https://gcc.gnu.org/ml/gcc-patches/2019-05/msg01245.html
	* cp-tree.h (struct lang_decl_ns): Remove usings field.
	(DECL_NAMESPACE_USING): Delete.
	* name-lookup.c (name_lookup::search_usings): Use namespace's
	binding scope.
	(name_lookup::queue_namespae): Likewise.
	(finish_namespace_using_directive, push_namespace): Likewise.
	(has_using_namespace_std_directive): Just search the entire
	binding stack.

From-SVN: r271416

Darwin doesn't emit a .file directive by default
and one of the scan-asm hits for ELF targets comes from
this directive. Adjust for Darwin and explain.

2019-05-20  Iain Sandoe  <iain@sandoe.co.uk>

	PR testsuite/58321
	* gcc.target/i386/memcpy-strategy-3.c: Adjust count for Darwin and
	add a comment as to the reason for the difference.
	* gcc.target/i386/memset-strategy-1.c: Likewise.

From-SVN: r271415

2019-05-20  Richard Biener  <rguenther@suse.de>

	* tree-ssa-structalias.c (find_func_aliases): POINTER_DIFF_EXPR
	doesn't produce pointers.
	{TRUNC,CEIL,FLOOR,ROUND,EXACT}_{DIV,MOD}_EXPR points to what
	the first operand points to.

From-SVN: r271414

	* tree-ssa-alias.c (compare_sizes): New function.
	(sompare_type_sizes): New function
	(aliasing_component_refs_p): Use it.
	(indirect_ref_may_alias_decl_p): Likewise.

From-SVN: r271413

An array of an unknown bound is an incomplete type, so no object of such
a type can be constructed. This means __is_constructible should always
be false for an array of unknown bound.

This patch also changes the std::is_default_constructible trait to use
std::is_constructible, which now gives the right answer for arrays of
unknown bound.

gcc/cp:

	PR c++/90532 Ensure __is_constructible(T[]) is false
	* method.c (is_xible_helper): Return error_mark_node for construction
	of an array of unknown bound.

gcc/testsuite:

	PR c++/90532 Ensure __is_constructible(T[]) is false
	* g++.dg/ext/90532.C: New test.

libstdc++-v3:

	PR c++/90532 Ensure __is_constructible(T[]) is false
	* include/std/type_traits (__do_is_default_constructible_impl)
	(__is_default_constructible_atom, __is_default_constructible_safe):
	Remove.
	(is_default_constructible): Use is_constructible.
	* testsuite/20_util/is_constructible/value.cc: Check int[] case.
	* testsuite/20_util/is_default_constructible/value.cc: Likewise.
	* testsuite/20_util/is_trivially_constructible/value.cc: Likewise.
	* testsuite/20_util/is_trivially_default_constructible/value.cc:
	Likewise.

From-SVN: r271412

	* config/i386/sol2.h (CC1_SPEC): Reject -mx32.

From-SVN: r271411

	* config/sol2.h (LIBTSAN_EARLY_SPEC): Remove : after %e.
	(LIBLSAN_EARLY_SPEC): Likewise.
	* config/i386/sol2.h (ASAN_REJECT_SPEC): Likewise.

From-SVN: r271410

Pass the size to the allocator so that it may optimize deallocation.
This was seen to significantly reduce the work required in jemalloc,
with about 40% reduction in CPU cycles in the free path.

Note jemalloc >= 5.2 is required to fix a crash with 0 sizes.

2019-05-20  Pádraig Brady  <pbrady@fb.com>

	* libstdc++-v3/include/ext/new_allocator.h (deallocate): Pass the size
	to the deallocator with -fsized-deallocation.

From-SVN: r271409

	* testsuite/experimental/memory_resource/new_delete_resource.cc: Fix
	test by passing correct alignment to deallocate function.

From-SVN: r271408

2019-05-20  Martin Liska  <mliska@suse.cz>

	* config/i386/i386.c (ix86_libc_has_fast_function):
	Add ATTRIBUTE_UNUSED for the argument.

