Only support -gstabs on Mac OS X if assember supports it (PR target/67973)

gcc:
PR target/67973
* configure.ac (gcc_cv_as_stabs_directive): New test.
* configure: Regenerate.
* config.in: Regenerate.
* config/darwin.h (DBX_DEBUGGING_INFO): Wrap in
HAVE_AS_STABS_DIRECTIVE.
(PREFERRED_DEBUGGING_TYPE): Likewise.
* config/i386/darwin.h (PREFERRED_DEBUGGING_TYPE): Only include
DBX_DEBUG if HAVE_AS_STABS_DIRECTIVE.

* doc/sourcebuild.texi (Effective-Target Keywords, Environment
attributes): Document stabs.

gcc/testsuite:
PR target/67973
* lib/target-supports.exp (check_effective_target_stabs): New
proc.
* g++.dg/cpp0x/alias-decl-debug-0.C: Restrict to stabs targets.
* g++.dg/other/PR23205.C: Likewise.
* g++.dg/other/pr23205-2.C: Likewise.
* gcc.dg/20040813-1.c: Likewise.
* gcc.dg/darwin-20040809-2.c: Likewise.
* objc.dg/stabs-1.m: Likewise.

From-SVN: r231747

jump-around-jump.c (rtc_set_time): Declare.

2015-12-17  Andrew Burgess  <andrew.burgess@embecosm.com>

        * gcc.target/arc/jump-around-jump.c (rtc_set_time): Declare.

From-SVN: r231746

revert: re PR testsuite/68629 (FAIL: c-c++-common/attr-simd-3.c)

2015-12-17  Thomas Preud'homme  <thomas.preudhomme@arm.com>

    Revert:
    2015-12-14  Thomas Preud'homme  <thomas.preudhomme@arm.com>

    PR testsuite/68629
    * lib/target-supports.exp (check_effective_target_cilkplus): Also
    check that compiling with -fcilkplus does not give an error.
    * c-c++-common/attr-simd-3.c: Require cilkplus effective target.

From-SVN: r231745

Fix some blockers of PR c++/24666 (arrays decay to pointers too early)

gcc/cp/ChangeLog:

PR c++/16333
PR c++/41426
PR c++/59878
PR c++/66895
* typeck.c (convert_for_initialization): Don't perform an early
decaying conversion if converting to a class type.

gcc/testsuite/ChangeLog:

PR c++/16333
PR c++/41426
PR c++/59878
PR c++/66895
* g++.dg/conversion/pr16333.C: New test.
* g++.dg/conversion/pr41426.C: New test.
* g++.dg/conversion/pr59878.C: New test.
* g++.dg/conversion/pr66895.C: New test.

From-SVN: r231736

Avoid code duplication in cp_tree_[operand|code]_length

gcc/cp/ChangeLog:

* tree.c (cp_tree_operand_length): Define in terms of
cp_tree_code_length.

From-SVN: r231735

Correct ChangeLogs for PR c++/42121 and related.

From-SVN: r231734

PR c/68868 - atomic_init emits an unnecessary fence

gcc/ChangeLog
* ginclude/stdatomic.h (atomic_init): Use atomic_store instead
of plain assignment.
gcc/testsuite/ChangeLog
* testsuite/gcc.dg/atomic/stdatomic-init.c: New test.

From-SVN: r231733

re PR target/68805 (ICE while var-tracking in simplify_binary_operation_1 with -g and -mvsx-timode)

[gcc]
2015-12-15  Michael Meissner  <meissner@linux.vnet.ibm.com>

PR target/68805
* config/rs6000/rs6000.c (rs6000_gen_le_vsx_permute): Use ROTATE
instead of VEC_SELECT for TImode.

* config/rs6000/vsx.md (VSX_LE): Move TImode from VSX_LE to
VSX_LE_128, so that we use ROTATE to swap the 64-bit words instead
of using VEC_SELECT.
(VSX_LE_128): Likewise.
(define_peephole2): Add peephole to eliminate double xxpermdi when
copying TImode.

[gcc/testsuite]
2015-12-15  Michael Meissner  <meissner@linux.vnet.ibm.com>

PR target/68805
* gcc.target/powerpc/pr68805.c: New test.

From-SVN: r231732

Daily bump.

From-SVN: r231731

re PR target/68779 (HPPA/PARISC 32-bit Linux kernel build triggers multiple ICEs)

PR target/68779
* config/pa/pa.md (atomic_loaddi): Honor -mdisable-fpregs.
(atomic_loaddi_1): Likewise.
(atomic_storedi): Likewise.
(atomic_storedi_1): Likewise.
(atomic_loaddf): Likewise.
(atomic_loaddf_1): Likewise.
(atomic_storedf): Likewise.
(atomic_storedf_1): Likewise.
Move all atomic patterns to end of file.

From-SVN: r231727

PR objc++/68932 - FAIL: obj-c++.dg/property/at-property-23.mm -fgnu-runtime

PR objc++/68932  - FAIL: obj-c++.dg/property/at-property-23.mm -fgnu-runtime
                   (internal compiler error)

cp/
* decl.c (grokdeclarator): Avoid assuming ctype is non-null when
checking the validity of a flexible array member.

testsuite/
* obj-c++.dg/property/at-property-23.mm: Remove check for
an error message.

From-SVN: r231726

attach schedule tree to the scop

we used to translate the just computed schedule tree into a union_map,
and then in the code generation it would be translated back to a schedule tree
just before generating AST code.

From-SVN: r231725

pt.c (comp_template_args): Remove.

2015-12-16  Paolo Carlini  <paolo.carlini@oracle.com>

* pt.c (comp_template_args): Remove.
(comp_template_args_with_info): Rename to comp_template_args;
not static.
(add_pending_template): Adjust call.
* cp-tree.h (comp_template_args): Add default arguments.

From-SVN: r231723

ipa-visibility.c (can_replace_by_local_alias): Make static, check ASM_OUTPUT_DEF.

* ipa-visibility.c (can_replace_by_local_alias): Make static,
check ASM_OUTPUT_DEF.
(can_replace_by_local_alias_in_vtable): Make static.
(function_and_variable_visibility): Reformat overlong comment.

From-SVN: r231721

ree.c (add_removable_extension): Use reg_overlap_mentioned_p rather than testing hard register #s.

