With PTX_MAX_VECTOR_LENGTH set to larger than PTX_WARP_SIZE, routines can be
called from offloading regions with vector-size set to larger than warp size.
OTOH, vector-partitionable routines assume warp-sized vector length.

Detect if we're calling a vector-partitionable routine from an offloading
region, and if so, fall back to warp-sized vector length in that region.

2019-01-07  Tom de Vries  <tdevries@suse.de>

	PR target/85486
	* config/nvptx/nvptx.c (has_vector_partitionable_routine_calls_p): New
	function.
	(nvptx_goacc_validate_dims): Force vl32 if calling vector-partitionable
	routines.

From-SVN: r267640

sse.md (vec_extract<mode><ssehalfvecmodelower>): Use V_256_512 iterator instead of V_512 and TARGET_AVX instead of...

	* config/i386/sse.md (vec_extract<mode><ssehalfvecmodelower>): Use
	V_256_512 iterator instead of V_512 and TARGET_AVX instead of
	TARGET_AVX512F as condition.

From-SVN: r267639

	PR debug/88723
	* dwarf2out.c (const_ok_for_output_1): Remove redundant call to
	const_not_ok_for_debug_p target hook.
	(mem_loc_descriptor) <case UNSPEC>: Only call const_ok_for_output_1
	on UNSPEC and subexpressions thereof if all subexpressions of the
	UNSPEC are CONSTANT_P.

From-SVN: r267638

	PR tree-optimization/88676
	* tree-ssa-phiopt.c (two_value_replacement): New function.
	(tree_ssa_phiopt_worker): Call it.

	* gcc.dg/tree-ssa/pr88676.c: New test.
	* gcc.dg/pr88676.c: New test.
	* gcc.dg/tree-ssa/pr15826.c: Just verify there is no goto,
	allow &.

From-SVN: r267634

	PR sanitizer/88619
	* cfgexpand.c (expand_stack_vars): Only align prev_offset to
	ASAN_MIN_RED_ZONE_SIZE, not to maximum of that and alignb.

	* c-c++-common/asan/pr88619.c: New test.

From-SVN: r267633

	PR c++/85052
	* tree-vect-generic.c: Include insn-config.h and recog.h.
	(expand_vector_piecewise): Add defaulted ret_type argument,
	if non-NULL, use that in preference to type for the result type.
	(expand_vector_parallel): Formatting fix.
	(do_vec_conversion, do_vec_narrowing_conversion,
	expand_vector_conversion): New functions.
	(expand_vector_operations_1): Call expand_vector_conversion
	for VEC_CONVERT ifn calls.
	* internal-fn.def (VEC_CONVERT): New internal function.
	* internal-fn.c (expand_VEC_CONVERT): New function.
	* fold-const-call.c (fold_const_vec_convert): New function.
	(fold_const_call): Use it for CFN_VEC_CONVERT.
	* doc/extend.texi (__builtin_convertvector): Document.
c-family/
	* c-common.h (enum rid): Add RID_BUILTIN_CONVERTVECTOR.
	(c_build_vec_convert): Declare.
	* c-common.c (c_build_vec_convert): New function.
c/
	* c-parser.c (c_parser_postfix_expression): Parse
	__builtin_convertvector.
cp/
	* cp-tree.h (cp_build_vec_convert): Declare.
	* parser.c (cp_parser_postfix_expression): Parse
	__builtin_convertvector.
	* constexpr.c: Include fold-const-call.h.
	(cxx_eval_internal_function): Handle IFN_VEC_CONVERT.
	(potential_constant_expression_1): Likewise.
	* semantics.c (cp_build_vec_convert): New function.
	* pt.c (tsubst_copy_and_build): Handle CALL_EXPR to
	IFN_VEC_CONVERT.
testsuite/
	* c-c++-common/builtin-convertvector-1.c: New test.
	* c-c++-common/torture/builtin-convertvector-1.c: New test.
	* g++.dg/ext/builtin-convertvector-1.C: New test.
	* g++.dg/cpp0x/constexpr-builtin4.C: New test.

