This series of patches fix PR61441. This patch avoids various transformations
with signaling NaN operands when flag_signaling_nans is on, to avoid folding
which would lose exceptions.

Bootstrapped & regression-tested on x86_64-linux-gnu.

gcc/
* fold-const.c (const_binop): Convert sNaN to qNaN when
flag_signaling_nans is off.
(const_unop): Avoid the operation, other than NEGATE and
ABS, if flag_signaling_nans is on and the operand is an sNaN.
(fold_convert_const_real_from_real): Avoid the operation if
flag_signaling_nans is on and the operand is an sNaN.
(integer_valued_real_unary_p): Update comment stating it
returns false for sNaN values.
(integer_valued_real_binary_p, integer_valued_real_call_p): Same.
(integer_valued_real_single_p): Same.
(integer_valued_real_invalid_p, integer_valued_real_p): Same.
* fold-const-call.c (fold_const_pow): Avoid the operation
if flag_signaling_nans is on and the operand is an sNaN.
(fold_const_builtin_load_exponent) Same.
(fold_const_call_sss): Same for CASE_CFN_POWI.
* gimple-fold.c (gimple_assign_integer_valued_real_p): Same.
(gimple_call_integer_valued_real_p): Same.
(gimple_phi_integer_valued_real_p): Same.
(gimple_stmt_integer_valued_real_p): Same.
* simplify-rtx.c (simplify_const_unary_operation): Avoid the
operation if flag_signaling_nans is on and the operand is an sNaN.
(simplify_const_binary_operation): Same.
* tree-ssa-math-opts.c (gimple_expand_builtin_pow): Avoid the
operation if flag_signaling_nans is on and the operand is an sNaN.

* gcc.dg/pr61441.c: New testcase.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231901 138bc75d-0d04-0410-961f-82ee72b054a4

Add inline to std::__invfwd

PR libstdc++/59768
* include/std/functional (__invfwd): Add inline specifier.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231900 138bc75d-0d04-0410-961f-82ee72b054a4

[combine] Check WORD_REGISTER_OPERATIONS normally rather than through preprocessor

* combine.c (simplify_comparison): Convert preprocessor check of
WORD_REGISTER_OPERATIONS into runtime check.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231899 138bc75d-0d04-0410-961f-82ee72b054a4

* gcc.dg/torture/pr68264.c: Tweak for Solaris.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231898 138bc75d-0d04-0410-961f-82ee72b054a4

PR debug/60756
* var-tracking.c (tracked_record_parameter_p): New predicate.
(track_expr_p): Invoke it.
(add_stores): Likewise.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231897 138bc75d-0d04-0410-961f-82ee72b054a4

* dbgcnt.def (dom_unreachable_edges): New debug counter.
* tree-ssa-dom.c: Include dbgcnt.h
(dom_opt_dom_walker::before_dom_children): Handle the new counter.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231896 138bc75d-0d04-0410-961f-82ee72b054a4

* go-gcc.cc (class Bvariable): Remove Gcc_tree parent class.  Add
t_ and orig_type_ fields.  Add new two parameter constructor.  Add
get_tree and get_decl methods.
(Gcc_backend::var_expression): Pass location to var get_tree.
(Gcc_backend::global_variable): Don't add VIEW_CONVERT_EXPR.  Use
two parameter constructor for Bvariable.
(Gcc_backend::global_variable_set_init): Don't remove
VIEW_CONVERT_EXPR.  Use var get_decl, not get_tree.
(Gcc_backend::write_global_definitions): Likewise.
(Gcc_backend::init_statement): Call var get_decl, not get_tree.
(Gcc_backend::block): Likewise.
(Gcc_backend::implicit_variable_set_init): Likewise.
(Gcc_backend::immutable_struct_set_init): Likewise.
(Gcc_backend::function_set_parameters): Likewise.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231894 138bc75d-0d04-0410-961f-82ee72b054a4

Daily bump.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231892 138bc75d-0d04-0410-961f-82ee72b054a4

* go-gcc.cc (Gcc_backend::global_variable): If type is zero-sized,
add a VIEW_CONVERT_EXPR to the tree.
(Gcc_backend::global_variable_set_init): Remove any
VIEW_CONVERT_EXPR.
(Gcc_backend::write_global_definitions): Likewise.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231888 138bc75d-0d04-0410-961f-82ee72b054a4

2015-12-21  Andrew Pinski <apinski@cavium.com>

        * config/aarch64/aarch64-option-extensions.def (LSE): Change
        FEAT_STRING to "atomics".

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231887 138bc75d-0d04-0410-961f-82ee72b054a4

C and C++ FE: fix source ranges for binary ops

gcc/c-family/ChangeLog:
* c-common.c (binary_op_error): Convert first param from
location_t to rich_location * and use it when emitting an error.
* c-common.h (binary_op_error): Convert first param from
location_t to rich_location *.

gcc/c/ChangeLog:
* c-typeck.c: Include "gcc-rich-location.h".
(build_binary_op): In the two places that call binary_op_error,
create a gcc_rich_location and populate it with the location of
the binary op and its two operands.

gcc/cp/ChangeLog:
* typeck.c (cp_build_binary_op): Update for change in signature
of build_binary_op.  Use error_at to replace an implicit use
of input_location with param "location" in "invalid operands"
error.
(cp_build_binary_op): Replace an error with an error_at, using
"location", rather than implicitly using input_location.

gcc/testsuite/ChangeLog:
* g++.dg/diagnostic/bad-binary-ops.C: New test case.
* gcc.dg/bad-binary-ops.c: New test case.
gcc.dg/plugin/diagnostic_plugin_show_trees.c (get_range_for_expr):
Remove material copied from gcc-rich-location.c
(gcc_rich_location::add_expr): Likewise.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231884 138bc75d-0d04-0410-961f-82ee72b054a4

DWARF: allow dynamic data member offsets for inheritance info

An unintended effect of the recently introduced machinery to handle
dynamic data member offsets in variable-length records (when
-fgnat-encodings=minimal) prevented GCC from describing correctly
inheritance information for classes in C++, which is a regression.