* ree.c (add_removable_extension): Use reg_overlap_mentioned_p
rather than testing hard register #s.

From-SVN: r231719

nvptx.h (OUTGOING_STATIC_CHAIN_REGNUM): Remove.

* config/nvptx/nvptx.h (OUTGOING_STATIC_CHAIN_REGNUM): Remove.
(REGISTER_NAMES): Adjust.
* config/nvptx/nvptx.c (nvptx_pass_by_reference): Avoid long line.
(nvptx_static_hain): Delete.
(write_arg_mode): Don't emit initializer if argno < 0.
(write_arg_type): Fix whitespace.
(init_frame): Initialize reg to zero if frame is zero-sized.
(nvptx_declare_function_name):  Use write_arg_type to emit chain
decl.
(nvptx_output_call_insn): Adjust static chain emission.
(nvptx_goacc_reduction): Make static.
(TARGET_STATIC_CHAIN): Don't override.

From-SVN: r231718

* gcc.dg/tree-ssa/pr68619-4.c: Change size of code bitfield.

From-SVN: r231717

re PR c++/68309 (ICE: Segmentation fault)

PR c++/68309
* pt.c (instantiate_decl): Revert earlier change.

From-SVN: r231714

re PR c++/63628 ([c++1y] cannot use decltype on captured arg-pack)

PR c++/63628
* pt.c (tsubst_pack_expansion): Also make dummy decls if
retrieve_local_specialization fails.

From-SVN: r231713

Better error recovery for merge-conflict markers

gcc/c-family/ChangeLog:
* c-common.h (conflict_marker_get_final_tok_kind): New prototype.
* c-lex.c (conflict_marker_get_final_tok_kind): New function.

gcc/c/ChangeLog:
* c-parser.c (struct c_parser): Expand array "tokens_buf" from 2
to 4.
(c_parser_peek_nth_token): New function.
(c_parser_peek_conflict_marker): New function.
(c_parser_error): Detect conflict markers and report them as such.

gcc/cp/ChangeLog:
* parser.c (cp_lexer_peek_conflict_marker): New function.
(cp_parser_error): Detect conflict markers and report them as
such.

gcc/testsuite/ChangeLog:
* c-c++-common/conflict-markers-1.c: New testcase.
* c-c++-common/conflict-markers-2.c: Likewise.
* c-c++-common/conflict-markers-3.c: Likewise.
* c-c++-common/conflict-markers-4.c: Likewise.
* c-c++-common/conflict-markers-5.c: Likewise.
* c-c++-common/conflict-markers-6.c: Likewise.
* c-c++-common/conflict-markers-7.c: Likewise.
* c-c++-common/conflict-markers-8.c: Likewise.
* c-c++-common/conflict-markers-9.c: Likewise.
* c-c++-common/conflict-markers-10.c: Likewise.
* c-c++-common/conflict-markers-11.c: Likewise.
* g++.dg/conflict-markers-1.C: Likewise.

From-SVN: r231712

Add missing changelog entry

From-SVN: r231710

C FE: fix range of primary-expression in c_parser_postfix_expression

gcc/c/ChangeLog:
* c-parser.c (c_parser_postfix_expression): Use EXPR_LOC_OR_LOC
to preserve range information for the primary expression
in the call to c_parser_postfix_expression_after_primary.

gcc/testsuite/ChangeLog:
* gcc.dg/cast-function-1.c (bar): Update column numbers.
* gcc.dg/diagnostic-range-bad-called-object.c: New test case.

From-SVN: r231709

Remove individial dependence pointers and add a scop::dependence to contain all the dependence.

Removed the member variables which are only used in scop_get_dependence. Instead
only maintaining the overall dependence. Passes regtest and bootstrap.

gcc/ChangeLog:

2015-12-15  hiraditya  <hiraditya@msn.com>

        * graphite-dependences.c (scop_get_dependences): Use local pointers.
        * graphite-isl-ast-to-gimple.c(translate_isl_ast_to_gimple::scop_to_isl_ast):
          Use scop->dependence.
        * graphite-optimize-isl.c (optimize_isl): Same.
        * graphite-poly.c (new_scop): Remove initialization of removed members.
        (free_scop): Same.
        * graphite.h (struct scop): Remove individial dependence pointers and
        add a scop::dependence to contain all the dependence.

From-SVN: r231708

Use refs instead of values.

Passes bootstrap and regtest.

gcc/ChangeLog:

2015-12-15  hiraditya  <hiraditya@msn.com>

        * graphite-sese-to-poly.c (build_poly_sr): Use refs.

From-SVN: r231707

update required isl version

we check for a the isl compute timeout function added in isl 0.13.
That means GCC could still be configured with isl 0.13, 0.14, and 0.15.

* config/isl.m4 (ISL_CHECK_VERSION): Check for
isl_ctx_get_max_operations.
* configure: Regenerate.

gcc/
* config.in: Regenerate.
* configure: Regenerate.
* configure.ac: Remove checks for functions that exist in isl 0.13 or
later.
* graphite-isl-ast-to-gimple.c: Remove #ifdefs and code for isl 0.12.
        * graphite-optimize-isl.c: Same.
* graphite-poly.c: Same.
* graphite-sese-to-poly.c: Same.
* graphite.h: Add comment for isl 0.14.
* toplev.c (print_version): Print isl version.

Co-Authored-By: Sebastian Pop <s.pop@samsung.com>
From-SVN: r231706

ipa-cp.c (ipa_get_indirect_edge_target_1): Use can_refer; do not speculate to impossible targets.

* ipa-cp.c (ipa_get_indirect_edge_target_1): Use can_refer; do not
speculate to impossible targets.
* ipa-prop.c (try_make_edge_direct_virtual_call): Likewise.

From-SVN: r231705

C FE: use correct location range for static assertions

gcc/c/ChangeLog:
* c-parser.c (c_parser_static_assert_declaration_no_semi): Use the
expression location, falling back on the first token location,
rather than always using the latter.

gcc/testsuite/ChangeLog:
* gcc.dg/diagnostic-range-static-assert.c: New test case.

From-SVN: r231704

add more dumps on data dependence graph

Co-Authored-By: Sebastian Pop <s.pop@samsung.com>
From-SVN: r231703

re PR c/64637 (Incorrect location for -Wunused-value warnings in for-loop)

PR c/64637
* c-typeck.c (c_process_expr_stmt): Use location of the expression if
available.

