During the compiler's order_evaluations() pass, duplicate
    call statements were being created and inserted into block
    statement lists in situations where there were calls returning
    multiple arguments. These duplicates were benign in that they
    were ignored during backend code generation, however they
    did cause duplicate calls in AST dumps. Tweak the order
    evaluation code to handle this case better and avoid inserting
    these duplicates.
    
    Fixes golang/go#17237
    
    Reviewed-on: https://go-review.googlesource.com/29857

From-SVN: r240559

    
    When emitting AST dumps, tag the end of selected statements with with
    source file and line number information where available. Example:
    
      tmp.76832448 = 0 // p.go:6
    
    Requires a corresponding change in gcc/go as well as this change to
    gofrontend.
    
    Reviewed-on: https://go-review.googlesource.com/29856

	* go-linemap.cc (Gcc_linemap::to_string): New method.

From-SVN: r240558

	* c-cppbuiltin.c (c_cpp_builtins): Define __cpp_capture_star_this for
	-std=c++1z.

	* g++.dg/cpp1z/feat-cxx1z.C: Add __cpp_capture_star_this test.

From-SVN: r240557

	Implement P0018R3, C++17 lambda capture of *this by value as [=,*this]
	* parser.c (cp_parser_lambda_introducer): Formatting fix.  Pass
	true instead of false as by_reference_p to add_capture for 'this'.
	Parse '*this' simple-capture.
	* lambda.c (build_capture_proxy): Handle '*this' capture by value.
	(add_capture): Adjust function comment.  For id == this_identifier,
	treat by_reference_p as capturing '*this' by reference, i.e. 'this'
	by value, and !by_reference_p as capturing '*this' by value.
	(add_default_capture): For implicit 'this' capture, always pass
	by_reference_p true rather than false.

	* g++.dg/cpp1z/lambda-this1.C: New test.
	* g++.dg/cpp1z/lambda-this2.C: New test.

From-SVN: r240556

re PR c++/77722 (-fsanitize=undefined doesn't give runtime error in function without return value, unless at least 2 instructions)

	PR c++/77722
	* cp-gimplify.c (cp_ubsan_maybe_instrument_return): Instrument also
	functions that have just a STATEMENT_LIST instead of BIND_EXPR, or
	BIND_EXPR with some statement rather than STATEMENT_LIST as body.

	* g++.dg/ubsan/return-4.C: New test.
	* g++.dg/ubsan/return-5.C: New test.
	* g++.dg/ubsan/return-6.C: New test.

From-SVN: r240555

	* auto-inc-dec.c (try_merge): Remove break after return.
	* cselib.c (autoinc_split): Likewise.
	* explow.c (promote_mode): Likewise.
	* fixed-value.c (fixed_arithmetic): Likewise.
	* hsa.c (hsa_internal_fn::get_arity): Likewise.
	* rtlanal.c (modified_between_p, modified_in_p): Likewise.
	* trans-mem.c (get_attrs_for): Likewise.
	* tree-if-conv.c (if_convertible_stmt_p): Likewise.
	* tree-vrp.c (simplify_stmt_using_ranges): Likewise.
	* config/aarch64/aarch64-builtins.c (aarch64_fold_builtin): Likewise.
	* config/aarch64/aarch64.c (aarch64_get_condition_code_1): Likewise.
	* config/c6x/c6x.c (c6x_get_unit_specifier): Likewise.
	* config/cr16/cr16.c (legitimate_pic_operand_p): Likewise.
	* config/cris/cris.c (cris_op_str): Likewise.
	* config/mn10300/mn10300.c (cc_flags_for_code): Likewise.
	* config/tilepro/tilepro.c (tilepro_emit_setcc_internal_di): Likewise.
c-family/
	* c-ada-spec.c (print_ada_declaration): Remove break after return.
objc/
	* objc-act.c (continue_class): Remove break after return.
	(objc_maybe_printable_name): Likewise.
fortran/
	* dependency.c (gfc_dep_compare_expr): Remove break after return.
	* frontend-passes.c (optimize_op): Likewise.
	* interface.c (gfc_current_interface_head): Likewise.
	* symbol.c (check_conflict): Likewise.
	* trans-intrinsic.c (build_fix_expr): Likewise.
ada/
	* terminals.c (is_gui_app): Remove break after return.

