* gcc-interface/utils.c (unchecked_convert): Tweak comment.  Only skip
	dereferences when padding to have the same size on both sides.  Do it
	for destination types with self-referential size too.

From-SVN: r272821

decl.c (gnat_to_gnu_entity): If the type requires strict alignment, then set the RM size to the type size.

	* gcc-interface/decl.c (gnat_to_gnu_entity) <E_Record_Type>: If the
	type requires strict alignment, then set the RM size to the type size.
	Rework handling of alignment and sizes of tagged types in ASIS mode.
	(validate_size): Rename local variable and remove special handling for
	strict-alignment types.
	* gcc-interface/utils.c (finish_record_type): Constify local variables
	and use properly typed constants.

From-SVN: r272820

	* gcc-interface/decl.c (gnat_to_gnu_field): Rework error messages for
	fields requiring strict alignment, add explicit test on Storage_Unit
	for position and size, and mention type alignment for position.

From-SVN: r272819

	* gcc-interface/trans.c (mark_visited_r): Set TYPE_SIZES_GIMPLIFIED on
	the main variant of a type, if any.

From-SVN: r272815

decl.c (set_nonaliased_component_on_array_type): Add missing guard for the presence of TYPE_CANONICAL.

	* gcc-interface/decl.c (set_nonaliased_component_on_array_type): Add
	missing guard for the presence of TYPE_CANONICAL.
	(set_reverse_storage_order_on_array_type): Likewise.

From-SVN: r272811

	* expr.c (expand_expr_real_1) <BIT_FIELD_REF>: Apply the big-endian
	adjustment for bit-fields to all aggregate types.
ada/
	* gcc-interface/gigi.h (make_packable_type): Remove default value.
	(value_factor_p): Tweak prototype.
	* gcc-interface/decl.c (gnat_to_gnu_entity): Add comment.
	(gnat_to_gnu_component_type): Likewise.
	(gnat_to_gnu_field): Likewise.  Fetch the position of the field earlier
	and simplify the condition under which the type is packed.  Declare
 	local variable is_bitfield.  Pass 1 as max_align to make_packable_type
	if it is set to true.
	(copy_and_substitute_in_layout): Pass 0 to make_packable_type.
	* gcc-interface/utils.c (make_packable_array_type): New function.
	(make_packable_type): Use it to rewrite the type of array field.
	(maybe_pad_type): Pass align parameter to make_packable_type.
	(create_field_decl): Minor tweaks.
	(value_factor_p): Assert that FACTOR is a power of 2 and replace the
	modulo computation by a masking operation.

From-SVN: r272810

From-SVN: r272809

From-SVN: r272808

2019-06-28  Michael Meissner  <meissner@linux.ibm.com>

	* config/rs6000/predicates.md (pcrel_address):  Use
	SYMBOL_REF_LOCAL_P to determine if a label is local.
	(pcrel_external_address): New predicate.
	(non_prefixed_mem_operand): Delete, predicate not used.
	* config/rs6000/rs6000.h (SYMBOL_FLAG_PCREL_P): Delete, we now use
	SYMBOL_REF_LOCAL_P to determine if we can use pc-relative
	addressing.
	(SYMBOL_REF_PCREL_P): Likewise.

From-SVN: r272792

Fix PR target/91009

2019-06-27   Michael Meissner  <meissner@linux.ibm.com>

	PR target/91009
	* config/rs6000/rs6000.md (floatsi<mode>2_lfiwax): Add non-VSX
	alternative.
	(floatsi<mode>2_lfiwax_mem): Add non-VSX alternative.
	(floatunssi<mode>2_lfiwzx): Add non-VSX alternative.
	(floatunssi<mode>2_lfiwzx_mem): Add non-VSX alternative.

From-SVN: r272791

This is primarily in order to improve testsuite coverage, we might elect
to prune the list at some point.

2019-06-28  Iain Sandoe  <iain@sandoe.co.uk>

	* config.gcc (powerpc-*-darwin*, powerpc64-*-darwin*): Remove
	override on extra_headers.

From-SVN: r272790

2019-06-28  Iain Sandoe  <iain@sandoe.co.uk>

	* config/darwin-c.c (pop_field_alignment): Quote #pragma options.
	* config/darwin-driver.c (darwin_default_min_version): Remove newline
	from warning.
	(darwin_driver_init): Likewise.

From-SVN: r272789

There's no need for three alternatives: "v" without TARGET_AVX512F is
the same as "x".

From-SVN: r272784

The affine transformations are not commutative (the two source operands
have entirely different meaning).

Also the nonimmediate_operand predicate can better be vector_operand.

From-SVN: r272783

A recent RTX cost commit has changed the costs for ARC700 leading to errors in slsr-13.c test.
 This commit fixes this issue by reverting the cost computation for short instructions.

2019-06-28  Claudiu Zissulescu  <claziss@synopsys.com>

	* config/arc/arc.c (arc_rtx_costs): All short instructions are
	having a lower cost regardless of the speed option.

From-SVN: r272782

From-SVN: r272781

With just an "m" constraint misaligned memory operands won't be forced
into a register, and hence cause #GP. So far this was guaranteed only
in the case that CVT{,T}PD2DQ were chosen (which looks to be the case on
x86-64 only).