* gcc.dg/pr64637.c: New test.

From-SVN: r231700

* gcc.dg/sibcall-9.c: Xfail for nvptx.

From-SVN: r231699

[AArch64] Properly cost zero_extend+ashift forms of ubfi[xz]

* config/aarch64/aarch64.c (aarch64_extend_bitfield_pattern_p):
New function.
(aarch64_rtx_costs, ZERO_EXTEND, SIGN_EXTEND cases): Use the above
to handle extend+shift rtxes.

From-SVN: r231698

unwind-generic.h (_Unwind_GetTextRelBase): Call __builtin_abort instead of abort to avoid dependency on stdlib.h.

2015-12-16  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * unwind-generic.h (_Unwind_GetTextRelBase): Call __builtin_abort
        instead of abort to avoid dependency on stdlib.h.

From-SVN: r231697

[AArch64] PR target/68696 FAIL: gcc.target/aarch64/vbslq_u64_1.c scan-assembler-times bif\tv 1

        PR target/68696
        * config/aarch64/aarch64-simd.md (*aarch64_simd_bsl<mode>_alt):
        New pattern.
        (aarch64_simd_bsl<mode>_internal): Update comment to reflect
        the above.

From-SVN: r231696

re PR middle-end/68870 (ICE on valid code at -O1, -O2 and -O3 on x86_64-linux-gnu)

2015-12-16  Richard Biener  <rguenther@suse.de>

PR tree-optimization/68870
* tree-cfgcleanup.c (cleanup_control_expr_graph): Add first_p
parameter, if set only perform trivial constant folding.
Queue other blocks with conditions for later processing.
(cleanup_control_flow_bb): Add first_p parameter and pass it through.
(cleanup_tree_cfg_1): Pass true for the first iteration
cleanup_control_expr_graph.

* gcc.dg/torture/pr68870.c: New testcase.

From-SVN: r231695

nvptx-protos.h (nvptx_hard_regno_mode_ok): Delete.

* config/nvptx/nvptx-protos.h (nvptx_hard_regno_mode_ok): Delete.
* config/nvptx/nvptx.h (struct machine_function):
Reimplement. Adjust all users.
* config/nvptx/nvptx.c (nvptx_declare_function_name): Move stack
and frame array generation earlier.
(nvptx_call_args): Reimplement.
(nvptx_expand_call): Adjust.
(nvptx_hard_reno_mode_ok): Delete.
(nvptx_reorg): Revert scan of hard regs.

From-SVN: r231691

Add pass_oacc_ipa

2015-12-16  Tom de Vries  <tom@codesourcery.com>

* opts.c (default_options_optimization): Set fipa-pta on by default for
fopenacc.
* passes.def: Move kernels pass group to pass_ipa_oacc.
* tree-pass.h (make_pass_oacc_kernels2): Remove.
(make_pass_ipa_oacc, make_pass_ipa_oacc_kernels): Declare.
* tree-ssa-loop.c (pass_oacc_kernels2, make_pass_oacc_kernels2): Remove.
(pass_ipa_oacc, pass_ipa_oacc_kernels): New pass.
(make_pass_ipa_oacc, make_pass_ipa_oacc_kernels): New function.
* tree-ssa-structalias.c (pass_ipa_pta::clone): New function.

* g++.dg/ipa/devirt-37.C: Update for new fre2 pass.
* g++.dg/ipa/devirt-40.C: Same.
* g++.dg/tree-ssa/pr61034.C: Same.
* gcc.dg/ipa/ipa-pta-1.c: Update for new pta1 pass.
* gcc.dg/ipa/ipa-pta-10.c: Same.
* gcc.dg/ipa/ipa-pta-11.c: Same.
* gcc.dg/ipa/ipa-pta-14.c: Same.
* gcc.dg/ipa/ipa-pta-16.c: Same.
* gcc.dg/ipa/ipa-pta-2.c: Same.
* gcc.dg/ipa/ipa-pta-5.c: Same.
* gcc.dg/ipa/ipa-pta-6.c: Same.
* gcc.dg/torture/ipa-pta-1.c: Same.
* gcc.dg/ipa/ipa-pta-13.c: Update for new fre2 and pta1 pass.
* gcc.dg/ipa/ipa-pta-3.c: Same.
* gcc.dg/ipa/ipa-pta-4.c: Same.

From-SVN: r231690

re PR tree-optimization/68861 (FAIL: libgomp.fortran/vla8.f90   -O3 -g  execution test)

2015-12-16  Richard Biener  <rguenther@suse.de>

PR tree-optimization/68861
* tree-vect-slp.c (vect_build_slp_tree): Properly handle
duplicate stmts when applying swapping to stmts.

From-SVN: r231689

i386-c.c (ix86_target_macros_internal): Remove duplicate check (__CLZERO__).

gcc/
* config/i386/i386-c.c (ix86_target_macros_internal): Remove
duplicate check (__CLZERO__).

From-SVN: r231688

re PR tree-optimization/68915 (gcc.dg/vect/pr46032.c FAILs)

2015-12-16  Richard Biener  <rguenther@suse.de>

PR testsuite/68915
* gcc.dg/vect/pr46032.c: Use dg-additional-options.

From-SVN: r231687

[ARM] Add ACLE intrinsics vqrdmlah_lane and vqrdmlsh_lane

* config/arm/arm_neon.h (vqrdmlahq_lane_s16): New.
(vqrdmlahq_lane_s32): New.
(vqrdmlah_lane_s16): New.
(vqrdmlah_lane_s32): New.
(vqrdmlshq_lane_s16): New.
(vqrdmlshq_lane_s32): New.
(vqrdmlsh_lane_s16): New.
(vqrdmlsh_lane_s32): New.
* config/arm/arm_neon_builtins.def: Add "vqrdmlah_lane" and
"vqrdmlsh_lane".

From-SVN: r231686

[ARM] Add ACLE intrinsics vqrdmlah and vqrdmlsh

* config/arm/arm_neon.h (vqrdmlah_s16, vqrdmlah_s32): New.
(vqrdmlahq_s16, vqrdmlahq_s32): New.
(vqrdmlsh_s16, vqrdmlsh_s32): New.
(vqrdmlahq_s16, vqrdmlshq_s32): New.
* config/arm/arm_neon_builtins.def: Add "vqrdmlah" and "vqrdmlsh".

