2015-06-13  Tom de Vries  <tom@codesourcery.com>

	* testsuite/libgomp.c/parloops-exit-first-loop-alt-2.c: Add comment.
	* testsuite/libgomp.c/parloops-exit-first-loop-alt.c: Same.
	* testsuite/libgomp.c/parloops-exit-first-loop-alt-3.c: Add comment.
	(N): Define.
	(main): Use N instead of hardcoded constants.

	* gcc.dg/parloops-exit-first-loop-alt-2.c: Add comment.
	(main): Remove superfluous attributes.
	* gcc.dg/parloops-exit-first-loop-alt-3.c: Same.
	* gcc.dg/parloops-exit-first-loop-alt.c: Same.

From-SVN: r224452

gcc:
	PR bootstrap/66448
	* passes.c (rest_of_decl_compilation): Do not register globals for
	early debug if they are declared in built-ins.

From-SVN: r224451

From-SVN: r224450

	PR c++/65719
	* pt.c (tsubst_decl) [VAR_DECL]: Mark namespace-scope
	variables as DECL_NOT_REALLY_EXTERN.

From-SVN: r224442

From-SVN: r224431

	* ifcvt.c (noce_try_store_flag_constants): Use std::swap instead of
	manually swapping.
	(noce_try_cmove_arith): Likewise.
	(noce_get_alt_condition): Likewise.

From-SVN: r224429

From-SVN: r224425

From-SVN: r224416

	PR libstdc++/66464
	* src/c++11/codecvt.cc (codecvt_utf16_base<char32_t>::do_max_length):
	Return 4 not 3.

From-SVN: r224415

2015-06-12  Venkataramanan Kumar  <venkataramanan.kumar@amd.com>

        * common/config/i386/i386-common.c
        (OPTION_MASK_ISA_MWAITX_SET): New.
        (ix86_handle_option): Handle mwaitx.
        * config.gcc (i[34567]86-*-*): Add mwaitxintrin.h,
        (x86_64-*-*): Likewise.
        * config/i386/mwaitxintrin.h: New header.
        * config/i386/cpuid.h (bit_MWAITX):  Define.
        * config/i386/driver-i386.c (host_detect_local_cpu): Detect
        MWAITX support.
        * config/i386/i386.opt (mwaitx): New.
        * config/i386/i386-builtin-types.def
        (VOID_FTYPE_UNSIGNED_ UNSIGNED_UNSIGNED): New function type.
        * config/i386/i386-c.c: Define __MWAITX__ if needed.
        * config/i386/i386.c (ix86_target_string): Define -mmwaitx option.
        (PTA_MWAITX): New.
        (ix86_option_override_internal): Handle new option.
        (processor_alias_table): Added PTA_MWAITX.
        (ix86_valid_target_attribute_inner_p): Add OPT_mmwaitx.
        (ix86_builtins): Add IX86_BUILTIN_MWAITX, IX86_BUILTIN_MONITORX.
        (ix86_expand_builtin): Handle IX86_BUILTIN_MWAITX and
        IX86_BUILTIN_MONITORX  built-ins.
        * config/i386/i386.h (TARGET_MWAITX): New.
        * config/i386/i386.md (unspecv): Add UNSPEC_MWAITX and
        UNSPEC_MONITORX.
        (mwaitx):  New pattern.
        (monitorx_<mode>): New pattern.
        * config/i386/x86intrin.h: Include mwaitxintrin.h.
        * doc/extend.texi: Document monitorx and mwaitx builtins.
        * doc/invoke.texi: Document -mmwaitx option.

gcc/testsuite

2015-06-12  Venkataramanan Kumar  <venkataramanan.kumar@amd.com>

        * gcc.target/i386/monitorx.c: New.
        * gcc.target/i386/sse-12.c: Add -mmwaitx.
        * gcc.target/i386/sse-13.c: Ditto.
        * gcc.target/i386/sse-14.c: Ditto.
        * gcc.target/i386/sse-22.c: Ditto.
        * gcc.target/i386/sse-23.c: Ditto.
        * g++.dg/other/i386-2.C: Ditto.
        * g++.dg/other/i386-3.C: Ditto.

From-SVN: r224414

The PowerPC, AIX, Alpha, IA64  implementations of atomic_word.h are in no
way different from what can be achieved with the generic rewrite in
Patch 1 of this series - delete these.

2015-06-12  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>

        * config/cpu/alpha/atomic_word.h: Remove.
        * config/cpu/ia64/atomic_word.h: Remove.
        * config/cpu/powerpc/atomic_word.h: Remove.
        * config/os/aix/atomic_word.h: Remove.
        * configure.host (atomic_word_dir) [ia64, aix*, powerpc, alpha]:
        Use generic definition.