From-SVN: r271406

2019-05-20  Richard Biener  <rguenther@suse.de>

	* gimple-match-head.c: Include vec-perm-indices.h.
	* generic-match-head.c: Likewise.
	* fold-const.h (fold_vec_perm): Declare when vec-perm-indices.h
	is included.
	* fold-const.c (fold_vec_perm): Export.
	(fold_ternary_loc): Move non-constant folding of VEC_PERM_EXPR...
	(match.pd): ...here.

From-SVN: r271404

	* cfgloop.h (struct loop): Add simdlen member.
	* cfgloopmanip.c (copy_loop_info): Copy simdlen as well.
	* omp-expand.c (expand_omp_simd): Set it if simdlen clause is present.
	* tree-vect-loop.c (vect_analyze_loop): Pass loop->simdlen != 0
	as new argument to autovectorize_vector_sizes target hook.  If
	loop->simdlen, pick up vector size where the vectorization factor
	is equal to loop->simd, and if there is none, fall back to the first
	successful one.
	(vect_transform_loop): Adjust autovectorize_vector_sizes target hook
	caller.
	* omp-low.c (omp_clause_aligned_alignment): Likewise.
	* omp-general.c (omp_max_vf): Likewise.
	* optabs-query.c (can_vec_mask_load_store_p): Likewise.
	* tree-vect-slp.c (vect_slp_bb): Likewise.
	* target.def (autovectorize_vector_sizes): Add ALL argument and
	document it.
	* doc/tm.texi: Adjust documentation.
	* targhooks.c (default_autovectorize_vector_sizes): Add bool argument.
	* targhooks.h (default_autovectorize_vector_sizes): Likewise.
	* config/aarch64/aarch64.c (aarch64_autovectorize_vector_sizes): Add
	bool argument.
	* config/arc/arc.c (arc_autovectorize_vector_sizes): Likewise.
	* config/arm/arm.c (arm_autovectorize_vector_sizes): Likewise.
	* config/mips/mips.c (mips_autovectorize_vector_sizes): Likewise.
	* config/i386/i386.c (ix86_autovectorize_vector_sizes): Likewise.  If
	true and TARGET_AVX512F or TARGET_AVX, push 3 or 2 sizes even if
	preferred vector size is not 512-bit or 256-bit, just put those
	unpreferred ones last.

	* gcc.target/i386/avx512f-simd-1.c: New test.

From-SVN: r271403

2019-05-20  Christophe Lyon  <christophe.lyon@linaro.org>

	* gcc.target/aarch64/target_attr_10.c: Add quotes to expected
	error message.
	* gcc.target/arm/attr-neon-builtin-fail.c: Likewise.

From-SVN: r271402

2019-05-20  Martin Liska  <mliska@suse.cz>

	* targhooks.c (default_libc_has_fast_function): New function.
	* targhooks.h (default_libc_has_fast_function): Likewise.

From-SVN: r271401

2019-05-20  Martin Liska  <mliska@suse.cz>

	PR middle-end/90263
	* builtins.c (expand_builtin_memory_copy_args): When having a
	target with fast mempcpy implementation do now use memcpy.
	* config/i386/i386.c (ix86_libc_has_fast_function): New.
	(TARGET_LIBC_HAS_FAST_FUNCTION): Likewise.
	* doc/tm.texi: Likewise.
	* doc/tm.texi.in: Likewise.
	* target.def:
	* expr.c (emit_block_move_hints): Add 2 new arguments.
	* expr.h (emit_block_move_hints): Bail out when libcall
	to memcpy would be used.
2019-05-20  Martin Liska  <mliska@suse.cz>

	PR middle-end/90263
	* gcc.c-torture/compile/pr90263.c: New test.
	* lib/target-supports.exp: Add check_effective_target_glibc.

From-SVN: r271400

2019-05-20  Martin Liska  <mliska@suse.cz>

	* profile-count.c: Add vertical spacing in order
	to separate functions.
	* profile-count.h: Likewise.

From-SVN: r271399

2019-05-20  Martin Liska  <mliska@suse.cz>

	* profile-count.h: Do not use full qualified
	names if possible.
	* profile-count.c (profile_count::to_frequency): Likewise.

From-SVN: r271398

2019-05-20  Martin Liska  <mliska@suse.cz>

	* profile-count.h (enum profile_quality): Use capital letters
	for enum value names.  Use the adjusted names.
	* profile-count.c: Use the adjusted names.