From-SVN: r231685

re PR tree-optimization/68916 (gcc.dg/vect/slp-perm-4.c FAILs)

2015-12-16  Richard Biener  <rguenther@suse.de>

PR testsuite/68916
PR testsuite/68914
* gcc.dg/vect/pr45752.c: Require vect_perm and adjust expected
dump.
* gcc.dg/vect/slp-perm-4.c: Likewise.

From-SVN: r231684

[Testsuite] Support ARMv8.1 ARM tests.

testsuite/
* lib/target-supports.exp (add_options_for_arm_v8_1a_neon): Update
comment.  Use check_effective_target_arm_v8_1a_neon_ok to select
the command line options.
(check_effective_target_arm_v8_1a_neon_ok_nocache): Update initial
test to allow ARM targets.  Select and record a working set of
command line options.
(check_effective_target_arm_v8_1a_neon_hw): Add tests for ARM
targets.

gcc/
* doc/sourcebuild.texi (ARM-specific attributes): Add
"arm_v8_1a_neon_ok" and "arm_v8_1a_neon_hw".

From-SVN: r231683

[ARM] Add ACLE feature macro for ARMv8.1 instructions.

* config/arm/arm-c.c (arm_cpu_builtins): Define
__ARM_FEATURE_QRDMX.  Clean up some trailing whitespace.

From-SVN: r231682

[ARM] Add patterns for new instructions

* config/arm/iterators.md (VQRDMLH_AS): New.
(neon_rdma_as): New.
* config/arm/neon.md
(neon_vqrdml<VQRDMLH_AS:neon_rdma_as>h<mode>): New.
(neon_vqrdml<VQRDMLH_AS:neon_rdma_as>h_lane<mode>): New.
* config/arm/unspecs.md (UNSPEC_VQRDMLAH): New.
(UNSPEC_VQRDMLSH): New.

From-SVN: r231681

[ARM] Multilib support for ARMv8.1.

* config/arm/t-aprofile: Make "armv8.1-a" and "armv8.1-a+crc"
matches for "armv8-a".

From-SVN: r231680

[ARM] Add support for ARMv8.1.

* config/arm/arm-arches.def: Add "armv8.1-a" and "armv8.1-a+crc".
* config/arm/arm-protos.h (FL2_ARCH8_1): New.
(FL2_FOR_ARCH8_1A): New.
* config/arm/arm-tables.opt: Regenerate.
* config/arm/arm.c (arm_arch8_1): New.
(arm_option_override): Set arm_arch8_1.
* config/arm/arm.h (TARGET_NEON_RDMA): New.
(arm_arch8_1): Declare.
* doc/invoke.texi (ARM Options, -march): Add "armv8.1-a" and
"armv8.1-a+crc".
(ARM Options, -mfpu): Fix a typo.

From-SVN: r231678

libstdc++/68921 add timeout argument to futex(2)

PR libstdc++/68921
* src/c++11/futex.cc
(__atomic_futex_unsigned_base::_M_futex_wait_until): Use null pointer
as timeout argument.

From-SVN: r231676

[ARM] PR target/68648: Fold NOT of CONST_INT in andsi_iorsi3_notsi splitter

PR target/68648
* config/arm/arm.md (*andsi_iorsi3_notsi): Try to simplify
the complement of operands[3] during splitting.

* gcc.c-torture/execute/pr68648.c: New test.

From-SVN: r231675

re PR tree-optimization/68892 (Excessive dead loads produced by BB vectorization)

2015-12-16  Richard Biener  <rguenther@suse.de>

PR tree-optimization/68892
* tree-vect-slp.c (vect_analyze_slp_cost_1): Properly compute
cost for permuted loads.

* gcc.dg/vect/bb-slp-pr68892.c: New testcase.

From-SVN: r231674

re PR rtl-optimization/65980 (-fcompare-debug failure building Linux kernel)

PR rtl-optimization/65980
* jump.c (rtx_renumbered_equal_p) <case LABEL_REF>: Use
next_nonnote_nondebug_insn instead of next_real_insn and
skip over CODE_LABELs too.

* gcc.dg/pr65980.c: New test.

From-SVN: r231672

re PR middle-end/68878 (471.omnetpp in SPEC CPU 2006 is miscompiled with LTO)

PR lto/68878
* lto-symtab.c (lto_symtab_prevailing_virtual_decl): New function.
* lto-symtab.h (lto_symtab_prevailing_virtual_decl): Declare.
(lto_symtab_prevailing_decl): Use it.

From-SVN: r231671

symtab.c (symtab_node::fixup_same_cpp_alias_visibility): Do not copy DECL_VIRTUAL_P.

* symtab.c (symtab_node::fixup_same_cpp_alias_visibility):
Do not copy DECL_VIRTUAL_P.

From-SVN: r231670

Daily bump.

From-SVN: r231668

struct-layout-1_generate.c: Avoid generating further fields after the first flexible array member.

gcc/testsuite/ChangeLog:
2015-12-15  Martin Sebor  <msebor@redhat.com>

c++/42121
c++/68478
c++/68613
c++/68689
c++/68710
* g++.dg/compat/struct-layout-1_generate.c: Avoid generating
further fields after the first flexible array member.
* g++.dg/ext/flexary2.C: Expect a sole flexible array member
to be rejected.  Add a test case exercising zero-length array.
* g++.dg/ext/flexary3.C: Expect a sole flexible array member
to be rejected.
* g++.dg/ext/flexary.h: New file.
* g++.dg/ext/flexary4.C: New file.
* g++.dg/ext/flexary5.C: New file.
* g++.dg/ext/flexary6.C: New file.
* g++.dg/ext/flexary7.C: New file.
* g++.dg/ext/flexary8.C: New file.
* g++.dg/other/dump-ada-spec-2.C: Adjust to reflect flexible
array members.
* g++.dg/parse/pr43765.C: Add a member to make a struct with
a flexible array member valid.  Adjust expected error message.
* g++.dg/torture/pr64280.C: Expect a sole flexible array member
to be rejected.
* g++.dg/torture/pr64312.C: Add a member to make a struct with
a flexible array member valid.
* g++.dg/ubsan/object-size-1.C: Adjust expected diagnostic.