From-SVN: r267632

Add support for vector reductions with openacc vector_length larger than
warp-size.

2019-01-07  Tom de Vries  <tdevries@suse.de>

	* config/nvptx/nvptx-protos.h (nvptx_output_red_partition): Declare.
	* config/nvptx/nvptx.c (vector_red_size, vector_red_align,
	vector_red_partition, vector_red_sym): New global variables.
	(nvptx_option_override): Initialize vector_red_sym.
	(nvptx_declare_function_name): Restore red_partition register.
	(nvptx_file_end): Emit code to declare the vector reduction variables.
	(nvptx_output_red_partition): New function.
	(nvptx_expand_shared_addr): Add vector argument. Use it to handle
	large vector reductions.
	(enum nvptx_builtins): Add NVPTX_BUILTIN_VECTOR_ADDR.
	(nvptx_init_builtins): Add VECTOR_ADDR.
	(nvptx_expand_builtin): Update call to nvptx_expand_shared_addr.
	Handle nvptx_expand_shared_addr.
	(nvptx_get_shared_red_addr): Add vector argument and handle large
	vectors.
	(nvptx_goacc_reduction_setup): Add offload_attrs argument and handle
	large vectors.
	(nvptx_goacc_reduction_init): Likewise.
	(nvptx_goacc_reduction_fini): Likewise.
	(nvptx_goacc_reduction_teardown): Likewise.
	(nvptx_goacc_reduction): Update calls to nvptx_goacc_reduction_{setup,
	init,fini,teardown}.
	(nvptx_init_axis_predicate): Initialize vector_red_partition.
	(nvptx_set_current_function): Init vector_red_partition.
	* config/nvptx/nvptx.md (UNSPECV_RED_PART): New unspecv.
	(nvptx_red_partition): New insn.
	* config/nvptx/nvptx.h (struct machine_function): Add red_partition.

From-SVN: r267631

When compiling an empty loop:
...
  long long v1;
  #pragma acc parallel num_gangs (640) num_workers(1) vector_length (128)
  #pragma acc loop
    for (v1 = 0; v1 < 20; v1 += 2)
        ;
...
the compiler emits two subsequent bar.syncs.  This triggers some bug on my
quadro m1200 (I'm assuming in the ptxas/JIT compiler) that hangs the testcase.

This patch works around the bug by doing an optimization: we detect that this is
an empty loop (a forked immediately followed by a joining), and don't emit the
barriers.

The patch does not include the test-case yet, since vector_length (128) is not
yet supported at this point.

2019-01-07  Tom de Vries  <tdevries@suse.de>

	PR target/85381
	* config/nvptx/nvptx.c (nvptx_process_pars): Don't emit barriers for
	empty loops.

From-SVN: r267630

Add support for a per-worker broadcast buffer and barrier, to be used for
openacc vector_length larger than warp-size.

2019-01-07  Tom de Vries  <tdevries@suse.de>

	* config/nvptx/nvptx.c (oacc_bcast_partition): Declare.
	(nvptx_option_override): Init oacc_bcast_partition.
	(nvptx_init_oacc_workers): New function.
	(nvptx_declare_function_name): Call nvptx_init_oacc_workers.
	(nvptx_needs_shared_bcast): New function.
	(nvptx_find_par): Generalize to enable vectors to use shared-memory
	to propagate state.
	(nvptx_shared_propagate): Initialize vector bcast partition and
	synchronization state.
	(nvptx_single):  Generalize to enable vectors to use shared-memory
	to propagate state.
	(nvptx_process_pars): Likewise.
	(nvptx_set_current_function): Initialize oacc_broadcast_partition.
	* config/nvptx/nvptx.h (struct machine_function): Add
	bcast_partition and sync_bar members.

From-SVN: r267629

Allow PTX_MAX_VECTOR_LENGTH to be define as larger than PTX_WARP_SIZE in
nvptx_goacc_validate_dims_1.