This change rectifies this machinery in this case.

gcc/ChangeLog:

* dwarf2out.c (add_data_member_location_attribute): Do not
disable dynamic data member offsets descriptions for TREE_BINFO
members.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231883 138bc75d-0d04-0410-961f-82ee72b054a4

PR tree-optimization/65337
* tree-ssa-pre.c (eliminate): Also clean up abnormal edges if need be.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231882 138bc75d-0d04-0410-961f-82ee72b054a4

Rename test file that had incorrect bug number

PR libstdc++/68982
testsuite/20_util/function_objects/mem_fn/68276.cc: Rename to ...
testsuite/20_util/function_objects/mem_fn/68982.cc: Correct bug number.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231881 138bc75d-0d04-0410-961f-82ee72b054a4

libstdc++/68995 qualify calls to __callable_functor

PR libstdc++/68995
* include/std/functional (_function_handler, function): Qualify
__callable_functor.
* testsuite/20_util/function/68995.cc: New.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231880 138bc75d-0d04-0410-961f-82ee72b054a4

libstdc++/68276 consistently qualify std::forward

PR libstdc++/68276
* include/std/functional (__invoke_impl, _Mem_fn::operator()): Qualify
std::forward.
testsuite/20_util/function_objects/mem_fn/68276.cc: New.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231879 138bc75d-0d04-0410-961f-82ee72b054a4

Fix typo

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231877 138bc75d-0d04-0410-961f-82ee72b054a4

S/390: Fix base reg condition.

2015-12-21  Dominik Vogt  <vogt@linux.vnet.ibm.com>

* config/s390/s390.c (s390_emit_prologue): Fix base reg condition.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231876 138bc75d-0d04-0410-961f-82ee72b054a4

PR libstdc++/66693.

* include/std/tuple (tuple_element, tuple_size, tuple_element_t,
__tuple_element_t): Move to...
* include/std/utility: ...here.
* testsuite/20_util/pair/astuple/astuple.cc: Adjust.
* testsuite/20_util/pair/astuple/astuple_cpp14.cc: New.
* testsuite/20_util/tuple/tuple_element.cc: Adjust.
* testsuite/20_util/tuple/tuple_element_t.cc: Likewise.
* testsuite/20_util/tuple/tuple_size.cc: Likewise.
* testsuite/23_containers/array/tuple_interface/tuple_element.cc:
Likewise.
* testsuite/23_containers/array/tuple_interface/tuple_element_cpp14.cc:
New.
* testsuite/23_containers/array/tuple_interface/tuple_size.cc: Adjust.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231875 138bc75d-0d04-0410-961f-82ee72b054a4

[ARC] Add and refurbish the builtins related functions.

gcc/
2015-12-21  Claudiu Zissulescu  <claziss@synopsys.com>

* config/arc/builtins.def: New file.
* config/arc/arc.c (arc_init_simd_builtins): Remove.
(arc_builtins): Likewise.
(TARGET_BUILTIN_DECL): Define.
(arc_builtin_id): New enum.
(arc_builtin_description): New structure.
(arc_bdesc): New variable.
(arc_tolower): New function.
(def_mbuiltin): Remove.
(arc_builtin_decl): New function.
(arc_expand_builtin_aligned ): Likewise.
(apply_GEN_FCN): Likewise.
(arc_init_builtins): Refurbish.
(arc_expand_builtin): Likewise.
(simd_insn_args_type): Remove.
(builtin_description): Likewise
(arc_simd_builtin_desc_list): Likewise.
(arc_expand_simd_builtin): Likewise.
(arc_process_double_reg_moves): Use the new builtin name format.
* config/arc/arc.md (unspec): New builtin function UNSPEC codes.
(vunspec): New builtin function VUNSPEC codes.
(UNSPEC_SWAP, UNSPEC_MUL64, UNSPEC_MULU64, UNSPEC_DIVAW)
(UNSPEC_DIRECT, UNSPEC_LP, UNSPEC_CASESI, VUNSPEC_RTIE)
(VUNSPEC_SYNC, VUNSPEC_BRK, VUNSPEC_FLAG, VUNSPEC_SLEEP)
(VUNSPEC_SWI, VUNSPEC_CORE_READ, VUNSPEC_CORE_WRITE, VUNSPEC_LR)
(VUNSPEC_SR, VUNSPEC_TRAP_S, VUNSPEC_UNIMP_S, VUNSPEC_NOP)
(UNSPEC_ARC_MEMBAR,VUNSPEC_ARC_CAS, VUNSPEC_ARC_LL)
(VUNSPEC_ARC_SC, VUNSPEC_ARC_EX, VUNSPEC_DEXCL)
(VUNSPEC_DEXCL_NORES, VUNSPEC_LR_HIGH): Remove.
(mul64, mulu64): Remove patterns.
(store_direct, *movdf_insn_nolrsr, casesi, casesi_load)
(casesi_compact_jump, nopv, swap, divaw, flag, brk, rtie, sync)
(swi, sleep, core_read, core_write, lr, sr, trap_s, unimp_s)
(doloop_begin_i): Use new builtin function code naming.
(kflag, clri, ffs, ffs_f, ffssi2, fls, seti): New patterns.
* config/arc/builtins.def: New file.
* config/arc/fpx.md: Use new builtin function code naming.
* config/arc/simdext.md: New SIMD builtin function UNSPEC
codes. Use them in the SIMD patterns.

gcc/testsuite
2015-12-21  Claudiu Zissulescu  <claziss@synopsys.com>

* gcc.target/arc/builtin_general.c: New test.
* gcc.target/arc/builtin_simd.c: Likewise.
* gcc.target/arc/builtin_special.c: Likewise.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231874 138bc75d-0d04-0410-961f-82ee72b054a4

PR 66827
* regex.c (EXTRACT_NUMBER): Cast sign byte to unsigned before left
shifting.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231873 138bc75d-0d04-0410-961f-82ee72b054a4

This series of patches fix PR61441. This patch makes resulting NaN values
to be quiet NaN for real value operations, irrespective of the flag_signaling_nans
flag. The caller has the responsibility to avoid the operation if flag_signaling_nans
is on.

gcc/
* real.c (do_add): Make resulting NaN value to be qNaN.
(do_multiply, do_divide, do_fix_trunc): Same.
(real_arithmetic, real_ldexp, real_convert): Same.
(real_isinteger): Updated comment stating it returns false for sNaN.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231872 138bc75d-0d04-0410-961f-82ee72b054a4

PR tree-optimization/64910
* config/i386/i386.md (testqi_ext_3): Allow HImode.