From-SVN: r224413

The PowerPC, AIX, Alpha, IA64  implementations of atomic_word.h are in no
way different from what can be achieved with the generic rewrite in
Patch 1 of this series - delete these.

2015-06-12  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>

        * config/cpu/alpha/atomic_word.h: Remove.
        * config/cpu/ia64/atomic_word.h: Remove.
        * config/cpu/powerpc/atomic_word.h: Remove.
        * config/os/aix/atomic_word.h: Remove.
        * configure.host (atomic_word_dir) [ia64, aix*, powerpc, alpha]:
        Use generic definition.

From-SVN: r224412

This provides proper definitions for _GLIBCXX_READ_MEM_BARRIER and
_GLIBCXX_WRITE_MEM_BARRIER, rewrites the guards in terms of proper
atomic extensions and removes internal uses of
_GLIBCXX_READ_MEM_BARRIER and _GLIBCXX_WRITE_MEM_BARRIER and replaces
them with equivalent atomics.

2015-06-12  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>

	PR target/66200
	PR c++/66192
	* * config/cpu/generic/atomic_word.h (_GLIBCXX_READ_MEM_BARRIER): Define
        (_GLIBCXX_WRITE_MEM_BARRIER): Likewise
        * include/bits/shared_ptr_base.h: Use ACQ_REL barrier.
        * include/ext/atomicity.h: Likewise.
        * include/tr1/shared_ptr.h: Likewise.
        * libsupc++/guard.cc (__test_and_acquire): Rewrite with atomics.
        Update comment.
        (__set_and_release): Likewise.
        * testsuite/20_util/shared_ptr/cons/43820_neg.cc (test01): Adjust for
	line numbers.
        * testsuite/20_util/shared_ptr/cons/void_neg.cc: Likewise.
        * testsuite/tr1/2_general_utilities/shared_ptr/cons/43820_neg.cc:
	Likewise.

From-SVN: r224411

	* emit-rtl.c (need_atomic_barrier_p): Mask model with
	MEMMODEL_BASE_MASK.  Remove MEMMODEL_SYNC_* cases.

From-SVN: r224410

* lto-lang.c (lto_type_for_size): Include intN types.
(lto_type_for_mode): Likewise.

From-SVN: r224408

* dbxout.c (xcoff_debug_hooks): Provide a function for
register_main_translation_unit hook.

From-SVN: r224407

From-SVN: r224406

2015-06-11  Martin Sebor  <msebor@redhat.com>

	PR sanitizer/65479
	* dwarf.c (struct line): Add new field idx.
	(line_compare): Use it.
	(add_line): Set it.
	(read_line_info): Reset it.

From-SVN: r224402

       * config/rs6000/rs6000.c (rs6000_pre_atomic_barrier): Remove SYNC
        variants cases from switch.
        (rs6000_post_atomic_barrier): Same.
        (rs6000_expand_atomic_compare_and_swap): Use memmodel_base.
        (rs6000_expand_atomic_exchange): Same.
        (rs6000_expand_atomic_op): Same.
        * config/rs6000/sync.md (mem_thread_fence): Use memodel_base. Remove
        SYNC variants cases from switch.
        (atomic_load): Same.
        (atomic_store): Same.

From-SVN: r224401

	* include/std/tuple (__is_tuple_like_impl): Disambiguate array in
	debug and profile modes.
	* testsuite/25_algorithms/headers/algorithm/synopsis.cc: Adjust tests
	for swap in C++11 and later.

From-SVN: r224397

	* config/pa/pa.c (pa_output_global_address): Handle LABEL_REF plus
	CONST_INT for goto.

From-SVN: r224396

2015-06-11  Steve Ellcey  <sellcey@imgtec.com>

	* gcc.dg/tree-prof/stringop-2.c: Fix ifdef __mips.

From-SVN: r224394

	PR bootstrap/66448
	* dwarf2out.c (check_die): Check for common duplicate attributes.
	(add_location_or_const_value_attribute): Do not add duplicate
	attributes.
	(gen_formal_parameter_die): Do not add DW_AT_artificial the second
	time around.
	(gen_struct_or_union_type_die): Bail early if TREE_ASM_WRITTEN.
	(gen_type_die_with_usage): Call check_die.
	(dwarf2out_decl): Only call check_die() when ENABLE_CHECKING.

From-SVN: r224393

	* dwarf2out.c (prune_unused_types): Handle unused top-level limbo
	dies.