2019-01-07  Tom de Vries  <tdevries@suse.de>

	* config/nvptx/nvptx.c (nvptx_welformed_vector_length_p)
	(nvptx_apply_dim_limits): New function.
	(nvptx_goacc_validate_dims_1): Allow PTX_MAX_VECTOR_LENGTH larger than
	PTX_WARP_SIZE.

From-SVN: r267628

Move warnings in nvptx_goacc_validate_dims_1 to as late as possible.  This
allows us more flexibility in setting the dimensions.

2019-01-07  Tom de Vries  <tdevries@suse.de>

	* config/nvptx/nvptx.c (nvptx_goacc_validate_dims_1): Move warnings to
	as late as possible.

From-SVN: r267627

Remove PTX_VECTOR_LENGTH and replace uses of it with PTX_DEFAULT_VECTOR_LENGTH,
PTX_MAX_VECTOR_LENGTH and PTX_WARP_SIZE.

2019-01-07  Tom de Vries  <tdevries@suse.de>

	* config/nvptx/nvptx.c (PTX_VECTOR_LENGTH): Remove.
	(PTX_DEFAULT_VECTOR_LENGTH, PTX_MAX_VECTOR_LENGTH): Define.
	(nvptx_goacc_validate_dims_1, nvptx_dim_limit)
	(nvptx_goacc_reduction_fini): Use PTX_DEFAULT_VECTOR_LENGTH,
	PTX_MAX_VECTOR_LENGTH and PTX_WARP_SIZE instead of PTX_VECTOR_LENGTH.

From-SVN: r267626

Add a few asserts to nvptx_goacc_validate_dims.

2019-01-07  Tom de Vries  <tdevries@suse.de>

	* config/nvptx/nvptx.c (nvptx_goacc_validate_dims): Add asserts.

From-SVN: r267625

The vector-length-128-3.c test-case uses GOMP_OPENACC_DIM=-:-:128, but '-' is
not yet supported on trunk.  Use GOMP_OPENACC_DIM=::128 instead.

2019-01-07  Tom de Vries  <tdevries@suse.de>

	* testsuite/libgomp.oacc-c-c++-common/vector-length-128-3.c: Fix
	GOMP_OPENACC_DIM argument.

From-SVN: r267624

Expose oacc_min_dims to backends.

2019-01-07  Tom de Vries  <tdevries@suse.de>

	* omp-offload.c (oacc_get_min_dim): New function.
	* omp-offload.h (oacc_get_min_dim): Declare.

From-SVN: r267623

PR target/88521
	* config/i386/i386.c (function_value_ms_64): Return small sturct in
	AX_REG and float/double in FIRST_SSE_REG for 4 or 8 byte modes.

From-SVN: r267622

At some point when the GFORTRAN_9 node was added it was forgotten to
make it depend on GFORTRAN_8. This patch fixes this.

Committed as obvious.

2019-01-07  Janne Blomqvist  <jb@gcc.gnu.org>

       * gfortran.map (GFORTRAN_9): Make GFORTRAN_9 node depend on
       GFORTRAN_8.

From-SVN: r267621

From-SVN: r267619

Move std::filesystem directory iterators and operations from
libstdc++fs.a to main libstdc++ library. These components have many
dependencies on OS support, which is not available on all targets. Some
additional autoconf checks and conditional compilation is needed to
ensure the files will build for all targets. Previously this code was
not compiled without --enable-libstdcxx-filesystem-ts but the C++17
components should be available for all hosted builds.

The tests for these components no longer need to link to libstdc++fs.a,
but are not expected to pass on all targets. To avoid numerous failures
on targets which are not expected to pass the tests (due to missing OS
functionality) leave the dg-require-filesystem-ts directives in place
for now. This will ensure the tests only run for builds where the
filesystem-ts library is built, which presumably means some level of OS
support is present.

