* doc/xml/faq.xml: Add link.
	* doc/xml/manual/backwards_compatibility.xml: Remove outdated
	information on pre-ISO headers. Replace broken link to C++ FAQ Lite.
	* doc/xml/manual/io.xml: Update broken link.
	* doc/html/*: Regenerate.

From-SVN: r246425

2017-03-23  Daniel Kruegler  <daniel.kruegler@gmail.com>

	Implement LWG 2686, Why is std::hash specialized for error_code,
	but not error_condition?
	* include/std/system_error (hash<error_condition>): Define for C++17.
	* testsuite/20_util/hash/operators/size_t.cc (hash<error_condition>):
	Instantiate test for error_condition.
	* testsuite/20_util/hash/requirements/explicit_instantiation.cc
	(hash<error_condition>): Instantiate hash<error_condition>.

From-SVN: r246424

2017-03-23  Daniel Kruegler  <daniel.kruegler@gmail.com>

	* include/bits/c++config (_GLIBCXX17_INLINE): Define.
	* include/bits/regex_constants.h (All std::regex_constants constants):
	Add _GLIBCXX17_INLINE as per P0607R0.
	* include/bits/std_mutex.h (defer_lock, try_to_lock, adopt_lock):
	Likewise.
	* include/bits/stl_pair.h (piecewise_construct): Likewise.
	* include/bits/uses_allocator.h (allocator_arg, uses_allocator_v)
	(__is_uses_allocator_constructible_v)
	(__is_nothrow_uses_allocator_constructible_v): Likewise.
	* include/std/chrono (treat_as_floating_point_v): Likewise.
	* include/std/functional (is_bind_expression_v, is_placeholder_v):
	Likewise.
	* include/std/optional (nullopt): Likewise.
	* include/std/ratio (ratio_equal_v, ratio_not_equal_v, ratio_less_v)
	ratio_less_equal_v, ratio_greater_v, ratio_greater_equal_v): Likewise.
	* include/std/system_error (is_error_code_enum_v)
	(is_error_condition_enum_v): Likewise.
	* include/std/tuple (tuple_size_v, ignore): Likewise.
	(ignore): Declare ignore constexpr as per LWG 2773, declare assignment
	constexpr as per LWG 2933.
	* include/std/type_traits (All variable templates): Add
	_GLIBCXX17_INLINE as per P0607R0.
	* include/std/variant (variant_size_v, variant_npos, __index_of_v)
	(__tuple_count_v, __exactly_once): Likewise.
	* testsuite/18_support/headers/new/synopsis.cc
	(hardware_destructive_interference_size)
	(hardware_constructive_interference_size): Likewise for commented-out
	variables.
	* testsuite/20_util/tuple/creation_functions/constexpr.cc: Add new
	test function for constexpr std::ignore (LWG 2773).
	* testsuite/20_util/tuple/creation_functions/constexpr_cpp14.cc: New
	test for LWG 2933.

From-SVN: r246423

	* pt.c (try_one_overload): Remove asserts.

From-SVN: r246422

	PR target/71436
	* config/arm/arm.md (*load_multiple): Add reload_completed to
	matching condition.

	* gcc.c-torture/compile/pr71436.c: New test.

From-SVN: r246419

[gcc]

2017-03-23  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>
            Richard Biener  <rguenth@suse.com>

	PR tree-optimization/79908
	PR tree-optimization/80136
	* tree-stdarg.c (expand_ifn_va_arg_1): For a VA_ARG whose LHS has
	been cast away, gimplify_and_add suffices.

[gcc/testsuite]

2017-03-23  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>
            Richard Biener  <rguenther@suse.de>

	PR tree-optimization/79908
	PR tree-optimization/80136
	* gcc.dg/torture/pr79908.c: New file.

From-SVN: r246418

	* call.c (convert_like_real): Use LOOKUP_IMPLICIT.

From-SVN: r246417

	* c-tree.h: Remove a C_RID_YYCODE reference.

	* cp-tree.h: Remove a C_RID_YYCODE reference.

From-SVN: r246416

	* tree-vrp.c (identify_jump_threads): Delete avail_exprs.

From-SVN: r246415

2017-03-23  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/80032
	* gimplify.c (gimple_push_cleanup): Forced unconditional
	cleanups still have to go to the conditional_cleanups
	sequence.