From-SVN: r224391

From-SVN: r224390

From-SVN: r224387

	PR bootstrap/66252
	* config/sparc/sparc.c (hard_regno_mode_classes): Add ??? comment.
	* config/sparc/sparc.md (zero_extendsidi2_insn_sp32): Use single order.
	(*addx_extend_sp32): Fix pasto.
	(*subx_extend): Rename into...
	(*subx_extend_sp32): ...this.
	(*adddi3_extend_sp32): Add earlyclobber.
	(*subdi3_insn_sp32): Likewise.
	(*subdi3_extend_sp32): Likewise.
	(*and_not_di_sp32): Likewise.
	(*or_not_di_sp32): Likewise.
	(*xor_not_di_sp32): Likewise.
	(*negdi2_sp32): Likewise.
	(*one_cmpldi2_sp32): Likewise.

From-SVN: r224384

2015-06-11  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/66079
	* trans-expr.c (gfc_conv_procedure_call): Allocatable scalar
	function results must be freed and nullified after use. Create
	a temporary to hold the result to prevent duplicate calls.
	* trans-stmt.c (gfc_trans_allocate): Rename temporary variable
	as 'source'. Deallocate allocatable components of non-variable
	'source's.

2015-06-11  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/66079
	* gfortran.dg/allocatable_scalar_13.f90: New test

From-SVN: r224383

	PR c++/66445
	* constexpr.c (potential_constant_expression_1): Handle a
	DECL_EXPR of TYPE_DECL.

From-SVN: r224382

re PR c++/66450 ([C++11][constexpr] Issues when delegating implicit copy constructor in constexpr function)

	PR c++/66450
	* constexpr.c (cxx_eval_store_expression): Avoid messing up outer
	ctx->ctor.

From-SVN: r224381

PR debug/66503

gcc/ChangeLog:
	* debug.h (struct gcc_debug_hooks): Add a
	register_main_translation_unit hook.
	* debug.c (do_nothing_debug_hooks): Provide a function for this
	new hook.
	* dbxout.c (dbx_debug_hooks): Likewise.
	* sdbout.c (sdb_debug_hooks): Likewise.
	* vmsdbgout.c (vmsdbg_debug_hooks): Likewise.
	* dwarf2out.c (main_translation_unit): New global variable.
	(dwarf2out_register_main_translation_unit): New function
	implementing the new hook.
	(dwarf2_debug_hooks): Assign
	dwarf2out_register_main_translation_unit to this new hook.
	(dwarf2out_init): Associate any main translation unit to
	comp_unit_die ().
	* c/c-decl.c (pop_scope): Register the main translation unit
	through the new debug hook.
	* cp/decl.c (cxx_init_decl_processing): Likewise.

gcc/ada/ChangeLog:
	* gcc-interface/utils.c (get_global_context): Register the main
	translation unit through the new debug hook.

gcc/fortran/ChangeLog:
	* f95-lang.c (gfc_create_decls): Register the main translation
	unit through the new debug hook.

From-SVN: r224371

	* match.pd ((x & y) ^ (x | y) -> x ^ y): New pattern.

	* gcc.dg/fold-xor-3.c: New test.

From-SVN: r224370

From-SVN: r224368

	* config/arm/arm.c (arm_option_params_internal): When optimising
	for speed set max_insns_skipped when arm_restrict_it.

	* gcc.target/arm/short-it-ifcvt-1.c: New test.
	* gcc.target/arm/short-it-ifcvt-2.c: Likewise.

From-SVN: r224367

From-SVN: r224366

	PR target/52144
	* config/arm/arm-c.c (arm_cpu_cpp_builtins): Conditionally define
	 macros in ...
	(arm_cpu_builtins): New function.
	(arm_pragma_target_parse): Call arm_cpu_builtins.
	* config/arm/arm-protos.h (arm_cpu_builtins): Declare.
	(arm_register_target_pragmas): Likewise.
	* config/arm/arm.h (REGISTER_TARGET_PRAGMAS):
	 Call arm_register_target_pragmas.
	* config/arm/arm-c.c (arm_register_target_pragmas): New function.
	(arm_pragma_target_parse): Likewise.

	PR target/52144
	* gcc.target/arm/pragma_attribute.c: New test.

From-SVN: r224365

From-SVN: r224363

* config/sh/sh.md (tstsi_t): Add '?' modifier to 'r' alternative of
  the 2nd operand to fix failures for gcc.target/sh/pr49263-2.c with -mlra.

From-SVN: r224349

	* g++.dg/abi/mangle-regparm.C (dg-optiond): Add -save-temps.

From-SVN: r224341

	PR target/66473
	* config/i386/i386.c (ix86_expand_vector_set): Use gen_int_mode
	to prepare mask operand for AVX512 modes.

testsuite/ChangeLog:

	PR target/66473
	* gcc.target/i386/pr66473.c: New test.

From-SVN: r224340