	PR libstdc++/86756
	* acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for utime and
	lstat and define _GLIBCXX_USE_UTIME and _GLIBCXX_USE_LSTAT.
	* config.h.in: Regenerate.
	* config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export symbols for
	remaining std::filesystem types and functions.
	* configure: Regenerate.
	* src/c++17/Makefile.am: Add C++17 filesystem sources.
	* src/c++17/Makefile.in: Regenerate.
	* src/c++17/cow-fs_dir.cc: Move src/filesystem/cow-std-dir.cc to
	here, and change name of included file.
	* src/c++17/cow-fs_ops.cc: Move src/filesystem/cow-std-ops.cc to
	here, and change name of included file.
	* src/c++17/fs_dir.cc: Move src/filesystem/std-dir.cc to here. Change
	path to dir-common.h.
	* src/c++17/fs_ops.cc: Move src/filesystem/std-ops.cc to here. Change
	path to ops-common.h. Disable -Wunused-parameter warnings.
	(internal_file_clock): Define unconditionally.
	[!_GLIBCXX_HAVE_SYS_STAT_H] (internal_file_clock::from_stat): Do not
	define.
	(do_copy_file, do_space): Move definitions to ops.common.h.
	(copy, file_size, hard_link_count, last_write_time, space): Only
	perform operation when _GLIBCXX_HAVE_SYS_STAT_H is defined, otherwise
	report an error.
	(last_write_time, read_symlink): Remove unused attributes from
	parameters.
	* src/filesystem/Makefile.am: Remove C++17 filesystem sources.
	* src/filesystem/Makefile.in: Regenerate.
	* src/filesystem/cow-std-dir.cc: Move to src/c++17/cow-fs_dir.cc.
	* src/filesystem/cow-std-ops.cc: Move to src/c++17/cow-fs_ops.cc.
	* src/filesystem/std-dir.cc: Move to src/c++17/fs_dir.cc.
	* src/filesystem/std-ops.cc: Move to src/c++17/fs_ops.cc.
	* src/filesystem/dir-common.h [!_GLIBCXX_HAVE_DIRENT_H]: Define
	dummy types and functions instead of using #error.
	* src/filesystem/dir.cc [!_GLIBCXX_HAVE_DIRENT_H]: Use #error.
	* src/filesystem/ops-common.h [!_GLIBCXX_USE_LSTAT] (lstat): Define
	in terms of stat.
	[!_GLIBCXX_HAVE_UNISTD_H]: Define dummy types and functions.
	(do_copy_file, do_space): Move definitions here from std-ops.cc.
	* src/filesystem/ops.cc: Adjust calls to do_copy_file and do_space
	to account for new namespace.
	* testsuite/27_io/filesystem/directory_entry/86597.cc: Remove
	-lstdc++fs from dg-options.
	* testsuite/27_io/filesystem/directory_entry/lwg3171.cc: Likewise.
	* testsuite/27_io/filesystem/file_status/1.cc: Likewise.
	* testsuite/27_io/filesystem/filesystem_error/cons.cc: Likewise.
	* testsuite/27_io/filesystem/filesystem_error/copy.cc: Likewise.
	* testsuite/27_io/filesystem/iterators/directory_iterator.cc:
	Likewise.
	* testsuite/27_io/filesystem/iterators/pop.cc: Likewise.
	* testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
	Likewise.
	* testsuite/27_io/filesystem/operations/absolute.cc: Likewise.
	* testsuite/27_io/filesystem/operations/canonical.cc: Likewise.
	* testsuite/27_io/filesystem/operations/copy.cc: Likewise.
	* testsuite/27_io/filesystem/operations/copy_file.cc: Likewise.
	* testsuite/27_io/filesystem/operations/create_directories.cc:
	Likewise.
	* testsuite/27_io/filesystem/operations/create_directory.cc: Likewise.
	* testsuite/27_io/filesystem/operations/create_symlink.cc: Likewise.
	* testsuite/27_io/filesystem/operations/current_path.cc: Likewise.
	* testsuite/27_io/filesystem/operations/equivalent.cc: Likewise.
	* testsuite/27_io/filesystem/operations/exists.cc: Likewise.
	* testsuite/27_io/filesystem/operations/file_size.cc: Likewise.
	* testsuite/27_io/filesystem/operations/is_empty.cc: Likewise.
	* testsuite/27_io/filesystem/operations/last_write_time.cc: Likewise.
	* testsuite/27_io/filesystem/operations/permissions.cc: Likewise.
	* testsuite/27_io/filesystem/operations/proximate.cc: Likewise.
	* testsuite/27_io/filesystem/operations/read_symlink.cc: Likewise.
	* testsuite/27_io/filesystem/operations/relative.cc: Likewise.
	* testsuite/27_io/filesystem/operations/remove.cc: Likewise.
	* testsuite/27_io/filesystem/operations/remove_all.cc: Likewise.
	* testsuite/27_io/filesystem/operations/space.cc: Likewise.
	* testsuite/27_io/filesystem/operations/status.cc: Likewise.
	* testsuite/27_io/filesystem/operations/symlink_status.cc: Likewise.
	* testsuite/27_io/filesystem/operations/temp_directory_path.cc:
	Likewise.
	* testsuite/27_io/filesystem/operations/weakly_canonical.cc: Likewise.