PR tree-optimization/64910
* gcc.target/i386/bittest.c: New test.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231871 138bc75d-0d04-0410-961f-82ee72b054a4

PR c++/67411
* decl2.c (decl_maybe_constant_var_p): Use DECL_HAS_VALUE_EXPR_P.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231869 138bc75d-0d04-0410-961f-82ee72b054a4

Daily bump.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231867 138bc75d-0d04-0410-961f-82ee72b054a4

2015-12-20  Andrew Pinsi  <apinski@cavium.com>

        * config/aarch64/atomics.md
        (aarch64_atomic_<atomic_optab>_fetch<mode>_lse): Add early clobber
        to the scratch register.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231864 138bc75d-0d04-0410-961f-82ee72b054a4

PR c++/67411

* lambda.c (generic_lambda_fn_p): Split out from...
(maybe_add_lambda_conv_op): ...here.
* semantics.c (process_outer_var_ref): Don't defer maybe-constant
variables in a generic lambda.
* pt.c (instantiate_non_dependent_or_null): New.
* init.c (constant_value_1): Use it.
* cp-tree.h: Declare it and generic_lambda_fn_p.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231863 138bc75d-0d04-0410-961f-82ee72b054a4

PR c++/67411

* decl2.c (decl_maybe_constant_var_p): A proxy isn't constant.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231862 138bc75d-0d04-0410-961f-82ee72b054a4

* gcc-interface/utils2.c (gnat_rewrite_reference) <REALPART_EXPR>: New
case identical to FLOAT_EXPR.
<IMAGPART_EXPR>: Likewise.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231861 138bc75d-0d04-0410-961f-82ee72b054a4

* gcc-interface/decl.c (gnat_to_gnu_entity) <E_Record_Type>: During
layout in type_annotate_only mode, skip discriminants of derived
tagged types renaming those of the parent type.
In type_annotate_only mode, if the type is tagged, do not override a
size clause but take into account the alignment of the tag.
(annotate_rep): In type_annotate_only mode, deal with  discriminants
of derived tagged types renaming those of the parent type.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231860 138bc75d-0d04-0410-961f-82ee72b054a4

* gcc-interface/utils.c (maybe_pad_type): In type_annotate_only mode,
retrieve the component type if this is an array and do not issue the
warning for concurrent types.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231859 138bc75d-0d04-0410-961f-82ee72b054a4

This series of patches fix PR61441. This patch removes flag_errno_math check
for RINT, treating it similar to nearbyint.

Bootstrapped & regression-tested on x86_64-linux-gnu.

gcc/
* match.pd (f(x) -> x): Removed flag_errno_math check for RINT.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231858 138bc75d-0d04-0410-961f-82ee72b054a4

This series of patches are for fixing PR61441. This patch modifies code to use
REAL_VALUE_ISSIGNALING_NAN instead of REAL_VALUE_ISNAN to avoid the operatins
only for sNaN operands.

Bootstrapped & regression-tested on x86_64-linux-gnu.

gcc/
* fold-const.c (const_binop): Use REAL_VALUE_ISSIGNALING_NAN instead
of REAL_VALUE_ISNAN to avoid the operation for sNaN operands.
* simplify-rtx.c (simplify_const_binary_operation): Same.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231857 138bc75d-0d04-0410-961f-82ee72b054a4

PR middle-end/65337
* tree-ssa-dce.c (bb_postorder): New static var.
(forward_edge_to_pdom): Remove.
(remove_dead_stmt): Instead of redirecting edges only keep an edge
on a path to nearest live BB.
(eliminate_unnecessary_stmts): Free bb_postorder.
* cfganal.c (dfs_find_deadend): Add START_POINTES.
* cfganal.h (inverted_post_order_compute): Update prototype.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231856 138bc75d-0d04-0410-961f-82ee72b054a4

Daily bump.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231855 138bc75d-0d04-0410-961f-82ee72b054a4

PR rtl-optimization/68910
* emit-rtl.c (set_unique_reg_note) <>REG_EQUAL>: Add bypass for USEs.
* config/sparc/sparc.md (anddi3): Enable only in 64-bit mode.
(iordi3): Likewise.
(xordi3): Likewise.
(one_cmpldi2): Likewise.
(*anddi3_sp32): Delete.
(*and_not_di_sp32): Likewise.
(*iordi3_sp32): Likewise.
(*or_not_di_sp32): Likewise.
(*xordi3_sp32): Likewise.
(*xor_not_di_sp32): Likewise.
(32-bit DImode logical operations splitter): Likewise.
(*one_cmpldi2_sp32): Likewise.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231851 138bc75d-0d04-0410-961f-82ee72b054a4

2015-12-19  Andrew Burgess  <andrew.burgess@embecosm.com>

        * config/arc/arc.md (*storeqi_update): Use 'memory_operand' and
        fix RTL pattern to include the plus.
        (*storehi_update): Likewise.
        (*storesi_update): Likewise.
        (*storesf_update): Likewise.
        * config/arc/predicates.md (store_update_operand): Delete.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231850 138bc75d-0d04-0410-961f-82ee72b054a4

gcc:

        2015-12-19  Andrew Burgess  <andrew.burgess@embecosm.com>

        * config/arc/arc.md (*loadqi_update): Use new 'any_mem_operand'
        and fix RTL pattern to include the plus.
        (*load_zeroextendqisi_update): Likewise.
        (*load_signextendqisi_update): Likewise.
        (*loadhi_update): Likewise.
        (*load_zeroextendhisi_update): Likewise.
        (*load_signextendhisi_update): Likewise.
        (*loadsi_update): Likewise.
        (*loadsf_update): Likewise.
        * config/arc/predicates.md (load_update_operand): Delete.
        (any_mem_operand): New predicate.

gcc/testsuite:

        2015-12-19  Andrew Burgess  <andrew.burgess@embecosm.com>

        * gcc.target/arc/load-update.c: New file.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231849 138bc75d-0d04-0410-961f-82ee72b054a4

This series of patches fix PR61441. This patch adds REAL_VALUE_ISSIGNALING_NAN.

Bootstrapped & regression-tested on x86_64-linux-gnu.

gcc/
* real.c (real_issignaling_nan): New.
* real.h (real_issignaling_nan, REAL_VALUE_ISSIGNALING_NAN): New.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231848 138bc75d-0d04-0410-961f-82ee72b054a4

PR target/68729
* config/pa/pa.c (pa_emit_move_sequence): Reorganize handling of
floating-point reloads. Only reload operands that are not valid
floating-point memory operands.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231845 138bc75d-0d04-0410-961f-82ee72b054a4

Daily bump.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231844 138bc75d-0d04-0410-961f-82ee72b054a4

Fix PR c++/68978 (bogus error: lvalue required as left operand of assignment)

gcc/cp/ChangeLog:

PR c++/68978
* tree.c (lvalue_kind) [MODOP_EXPR]: New case.

gcc/testsuite/ChangeLog:

PR c++/68978
* g++.dg/template/pr68978.C: New test.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231841 138bc75d-0d04-0410-961f-82ee72b054a4

PR debug/68860
* ipa-split.c (split_function): Only perform caller side
modifications for decl_debug_args here.
* cgraph.c: Include gimplify.h.
(cgraph_edge::redirect_call_stmt_to_callee): Add caller side
debug stmts for decl_debug_args.  Spelling fix in a comment.
* tree-inline.c (tree_function_versioning): Populate decl_debug_args
for args_to_skip arguments and add callee side debug stmts.
Formatting fixes.  Avoid shadowing i variable.

