2016-09-28  Richard Biener  <rguenther@suse.de>

	* dwarf2out.c (struct die_struct): Add removed flag.
	(lookup_type_die): If the DIE is marked as removed, clear
	TYPE_SYMTAB_DIE and return NULL.
	(lookup_decl_die): If the DIE is marked as removed, remove it
	from the hash and return NULL.
	(mark_removed): New helper.
	(prune_unused_types_prune): Call it for removed DIEs.
	(gen_subprogram_die): Move the premark_used_types call to after
	DIEs for the functions scopes are generated.
	(process_scope_var): Do not re-create pruned types or type decls.
	Make sure to also re-parent type decls.
	(dwarf2out_finish): Move unused type pruning and debug_types
	handling ...
	(dwarf2out_early_finish): ... here.

From-SVN: r240578

gcc/
2016-09-29  Claudiu Zissulescu  <claziss@synopsys.com>

	* config/arc/arc-c.c: New file.
	* config/arc/arc-c.def: Likewise.
	* config/arc/t-arc: Likewise.
	* config.gcc: Include arc-c.o as c and cpp object.
	* config/arc/arc-protos.h (arc_cpu_cpp_builtins): Add prototype.
	* config/arc/arc.h (TARGET_CPU_CPP_BUILTINS): Use
	arc_cpu_cpp_builtins.

From-SVN: r240577

2016-09-29  Claudiu Zissulescu  <claziss@synopsys.com>

	* config/arc/arc.md (*rotrsi3_cnt1): New pattern,
	(*ashlsi2_cnt1, *lshrsi3_cnt1, *ashrsi3_cnt1): Likewise.

From-SVN: r240576

2016-09-28  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        PR c++/77748
        * g++.dg/pr77550.C: Avoid undefined behavior.

From-SVN: r240573

2016-09-28  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * gcc.dg/tree-ssa/pr68198.c: Fix dg-final.

From-SVN: r240572

	* gimple-pretty-print.c (dump_gimple_call_args): Simplify "' "
	printing.

From-SVN: r240570

2016-09-28  Claudiu Zissulescu  <claziss@synopsys.com>

	* MAINTAINERS (Reviewers): Add myself.

From-SVN: r240569

Optimize strchr (s, 0) to s + strlen (s).  strchr (s, 0) appears a common
idiom for finding the end of a string, however it is not a very efficient
way of doing so.  Strlen is a much simpler operation which is significantly
faster (eg. on x86 strlen is 50% faster for strings of 8 bytes and about
twice as fast as strchr on strings of 1KB).

    gcc/
	* gimple-fold.c (gimple_fold_builtin_strchr):
	New function to optimize strchr (s, 0) to strlen.
	(gimple_fold_builtin): Add BUILT_IN_STRCHR case.

    testsuite/
	* gcc.dg/strlenopt-20.c: Update test.
	* gcc.dg/strlenopt-21.c: Likewise.
	* gcc.dg/strlenopt-22.c: Likewise.
	* gcc.dg/strlenopt-22g.c: Likewise.
	* gcc.dg/strlenopt-26.c: Likewise.
	* gcc.dg/strlenopt-5.c: Likewise.
	* gcc.dg/strlenopt-7.c: Likewise.
	* gcc.dg/strlenopt-9.c: Likewise.

From-SVN: r240568

	PR libstdc++/77686
	* include/std/functional (_Any_data): Add may_alias attribute.

From-SVN: r240567

Fix PR tree-optimization/77724

2016-09-27  Robin Dapp  <rdapp@linux.vnet.ibm.com>

        PR tree-optimization/77724
        * tree-vect-loop-manip.c (create_intersect_range_checks_index):
        Add tree_fits_shwi_p check.

From-SVN: r240565

From-SVN: r240564

From-SVN: r240563

    
    This is a step toward a version of mksysinfo that generates information
    for the runtime package.  This will be used to generate the
    runtime_sysinfo.go file, which is currently directly generated by a
    Makefile target.
    
    Reviewed-on: https://go-review.googlesource.com/29683

From-SVN: r240560

    
    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