From-SVN: r267616

Move the C++17 std::filesystem::path definitions from the libstdc++fs.a
archive to the main libstdc++ library. The path classes do not depend on
any OS functions, so can be defined unconditionally on all targets
(rather than depending on --enable-libstdcxx-filesystem-ts). The tests
should pass on all targets too.

	PR libstdc++/86756
	* config/abi/pre/gnu.ver (GLIBCXX_3.4): Make various patterns for
	typeinfo and vtables less greedy.
	(GLIBCXX_3.4.26): Export symbols for std::filesystem::path.
	* src/c++17/Makefile.am: Add fs_path.cc and cow-fs_path.cc.
	* src/c++17/Makefile.in: Regenerate.
	* src/c++17/cow-fs_path.cc: Move src/filesystem/cow-std-path.cc to
	here, and change name of included file.
	* src/c++17/fs_path.cc: Move src/filesystem/std-path.cc to here.
	* src/filesystem/Makefile.am: Remove std-path.cc and cow-std-path.cc
	from sources.
	* src/filesystem/Makefile.in: Regenerate.
	* src/filesystem/cow-std-path.cc: Move to src/c++17/cow-fs_path.cc.
	* src/filesystem/std-path.cc: Move to src/c++17/fs_path.cc.
	* testsuite/27_io/filesystem/path/append/path.cc: Remove -lstdc++fs
	from dg-options and remove dg-require-filesystem-ts.
	* testsuite/27_io/filesystem/path/append/source.cc: Likewise.
	* testsuite/27_io/filesystem/path/assign/assign.cc: Likewise.
	* testsuite/27_io/filesystem/path/assign/copy.cc: Likewise.
	* testsuite/27_io/filesystem/path/compare/compare.cc: Likewise.
	* testsuite/27_io/filesystem/path/compare/lwg2936.cc: Likewise.
	* testsuite/27_io/filesystem/path/compare/path.cc: Likewise.
	* testsuite/27_io/filesystem/path/compare/strings.cc: Likewise.
	* testsuite/27_io/filesystem/path/concat/path.cc: Likewise.
	* testsuite/27_io/filesystem/path/concat/strings.cc: Likewise.
	* testsuite/27_io/filesystem/path/construct/80762.cc: Likewise.
	* testsuite/27_io/filesystem/path/construct/copy.cc: Likewise.
	* testsuite/27_io/filesystem/path/construct/default.cc: Likewise.
	* testsuite/27_io/filesystem/path/construct/format.cc: Likewise.
	* testsuite/27_io/filesystem/path/construct/locale.cc: Likewise.
	* testsuite/27_io/filesystem/path/construct/range.cc: Likewise.
	* testsuite/27_io/filesystem/path/construct/string_view.cc: Likewise.
	* testsuite/27_io/filesystem/path/decompose/extension.cc: Likewise.
	* testsuite/27_io/filesystem/path/decompose/filename.cc: Likewise.
	* testsuite/27_io/filesystem/path/decompose/parent_path.cc: Likewise.
	* testsuite/27_io/filesystem/path/decompose/relative_path.cc: Likewise.
	* testsuite/27_io/filesystem/path/decompose/root_directory.cc:
	Likewise.
	* testsuite/27_io/filesystem/path/decompose/root_name.cc: Likewise.
	* testsuite/27_io/filesystem/path/decompose/root_path.cc: Likewise.
	* testsuite/27_io/filesystem/path/decompose/stem.cc: Likewise.
	* testsuite/27_io/filesystem/path/generation/normal.cc: Likewise.
	* testsuite/27_io/filesystem/path/generation/normal2.cc: Likewise.
	* testsuite/27_io/filesystem/path/generation/proximate.cc: Likewise.
	* testsuite/27_io/filesystem/path/generation/relative.cc: Likewise.
	* testsuite/27_io/filesystem/path/generic/generic_string.cc: Likewise.