From-SVN: r271397

2019-05-20  Richard Biener  <rguenther@suse.de>

	PR testsuite/90518
	* gcc.dg/gimplefe-40.c: Restrict to targets with appropriate
	vector support.
	* gcc.dg/gimplefe-41.c: Likewise.

From-SVN: r271396

libcpp/ChangeLog:
2019-05-19  Andrew Pinski  <apinski@marvell.com>

        PR pch/81721
        * lex.c (cpp_token_val_index <case SPELL_OPERATOR>): If tok->flags
        has NAMED_OP set, then return CPP_TOKEN_FLD_NODE.

gcc/testsuite/ChangeLog:
2019-05-19  Andrew Pinski  <apinski@marvell.com>

        PR pch/81721
        * g++.dg/pch/operator-1.C: New testcase.
        * g++.dg/pch/operator-1.Hs: New file.

From-SVN: r271395

From-SVN: r271394

This replaces "wH" by "v", "wI" by "d", and when both are allowed it
uses "wa"; all with isa "p8v".


	* config/rs6000/constraints.md (define_register_constraint "wH"):
	Delete.
	(define_register_constraint "wI"): Delete.
	* config/rs6000/rs6000.h (enum r6000_reg_class_enum): Delete
	RS6000_CONSTRAINT_wH and RS6000_CONSTRAINT_wI.
	* config/rs6000/rs6000.c (rs6000_debug_reg_global): Adjust.
	(rs6000_init_hard_regno_mode_ok): Adjust.
	* config/rs6000/rs6000.md: Replace "wH" and "wI" constraints by "v"
	resp. "d", or with "wa" as appropriate, all with "p8v".
	* config/rs6000/vsx.md: Ditto.
	* doc/md.texi (Machine Constraints): Adjust.

From-SVN: r271390

This replaces the "wy" constraint by "wa", with isa "p8v".  It also
creates a new attribute <Fisa>, used together with all <Fv2>.


	* config/rs6000/constraints.md (define_register_constraint "wy"):
	Delete.
	* config/rs6000/rs6000.h (enum r6000_reg_class_enum): Delete
	RS6000_CONSTRAINT_wy.
	* config/rs6000/rs6000.c (rs6000_debug_reg_global): Adjust.
	(rs6000_init_hard_regno_mode_ok): Adjust.
	* config/rs6000/rs6000.md: Replace "wy" constraint by "wa" with "p8v".
	Use "<Fisa>" as "isa" in all alternatives that use "<Fv2>".
	(define_mode_attr Fisa): New.
	* config/rs6000/vsx.md: Replace "wy" constraint by "wa" with "p8v".
	* doc/md.texi (Machine Constraints): Adjust.

From-SVN: r271389

This replaces the "wu" constraint by "v", with isa "p8v".  Or, in most
cases, use "wa", since the instructions allow all VSX registers, and it
does not change how GCC behaves, so it is clearer that way.

This also delete the unused <Fa>.


	* config/rs6000/constraints.md (define_register_constraint "wu"):
	Delete.
	* config/rs6000/rs6000.h (enum r6000_reg_class_enum): Delete
	RS6000_CONSTRAINT_wu.
	* config/rs6000/rs6000.c (rs6000_debug_reg_global): Adjust.
	(rs6000_init_hard_regno_mode_ok): Adjust.
	* config/rs6000/rs6000.md: Replace "wu" constraint by "v" or "wa",
	both with "p8v".
	(define_mode_attr Fa): Delete.
	* config/rs6000/vsx.md: Ditto.
	* doc/md.texi (Machine Constraints): Adjust.

From-SVN: r271388

This replaces "wJ" by "wI", and "wK by "wH", both with isa "p9v".


	* config/rs6000/constraints.md (define_register_constraint "wJ"):
	Delete.
	(define_register_constraint "wK"): Delete.
	* config/rs6000/rs6000.h (enum r6000_reg_class_enum): Delete
	RS6000_CONSTRAINT_wJ and RS6000_CONSTRAINT_wK.
	* config/rs6000/rs6000.c (rs6000_debug_reg_global): Adjust.
	(rs6000_init_hard_regno_mode_ok): Adjust.
	* config/rs6000/rs6000.md: Replace "wJ" constraint by "wI" with "p9v".
	Replace "wK" constraint by "wH" with "p9v".
	* config/rs6000/vsx.md: Ditto.
	* doc/md.texi (Machine Constraints): Adjust.