gcc/cp/ChangeLog:
2015-12-15  Martin Sebor  <msebor@redhat.com>

c++/42121
c++/68478
c++/68613
c++/68689
c++/68710
* class.c (walk_subobject_offsets): Avoid assuming type domain
is non-null or has an upper bound.
(layout_class_type): Include type size in error message.
(flexmems_t): New type.
(field_nonempty_p, find_flexarrays, diagnose_flexarrays)
(check_flexarrays): New functions.
(finish_struct_1): Call check_flexarrays.
* decl.c (compute_array_index_type): Distinguish flexible array
members from zero-length arrays.
(grokdeclarator): Reject flexible array members in unions.  Avoid
rejecting members of incomplete types that are flexible array members.
* error.c (dump_type_suffix): Handle flexible array members with null
upper bound.
* init.c (perform_member_init): Same.
* pt.c (instantiate_class_template_1): Allow flexible array members.
(tsubst): Handle flexible array members with null upper bound.
* typeck2.c (digest_init_r): Warn for initialization of flexible
array members.
(process_init_constructor_record): Handle flexible array members.

gcc/ChangeLog:
2015-12-15  Martin Sebor  <msebor@redhat.com>

c++/42121
* tree-chkp.c (chkp_find_bound_slots_1): Handle flexible array
members.
* tree.c (type_contains_placeholder_1): Avoid assuming type has
a non-null domain or an upper bound to handle flexible array
members.
* varasm.c (output_constructor_regular_field):  Same.
(output_constructor): Set min_index to integer_zero_node rather
than null when a type has no domain to avoid crashing later.

From-SVN: r231665

nvptx.c (write_one_arg): Rename to ...

* config/nvptx/nvptx.c (write_one_arg): Rename to ...
(write_arg_mode): ... here.  Update callers.
(write_arg): Rename to ...
(write__arg_type): ... here.  Update callers.
(write_return_mode): New fn, broken out of ...
(write_return): ... here.  Rename to ...
(write_return_type): ... here.  Call it. Update callers.
(write_fn_proto_from_insn): Use write_arg_mode and
write_return_mode.
(init_frame): New fn.
(nvptx_declare_function_name): Call it for frame and varargs. Only
emit outgoing static chain, if it's live.
(nvptx_output_return): Use reg_names for return reg name.
(nvptx_output_call_insn): Likewise.
(nvptx_reorg): Mark unused hard regs too.

From-SVN: r231663

Restore accidentally-removed volatile qualifier

* include/std/functional (_Mu<_Arg, false, false>::operator()): Restore
accidentally-removed volatile qualifier.

From-SVN: r231660

nvptx.md (nvptx_register_operand): Don't accept and then reject subregs.

* config/nvptx/nvptx.md (nvptx_register_operand): Don't accept and
then reject subregs.
(nvptx_reg_or_mem_operand): Likewise.
(nvptx_nonmemory_operand): Likewise.
(call_insn_operand): A regular predicate, check SYMBOL_REF_FUNCTION_P.
(call_insn, call_value_insn): Address is not SImode.
* config/nvptx/nvptx.h (FIXED_REGISTERS): Make return reg fixed.
(enum reg_class, REG_CLASS_NAMES, REG_CLASS_CONTENTS): Remove
RETURN_REG class.
(REGNO_REG_CLASS): Alwaus ALL_REGS.
(PROMOTE_MODE): QI and HI are the only smaller than SI int modes.
(HARD_FRAME_POINTER_REGNUM): Delete.
(REGISTER_NAMES): Move earlier.
(struct nvptx_args): Remove 'off'.
(INIT_CUMULATIVE_ARGS): Don't initialize 'off'.
(ELIMINABLE_REGS): Remove HARD_FRAME_POINTER_REGNUM.
* config/nvptx/nvptx.c (arg_promotion): Delete.
(nvptx_expand_call): Remove check for funtype being an fntype.

From-SVN: r231659

* hash-map.h, hash-table.h: Make copy constructors explicit.

From-SVN: r231658

Add space between name and email in Changelog

From-SVN: r231657

re PR c/68907 (bogus warning: right-hand operand of comma expression has no effect on an atomic_int preincrement)

PR c/68907
* c-typeck.c (build_atomic_assign): Set TREE_NO_WARNING on an
artificial decl.

* gcc.dg/pr68907.c: New test.

From-SVN: r231656

c-common.c (c_common_attribute_table): Handle "omp declare target link" attribute.

gcc/c-family/
* c-common.c (c_common_attribute_table): Handle "omp declare target
link" attribute.
gcc/
* cgraphunit.c (output_in_order): Do not assemble "omp declare target
link" variables in ACCEL_COMPILER.
* gimplify.c (gimplify_adjust_omp_clauses): Do not remove mapping of
"omp declare target link" variables.
* omp-low.c (scan_sharing_clauses): Do not remove mapping of "omp
declare target link" variables.
(add_decls_addresses_to_decl_constructor): For "omp declare target link"
variables output address of the artificial pointer instead of address of
the variable.  Set most significant bit of the size to mark them.
(pass_data_omp_target_link): New pass_data.
(pass_omp_target_link): New class.
(find_link_var_op): New static function.
(make_pass_omp_target_link): New function.
* passes.def: Add pass_omp_target_link.
* tree-pass.h (make_pass_omp_target_link): Declare.
* varpool.c (symbol_table::output_variables): Do not assemble "omp
declare target link" variables in ACCEL_COMPILER.
gcc/lto/
* lto.c: Include stringpool.h and fold-const.h.
(offload_handle_link_vars): New static function.
(lto_main): Call offload_handle_link_vars.
libgomp/
* libgomp.h (REFCOUNT_LINK): Define.
(struct splay_tree_key_s): Add link_key.
* target.c (gomp_map_vars): Treat REFCOUNT_LINK objects as not mapped.
Replace target address of the pointer with target address of newly
mapped object in the splay tree.  Set link pointer on target to the
device address of the mapped object.
(gomp_unmap_vars): Restore target address of the pointer in the splay
tree for REFCOUNT_LINK objects after unmapping.
(gomp_load_image_to_device): Set refcount to REFCOUNT_LINK for "omp
declare target link" objects.
(gomp_unload_image_from_device): Replace j with i.  Force unmap of all
"omp declare target link" objects, which were mapped for the image.
(gomp_exit_data): Restore target address of the pointer in the splay
tree for REFCOUNT_LINK objects after unmapping.
* testsuite/libgomp.c/target-link-1.c: New file.