* gcc.dg/guality/pr68860-1.c: New test.
* gcc.dg/guality/pr68860-2.c: New test.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231840 138bc75d-0d04-0410-961f-82ee72b054a4

2015-12-18  Ville Voutilainen  <ville.voutilainen@gmail.com>

Fix a regression introduced by the fix of libstdc++/68276.
* src/c++11/ios.cc (_M_grow_words): Catch bad_alloc again so that
bad_array_new_length is handled properly.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231839 138bc75d-0d04-0410-961f-82ee72b054a4

* lib/target-supports.exp (check_effective_target_cilkplus): Not nvptx.
* c-c++-common/attr-simd-3.c: Require cilkplus.
* gcc.dg/graphite/id-28.c: Likewise.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231838 138bc75d-0d04-0410-961f-82ee72b054a4

* config/nvptx/nvptx.c (nvptx_maybe_convert_symbolic_operand):
Remove UNSPEC_TO_GENERIC generation.
(nvptx_output_mov_insn): Generate cvta for symbolic src.
* config/nvptx/nvptx.md (nvptx_register_operand): Allow hard reg.
(nvptx_reg_or_mem_operand): Likewise.
(nvptx_nonmemory_operand): Likewise.
(nvptx_general_operand): Delete.
(*mov<mode>_insn): Use nonimmediate_operand, permit hardregs.
(oacc_fork, oacc_join): Use general_operand.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231837 138bc75d-0d04-0410-961f-82ee72b054a4

Ignore -fdebug-prefix-map in producer string (by Daniel Kahn Gillmor)

* dwarf2out.c (gen_producer_string): Ignore -fdebug-prefix-map.

testsuite/
* gcc.dg/debug/dwarf2/prod-options.c: New test.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231835 138bc75d-0d04-0410-961f-82ee72b054a4

* gnat.dg/specs/debug1.ads: Bump final count to 18.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231825 138bc75d-0d04-0410-961f-82ee72b054a4

/cp
2015-12-18  Paolo Carlini  <paolo.carlini@oracle.com>

PR c++/67592
* decl.c (grokdeclarator): Reject constexpr virtual member functions;
in error messages, prefer %<virtual%> and %<constexpr%> to virtual
and constexpr, respectively.

/testsuite
2015-12-18  Paolo Carlini  <paolo.carlini@oracle.com>

PR c++/67592
* g++.dg/cpp0x/constexpr-virtual5.C: New.
* g++.dg/cpp0x/pr51463.C: Adjust dg-error string.
* g++.dg/inherit/pure1.C: Likewise.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231824 138bc75d-0d04-0410-961f-82ee72b054a4

* gcc-interface/ada-tree.h (TYPE_DEBUG_TYPE): Remove duplicate.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231823 138bc75d-0d04-0410-961f-82ee72b054a4

* config/nvptx/nvptx.c (nvptx_option_override): Emit sorry for
stabs debug.
(nvptx_assemble_undefined_decl): Use nvptx_assemble_decl_end.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231822 138bc75d-0d04-0410-961f-82ee72b054a4

[PATCH] [PR rtl-optimization/49847] Fix ICE in CSE due to cc0-setter and cc0-user in different blocks

PR rtl-optimization/49847
* cse.c (record_jump_equiv): Handle fold_rtx returning NULL_RTX.

PR rtl-optimization/49847
* g++.dg/pr49847-2.C: New test.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231821 138bc75d-0d04-0410-961f-82ee72b054a4

Compile gcc.dg/vect/pr68305.c with -mavx2 for x86 target

Since gcc.dg/vect/pr68305.c is a compile test, we should add -mavx2 for
x86 target.

* gcc.dg/vect/pr68305.c (dg-additional-options): Add -mavx2
for x86 target.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231820 138bc75d-0d04-0410-961f-82ee72b054a4

2015-12-18  Ville Voutilainen  <ville.voutilainen@gmail.com>

PR libstdc++/68276

* src/c++11/ios.cc (_M_grow_words): Use nothrow new.
* testsuite/27_io/ios_base/storage/11584.cc: Adjust.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231819 138bc75d-0d04-0410-961f-82ee72b054a4

* config/nvptx/nvptx.c (worker_bcast_name, worker_red_name): Delete.
(nvptx_option_override): Adjust worker symbol creation.
(nvptx_gen_wcast): Wrap worker address in UNSPEC_TO_GENERIC.
(write_worker_buffer): New.
(nvptx_file_end): Call write_worker_buffer.
* config/nvptx/nvptx.md (UNSPEC_SHARED_DATA): Delete.
(worker_load<mode>, worker_store<mode>): Delete.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231818 138bc75d-0d04-0410-961f-82ee72b054a4

* c-c++-common/attr-simd-3.c: Requires pthreads.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231816 138bc75d-0d04-0410-961f-82ee72b054a4

2015-12-18  Richard Biener  <rguenther@suse.de>

PR testsuite/68776
* tree-vect-patterns.c (struct vect_recog_func): New.
(vect_vect_recog_func_ptrs): Make an array of function name pairs.
(vect_pattern_recog_1): Print the recognized pattern name.  Return
true if a pattern was recognized.
(vect_pattern_recog): Adjust.  Stop iterating over pattern recognition
functions on a stmt if a pattern was recognized.

* gcc.dg/vect/vect-widen-mult-const-s16.c: Adjust.
* gcc.dg/vect/vect-widen-mult-const-u16.c: Likewise.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231815 138bc75d-0d04-0410-961f-82ee72b054a4

IRA: Fix % constraint modifier handling on disabled alternatives.

gcc/ChangeLog:

2015-12-18  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

* ira.c (ira_setup_alts): Move the scan for commutative modifier
to the first loop to make it work even with disabled alternatives.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231814 138bc75d-0d04-0410-961f-82ee72b054a4

S/390: Allow to use r2 to r4 as literal pool base.

gcc/ChangeLog

* config/s390/s390.c (s390_init_frame_layout): Try r4 to r2 for the
literal pool pointer.

gcc/testsuite/ChangeLog

* gcc.target/s390/litpool-r3-1.c: New test.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231813 138bc75d-0d04-0410-961f-82ee72b054a4

gcc/

2015-12-18  Yuri Rumyantsev  <ysrumyan@gmail.com>

PR tree-optimization/68906
* tree-ssa-loop-unswitch.c (tree_unswitch_outer_loop): Add check
that an exit block belongs to LOOP.

gcc/testsuite/

2015-12-18  Yuri Rumyantsev  <ysrumyan@gmail.com>

PR tree-optimization/68906
* gcc.dg/torture/pr68906.c: New test.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231812 138bc75d-0d04-0410-961f-82ee72b054a4

gcc/

PR tree-optimization/68956
* tree-vect-stmts.c (vect_init_vector): Fix constants
used for boolean vectors.

gcc/testsuite

PR tree-optimization/68956
* gcc.target/i386/pr68956.c: New test.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231811 138bc75d-0d04-0410-961f-82ee72b054a4

[AArch64] PR rtl-optimization/68796 Add compare-of-zero_extract pattern

PR rtl-optimization/68796
* config/aarch64/aarch64.md (*and<mode>3nr_compare0_zextract):
New pattern.
* config/aarch64/aarch64.c (aarch64_select_cc_mode): Handle
ZERO_EXTRACT comparison with zero.
(aarch64_mask_from_zextract_ops): New function.
* config/aarch64/aarch64-protos.h (aarch64_mask_from_zextract_ops):
New prototype.