From-SVN: r240554

	* internal-fn.h (IFN_UNIQUE_CODES, IFN_GOACC_LOOP_CODES,
	IFN_GOACC_REDUCTION_CODES): New.
	(enum ifn_unique_kind, enum ifn_goacc_loop_kind, enum
	ifn_goacc_reduction_kind): Use them.
	* gimple-pretty-print.c (dump_gimple_call_args): Decode first arg
	of internal functions, when applicable.

From-SVN: r240552

gcc/testsuite/

	* lib/target-supports.exp
	(check_effective_target_arm_v8_2a_fp16_scalar_hw): Delete redundant word
	in function comment.

From-SVN: r240551

	* doc/xml/manual/status_cxx2017.xml: Update status.
	* doc/html/*: Regenerate.
	* include/std/functional (__cpp_lib_boyer_moore_searcher): Define.
	* testsuite/20_util/function_objects/searchers.cc: Test feature macro.

From-SVN: r240550

	* doc/xml/manual/status_cxx2017.xml: Update status.
	* include/c_global/cmath (hypot): Add three-dimensional overloads.
	* testsuite/26_numerics/headers/cmath/hypot.cc: New.

From-SVN: r240547

Revert a part of the `d' constraint documentation update made with
commit 111868 ("Use define_constraint for MIPS"),
<https://gcc.gnu.org/ml/gcc-patches/2006-03/msg00460.html>,
<https://gcc.gnu.org/ml/gcc-patches/2006-03/msg00541.html>, which
inadvertently made the registers covered to be referred to as "address"
rather than "general-purpose" registers, and then further clarify the
set of registers allowed with MIPS16 code.

	* config/mips/constraints.md (d): Fix documentation.
	* doc/md.texi (Machine Constraints): Update accordingly.

From-SVN: r240546

2016-09-27  Richard Biener  <rguenther@suse.de>

	* dwarf2out.c (dwarf2out_init): Move text_section_line_info,
	cur_line_info_table initialization ...
	(dwarf2out_assembly_start): ... here.

From-SVN: r240545

From-SVN: r240542

gcc/
2016-09-27  Matthew Wahab  <matthew.wahab@arm.com>

	* config/arm/arm.md (*arm_movsi_insn): Add "arch" attribute.
	* config/arm/vfp.md (*arm_movhi_vfp): Likewise.
	(*thumb2_movhi_vfp): Likewise.
	(*arm_movhi_fp16): Remove predication operand from VMOV.F16
	template.  Expand predicable attribute to mark VMOV.F16 as not
	predicable.  Add "arch" attribute.
	(*thumb2_movhi_fp16): Likewise.
	(*arm_movsi_vfp): Break a long line.  Add "arch" attribute.
	(*thumb2_movsi_vfp): Add "arch" attribute.

From-SVN: r240541

From-SVN: r240540

	* config/c6x/c6x.h: Adjust fall through comment.
	* config/sh/sh.c (final_prescan_insn): Likewise.
	* config/visium/visium.c (visium_expand_int_cstore): Likewise.
	(visium_expand_fp_cstore): Likewise.

From-SVN: r240539

	* config/ia64/ia64.c (ia64_print_operand): Adjust fall through
	comment.

From-SVN: r240538

	* config/arm/arm.c (const_ok_for_op): Use "Fall through" comment form
	expected by -Wimplicit-fallthrough.
	(thumb1_size_rtx_costs): Likewise.
	(thumb2_reorg): Likewise.
	(tls_mentioned_p): Add "Fall through" comment.
	(thumb2_reorg): Likewise.
	* config/arm/arm-builtins.c (arm_expand_neon_args): Use "Fall through"
	comment form expected by -Wimplicit-fallthrough.

From-SVN: r240537

Fix PR gcov-profile/46266

	PR gcov-profile/46266
	* lib/gcov.exp: Verify that <built-in>.gcov file is not
	considered.
	* input.h (RESERVED_LOCATION_P): New macro.
	* profile.c (branch_prob): Use RESERVED_LOCATION_P and
	instread of comparison with UNKNOWN_LOCATION.