From-SVN: r231655

re PR middle-end/21273 (gensupport.c:collect_insn_data doesn't consider the constraints of match_scratch)

Fix PR21273

PR middle-end/21273
* gensupport.c (collect_insn_data): Look for number of alternatives
in MATCH_SCRATCH.

From-SVN: r231654

Remove vestigial traces of std::tr1::bind

* include/std/functional (is_placeholder, is_bind_expression): Update
comments.
(_Safe_tuple_element): Replace with _Safe_tuple_element_t alias
template.
(_Mu): Remove vestigial TR1 return types and update coments.

From-SVN: r231653

Fix cv-qualifiers in std::bind invocation

PR libstdc++/68912
* include/std/functional (_Bind::operator()): Use lvalue functor to
deduce return type.
* testsuite/20_util/bind/68912.cc: New.

From-SVN: r231652

nvptx.h (HARD_REGNO_NREGS): Reformat.

* config/nvptx/nvptx.h (HARD_REGNO_NREGS): Reformat.
(CANNOT_CHANGE_MODE_CLASS): Always return true.
(HARD_REGNO_MODE_OK): Reformat.
* config/nvptx/nvptx.md (define_expand mov<mode>): No
RETURN_REGNUM handling here.
* config/nvptx/nvptx.c (nvptx_function_value): Set ret_reg_mode
here.
(write_one_arg): No QI or HI mode args.
(write_fn_proto_from_insn): No argument promotion here.
(nvptx_output_return_insn): No return promotion here.
(nvptx_output_mov_insn): No RETURN_REGNUM handling needed.
(nvptx_output_call_insn): No return promotion here.

From-SVN: r231651

Fix ICE for coarray Critical inside module procedure

From-SVN: r231649

[PR 68851] Do not collect thunks in collect_callers

2015-12-15  Martin Jambor  <mjambor@suse.cz>

PR ipa/68851
* cgraph.c (collect_callers_of_node_1): Do not collect thunks.
* cgraph.h (cgraph_node): Change comment of collect_callers.

testsuite/
* g++.dg/ipa/pr68851.C: New test.

From-SVN: r231648

Add myself to MAINTAINERS

From-SVN: r231647

re PR c++/63506 (GCC deduces wrong return type of operator*() inside template functions)

2015-12-15  Paolo Carlini  <paolo.carlini@oracle.com>

PR c++/63506
* g++.dg/cpp0x/pr63506-1.C: New.
* g++.dg/cpp0x/pr63506-2.C: Likewise.

From-SVN: r231646

Skip block move tests for mcpu=gr5 on Visium

testsuite/
        * gcc.target/visium/block_move.c: Skip for -mcpu=gr5.

From-SVN: r231645

re PR debug/66688 (compare debug failure building Linux kernel on ppc64le)

PR tree-optimization/66688
* tree-cfgcleanup.c (cleanup_control_flow_bb): Handle
noreturn call followed only by debug stmts by removing
the debug stmts and handling it the same as if the noreturn
call is the last stmt.

* gcc.dg/pr66688.c: New test.

From-SVN: r231644

re PR libstdc++/68863 (Regular expressions: Backreferences don't work in negative lookahead)

PR libstdc++/68863
* include/bits/regex_executor.tcc (_Executor::_M_lookahead):
Copy the captured content for lookahead, so that the backreferences
inside can refer to them.
* testsuite/28_regex/algorithms/regex_match/ecma/char/68863.cc:
New testcase.

From-SVN: r231641

Fix PR c++/21802 (two-stage name lookup fails for operators)

gcc/cp/ChangeLog:

PR c++/21802
PR c++/53223
* cp-tree.h (cp_tree_code_length): Declare.
(build_min_non_dep_op_overload): Declare.
* tree.c (cp_tree_code_length): Define.
(build_min_non_dep_op_overload): Define.
(build_win_non_dep_call_vec): Copy the KOENIG_LOOKUP_P flag.
* typeck.c (build_x_indirect_ref): Use
build_min_non_dep_op_overload when the given expression
has been resolved to an operator overload.
(build_x_binary_op): Likewise.
(build_x_array_ref): Likewise.
(build_x_unary_op): Likewise.
(build_x_compound_expr): Likewise.
(build_x_modify_expr): Likewise.
* decl2.c (grok_array_decl): Likewise.
* call.c (build_new_op_1): If during template processing we
chose an operator overload that is a hidden friend function, set
the call's KOENIG_LOOKUP_P flag to 1.

gcc/testsuite/ChangeLog:

PR c++/21802
PR c++/53223
* g++.dg/cpp0x/pr53223.C: New test.
* g++.dg/lookup/pr21802.C: New test.
* g++.dg/lookup/two-stage4.C: Remove XFAIL.

From-SVN: r231640

PR libfortran/pr68867

2015-12-14  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

PR libfortran/pr68867
* io/write.c (set_fnode_default): For kind=16, set the decimal precision
depending on the platform binary precision, 106 or 113.

From-SVN: r231639

Daily bump.

From-SVN: r231638

ssa-fre-4.c: Remove mips*-*-* target.

2015-12-14  Steve Ellcey  <sellcey@imgtec.com>

* gcc.dg/tree-ssa/ssa-fre-4.c: Remove mips*-*-* target.
* gcc.target/mips/ext-2.c: Update scan checks.

From-SVN: r231635

mips.c (mips_promote_function_mode): New function.

2015-12-14  Steve Ellcey  <sellcey@imgtec.com>

* config/mips/mips.c (mips_promote_function_mode): New function.
(TARGET_PROMOTE_FUNCTION_MODE): Define as above function.
(TARGET_PROMOTE_PROTOTYPES): Remove.

From-SVN: r231634

re PR c++/68309 (ICE: Segmentation fault)

PR c++/68309
gcc/
* hash-table.h: Add copy constructor.
* hash-map.h: Add copy constructor.
gcc/cp/
* pt.c (instantiate_decl): Copy local_specializations for nested
function.

