dom_walker): Likewise.
(mark_def_dom_walker): Likewise.

* gcc.dg/graphite/pr35356-1.c: Adjust.

From-SVN: r257293

[AArch64] Fix SVE testsuite failures for ILP32 (PR 83846)

The SVE tests are split into code-quality compile tests and runtime
tests.  A lot of the former are geared towards LP64.  It would be
possible (but tedious!) to mark up every line that is expected to work
only for LP64, but I think it would be a constant source of problems.

Since the code has not been tuned for ILP32 yet, I think the best
thing is to select only the runtime tests for that combination.
They all pass on aarch64-elf and aarch64_be-elf except vec-cond-[34].c,
which are unsupported due to the lack of fenv support.

The patch also replaces uses of built-in types with stdint.h types
where possible.  (This excludes tests that change the endianness,
since we can't assume that system header files work in that case.)

2018-02-01  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/testsuite/
PR testsuite/83846
* gcc.target/aarch64/sve/aarch64-sve.exp: Only do *_run tests
for ILP32.
* gcc.target/aarch64/sve/clastb_2_run.c (main): Use TYPE instead
of hard-coding the choice.
* gcc.target/aarch64/sve/clastb_4_run.c (main): Likewise.
* gcc.target/aarch64/sve/clastb_5_run.c (main): Likewise.
* gcc.target/aarch64/sve/clastb_3_run.c (main): Likewise.  Generalize
memset call.
* gcc.target/aarch64/sve/const_pred_1.C: Include stdint.h and use
stdint.h types.
* gcc.target/aarch64/sve/const_pred_2.C: Likewise.
* gcc.target/aarch64/sve/const_pred_3.C: Likewise.
* gcc.target/aarch64/sve/const_pred_4.C: Likewise.
* gcc.target/aarch64/sve/load_const_offset_2.c: Likewise.
* gcc.target/aarch64/sve/logical_1.c: Likewise.
* gcc.target/aarch64/sve/mask_struct_load_1.c: Likewise.
* gcc.target/aarch64/sve/mask_struct_load_2.c: Likewise.
* gcc.target/aarch64/sve/mask_struct_load_3.c: Likewise.
* gcc.target/aarch64/sve/mask_struct_load_4.c: Likewise.
* gcc.target/aarch64/sve/mask_struct_load_5.c: Likewise.
* gcc.target/aarch64/sve/mask_struct_load_6.c: Likewise.
* gcc.target/aarch64/sve/mask_struct_load_7.c: Likewise.
* gcc.target/aarch64/sve/mask_struct_load_8.c: Likewise.
* gcc.target/aarch64/sve/mask_struct_store_1.c: Likewise.
* gcc.target/aarch64/sve/mask_struct_store_2.c: Likewise.
* gcc.target/aarch64/sve/mask_struct_store_3.c: Likewise.
* gcc.target/aarch64/sve/mask_struct_store_4.c: Likewise.
* gcc.target/aarch64/sve/struct_vect_1.c: Likewise.
* gcc.target/aarch64/sve/struct_vect_2.c: Likewise.
* gcc.target/aarch64/sve/struct_vect_2_run.c: Likewise.
* gcc.target/aarch64/sve/struct_vect_3.c: Likewise.
* gcc.target/aarch64/sve/struct_vect_3_run.c: Likewise.
* gcc.target/aarch64/sve/struct_vect_4.c: Likewise.
* gcc.target/aarch64/sve/struct_vect_4_run.c: Likewise.
* gcc.target/aarch64/sve/struct_vect_7.c: Likewise.
* gcc.target/aarch64/sve/struct_vect_8.c: Likewise.
* gcc.target/aarch64/sve/struct_vect_8_run.c: Likewise.
* gcc.target/aarch64/sve/struct_vect_9.c: Likewise.
* gcc.target/aarch64/sve/struct_vect_9_run.c: Likewise.
* gcc.target/aarch64/sve/struct_vect_10.c: Likewise.
* gcc.target/aarch64/sve/struct_vect_10_run.c: Likewise.
* gcc.target/aarch64/sve/struct_vect_11.c: Likewise.
* gcc.target/aarch64/sve/struct_vect_11_run.c: Likewise.
* gcc.target/aarch64/sve/struct_vect_12.c: Likewise.
* gcc.target/aarch64/sve/struct_vect_12_run.c: Likewise.
* gcc.target/aarch64/sve/struct_vect_13.c: Likewise.
* gcc.target/aarch64/sve/struct_vect_13_run.c: Likewise.
* gcc.target/aarch64/sve/struct_vect_14.c: Likewise.
* gcc.target/aarch64/sve/struct_vect_18.c: Likewise.
* gcc.target/aarch64/sve/struct_vect_19.c: Likewise.
* gcc.target/aarch64/sve/struct_vect_20.c: Likewise.
* gcc.target/aarch64/sve/struct_vect_21.c: Likewise.
* gcc.target/aarch64/sve/struct_vect_22.c: Likewise.
* gcc.target/aarch64/sve/struct_vect_23.c: Likewise.
* gcc.target/aarch64/sve/popcount_1.c (popcount_64): Use
__builtin_popcountll rather than __builtin_popcountl.