* gcc.target/aarch64/tst_3.c: New test.
* gcc.target/aarch64/tst_4.c: Likewise.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231810 138bc75d-0d04-0410-961f-82ee72b054a4

S/390: Turn constm1_operand into all_ones_operand

gcc/ChangeLog:

2015-12-18 Robin Dapp <rdapp@linux.vnet.ibm.com>

* config/s390/predicates.md: Change and rename
constm1_operand to all_ones_operand
* config/s390/s390.c (s390_expand_vcond): Use all_ones_operand
* config/s390/vector.md: Likewise

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231809 138bc75d-0d04-0410-961f-82ee72b054a4

S/390: Simplify vector conditionals

gcc/ChangeLog:

2015-12-18  Robin Dapp  <rdapp@linux.vnet.ibm.com>

* config/s390/s390.c (s390_expand_vcond): Convert vector
conditional into shift.
* config/s390/vector.md: Change operand predicate.

gcc/testsuite/ChangeLog:

2015-12-18  Robin Dapp  <rdapp@linux.vnet.ibm.com>

* gcc.target/s390/vcond-shift.c: New test to check vcond
simplification.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231808 138bc75d-0d04-0410-961f-82ee72b054a4

2015-12-18  Paul Thomas  <pault@gcc.gnu.org>

PR fortran/68196
*expr.c (gfc_has_default_initializer): Prevent infinite recursion
through this function for procedure pointer components.
* trans-array.c (structure_alloc_comps): Ditto twice.

2015-12-18  Paul Thomas  <pault@gcc.gnu.org>

PR fortran/68196
* gfortran.dg/proc_ptr_48.f90: New test.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231807 138bc75d-0d04-0410-961f-82ee72b054a4

S/390: Deprecate g5 and g6 CPU levels

gcc/ChangeLog:

2015-12-18  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

* config/s390/driver-native.c (s390_host_detect_local_cpu): Pick
z900 -march -mtune even on g5 and g6 machines.
* config/s390/s390.c (s390_option_override_internal): New argument
to distingiush between options and target attributes.  Emit
deprecation warning for g5 and g6 arch/tune options.
(s390_option_override): Set new s390_option_override_internal
argument to true.
(s390_valid_target_attribute_tree): Set new
s390_option_override_internal argument to false.
* config/s390/s390.h: Default to z900 in the driver.
* doc/invoke.texi: Document the deprecation of g5 and g6.

gcc/testsuite/ChangeLog:

2015-12-18  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

* gcc.target/s390/hotpatch-8.c: Add -Wno-deprecated to options.
* gcc.target/s390/hotpatch-9.c: Likewise.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231806 138bc75d-0d04-0410-961f-82ee72b054a4

Add myself to MAINTAINERS (Write After Approval)

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231805 138bc75d-0d04-0410-961f-82ee72b054a4

Update typedefs for integer types in config/i386/djgpp-stdint.h

* config/i386/djgpp-stdint.h: update typedefs for integer types

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231804 138bc75d-0d04-0410-961f-82ee72b054a4

Add *-*-msdosdjgpp to lists of i[34567]86-*-* soft-fp targets

* config.host: Add *-*-msdosdjgpp to lists of i[34567]86-*-*
soft-fp targets

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231803 138bc75d-0d04-0410-961f-82ee72b054a4

Specify that DJGPP do not have mmap even when sys/mman.h exists

* configure.ac: Specify that DJGPP do not have mmap even when sys/mman.h exists
* configure: Regenerate

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231802 138bc75d-0d04-0410-961f-82ee72b054a4

[DJGPP] Update config/os/djgpp/error_constants.h

       * config/os/djgpp/error_constants.h: update according to DJGPP errno
       macros.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231801 138bc75d-0d04-0410-961f-82ee72b054a4

[PATCH] Move split-path pass next to the tracer pass

* passes.def: Put the split-paths pass immediately before the
tracer pass.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231800 138bc75d-0d04-0410-961f-82ee72b054a4

Fix PR c++/68831 (superfluous -Waddress warning for C++ delete)

gcc/cp/ChangeLog:

PR c++/68831
* init.c (build_delete): Use a warning sentinel to disable
-Waddress warnings when building the conditional that tests
if the operand is NULL.

gcc/testsuite/ChangeLog:

PR c++/68831
* g++.dg/pr68831.C: New test.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231798 138bc75d-0d04-0410-961f-82ee72b054a4

syscall: Add definition for NLA_HDRLEN

    This change updates mksysinfo.sh so it correctly
    includes the define NLA_HDRLEN in the syscall package.

    Fixes golang/go/#13629

    Reviewed-on: https://go-review.googlesource.com/17893

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231796 138bc75d-0d04-0410-961f-82ee72b054a4

Mark recently obsoleted targets (openbsd3 and knetbsd)

2015-12-17  Jan-Benedict Glaw  <jbglaw@lug-owl.de>

* config-list.mk (LIST): Add --enable-obsolete to recently obsoleted
targets x86_64-knetbsd-gnu, i686-knetbsd-gnu and i686-openbsd3.0 .

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231794 138bc75d-0d04-0410-961f-82ee72b054a4

Daily bump.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231793 138bc75d-0d04-0410-961f-82ee72b054a4

[PATCH] Limit path splitting to loops we optimize for speed

* doc/invoke.texi (-O2 options): Remove -fsplit-paths.
(-O3 options): Add -fsplit-paths.
* gimple-ssa-split-paths.c: Include predict.h
(split_paths): Only split paths in a loop that should be
optimized for speed.
* opts.c (default_options_table): Move -fsplit-paths from -O2 to
-O3.