From-SVN: r231632

re PR fortran/68850 (Coarray events: EVENT_QUERY not documented as intrinsic subroutine)

2014-12-14  Tobias Burnus  <burnus@net-b.de>

        PR fortran/68850
        * gfortran.texi (Standards): Mention TS 18508.
        (Fortran 2003 and 2008 Status): Add section on TS 18508 status.
        * intrinsic.texi (EVENT_QUERY): Add.

From-SVN: r231631

Dump default defs for arguments, static chain and decl-by-reference

2015-12-14  Tom de Vries  <tom@codesourcery.com>

PR other/68882
* gimple-pretty-print.c (dump_ssaname_info_to_file): New function.
* gimple-pretty-print.h (dump_ssaname_info_to_file): Declare.
* tree-cfg.c (dump_default_def): New function.
(dump_function_to_file): Dump default defs for arguments, static chain,
and decl-by-reference.

From-SVN: r231630

nvptx.h (PARM_BOUNDARY): Set to 32.

gcc/
* config/nvptx/nvptx.h (PARM_BOUNDARY): Set to 32.
* config/nvptx/nvptx.c (PASS_IN_REG_P, RETURN_IN_REG_P): Delete.
(pass_in_memory, promote_arg, promote_return): New.
(nvptx_function_arg_boundary): Delete.
(nvptx_function_value): Use promote_return.
(nvptx_pass_by_reference): Use pass_in_memory.
(nvptx_return_in_memory): Use pass_in_memory.
(nvptx_promote_function_mode): Use promote_arg.
(write_arg): Adjust arg splitting logic.
(write_return): Check and clear ret_reg_mode, if needed.
(write_fn_proto, nvptx_declare_function_name): Adust write_return
calls.
(TARGET_RUNCTION_ARG_BOUNDARY,
TARGET_FUNCTION_ARG_ROUND_BOUNDARY): Don't override.

gcc/testsuite/
* g++.dg/abi/nvptx-nrv1.C: New.
* g++.dg/abi/nvptx-ptrmem1.C: New.
* gcc.target/nvptx/abi-complex-arg.c: New.
* gcc.target/nvptx/abi-complex-ret.c: New.
* gcc.target/nvptx/abi-enum-arg.c: New.
* gcc.target/nvptx/abi-enum-ret.c: New.
* gcc.target/nvptx/abi-knr-arg.c: New.
* gcc.target/nvptx/abi-knr-ret.c: New.
* gcc.target/nvptx/abi-scalar-arg.c: New.
* gcc.target/nvptx/abi-scalar-ret.c: New.
* gcc.target/nvptx/abi-struct-arg.c: New.
* gcc.target/nvptx/abi-struct-ret.c: New.
* gcc.target/nvptx/abi-vararg-1.c: New.
* gcc.target/nvptx/abi-vararg-2.c: New.
* gcc.target/nvptx/abi-vect-arg.c: New.
* gcc.target/nvptx/abi-vect-ret.c: New.

From-SVN: r231628

re PR c/68833 (-Werror=format issues an error now)

PR c/68833
* common.opt (Wmissing-noreturn): Add Warning option.
* opts-common.c (control_warning_option): If opt is
alias_target with alias_arg, set arg to it.

* c.opt (Wmissing-format-attribute, Wnormalized): Add Warning option.

* c-c++-common/pr68833-1.c: New test.
* c-c++-common/pr68833-2.c: New test.

From-SVN: r231624

libgomp.h (gomp_device_state): New enum.

libgomp/
* libgomp.h (gomp_device_state): New enum.
(struct gomp_device_descr): Replace is_initialized with state.
(gomp_fini_device): Remove declaration.
* oacc-host.c (host_dispatch): Use state instead of is_initialized.
* oacc-init.c (acc_init_1): Use state instead of is_initialized.
(acc_shutdown_1): Likewise.  Inline gomp_fini_device.
(acc_set_device_type): Use state instead of is_initialized.
(acc_set_device_num): Likewise.
* target.c (resolve_device): Use state instead of is_initialized.
Do not initialize finalized device.
(gomp_map_vars): Do nothing if device is finalized.
(gomp_unmap_vars): Likewise.
(gomp_update): Likewise.
(GOMP_offload_register_ver): Use state instead of is_initialized.
(GOMP_offload_unregister_ver): Likewise.
(gomp_init_device): Likewise.
(gomp_unload_device): Likewise.
(gomp_fini_device): Remove.
(gomp_get_target_fn_addr): Do nothing if device is finalized.
(GOMP_target): Go to host fallback if device is finalized.
(GOMP_target_ext): Likewise.
(gomp_exit_data): Do nothing if device is finalized.
(gomp_target_task_fn): Go to host fallback if device is finalized.
(gomp_target_fini): New static function.
(gomp_target_init): Use state instead of is_initialized.
Call gomp_target_fini at exit.
liboffloadmic/
* plugin/libgomp-plugin-intelmic.cpp (unregister_main_image): Remove.
(register_main_image): Do not call unregister_main_image at exit.
(GOMP_OFFLOAD_fini_device): Allow for OpenMP.  Unregister main image.

From-SVN: r231623

rs6000: Fix a mistake in cstore_si_as_di (PR68865, PR68879)

convert_move does not know how to zero-extend a constant integer to the
target mode -- simply because it does not know the source mode.  As a
result, 32-bit SImode with the high bit set would be effectively sign-
extended instead of zero-extended.

This patch fixes it.

PR target/68865
PR target/68879
* config/rs6000/rs6000.md (cstore_si_as_di): Force all operands
into registers.

From-SVN: r231621

re PR tree-optimization/68707 (testcase gcc.dg/vect/O3-pr36098.c vectorized using VEC_PERM_EXPR rather than VEC_LOAD_LANES)

2015-12-10  Richard Biener  <rguenther@suse.de>

PR tree-optimization/68707
PR tree-optimization/67323
* tree-vect-slp.c (vect_analyze_slp_instance): Drop SLP instances
if they can be vectorized using load/store-lane instructions.