From-SVN: r240536

2016-09-27  Olivier Hainque  <hainque@adacore.com>

	* MAINTAINERS (VxWorks ports): Add self.
	(Write After Approval): Update self email address.

From-SVN: r240535

2016-09-27  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/77745
	* tree-ssa-pre.c (eliminate_dom_walker::before_dom_children):
	When removing redundant stores make sure to check compatibility
	of the TBAA state for downstream accesses.
	* tree-ssa-sccvn.c (visit_reference_op_store): Likewise for when
	value-numbering virtual operands for store matches.

	* g++.dg/torture/pr77745.C: New testcase.

From-SVN: r240534

gcc/
	PR target/51244
	* config/sh/sh.c (sh_rtx_costs): Fix return value of SET of movt and
	movrt patterns.  Match them before anything else in the SET case.

From-SVN: r240533

2016-09-27  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/77478
	* gcc.dg/torture/pr77478.c: New testcase.

From-SVN: r240530

	PR gcov-profile/7970
	PR gcov-profile/16855
	PR gcov-profile/44779
	* g++.dg/gcov/pr16855.C: New test.
	* coverage.c (build_gcov_exit_decl): New function.
	(coverage_obj_init): Call the function and generate __gcov_exit
	destructor.
	* doc/gcov.texi: Document when __gcov_exit function is called.
	* libgcov-driver.c (__gcov_init): Do not register a atexit
	handler.
	(__gcov_exit): Rename from gcov_exit.
	* libgcov.h (__gcov_exit): Declare.

From-SVN: r240529

The test has a bunch of hardcoded integer literals that would fit only in a 
32 bits+ int, causing overflow warnings for a 16 bit int target like avr.

gcc/testsuite/ChangeLog

2016-09-27  Senthil Kumar Selvaraj  <senthil_kumar.selvaraj@atmel.com>

	* gcc.dg/tree-ssa/builtin-sprintf-warn-1.c: Require int32plus.

From-SVN: r240528

re PR bootstrap/77751 (cc1plus: error: unrecognized command line option "-Wno-implicit-fallthrough" for insn-emit.o)

	PR bootstrap/77751
	* Makefile.in (insn-attrtab.o-warn, insn-dfatab.o-warn,
	insn-latencytab.o-warn, insn-output.o-warn, insn-emit.o-warn): Use
	-Wno-error instead of -Wno-implicit-fallthrough.

From-SVN: r240526

	PR bootstrap/77749
	* gcov-counter.def: Remove GCOV_COUNTER_V_DELTA.
	PR bootstrap/77749
	* Makefile.in: Remove _gcov_merge_delta.
	* libgcov-merge.c (void __gcov_merge_delta): Remove.
	* libgcov-util.c (__gcov_delta_counter_op): Remove.
	* libgcov.h: Remove declaration of __gcov_merge_delta.

From-SVN: r240524

	* combine.c (simplify_comparison): Add canonical FALLTHROUGH comments.
	* config/i386/i386.c (ix86_dep_by_shift_count_body): Add FALLTHROUGH
	comments.  Remove break after return.
	(ix86_fp_compare_code_to_integer, has_dispatch,
	ix86_simd_clone_usable): Remove break after return.

From-SVN: r240523

	PR fortran/77666
	* trans-openmp.c (gfc_omp_private_outer_ref): Return true even for
	references to allocatable arrays.

	* gfortran.dg/gomp/pr77666.f90: New test.

From-SVN: r240522

2016-09-27  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        PR rlt-optimization/77714
        * lra-eliminations.c (eliminate_regs_in_insn): Avoid alias on
        REG_EQUAL note.

From-SVN: r240518

gcc/ChangeLog:

2016-09-27  Kugan Vivekanandarajah  <kuganv@linaro.org>

	PR ipa/77677
	* ipa-prop.c (ipa_compute_jump_functions_for_edge): Use
	extract_range_from_unary_expr to convert value_range.
	* tree-vrp.c (extract_range_from_unary_expr_1): Rename to.
	(extract_range_from_unary_expr): This.
	* tree-vrp.h (extract_range_from_unary_expr): Declare.

gcc/testsuite/ChangeLog:

2016-09-27  Kugan Vivekanandarajah  <kuganv@linaro.org>

	PR ipa/77677
	* gcc.dg/torture/pr77677-2.c: New test.