From-SVN: r246414

From-SVN: r246413

    
    Patch by Andrwas Schwab.
    
    Reviewed-on: https://go-review.googlesource.com/38456

From-SVN: r246410

2017-03-22  Dominique d'Humieres  <dominiq@lps.ens.fr>

	PR fortran/79838
	* module.c: Remove trailing period.

From-SVN: r246409

re PR tree-optimization/80072 (ICE in gimple_build_assign_1 with -O3 -march=broadwell/skylake-avx512)

	PR tree-optimization/80072
	* tree-ssa-reassoc.c (struct operand_entry): Change id field type
	to unsigned int.
	(next_operand_entry_id): Change type to unsigned int.
	(sort_by_operand_rank): Make sure to return the right return value
	even if unsigned fields are bigger than INT_MAX.
	(struct oecount): Change cnt and id type to unsigned int.
	(oecount_hasher::equal): Formatting fix.
	(oecount_cmp): Make sure to return the right return value
	even if unsigned fields are bigger than INT_MAX.
	(undistribute_ops_list): Change next_oecount_id type to unsigned int.

From-SVN: r246408

    
    A couple of the data members in the Gogo class were not
    being initialized properly. This was causing "uninitialized value"
    errors during Valgrind memcheck runs. This patch insures that
    all of the fields receive an initial value.
    
    Reviewed-on: https://go-review.googlesource.com/38470

From-SVN: r246407

2017-03-12 Nicolas Koenig <koenigni@student.ethz.ch>

	PR fortran/39239
	fortran/Changelog:  Add entry for rev. 246284.

From-SVN: r246406

2017-03-22 Nicolas Koenig <koenigni@student.ethz.ch>

	PR fortran/39239
	* gfortran.dg/equiv_constraint_bind_c.f90: New test.

From-SVN: r246405

2017-03-21  Nicolas Koenig  <koenigni@student.ethz.ch>

	* fortran/ChangeLog: Add forgotten entry for r246322.
	* testsuite/ChangeLog: Likewise.

From-SVN: r246404

	PR c++/80141
	* semantics.c (finish_omp_clause) <case OMP_CLAUSE_SIMDLEN,
	case OMP_CLAUSE_ALIGNED>: Call maybe_constant_value only when not
	processing_template_decl.

	* g++.dg/gomp/pr80141.C: New test.

From-SVN: r246403

	PR sanitizer/78158
	* tsan/tsan_interface_atomic.cc: Cherry-pick upstream r298378.

From-SVN: r246402

	PR c++/80129
	* gimplify.c (gimplify_modify_expr_rhs) <case COND_EXPR>: Clear
	TREE_READONLY on result if writing it more than once.

	* g++.dg/torture/pr80129.C: New test.

From-SVN: r246401

	PR sanitizer/80110
	* doc/invoke.texi (-fsanitize=thread): Document that with
	-fnon-call-exceptions atomics are not able to throw
	exceptions.

From-SVN: r246400

	PR sanitizer/80110
	* tsan.c: Include tree-eh.h.
	(instrument_builtin_call): Call maybe_clean_eh_stmt or
	maybe_clean_or_replace_eh_stmt where needed.
	(instrument_memory_accesses): Add cfg_changed argument.
	Call gimple_purge_dead_eh_edges on each block and set *cfg_changed
	if it returned true.
	(tsan_pass): Adjust caller.  Return TODO_cleanup_cfg if cfg_changed.

	* g++.dg/tsan/pr80110.C: New test.

From-SVN: r246399

re PR rtl-optimization/63191 (32-bit gcc uses excessive memory during dead store elimination with -fPIC)

	PR rtl-optimization/63191
	* config/i386/i386.c (ix86_delegitimize_address): Turn into small
	wrapper function, moved the whole old content into ...
	(ix86_delegitimize_address_1): ... this.  New inline function.
	(ix86_find_base_term): Use ix86_delegitimize_address_1 with
	true as last argument instead of ix86_delegitimize_address.

From-SVN: r246398

In  https://gcc.gnu.org/ml/gcc-patches/2015-11/msg01639.html James determined
the best value for AArch64 code generation.  Although this setting is used when
explicitly targeting Cortex cores, it is not otherwise used.  This means by
default GCC will not use (F)CSEL in many common cases. 