Reviewed-by: James Greenhalgh <james.greenhalgh@arm.com>
From-SVN: r257290

[AArch64] Handle SVE subregs that are effectively REVs

Subreg reads should be equivalent to storing the inner register to
memory and loading the appropriate memory bytes back, with subreg
writes doing the reverse.  For the reasons explained in the comments,
this isn't what happens for big-endian SVE if we simply reinterpret
one vector register as having a different element size, so the
conceptual store and load is needed in the general case.

However, that obviously produces poor code if we do it too often.
The patch therefore adds a pattern for handling the operation in
registers.  This copes with the important case of a VIEW_CONVERT
created by tree-vect-slp.c:duplicate_and_interleave.

It might make sense to tighten the predicates in aarch64-sve.md so
that such subregs are not allowed as operands to most instructions,
but that's future work.

This fixes the sve/slp_*.c tests on aarch64_be.

2018-02-01  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
* config/aarch64/aarch64-protos.h (aarch64_split_sve_subreg_move)
(aarch64_maybe_expand_sve_subreg_move): Declare.
* config/aarch64/aarch64.md (UNSPEC_REV_SUBREG): New unspec.
* config/aarch64/predicates.md (aarch64_any_register_operand): New
predicate.
* config/aarch64/aarch64-sve.md (mov<mode>): Optimize subreg moves
that are semantically a reverse operation.
(*aarch64_sve_mov<mode>_subreg_be): New pattern.
* config/aarch64/aarch64.c (aarch64_maybe_expand_sve_subreg_move):
(aarch64_replace_reg_mode, aarch64_split_sve_subreg_move): New
functions.
(aarch64_can_change_mode_class): For big-endian, forbid changes
between two SVE modes if they have different element sizes.

Reviewed-by: James Greenhalgh <james.greenhalgh@arm.com>
From-SVN: r257289

[AArch64] Prefer LD1RQ for big-endian SVE

This patch deals with cases in which a CONST_VECTOR contains a
repeating bit pattern that is wider than one element but narrower
than 128 bits.  The current code:

* treats the repeating pattern as a single element
* uses the associated LD1R to load and replicate it (such as LD1RD
  for 64-bit patterns)
* uses a subreg to cast the result back to the original vector type

The problem is that for big-endian targets, the final cast is
effectively a form of element reverse.  E.g. say we're using LD1RD to load
16-bit elements, with h being the high parts and l being the low parts:

                               +-----+-----+-----+-----+-----+----
                         lanes |  0  |  1  |  2  |  3  |  4  | ...
                               +-----+-----+-----+-----+-----+----
     memory              bytes |h0 l0 h1 l1 h2 l2 h3 l3 h0 l0 ....
                               +----------------------------------
                                 V  V  V  V  V  V  V  V
                     ----------+-----------------------+
    register         ....      |           0           |
     after           ----------+-----------------------+  lsb
     LD1RD           .... h3 l3 h0 l0 h1 l1 h2 l2 h3 l3|
                     ----------------------------------+

                     ----+-----+-----+-----+-----+-----+
    expected         ... |  4  |  3  |  2  |  1  |  0  |
    register         ----+-----+-----+-----+-----+-----+  lsb
    contents         .... h0 l0 h3 l3 h2 l2 h1 l1 h0 l0|
                     ----------------------------------+

A later patch fixes the handling of general subregs to account
for this, but it means that we need to do a REV instruction
after the load.  It seems better to use LD1RQ[BHW] on a 128-bit
pattern instead, since that gets the endianness right without
a separate fixup instruction.

2018-02-01  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
* config/aarch64/aarch64.c (aarch64_expand_sve_const_vector): Prefer
the TImode handling for big-endian targets.

gcc/testsuite/
* gcc.target/aarch64/sve/slp_2.c: Expect LD1RQ to be used instead
of LD1R[HWD] for multi-element constants on big-endian targets.
* gcc.target/aarch64/sve/slp_3.c: Likewise.
* gcc.target/aarch64/sve/slp_4.c: Likewise.