* gcc.dg/tree-ssa/split-path-1.c: Explicitly ask for path
splitting optimizations.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231790 138bc75d-0d04-0410-961f-82ee72b054a4

gcc/
* ipa-icf.c (sem_item_optimizer::merge): Don't pick 'main' as the
source function.

gcc/testsuite/
* gcc.dg/ipa/ipa-icf-merge-1.c: New.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231787 138bc75d-0d04-0410-961f-82ee72b054a4

C FE: improvements to ranges of bad return values

gcc/c/ChangeLog:
* c-parser.c (c_parser_statement_after_labels): When calling
c_finish_return, Use the return expression's location if it has
one, falling back to the location of the first token within it.
* c-typeck.c (c_finish_return): When issuing warnings about
the incorrect presence/absence of a return value, issue a note
showing the declaration of the function.

gcc/testsuite/ChangeLog:
* gcc.dg/diagnostic-range-bad-return.c: New test case.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231786 138bc75d-0d04-0410-961f-82ee72b054a4

replace ISL with isl

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231784 138bc75d-0d04-0410-961f-82ee72b054a4

move all isl include files to graphite.h

* graphite-dependences.c: Move all isl include files to...
* graphite-isl-ast-to-gimple.c: Same.
* graphite-optimize-isl.c: Same.
* graphite-poly.c: Same.
* graphite-scop-detection.c: Same.
* graphite.c: Same.
* graphite.h: ... here.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231783 138bc75d-0d04-0410-961f-82ee72b054a4

    * config/avr/avr.h (MOVE_MAX): Set value to 1.
        (MOVE_MAX_PIECES): Define.
        (MOVE_RATIO): Define.
        * config/avr/avr.c (TARGET_USE_BY_PIECES_INFRASTRUCTURE_P):
        Provide target hook.
        (avr_use_by_pieces_infrastructure_p): New function.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231782 138bc75d-0d04-0410-961f-82ee72b054a4

PR c++/67550

* init.c (constant_value_1): Don't return a CONSTRUCTOR missing
non-constant elements.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231777 138bc75d-0d04-0410-961f-82ee72b054a4

PR c++/67576

PR c++/25466
* rtti.c (build_typeid): Use save_expr, not stabilize_reference.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231776 138bc75d-0d04-0410-961f-82ee72b054a4

2015-12-17  Andris Pavenis  <andris.pavenis@iki.fi>

        * MAINTAINERS (Write After Approval): Add Myself.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231775 138bc75d-0d04-0410-961f-82ee72b054a4

obsolete the interix target

gcc/ChangeLog:

2015-12-17  Trevor Saunders  <tbsaunde+gcc@tbsaunde.org>

* config.gcc: mark *-interix* as obsolete.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231774 138bc75d-0d04-0410-961f-82ee72b054a4

obsolete openbsd 2.0 and 3.X

gcc/ChangeLog:

2015-12-17  Trevor Saunders  <tbsaunde+gcc@tbsaunde.org>

* config.gcc: Mark openbsd 2.0 and 3.X as obsolete.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231773 138bc75d-0d04-0410-961f-82ee72b054a4

mark *-knetbsd-* as obsolete

gcc/ChangeLog:

2015-12-17  Trevor Saunders  <tbsaunde+gcc@tbsaunde.org>

* config.gcc: Mark knetbsd targets as obsolete.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231772 138bc75d-0d04-0410-961f-82ee72b054a4

* config/nvptx/nvptx.h (NVPTX_RETURN_REGNUM, FRAME_POINTER_REGNUM,
ARG_POINTER_REGNUM, STATIC_CHAIN_REGNUM): Renumber.
(REGISTER_NAMES): Update and rename.
(FIXED_REGISTERS, CALL_USED_REGISTERS): Update.
(enum_reg_class, REG_CLASS_NAMES, REG_CLASS_CONTENTS): Reformat.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231771 138bc75d-0d04-0410-961f-82ee72b054a4

2015-12-17  Richard Biener  <rguenther@suse.de>

PR tree-optimization/68946
* tree-vect-slp.c (vect_slp_analyze_node_operations): Push
SLP def type to stmt operands one stmt at a time.

* gcc.dg/torture/pr68946.c: New testcase.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231770 138bc75d-0d04-0410-961f-82ee72b054a4

* c-c++-common/Wunused-var-13.c: Requires label values.
* gcc.dg/torture/pr46216.c: Likewise.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231769 138bc75d-0d04-0410-961f-82ee72b054a4

DWARF: describe properly Ada packed arrays

gcc/ada/ChangeLog:

* gcc-interface/ada-tree.h
(TYPE_IMPLEMENTS_PACKED_ARRAY_P, TYPE_CAN_HAVE_DEBUG_TYPE_P,
TYPE_ORIGINAL_PACKED_ARRAY, SET_TYPE_ORIGINAL_PACKED_ARRAY): New
macros.
* gcc-interface/decl.c (add_parallel_type_for_packed_array):
Rename to associate_original_type_to_packed_array.  When
-fgnat-encodings=minimal, set original packed array type as so
instead of as a parallel type to the implementation type.  In
this case, also rename the implementation type to the name of
the original array type.
(gnat_to_gnu_entity): Update invocations to
add_parallel_type_for_packed_array.  Tag ARRAY_TYPE nodes for
packed arrays with the TYPE_PACKED flag.
When -fgnat-encodings=minimal:
  - strip ___XP suffixes in packed arrays' names;
  - set the debug type for padding records around packed arrays
    to the packed array;
  - do not attach ___XUP types as parallel types of constrained
    array types.
* gcc-interface/misc.c (gnat_print_type): Update to handle
orignal packed arrays.
(gnat_get_debug_type): Update to reject packed arrays
implementation types.
(get_array_bit_stride): New.
(gnat_get_array_descr_info): Add packed arrays handling.
* gcc-interface/utils.c (maybe_pad_type): When
-fgnat-encodings=minimal, set the name of the padding type to
the one of the original packed type, if any.  Fix TYPE_DECL
peeling around the name of the input type.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231768 138bc75d-0d04-0410-961f-82ee72b054a4

DWARF: add a language hook for scalar biased types

Front-ends like GNAT for Ada sometimes use biased encodings for integral
types.  This change creates a new language hook so that the bias
information can make it into the debugging information back-end and
introduces an experimental DWARF attribute to hold it.

gcc/ada/ChangeLog:

* gcc-interface/misc.c (gnat_get_type_bias): New.
(LANG_HOOKS_GET_TYPE_BIAS): Redefine macro to implement the
get_type_bias language hook.

gcc/ChangeLog:

* langhooks.h (struct lang_hooks_for_types): New get_bias_field.
* langhooks-def.h (LANG_HOOKS_GET_TYPE_BIAS): New.
(LANG_HOOKS_FOR_TYPES_INITIALIZER): Initialize the
get_bias_field.
* dwarf2out.c
(base_type_die): In non-strict DWARF mode, invoke the
get_type_bias language hook for INTEGER_TYPE nodes.  If it
returns a bias, emit an attribute for it.
(subrange_type_die): Change signature to handle bias.  If
non-strict DWARF mode, emit an attribute for it, if one passed.
(modified_type_die): For subrange types, invoke the
get_type_bias langage hook and pass the bias to
subrange_type_die.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231767 138bc75d-0d04-0410-961f-82ee72b054a4

DWARF: create a macro for max dimensions for array descr. lang. hook

The array descriptor language hook can hold the description of a limited
number of array dimensions.  This macro will ease preventing overflow in
front-ends.