Change the generic_branch_cost to be the same as cortexa57_branch_cost so that
all supported cores benefit from CSEL.  This is generally faster and smaller.
On one benchmark the new setting fixes a regression since GCC6 and improves
performance by 49%.

    gcc/
	* config/aarch64/aarch64.c (generic_branch_cost):
	Copy cortexa57_branch_cost.

From-SVN: r246397

	* configure.ac: Enable LTO by default on darwin >= 9.
	* configure: Regenerate.

From-SVN: r246396

Many supported cores implement fusion of AES instructions.  When fusion
happens it can give a significant performance gain.  If not, scheduling
fusion candidates next to each other has almost no effect on performance.
Due to the high benefit/low cost it makes sense to enable AES fusion with
-mcpu=generic so that cores that support it always benefit.

    gcc/
	* config/aarch64/aarch64.c (generic_tunings): Add AES fusion.

From-SVN: r246395

2017-03-21  Aaron Sawdey  <acsawdey@linux.vnet.ibm.com>

	PR target/80123
	* doc/md.texi (Constraints): Document wA constraint.
	* config/rs6000/constraints.md (wA): New.
	* config/rs6000/rs6000.c (rs6000_debug_reg_global): Add wA reg_class.
	(rs6000_init_hard_regno_mode_ok): Init wA constraint.
	* config/rs6000/rs6000.h (RS6000_CONSTRAINT_wA): New.
	* config/rs6000/vsx.md (vsx_splat_<mode>): Use wA constraint.

From-SVN: r246394

2017-03-22  Dominique d'Humieres  <dominiq@lps.ens.fr>

	PR fortran/79602
	* decl.c: Replace '%s' with %qs.
	* expr.c: Likewise.
	* interface.c: Likewise.
	* match.c: Likewise.
	* primary.c: Likewise.
	* resolve.c: Likewise.

	PR fortran/79844
	PR fortran/80011
	* io.c: Remove trailing spaces.
	* match.c: Likewise.
	* openmp.c: Likewise.
	* resolve.c: Likewise.
	* trans-intrinsic.c: Likewise.

	PR fortran/79853
	* expr.c: Remove a double spaces.

	PR fortran/79859
	* primary.c: Remove spurious quotes around %qs.

From-SVN: r246391

	* include/bits/shared_ptr.h (shared_ptr, weak_ptr): Add deduction
	guides for C++17.
	* include/bits/std_function.h (function): Likewise.
	* include/bits/stl_pair.h (pair): Likewise.
	* include/debug/array (__gnu_debug::array): Likewise.
	* include/std/array (array): Likewise.
	* include/std/functional (make_default_searcher)
	(make_boyer_moore_searcher, make_boyer_moore_horspool_searcher):
	Remove generator functions.
	* include/std/tuple (tuple): Add deduction guides.
	* include/std/valarray (valarray): Likewise.
	* testsuite/20_util/function_objects/searchers.cc: Adjust to use
	class template argument deduction instead of generator functions.
	* testsuite/20_util/function/cons/deduction.cc: New test.
	* testsuite/20_util/optional/cons/deduction_guide.cc: Rename to ...
	* testsuite/20_util/optional/cons/deduction.cc: ... here.
	* testsuite/20_util/pair/cons/deduction.cc: New test.
	* testsuite/20_util/shared_ptr/cons/deduction.cc: New test.
	* testsuite/20_util/tuple/cons/deduction.cc: New test.
	* testsuite/20_util/tuple/element_access/get_neg.cc: Adjust dg-error.
	* testsuite/20_util/unique_ptr/cons/deduction_neg.cc: New test.
	* testsuite/20_util/weak_ptr/cons/deduction.cc: New test.
	* testsuite/23_containers/array/cons/deduction.cc: New test.
	* testsuite/23_containers/array/cons/deduction_neg.cc: New test.
	* testsuite/23_containers/array/tuple_interface/get_debug_neg.cc:
	Adjust dg-error.
	* testsuite/23_containers/array/tuple_interface/get_neg.cc: Likewise.
	* testsuite/23_containers/array/tuple_interface/tuple_element_neg.cc:
	Likewise.
	* testsuite/26_numerics/valarray/deduction.cc: New test.
	* testsuite/30_threads/lock_guard/cons/deduction.cc: New test.
	* testsuite/30_threads/scoped_lock/cons/deduction.cc: New test.
	* testsuite/30_threads/unique_lock/cons/deduction.cc: New test.