Reviewed-by: James Greenhalgh <james.greenhalgh@arm.com>
From-SVN: r257288

[AArch64] Use all SVE LD1RQ variants

The fallback way of handling a repeated 128-bit constant vector for SVE
is to force the 128 bits to the constant pool and use LD1RQ to load it.
Previously the code always used the byte variant of LD1RQ (LD1RQB),
with a preceding BSWAP for big-endian targets.  However, that BSWAP
doesn't handle all cases correctly.

The simplest fix seemed to be to use the LD1RQ appropriate for the
element size.

This helps to fix some of the sve/slp_*.c tests for aarch64_be,
although a later patch is needed as well.

2018-02-01  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
* config/aarch64/aarch64-sve.md (sve_ld1rq): Replace with...
(*sve_ld1rq<Vesize>): ... this new pattern.  Handle all element sizes,
not just bytes.
* config/aarch64/aarch64.c (aarch64_expand_sve_widened_duplicate):
Remove BSWAP handing for big-endian targets and use the form of
LD1RQ appropariate for the mode.

gcc/testsuite/
* gcc.target/aarch64/sve/slp_2.c: Expect LD1RQD rather than LD1RQB.
* gcc.target/aarch64/sve/slp_3.c: Expect LD1RQW rather than LD1RQB.
* gcc.target/aarch64/sve/slp_4.c: Expect LD1RQH rather than LD1RQB.

Reviewed-by: James Greenhalgh <james.greenhalgh@arm.com>
From-SVN: r257287

[AArch64] Generalise aarch64_simd_valid_immediate for SVE

The current aarch64_simd_valid_immediate code predates the move
to the new CONST_VECTOR representation, so for variable-length SVE
it only handles duplicates of single elements, rather than duplicates
of repeating patterns.

This patch removes the restriction.  It means that the validity
of a duplicated constant depends only on the bit pattern, not on
the mode used to represent it.

The patch is needed by a later big-endian fix.

2018-02-01  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
* config/aarch64/aarch64.c (aarch64_simd_valid_immediate): Handle
all CONST_VECTOR_DUPLICATE_P vectors, not just those with a single
duplicated element.

Reviewed-by: James Greenhalgh <james.greenhalgh@arm.com>
From-SVN: r257286

[AArch64] Tighten aarch64_secondary_reload condition (PR 83845)

aarch64_secondary_reload enforced a secondary reload via
aarch64_sve_reload_be for memory and pseudo registers, but failed
to do the same for subregs of pseudo registers.  To avoid this and
any similar problems, the patch instead tests for things that the move
patterns handle directly; if the operand isn't one of those, we should
use the reload pattern instead.

The patch fixes an ICE in sve/mask_struct_store_3.c for aarch64_be,
where the bogus target description was (rightly) causing LRA to cycle.

2018-02-01  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
PR tearget/83845
* config/aarch64/aarch64.c (aarch64_secondary_reload): Tighten
check for operands that need to go through aarch64_sve_reload_be.

Reviewed-by: James Greenhalgh <james.greenhalgh@arm.com>
From-SVN: r257285

re PR tree-optimization/81661 (ICE in gimplify_modify_expr, at gimplify.c:5638)

PR tree-optimization/81661
PR tree-optimization/84117
* tree-eh.h (rewrite_to_non_trapping_overflow): Declare.
* tree-eh.c: Include gimplify.h.
(find_trapping_overflow, replace_trapping_overflow,
rewrite_to_non_trapping_overflow): New functions.
* tree-vect-loop.c: Include tree-eh.h.
(vect_get_loop_niters): Use rewrite_to_non_trapping_overflow.
* tree-data-ref.c: Include tree-eh.h.
(get_segment_min_max): Use rewrite_to_non_trapping_overflow.

* gcc.dg/pr81661.c: New test.
* gfortran.dg/pr84117.f90: New test.

From-SVN: r257284

PR 83705 Repeat with large values

This patch fixes the regression by increasing the limit where we fall
back to runtime to 2**28 elements, which is the same limit where
previous releases failed. The are still bugs in the runtime
evaluation, so in many cases longer characters will still fail, so
print a warning message.