gcc/ada/ChangeLog:

* gcc-interface/misc.c (gnat_get_array_descr_info): When the
array has more dimensions than the language hook can handle,
fall back to a nested arrays description.  Handle context-less
array types.

gcc/ChangeLog:

* dwarf2out.h (DWARF2OUT_ARRAY_DESCR_INFO_MAX_DIMEN): New macro.
(struct array_descr_info): Use it for the dimensions array's
size.
* dwarf2out.c (gen_type_die_with_usage): Check that the array
descr. language hook does not return an array with more
dimensions that it should.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231766 138bc75d-0d04-0410-961f-82ee72b054a4

DWARF: describe Ada dynamic arrays as proper arrays

gcc/ada/ChangeLog:

* gcc-interface/decl.c (gnat_to_gnu_entity): When
-fgnat-encodings-minimal, do not add ___XUP/XUT suffixes to type
names and do not generate ___XA parallel types.
* gcc-interface/misc.c (gnat_get_array_descr_info): Match fat
and thin pointers and generate the corresponding array type
descriptions.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231765 138bc75d-0d04-0410-961f-82ee72b054a4

DWARF: add a language hook for fixed-point types

Support for fixed-point types in GCC is not powerful enough for Ada
fixed-point types: GNAT uses regular scalar types to implement them.
This new language hook makes it possible to output the desired debugging
information anyway.

gcc/ada/ChangeLog:

* gcc-interface/ada-tree.def (POWER_EXPR): New binary operation.
* gcc-interface/ada-tree.h (TYPE_FIXED_POINT_P): New macro.
(TYPE_IS_FIXED_POINT_P): New macro.
(TYPE_SCALE_FACTOR): New macro.
(SET_TYPE_SCALE_FACTOR): New macro.
* gcc-interface/decl.c: Include urealp.h
(gnat_to_gnu_entity): Attach trees to encode scale factors to
fixed-point types.
* gcc-interface/misc.c (gnat_print_type): Print scale factors
for fixed-point types.
(gnat_get_fixed_point_type_info): New.
(gnat_init_ts): Initialize data for the POWER_EXPR binary
operation.
(LANG_HOOKS_GET_FIXED_POINT_INFO): Redefine macro to implement
the get_fixed_point_type_info language hook.

gcc/ChangeLog:

* langhooks.h (struct lang_hooks_for_types): Add a
get_fixed_point_type_info field.
* langhooks-def.h (LANG_HOOKS_GET_FIXED_POINT_TYPE_INFO): New
macro.
(LANG_HOOKS_FOR_TYPES_INITIALIZER): Initialize the
get_fixed_point_type_info field.
* dwarf2out.h (enum fixed_point_scale_factor): New.
(struct fixed_point_type_info): New.
* dwarf2out.c (base_type_die): In DWARFv3 or non-strict DWARF
mode, get fixed-point type information using the debugging hook
and describe it in DWARF, if any.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231764 138bc75d-0d04-0410-961f-82ee72b054a4

DWARF: add a language hook to override types in debugging information

Many artificial types are introduced by GNAT in order to satisfy
constraints in GCC's internal trees or to generate optimal code.  These
hide original types from sources and miss useful information in the
debugging information or add noise to it and make debugging confusing.
This change introduces a new language hook to give a chance to
front-ends to restore the source types in the debugging information.

This change also enhance the array descriptor language hook to handle
array-wide bit/byte stride.  Some arrays may contain dynamically-sized
objects.  Debuggers need for these a hint to know the size allocated for
each element, hence the need for the array-wide bit/byte stride.

The Ada front-end is enhanced to take advantage of both hooks when
-fgnat-encodings=minimal, in order to keep compatibility with GDB.

gcc/ada/ChangeLog:

* gcc-interface/ada-tree.h (struct lang_type): Rename the t
field as t1 and add a t2 one.
(get_lang_specific): New.
(GET_TYPE_LANG_SPECIFIC): Refactor to use get_lang_specific.
(SET_TYPE_LANG_SPECIFIC): Likewise.
(GET_TYPE_LANG_SPECIFIC2): New macro.
(SET_TYPE_LANG_SPECIFIC2): New macro.
(TYPE_DEBUG_TYPE): New macro.
(SET_TYPE_DEBUG_TYPE): New macro.
* gcc-interface/decl.c (gnat_to_gnu_entity): When
-fgnat-encodings=minimal, set padding types' debug type to the
padded one (i.e. strip ___PAD GNAT encodings) and set
constrained record subtypes's debug type to the base type.
* gcc-interface/misc.c (gnat_print_type): Print debug types.
(gnat_get_debug_type): New.
(gnat_get_array_descr_info): When -fgnat-encodings=minimal, set
a byte stride for arrays that contain a type whose debug type
has variable length.
(LANG_HOOKS_GET_DEBUG_TYPE): Redefine macro to implement the
debug type language hook.
* gcc-interface/utils.c (maybe_pad_type): When
-fgnat-encodings=minimal, set padding types' debug type to the
padded one.  Restore XVZ variables creation when
-fgnat-encodings-minimal and use them to hold padding types'
byte size.  For library-level padding types, share this variable
across translation units.  Tag XVZ variables as artificial.

gcc/ChangeLog:

* langhooks.h (struct lang_hooks_for_types): Add a
get_debug_type field.
* langhooks-def.h (LANG_HOOKS_GET_DEBUG_TYPE): New macro.
(LANG_HOOKS_FOR_TYPES_INITIALIZER): Initialize the
get_debug_type field.
* dwarf2out.h (struct array_descr_info): Add an array-wide
stride field.
* dwarf2out.c (modified_type_die): Invoke the get_debug_type
language hook, process its result instead, if any.
(gen_descr_array_type_die): Add array-wide stride processing.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231763 138bc75d-0d04-0410-961f-82ee72b054a4

DWARF: handle variable-length records and variant parts

Enhance the DWARF back-end to emit proper descriptions for
variable-length records as well as variant parts in records.

In order to achieve this, generate DWARF expressions ("location
descriptions" in dwarf2out's parlance) for size and data member location
attributes.  Also match QUAL_UNION_TYPE data types as variant parts,
assuming the formers appear only to implement the latters (which is the
case at the moment: only the Ada front-end emits them).