From-SVN: r240517

LRA likes to use CTR and LR to store CCmode values.  Not such a good
idea.  All other similar patterns disparage using CTR and LR; do so
here, too.


	* config/rs6000/rs6000.md (movcc_internal1): Disparage using CTR or LR.

From-SVN: r240515

From-SVN: r240514

re PR libstdc++/77727 (Unwrapping std::optional constructor is not working for non-transferable object)

    PR libstdc++/77727
    * include/std/optional (optional(const optional<_Up>&)):
    Default-initialize the base and use emplace.
    (optional(optional<_Up>&&)): Likewise.
    * testsuite/20_util/optional/cons/77727.cc: New.

From-SVN: r240511

	* include/debug/safe_base.h
	(_Safe_iterator_base::_M_detach_single): Make public.

From-SVN: r240510

	gcc:
	* config/i386/i386.c (ix86_print_operand)
	[HAVE_AS_IX86_CMOV_SUN_SYNTAX]: Add gcc_fallthrough.
	* config/sparc/sparc.c (check_pic): Add fallthrough comment.
	(epilogue_renumber): Likewise.

	gcc/ada:
	* gcc-interface/decl.c: Fix fall through comment formatting.
	* gcc-interface/misc.c: Likewise.
	* gcc-interface/trans.c: Likewise.
	* gcc-interface/utils.c: Likewise.
	* gcc-interface/utils2.c: Likewise.

From-SVN: r240509

2016-09-26  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/77420
	* trans-common.c:  Handle array elements in equivalence when
	the lower and upper bounds of array spec are NULL.
 
2016-09-26  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/77420
	* gfortran.dg/pr77420_1.f90: New test.
	* gfortran.dg/pr77420_2.f90: Ditto.
	* gfortran.dg/pr77420_3.f90: New test. Requires ...
	* gfortran.dg/pr77420_4.f90: this file.

From-SVN: r240506

Fix PR77719
gcc/testsuite/ChangeLog:

2016-09-26  Kugan Vivekanandarajah  <kuganv@linaro.org>

	PR middle-end/77719
	* gfortran.dg/pr77719.f90: New test.

gcc/ChangeLog:

2016-09-26  Kugan Vivekanandarajah  <kuganv@linaro.org>

	PR middle-end/77719
	* tree-ssa-reassoc.c (make_new_ssa_for_def): Use gimple_get_lhs to get lhs
	instead of gimple_assign_lhs as stmt can be builtins too.

From-SVN: r240505

2016-09-26  Thomas Preud'homme  <thomas.preudhomme@arm.com>

    gcc/
    * tree.h (memmodel_from_int, memmodel_base, is_mm_relaxed,
    is_mm_consume, is_mm_acquire, is_mm_release, is_mm_acq_rel,
    is_mm_seq_cst, is_mm_sync): Move to ...
    * memmodel.h: This.  New file.
    * builtins.c: Include memmodel.h.
    * optabs.c: Likewise.
    * tsan.c: Likewise.
    * config/aarch64/aarch64.c: Likewise.
    * config/alpha/alpha.c: Likewise.
    * config/arm/arm.c: Likewise.
    * config/i386/i386.c: Likewise.
    * config/ia64/ia64.c: Likewise.
    * config/mips/mips.c: Likewise.
    * config/rs6000/rs6000.c: Likewise.
    * config/sparc/sparc.c: Likewise.
    * genconditions.c: Include memmodel.h in generated file.
    * genemit.c: Likewise.
    * genoutput.c: Likewise.
    * genpeep.c: Likewise.
    * genpreds.c: Likewise.
    * genrecog.c: Likewise.

    gcc/c-family/
    * c-common.c: Include memmodel.h.

From-SVN: r240504

2016-09-26  Thomas Preud'homme  <thomas.preudhomme@arm.com>

gcc/testsuite/
    * gcc.dg/tree-ssa/builtin-sprintf-warn-1.c: Adjust regex to accept
    singular form of byte when quantity is unknown.

From-SVN: r240503