Regtested on x86_64-pc-linux-gnu.

gcc/fortran/ChangeLog:

2018-02-01  Janne Blomqvist  <jb@gcc.gnu.org>

PR fortran/83705
* simplify.c (gfc_simplify_repeat): Increase limit for deferring
to runtime, print a warning message.

gcc/testsuite/ChangeLog:

2018-02-01  Janne Blomqvist  <jb@gcc.gnu.org>

PR fortran/83705
* gfortran.dg/repeat_7.f90: Catch warning message.

From-SVN: r257281

compiler: check for nil receiver in value method

    We already dereference the pointer to copy the value, but if the
    method does not use the value then the pointer dereference may be
    optimized away.  Do an explicit nil check so that we get the panic
    that is required.

    Fixes golang/go#19806

    Reviewed-on: https://go-review.googlesource.com/91275

* go.go-torture/execute/printnil.go: New test.

From-SVN: r257280

Daily bump.

From-SVN: r257279

elf.c (elf_add): Close descriptor if we use a debugfile.

* elf.c (elf_add): Close descriptor if we use a debugfile.
* btest.c (check_open_files): New static function.
(main): Call check_open_files.

From-SVN: r257275

Update gcc .po files.

* be.po, da.po, de.po, el.po, es.po, fi.po, fr.po, hr.po, id.po,
ja.po, nl.po, ru.po, sr.po, sv.po, tr.po, uk.po, vi.po, zh_CN.po,
zh_TW.po: Update.

From-SVN: r257274

Update cpplib .po files.

* be.po, ca.po, da.po, de.po, el.po, eo.po, es.po, fi.po, fr.po,
id.po, ja.po, nl.po, pr_BR.po, ru.po, sr.po, sv.po, tr.po, uk.po,
vi.po, zh_CN.po, zh_TW.po: Update.

From-SVN: r257273

Fix comdat_group check with Solaris as

* lib/target-supports.exp (check_effective_target_comdat_group):
Allow for Solaris as comdat syntax.

* g++.dg/debug/dwarf2/nested-4.C: Xfail scan-assembler-times on
Solaris with comdat_group support and as.

From-SVN: r257272

re PR c/81779 (bool define from stdbool.h suppresses -Wdeclaration-after-statement)

PR c/81779
* c-parser.c (c_parser_compound_statement_nostart): Call
expansion_point_location_if_in_system_header.

* gcc.dg/pr81779.c: New test.

From-SVN: r257271

re PR rtl-optimization/84123 (internal compiler error: in gen_rtx_SUBREG, at emit-rtl.c:908, alpha linux.)

PR rtl-optimization/84123
* combine.c (change_zero_ext): Check if hard register satisfies
can_change_dest_mode before calling gen_lowpart_SUBREG.

From-SVN: r257270

re PR fortran/84116 (ICE in gfc_match_omp_clauses, at fortran/openmp.c:1354)

PR fortran/84116
* openmp.c (gfc_match_omp_clauses): If all the linear
gfc_match_omp_variable_list calls failed, don't gfc_free_omp_namelist
nor set *head = NULL.  Formatting fixes.

* gfortran.dg/gomp/pr84116.f90: New test.

From-SVN: r257266

re PR c++/83993 (ICE: constant not recomputed when ADDR_EXPR changed)

PR c++/83993
* constexpr.c (cxx_eval_outermost_constant_expr): Build NOP_EXPR
around non-constant ADDR_EXPRs rather than clearing TREE_CONSTANT
on ADDR_EXPR.

* g++.dg/init/pr83993-2.C: New test.

From-SVN: r257265

re PR c++/83993 (ICE: constant not recomputed when ADDR_EXPR changed)

PR c++/83993
* constexpr.c (diag_array_subscript): Emit different diagnostics
if TYPE_DOMAIN (arraytype) is NULL.
(cxx_eval_array_reference, cxx_eval_store_expression): For arrays
with NULL TYPE_DOMAIN use size_zero_node as nelts.

* g++.dg/init/pr83993-1.C: New test.
* g++.dg/cpp0x/pr83993.C: New test.

From-SVN: r257264

re PR fortran/84088 ([nvptx] libgomp.oacc-fortran/declare-*.f90 execution fails)

2018-01-31  Paul Thomas  <pault@gcc.gnu.org>

PR fortran/84088
* trans-expr.c (gfc_conv_procedure_call): If the parm expr is
an address expression passed to an assumed rank dummy, convert
to an indirect reference.

2018-01-31  Paul Thomas  <pault@gcc.gnu.org>

PR fortran/84088
* gfortran.dg/pr84088.f90 : New test.

From-SVN: r257262