	* testsuite/27_io/filesystem/path/itr/components.cc: Likewise.
	* testsuite/27_io/filesystem/path/itr/traversal.cc: Likewise.
	* testsuite/27_io/filesystem/path/modifiers/clear.cc: Likewise.
	* testsuite/27_io/filesystem/path/modifiers/make_preferred.cc:
	Likewise.
	* testsuite/27_io/filesystem/path/modifiers/remove_filename.cc:
	Likewise.
	* testsuite/27_io/filesystem/path/modifiers/replace_extension.cc:
	Likewise.
	* testsuite/27_io/filesystem/path/modifiers/replace_filename.cc:
	Likewise.
	* testsuite/27_io/filesystem/path/modifiers/swap.cc: Likewise.
	* testsuite/27_io/filesystem/path/native/string.cc: Likewise.
	* testsuite/27_io/filesystem/path/nonmember/append.cc: Likewise.
	* testsuite/27_io/filesystem/path/nonmember/hash_value.cc: Likewise.
	* testsuite/27_io/filesystem/path/query/empty.cc: Likewise.
	* testsuite/27_io/filesystem/path/query/has_extension.cc: Likewise.
	* testsuite/27_io/filesystem/path/query/has_filename.cc: Likewise.
	* testsuite/27_io/filesystem/path/query/has_parent_path.cc: Likewise.
	* testsuite/27_io/filesystem/path/query/has_relative_path.cc: Likewise.
	* testsuite/27_io/filesystem/path/query/has_root_directory.cc:
	Likewise.
	* testsuite/27_io/filesystem/path/query/has_root_name.cc: Likewise.
	* testsuite/27_io/filesystem/path/query/has_root_path.cc: Likewise.
	* testsuite/27_io/filesystem/path/query/has_stem.cc: Likewise.
	* testsuite/27_io/filesystem/path/query/is_absolute.cc: Likewise.
	* testsuite/27_io/filesystem/path/query/is_relative.cc: Likewise.

From-SVN: r267615

The previous patch for PR 87431 assumed that initialing a scalar type
could not throw, but it can obtain its value via a conversion operator,
which could throw. This meant the variant could get into a valueless
state, but the valueless_by_exception() member function would always
return false.

This patch fixes it by changing the emplace members to have strong
exception safety when initializing a contained value of trivially
copyable type. The _M_valid() member gets a corresponding change to
always return true for trivially copyable types, not just scalar types.

Strong exception safety (i.e. never becoming valueless) is achieved by
only replacing the current contained value once any potentially throwing
operations have completed. If constructing the new contained value can
throw then a new std::variant object is constructed to hold it, and then
move-assigned to *this (which won't throw).

	PR libstdc++/87431
	* include/std/variant (_Variant_storage<true, _Types...>::_M_valid):
	Check is_trivially_copyable instead of is_scalar.
	(variant::emplace<N, Args>(Args&&...)): If construction of the new
	contained value can throw and its type is trivially copyable then
	construct into a temporary variant and move from it, to provide the
	strong exception safety guarantee.
	(variant::emplace<N, U, Args>(initializer_list<U>, Args&&...)):
	Likewise.
	* testsuite/20_util/variant/87431.cc: New test.
	* testsuite/20_util/variant/run.cc: Adjust test so that throwing
	conversion causes valueless state.