From-SVN: r231620

re PR middle-end/68852 (ICE in vect_is_simple_use (tree-vect-stmts.c:8750) using -O3)

2015-12-14  Richard Biener  <rguenther@suse.de>

PR tree-optimization/68852
* tree-vectorizer.h (struct _slp_tree): Add def_type member.
(SLP_TREE_DEF_TYPE): New accessor.
* tree-vect-stmts.c (vect_is_simple_use): Remove BB vectorization
hack.
* tree-vect-slp.c (vect_create_new_slp_node): Initialize
SLP_TREE_DEF_TYPE.
(vect_build_slp_tree): When a node is to be built up from scalars
do not push a NULL as child but instead set its def_type to
vect_external_def.
(vect_analyze_slp_cost_1): Check for child def-type instead
of NULL.
(vect_detect_hybrid_slp_stmts): Likewise.
(vect_bb_slp_scalar_cost): Likewise.
(vect_get_slp_defs): Likewise.
(vect_slp_analyze_node_operations): Likewise.  Before
processing node push the children def-types to the underlying
stmts vinfo and restore it afterwards.
(vect_schedule_slp_instance): Likewise.
(vect_slp_analyze_bb_1): Do not mark stmts not in SLP instances
as not vectorizable.

* g++.dg/torture/pr68852.C: New testcase.

From-SVN: r231619

re PR tree-optimization/68775 (spec2006 test case 465.tonto fails with the gcc 6.0 fortran compiler)

2015-12-14  Richard Biener  <rguenther@suse.de>

PR tree-optimization/68775
* tree-vect-slp.c (vect_build_slp_tree): Make sure to apply
a operand swapping even if replacing the op with scalars.

From-SVN: r231617

[combine] Don't create LSHIFTRT of zero bits in change_zero_ext

* combine.c (change_zero_ext): Do not create a shift of zero length.

From-SVN: r231613

Bad date on the Changelog entry, boo hiss.

From-SVN: r231612

Document the implementation of Logical Operator Type Traits.

* doc/html/index.html: Regenerate.
* doc/html/manual/status.html: Likewise.
* doc/xml/manual/status_cxx2017.xml: Add P0013R1 to C++ 201z
and to Library Fundamentals 2 TS.

From-SVN: r231611

builtin-return-1.c: Correct effective-target test.

* gcc.dg/builtin-return-1.c: Correct effective-target test.
* gcc.dg/stack-usage-2.c: Use effective-target test.

From-SVN: r231610

[ARC] Use TARGET_NO_SPECULATION_IN_DELAY_SLOTS_P hook.

gcc/
2015-12-14  Claudiu Zissulescu  <claziss@synopsys.com>

* config/arc/arc.c (TARGET_NO_SPECULATION_IN_DELAY_SLOTS_P):
Provide target hook.
(arc_no_speculation_in_delay_slots_p): New function.

From-SVN: r231609

[ARC] Refurbish emitting DWARF2 related information when expanding epilogue.

gcc/
2015-12-14  Claudiu Zissulescu  <claziss@synopsys.com>
    Andrew Burgess  <andrew.burgess@embecosm.com>

* config/arc/arc.c (frame_move): Set frame related flag.
(arc_save_restore): Emit epilogue related DWARF2 information.
(arc_expand_epilogue): Likewise.
* config/arc/arc.opt (mno-epilogue-cfi): Remove.
(mepilogue-cfi): Likewise.
* doc/invoke.texi: Remove -m[no]-epilogue-cfi documentation.

Co-Authored-By: Andrew Burgess <andrew.burgess@embecosm.com>
From-SVN: r231608

[PR 66616] Check for thunks when adding extra constants to clones

2015-12-14  Martin Jambor  <mjambor@suse.cz>

PR ipa/66616
* ipa-cp.c (propagate_constants_accross_call): Move thuk check...
(call_passes_through_thunk_p): ...here.
(find_more_scalar_values_for_callers_subset): Perform thunk checks
like propagate_constants_accross_call does.

testsuite/
* g++.dg/ipa/pr66616.C: New test.

From-SVN: r231607

re PR rtl-optimization/68730 (wrong code at -O3 on x86_64-linux-gnu (in 32-bit mode))

PR rtl-optimization/68730
* cfgrtl.c (cfg_layout_finalize): Free dominators.

* gcc.dg/pr68730.c: New test.

From-SVN: r231606

re PR testsuite/68629 (FAIL: c-c++-common/attr-simd-3.c)

2015-12-14  Thomas Preud'homme  <thomas.preudhomme@arm.com>

    PR testsuite/68629
    * lib/target-supports.exp (check_effective_target_cilkplus): Also
    check that compiling with -fcilkplus does not give an error.
    * c-c++-common/attr-simd-3.c: Require cilkplus effective target.

From-SVN: r231605

Daily bump.

From-SVN: r231604

[PR67355] drop dummy zero from reverse VTA ops, fix infinite recursion

VTA's cselib expression hashing compares expressions with the same
hash before adding them to the hash table.  When there is a collision
involving a self-referencing expression, we could get infinite
recursion, in spite of the cycle breakers already in place.  The
problem is currently latent in the trunk, because by chance we don't
get a collision.

Such value cycles are often introduced by reverse_op; most often,
they're indirect, and then value canonicalization takes care of the
cycle, but if the reverse operation simplifies to the original value,
we used to issue a (plus V (const_int 0)), because at some point
adding a plain value V to a location list as a reverse_op equivalence
caused other problems.

This dummy zero, in turn, caused the value canonicalizer to not fully
realize the equivalence, leading to more complex graphs and,
occasionally, to infinite recursion when comparing such
value-plus-zero expressions recursively.

Simply using V solves the infinite recursion from the PR testcase,
since the extra equivalence and the preexisting value canonicalization
together prevent recursion while the unrecognized equivalence
wouldn't, but it exposed another infinite recursion in
memrefs_conflict_p: get_addr had a cycle breaker in place, to skip RTL
referencing values introduced after the one we're examining, but it
wouldn't break the cycle if the value itself appeared in the
expression being examined.

After removing the dummy zero above, this kind of cycle in the
equivalence graph is no longer introduced by VTA itself, but dummy
zeros are also present in generated code, such as in the 32-bit x86's
pro_epilogue_adjust_stack_si_add epilogue insn generated as part of
the builtin longjmp in _Unwind_RaiseException building libgcc's
unwind-dw2.o.  So, break the recursion cycle for them too.

for  gcc/ChangeLog

PR debug/67355
* var-tracking.c (reverse_op): Don't add dummy zero to reverse
ops that simplify back to the original value.
* alias.c (refs_newer_value_p): Cut off recursion for
expressions containing the original value.

From-SVN: r231599

* gcc.dg/graphite/pr42729.c: XFAIL AIX.

From-SVN: r231598