From-SVN: r246389

2017-03-22  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/80142
	* frontend-passes.c (combine_array_constructor): Take
	location of new expression from constructor expression instead
	of constructor.

2017-03-22  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/80142
	* gfortran.dg/any_loc.f90: New test case.

From-SVN: r246388

re PR go/80128 (go1: internal compiler error: in write_specific_type_functions, at go/gofrontend/types.cc:2002)

	PR go/80128
    compiler: check backend alignment for memequalNN functions
    
    The code was assuming the usual required alignment for the memequalNN
    functions (16 bits for int16, 32 for int32, etc.). However, on m68k
    the required alignment of int32 is only 16 bits. Assuming the
    memequalNN alignment caused the compiler to incorrectly decide that
    int32 required a specially generated function rather than calling
    memequal32. This then crashed if the type descriptor were generated
    after type-specific functions had been written.
    
    Fixes GCC PR 80128.
    
    Reviewed-on: https://go-review.googlesource.com/38433

From-SVN: r246382

	PR c++/80029

	gcc/
	* gimplify.c (is_oacc_declared): New function.
	(oacc_default_clause): Use it to set default flags for acc declared
	variables inside parallel regions.
	(gimplify_scan_omp_clauses): Strip firstprivate pointers for acc
	declared variables.
	(gimplify_oacc_declare): Gimplify the declare clauses.  Add the
	declare attribute to any decl as necessary.

	libgomp/
	* testsuite/libgomp.oacc-c-c++-common/declare-vla.c: New test.

From-SVN: r246381

2017-03-22  Thomas Preud'homme  <thomas.preudhomme@arm.com>

    gcc/
    PR target/80082
    * config/arm/arm-isa.h (isa_bit_lpae): New feature bit.
    (ISA_ARMv7ve): Add isa_bit_lpae to the definition.
    * config/arm/arm-protos.h (arm_arch7ve): Rename into ...
    (arm_arch_lpae): This.
    * config/arm/arm.c (arm_arch7ve): Rename into ...
    (arm_arch_lpae): This.  Define it in term of isa_bit_lpae.
    * config/arm/arm.h (TARGET_HAVE_LPAE): Redefine in term of
    arm_arch_lpae.

    gcc/testsuite/
    PR target/80082
    * gcc.target/arm/atomic_loaddi_10.c: New testcase.
    * gcc.target/arm/atomic_loaddi_11.c: Likewise.

From-SVN: r246365

2017-03-22  Martin Liska  <mliska@suse.cz>

	PR target/79906
	* config/rs6000/rs6000.c (rs6000_inner_target_options): Show
	error message instead of an ICE.
2017-03-22  Martin Liska  <mliska@suse.cz>

	PR target/79906
	* g++.dg/ext/mv8.C: Add power* targets.

From-SVN: r246345

2017-03-21  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	* doc/extend.texi (6.11 Additional Floating Types): Revise.

From-SVN: r246343

From-SVN: r246342

gcc/ChangeLog:

2017-03-21  Kelvin Nilsen  <kelvin@gcc.gnu.org>

	* config/rs6000/rs6000-c.c (rs6000_target_modify_macros): Add
	comments.
	* config/rs6000/rs6000.c (rs6000_option_override_internal): Add
	comments.

From-SVN: r246339

gcc/c-family/ChangeLog:

	PR c++/79548
	* c-common.c (set_underlying_type): Mark type used only when
	original del is declared unused.

gcc/testsuite/ChangeLog:

	PR c++/79548
	* g++.dg/warn/Wunused-var-26.C: New test.

From-SVN: r246335

gcc/ChangeLog:
	* doc/extend.texi: Use "cannot" instead of "can't."
	* doc/hostconfig.texi: Same.
	* doc/install.texi: Same.
	* doc/invoke.texi: Same.
	* doc/loop.texi: Same.
	* doc/md.texi: Same.
	* doc/objc.texi: Same.
	* doc/rtl.texi: Same.
	* doc/tm.texi: Same.
	* doc/tm.texi.in: Same.
	* doc/trouble.texi: Same.

From-SVN: r246334