From-SVN: r267614

re PR tree-optimization/86020 (Performance regression in Eigen geometry.cpp test starting with r248334)


	PR tree-opt/86020
	Revert:
	2017-05-22  Jan Hubicka  <hubicka@ucw.cz>
	
        * ipa-inline.c (edge_badness): Use inlined_time instead of
        inline_summaries->get.

From-SVN: r267612

	* opts.c (enable_fdo_optimizations): Enable
	version-loops-for-strides, loop-interchange, unrol-and-jam
	and tree-loop-distribution.
	* invoke.texi: Document newly enabled options.

From-SVN: r267611

2019-01-06  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/88658
	* gfortran.h: Add macro gfc_real_4_kind
	* simplify.c (simplify_min_max): Special case for the types of
	AMAX0, AMIN0, MAX1 and MIN1, which actually change the types of
	their arguments.

2019-01-06  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/88658
	* gfortran.dg/min_max_type_2.f90: New test.

From-SVN: r267609

	PR c/88363
	* c-c++-common/attributes-4.c (falloc_align_int128,
	falloc_size_int128): Guard with #ifdef __SIZEOF_INT128__.

From-SVN: r267608

This verifies that the <bits/extc++.h> header can be compiled with ASCII
as the input character set.

	PR libstdc++/88607
	* testsuite/17_intro/headers/c++1998/charset.cc: New test.
	* testsuite/17_intro/headers/c++2011/charset.cc: New test.
	* testsuite/17_intro/headers/c++2014/charset.cc: New test.
	* testsuite/17_intro/headers/c++2017/charset.cc: New test.
	* testsuite/17_intro/headers/c++2020/charset.cc: New test.

From-SVN: r267607

From-SVN: r267606

	* doc/invoke.texi (max-inline-insns-small): New parameters.
	* ipa-inline.c (want_early_inline_function_p): simplify.
	(want_inline_small_function_p): Fix pasto from previous patch;
	use max-inline-insns-small bound.
	* params.def (max-inline-insns-small): New param.
	* ipa-fnsummary.c (analyze_function_body): Initialize time/size
	variables correctly.

From-SVN: r267603

In C++17 the clock used for filesystem::file_time_type is unspecified,
allowing it to be chrono::system_clock. The C++2a draft requires it to
be a distinct type, with additional member functions to convert to/from
other clocks (either the system clock or UTC). In order to avoid an ABI
change later, this patch defines a new distinct type now, which will be
used for std::chrono::file_clock later.

	* include/bits/fs_fwd.h (__file_clock): Define new clock.
	(file_time_type): Redefine in terms of __file_clock.
	* src/filesystem/ops-common.h (file_time): Add FIXME comment about
	overflow.
	* src/filesystem/std-ops.cc (is_set(perm_options, perm_options)): Give
	internal linkage.
	(internal_file_lock): New helper type for accessing __file_clock.
	(do_copy_file): Use internal_file_lock to convert system time to
	file_time_type.
	(last_write_time(const path&, error_code&)): Likewise.
	(last_write_time(const path&, file_time_type, error_code&)): Likewise.

From-SVN: r267602

	* doc/invoke.texi: Document max-inline-insns-size,
	uninlined-function-insns, uninlined-function-time,
	uninlined-thunk-insns and uninlined-thunk-time.
	* params.def: Add max-inline-insns-size,
	uninlined-function-insns, uninlined-function-time,
	uninlined-thunk-insns and uninlined-thunk-time.
	* ipa-fnsummary.c (compute_fn_summary, analyze_function_body): Use
	new parameters.
	* ipa-inline.c (can_inline_edge_by_limits_p,
	want_inline_small_function_p): Use new parameters.