From-SVN: r271387

This replaces the "wb" constraint by "v", with isa "p9v".


	* config/rs6000/constraints.md (define_register_constraint "wb"):
	Delete.
	* config/rs6000/rs6000.h (enum r6000_reg_class_enum): Delete
	RS6000_CONSTRAINT_wb.
	* config/rs6000/rs6000.c (rs6000_debug_reg_global): Adjust.
	(rs6000_init_hard_regno_mode_ok): Adjust.
	* config/rs6000/rs6000.md: Replace "wb" constraint by "v" with "p9v".
	* config/rs6000/vsx.md: Ditto.
	* doc/md.texi (Machine Constraints): Adjust.

From-SVN: r271386

This replaces the "wo" constraint by "wa", with isa "p9v".


	* config/rs6000/constraints.md (define_register_constraint "wo"):
	Delete.
	* config/rs6000/rs6000.h (enum r6000_reg_class_enum): Delete
	RS6000_CONSTRAINT_wo.
	* config/rs6000/rs6000.c (rs6000_debug_reg_global): Adjust.
	(rs6000_init_hard_regno_mode_ok): Adjust.
	* config/rs6000/rs6000.md: Replace "wo" constraint by "wa" with "p9v".
	* config/rs6000/altivec.md: Ditto.
	* doc/md.texi (Machine Constraints): Adjust.

From-SVN: r271385

When using posix_spawn or fork to launch a child process, the parent
needs to wait for the child, otherwise the dead child is left as a
zombie process. For this purpose one can install a signal handler for
SIGCHLD.

2019-05-19  Janne Blomqvist  <jb@gcc.gnu.org>

	PR libfortran/90038
	* intrinsics/execute_command_line (sigchld_handler): New function.
        (execute_command_line): Install handler for SIGCHLD.
        * configure.ac: Check for presence of sigaction and waitpid.
        * config.h.in: Regenerated.
        * configure: Regenerated.

Regtested on x86_64-pc-linux-gnu.

From-SVN: r271384

From-SVN: r271382

2019-05-19  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/90498
	* trans-stmt.c (trans_associate_var) Do not use the saved
	descriptor if the expression is a COMPONENT_REF.

2019-05-19  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/90498
	* gfortran.dg/associate_48.f90 : New test.

From-SVN: r271380

re PR fortran/78290 (Gfortran incorrectly creates a copy of an array passed to an array pointer dummy argument)

2019-05-19  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/78290
	* gfortran.dg/pr78290.f90: New test.

From-SVN: r271379

2019-05-19  Thomas Koenig  <tkoenig@gcc.gnu.org>

    PR fortran/88821
    * ChangeLog: Add forgotten entry.

From-SVN: r271378

2019-05-19  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/88821
	* expr.c (gfc_is_simply_contiguous): Return true for
	an EXPR_ARRAY.
	* trans-array.c (is_pointer): New function.
	(gfc_conv_array_parameter): Call gfc_conv_subref_array_arg
	when not optimizing and not optimizing for size if the formal
	arg is passed by reference.
	* trans-expr.c (gfc_conv_subref_array_arg): Add arguments
	fsym, proc_name and sym.  Add run-time warning for temporary
	array creation.  Wrap argument if passing on an optional
	argument to an optional argument.
	* trans.h (gfc_conv_subref_array_arg): Add optional arguments
	fsym, proc_name and sym to prototype.