Note that very few debuggers can handle these descriptions (GDB does not
yet), so in order to ease the the transition enable these only when
-fgnat-encodings=minimal.

gcc/ada/ChangeLog:

* gcc-interface/decl.c (gnat_to_gnu_entity): Disable ___XVS GNAT
encodings when -fgnat-encodings=minimal.
(components_to_record): Disable ___XVE, ___XVN, ___XVU and
___XVZ GNAT encodings when -fgnat-encodings=minimal.
* gcc-interface/utils.c (maybe_pad_type): Disable __XVS GNAT
encodings when -fgnat-encodings=minimal.

gcc/ChangeLog:

* debug.h (struct gcc_debug_hooks): Add a new size_function
hook.
* debug.c (do_nothing_debug_hooks): Set the size_function field
to no-op.
* dbxout.c (dbx_debug_hooks, xcoff_debug_hooks): Likewise.
* sdbout.c (sdb_debug_hooks): Likewise.
* vmsdbgout.c (vmsdbg_debug_hooks): Likewise.
* stor-layout.c (finalize_size_functions): Let the debug info
back-end know about the implementation of size functions.
* dwarf2out.h (dw_discr_list_ref): New typedef.
(enum dw_val_class): Add value classes for discriminant values
and discriminant lists.
(struct dw_discr_value): New structure.
(struct dw_val_node): Add discriminant values and discriminant
lists to the union.
(struct dw_loc_descr_node): Add frame_offset_rel and
dw_loc_frame_offset (only for checking) fields to handle DWARF
procedures generation.
(struct dw_discr_list_node): New structure.
* dwarf2out.c (dwarf2out_size_function): New.
(dwarf2_debug_hooks): Set the size_function field to
dwarf2out_size_function.
(dwarf2_lineno_debug_hooks): Set the size_function field to
no-op.
(new_loc_descr): Initialize the
dw_loc_frame_offset field.
(dwarf_proc_stack_usage_map): New.
(dw_val_equal_p): Handle discriminants.
(size_of_discr_value): New.
(size_of_discr_list): New.
(size_of_die): Handle discriminants.
(add_loc_descr_to_each): New.
(add_loc_list): New.
(print_discr_value): New.
(print_dw_val): Handle discriminants.
(value_format): Handle discriminants.
(output_discr_value): New.
(output_die): Handle discriminants.
(output_loc_operands): Handle DW_OP_call2 and DW_OP_call4.
(uint_loc_descriptor): New.
(uint_comparison_loc_list): New.
(loc_list_from_uint_comparison): New.
(add_discr_value): New.
(add_discr_list): New.
(AT_discr_list): New.
(loc_descr_to_next_no_op): New.
(free_loc_descr): New.
(loc_descr_without_nops): New.
(struct loc_descr_context): Add a dpi field.
(struct dwarf_procedure_info): New helper structure.
(new_dwarf_proc_die): New.
(is_handled_procedure_type): New.
(resolve_args_picking_1): New.
(resolve_args_picking): New.
(function_to_dwarf_procedure): New.
(copy_dwarf_procedure): New.
(copy_dwarf_procs_ref_in_attrs): New.
(copy_dwarf_procs_ref_in_dies): New.
(break_out_comdat_types): Copy DWARF procedures along with the
types that reference them.
(loc_list_from_tree): Rename into loc_list_from_tree_1.  Handle
CALL_EXPR in the cases suitable for DWARF procedures.  Handle
for PARM_DECL when generating a location description for a DWARF
procedure.  Handle big unsigned INTEGER_CST nodes.  Handle
NON_LVALUE_EXPR, EXACT_DIV_EXPR and all unsigned comparison
operators.  Add a wrapper for loc_list_from_tree that strips
DW_OP_nop operations from the result.
(type_byte_size): New.
(struct vlr_context): New helper structure.
(field_byte_offset): Change signature to return either a
constant offset or a location description for dynamic ones.
Handle dynamic byte offsets with constant bit offsets and handle
fields in variant parts.
(add_data_member_location): Change signature to handle dynamic
member offsets and fields in variant parts.  Update call to
field_byte_offset.  Handle location lists.  Emit a variable data
member location only when -fgnat-encodings=minimal.
(add_bound_info): Emit self-referential bounds only when
-fgnat-encodings=minimal.
(add_byte_size_attribute): Use type_byte_size in order to handle
dynamic type sizes.  Emit variable byte size only when
-fgnat-encodings=minimal and when the target DWARF version
allows them.
(add_bit_offset_attribute): Change signature to handle
variable-length records.  Update call to field_byte_offset.
(gen_descr_array_type_die): Update call to gen_field_die.
Update loc_descr_context literal.
(gen_type_die_for_member): Likewise.
(gen_subprogram_die): Update calls to get_decl_die.
(gen_field_die): Change signature to handle variable-length
records.  Update calls to add_bit_offset_attribute and
add_data_member_location_attribute.
(gen_inheritance_die): Update call to
add_data_member_location_attribute.
(gen_decl_die): Change signature to handle variable-length
records.  Update call to gen_field_die.
(gen_inheritance_die): Change signature to handle
variable-length records.  Update call to
add_data_member_location_attribute.
(is_variant_part): New.
(analyze_discr_in_predicate): New.
(get_discr_value): New.
(analyze_variants_discr): New.
(gen_variant_part): New.
(gen_member_die): Update calls to gen_decl_die.  Call instead
gen_variant_part for variant parts.
(gen_type_die_with_usage): Update calls to gen_decl_die.
(process_scope_var): Likewise.
(force_decl_die): Likewise.
(declare_in_namespace): Likewise.
(dwarf2out_decl): Likewise.
(prune_unused_types_walk_loc_descr): New.
(prune_unused_types_walk_attribs): Mark DIEs referenced by
location descriptions and loc. descr. lists.
(prune_unused_types_walk): Don't mark DWARF procedures by
default.  Mark variant parts since nothing is supposed to
reference them.
(dwarf2out_init): Allocate dwarf_proc_stack_usage_map.
(dwarf2out_c_finalize): Deallocate and reset
dwarf_proc_stack_usage_map.

gcc/testsuite/ChangeLog:

* gnat.dg/specs/debug1.ads: Update the expected number of
DW_AT_artificial attribute in compiler output.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231762 138bc75d-0d04-0410-961f-82ee72b054a4

Add a flag to control the balance between GNAT encodings and std. DWARF

In order to accomodate the debugger's support evolution for "new" DWARF
constructs, we need to have an flag that controls the amount of GNAT
encodings/standard DWARF information that is emitted in the debug info.
Propagate this new parameter into the Ada front-end.

gcc/ChangeLog:

* common.opt (gnat_encodings): New variable
(dwarf_gnat_encodings): New enum type.
(fgnat_encodings): New option.
* flag-types.h (enum dwarf_gnat_encodings): New.

gcc/ada/ChangeLog:

* gcc-interface/misc.c (gnat_encodings): Undefine macro and
declare a global variable.
(gnat_post_options): Initialize this global from options.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231761 138bc75d-0d04-0410-961f-82ee72b054a4

* config/isl.m4 (ISL_CHECK_VERSION): Add gmp libs.
* configure: Regenerate.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231759 138bc75d-0d04-0410-961f-82ee72b054a4