From-SVN: r267601

From-SVN: r267600

2019-01-05  Dominique d'Humieres  <dominiq@gcc.gnu.org>

	* gcc.dg/plugin/plugindir1.c: Adjust dg-prune-output for Darwin.
	* gcc.dg/plugin/plugindir2.c: Likewise.
	* gcc.dg/plugin/plugindir3.c: Likewise.
	* gcc.dg/plugin/plugindir4.c: Likewise.

From-SVN: r267599

2019-01-05  Janus Weil  <janus@gcc.gnu.org>

	PR fortran/88009
	* class.c (gfc_find_derived_vtab): Mark the _final component as
	artificial.
	(find_intrinsic_vtab): Ditto. Also add an extra check to avoid
	dereferencing a null pointer and adjust indentation.
	* resolve.c (resolve_fl_variable): Add extra check to avoid
	dereferencing a null pointer. Move variable declarations to local scope.
	(resolve_fl_procedure): Add extra check to avoid dereferencing a null
	pointer.
	* symbol.c (check_conflict): Suppress errors for artificial symbols.

2019-01-05  Janus Weil  <janus@gcc.gnu.org>

	PR fortran/88009
	* gfortran.dg/blockdata_10.f90: New test case.

From-SVN: r267598

	PR middle-end/82564
	PR target/88620
	* expr.c (expand_assignment): For calls returning VLA structures
	if to_rtx is not a MEM, force it into a stack temporary.

	* gcc.dg/nested-func-12.c: New test.
	* gcc.c-torture/compile/pr82564.c: New test.

From-SVN: r267595

	PR debug/88635
	* dwarf2out.c (const_ok_for_output_1): Reject MINUS that contains
	SYMBOL_REF, CODE_LABEL or UNSPEC in subexpressions of second argument.
	Reject PLUS that contains SYMBOL_REF, CODE_LABEL or UNSPEC in
	subexpressions of both operands.
	(mem_loc_descriptor): Handle UNSPEC if target hook acks it and all the
	subrtxes are CONSTANT_P.
	* config/i386/i386.c (ix86_const_not_ok_for_debug_p): Revert
	2018-11-09 changes.

	* gcc.dg/debug/dwarf2/pr88635.c: New test.

From-SVN: r267594

2019-01-05  Dominique d'Humieres  <dominiq@gcc.gnu.org>

	PR target/60563
	Missing PR entry in the previous commit.

From-SVN: r267593

2019-01-05  Dominique d'Humieres  <dominiq@gcc.gnu.org>

	* g++.dg/ext/sync-4.C: Add dg-xfail-run-if for darwin.

From-SVN: r267592

gcc/c-family/ChangeLog:

	PR c/88546
	* c-attribs.c (handle_copy_attribute): Avoid copying attribute leaf.
	Handle C++ empty throw specification and C11 _Noreturn.
	(has_attribute): Also handle C11 _Noreturn.

gcc/ChangeLog:

	PR c/88546
	* attribs.c (decls_mismatched_attributes): Avoid warning for attribute
	leaf.

gcc/testsuite/ChangeLog:

	PR c/88546
	* g++.dg/ext/attr-copy.C: New test.
	* gcc.dg/attr-copy-4.c: Disable macro expansion tracking.
	* gcc.dg/attr-copy-6.c: New test.
	* gcc.dg/attr-copy-7.c: New test.

From-SVN: r267591

    
    Traceback routines, e.g. callers and funcentry, may call
    __go_get_backtrace_state. If a profiling signal arrives while we
    are in the critical section of __go_get_backtrace_state, it tries
    to do a traceback, which also calls __go_get_backtrace_state,
    which tries to enter the same critical section and will deadlock.
    Prevent this deadlock by setting up runtime_in_callers before
    calling __go_get_backtrace_state.
    
    Found while investigating golang/go#29448. Will add a test in the
    next CL.
    
    Updates golang/go#29448.
    
    Reviewed-on: https://go-review.googlesource.com/c/156037

From-SVN: r267590

From-SVN: r267589