2019-05-19  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/88821
	* gfortran.dg/alloc_comp_auto_array_3.f90: Add -O0 to dg-options
	to make sure the test for internal_pack is retained.
	* gfortran.dg/assumed_type_2.f90: Split compile and run time
	tests into this and
	* gfortran.dg/assumed_type_2a.f90: New file.
	* gfortran.dg/c_loc_test_22.f90: Likewise.
	* gfortran.dg/contiguous_3.f90: Likewise.
	* gfortran.dg/internal_pack_11.f90: Likewise.
	* gfortran.dg/internal_pack_12.f90: Likewise.
	* gfortran.dg/internal_pack_16.f90: Likewise.
	* gfortran.dg/internal_pack_17.f90: Likewise.
	* gfortran.dg/internal_pack_18.f90: Likewise.
	* gfortran.dg/internal_pack_4.f90: Likewise.
	* gfortran.dg/internal_pack_5.f90: Add -O0 to dg-options
	to make sure the test for internal_pack is retained.
	* gfortran.dg/internal_pack_6.f90: Split compile and run time
	tests into this and
	* gfortran.dg/internal_pack_6a.f90: New file.
	* gfortran.dg/internal_pack_8.f90: Likewise.
	* gfortran.dg/missing_optional_dummy_6: Split compile and run time
	tests into this and
	* gfortran.dg/missing_optional_dummy_6a.f90: New file.
	* gfortran.dg/no_arg_check_2.f90: Split compile and run time tests
	into this and
	* gfortran.dg/no_arg_check_2a.f90: New file.
	* gfortran.dg/typebound_assignment_5.f90: Split compile and run time
	tests into this and
	* gfortran.dg/typebound_assignment_5a.f90: New file.
	* gfortran.dg/typebound_assignment_6.f90: Split compile and run time
	tests into this and
	* gfortran.dg/typebound_assignment_6a.f90: New file.
	* gfortran.dg/internal_pack_19.f90: New file.
	* gfortran.dg/internal_pack_20.f90: New file.
	* gfortran.dg/internal_pack_21.f90: New file.

From-SVN: r271377

2019-05-19  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/90329
	* invoke.texi: Document -fbroken-callers.
	* lang.opt: Add -fbroken-callers.
	* trans-decl.c (create_function_arglist): Only set
	DECL_HIDDEN_STRING_LENGTH if flag_broken_callers is set.

From-SVN: r271376

From-SVN: r271375

Darwin is able to use two runtimes for objective-c; the
default is its native "NeXT" runtime, but also it can build
code using the "gnu-runtime".  In order to do this, we have to
be able to find the gnu-runtime headers (which are installed
into the compiler's tree).

The process to do this is erroneously prepending the sysroot
to this when a sysroot is in force.  The gnu-runtime headers have
never been installed in a Darwin (macOS) SDK so we must make
sure that they are found local to the compiler.

gcc/

2019-05-18  Iain Sandoe  <iain@sandoe.co.uk>

	* config/darwin-c.c (darwin_register_objc_includes): Do not
	prepend the sysroot when building gnu-runtime header search
	paths.

From-SVN: r271371

The instancetype has been added as a typedef alias to id
in order to allow diagnosis of cases where a class is used
or returned where an instance is expected.

This adds the typedef, and tests that we can parse it.
It doesn't alter the diagnostics yet.

gcc/objc/

2019-05-18  Iain Sandoe  <iain@sandoe.co.uk>

	* objc/objc-act.h (OCTI_INSTANCE_TYPE, OCTI_INSTANCETYPE_NAME): New.
	(objc_global_trees): Add instance type and name.
	(INSTANCE_TYPEDEF_NAME): New.
	* objc/objc-act.c (synth_module_prologue): Build decls for
	objc_instancetype_type and objc_instancetype_name.

gcc/testsuite/

2019-05-18  Iain Sandoe  <iain@sandoe.co.uk>

	* objc.dg/instancetype-0.m: New.

From-SVN: r271370

We have been emitting two section swiches in the Darwin's
file end function.  This means that varasm is not updated
which could matter if we elect to reorder some of the file
end operations in support of LTO actions.

2019-05-18  Iain Sandoe  <iain@sandoe.co.uk>

	* config/darwin.c (darwin_file_end): Use switch_to_section ()
	instead of direct output of the asm.

From-SVN: r271369

From-SVN: r271368

gcc/testsuite/ChangeLog:

	* g++.dg/overload/conv-op1.C: Adjust text of expected messages.
	* g++.dg/ubsan/pr63956.C: Same.
	* g++.old-deja/g++.pt/assign1.C: Same.

From-SVN: r271364