Switch the second alternative to Bm and also replace
nonimmediate_operand by vector_operand.

From-SVN: r272780

A number of Arm define_expand patterns have specified constraints for
their operands. But the constraint strings are ignored at expand time
and are therefore redundant/useless. We now avoid specifying constraints
in new define_expands, but we should clean up the existing define_expand
definitions.

2019-06-28  Dennis Zhang  <dennis.zhang@arm.com>

        * config/arm/arm.md: Remove redundant constraints from
        define_expand but leave reload_inm and reload_outm patterns
        untouched since they need special constraints to work.
        * config/arm/arm-fixed.md: Remove redundant constraints from
        define_expand.
        * config/arm/iwmmxt.md: Likewise.
        * config/arm/neon.md: Likewise.
        * config/arm/sync.md: Likewise.
        * config/arm/thumb1.md: Likewise.
        * config/arm/vec-common.md: Likewise.

From-SVN: r272779

From-SVN: r272774

This patch adds libgcc configuration option to disable TM clone 
registry. This option helps to reduce code size for embedded targets 
which do not need transactional memory support.

	gcc/
	* doc/install.texi: Document --disable-tm-clone-registry.
	libgcc/
	* Makefile.in (USE_TM_CLONE_REGISTRY): New.
	(CRTSTUFF_CFLAGS): Use USE_TM_CLONE_REGISTRY.
	* configure.ac: Add --disable-tm-clone-registry option.
	* configure: Regenerate.

From-SVN: r272769

This testcase in the PR is extremely recursive, and therefore uses a huge
amount of memory on caching the results of individual calls.  We no longer
need to track all calls to catch infinite recursion, as we have other limits
on maximum depth and operations count.  So let's only cache a few calls at
the top level: 8 seems to be a reasonable compromise.

gcc/c-family/
	* c.opt (fconstexpr-loop-limit): New.
gcc/cp/
	* constexpr.c (push_cx_call_context): Return depth.
	(cxx_eval_call_expression): Don't cache past constexpr_cache_depth.

From-SVN: r272765

	PR c++/91024
	* gimplify.c (collect_fallthrough_labels): Ignore GIMPLE_PREDICT
	statements.

	* g++.dg/warn/Wimplicit-fallthrough-4.C: New test.

From-SVN: r272764

	PR tree-optimization/91010
	* tree-vect-stmts.c (scan_operand_equal_p): If offset1 == offset2,
	return true.  Otherwise, don't call operand_equal_p if offset1 or
	offset2 is NULL and just return false.

	* g++.dg/vect/simd-10.cc: New test.

From-SVN: r272763

The default for the kernel is soft-float, however a user writing a kernel
extension might want to make use of hard float.  This change makes
" -mkernel -mhard-float " work as expected.

2019-06-27  Iain Sandoe  <iain@sandoe.co.uk>

	* config/rs6000/rs6000.c (darwin_rs6000_override_options): Honour
	user-specified float mode choice for kernel mode code.

From-SVN: r272760

A recent merge dropped whitespace in the endfile specs, which affects
transactional memory cases.

2019-06-27  Iain Sandoe  <iain@sandoe.co.uk>

	* config/rs6000/darwin.h (ENDFILE_SPEC): Correct whitespace in the
	spec.

From-SVN: r272759

The linker [ld64] that supports 64Bit does not need the JBSR longcall
optimisation, and will not work with the most generic case (where the
symbol is undefined external, but there is no symbl stub).  So switch
the longcall option off.  ld64 will generate branch islands as needed.

2019-06-27  Iain Sandoe  <iain@sandoe.co.uk>

	* config/rs6000/rs6000.c (darwin_rs6000_override_options): Do not
	use longcall for 64b code.

From-SVN: r272758

2019-06-27  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/90987
	* match.c (gfc_match_common): Adjust parsing of fixed and free form
	source code containing, e.g., COMMONI.

2019-06-27  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/90987
	* gfortran.dg/common_1.f: new test.
	* gfortran.dg/common_26.f90: Ditto.

From-SVN: r272756

2019-06-27  Aaron Sawdey <acsawdey@linux.ibm.com>

	* builtins.c (get_memory_rtx): Fix comment.
	* optabs.def (movmem_optab): Change to cpymem_optab.
	* expr.c (emit_block_move_via_cpymem): Change movmem to cpymem.
	(emit_block_move_hints): Change movmem to cpymem.
	* defaults.h: Change movmem to cpymem.
	* targhooks.c (get_move_ratio): Change movmem to cpymem.
	(default_use_by_pieces_infrastructure_p): Ditto.
	* config/aarch64/aarch64-protos.h: Change movmem to cpymem.
	* config/aarch64/aarch64.c (aarch64_expand_movmem): Change movmem
	to cpymem.
	* config/aarch64/aarch64.h: Change movmem to cpymem.
	* config/aarch64/aarch64.md (movmemdi): Change name to cpymemdi.
	* config/alpha/alpha.h: Change movmem to cpymem in comment.
	* config/alpha/alpha.md (movmemqi, movmemdi, *movmemdi_1): Change
	movmem to cpymem.
	* config/arc/arc-protos.h: Change movmem to cpymem.
	* config/arc/arc.c (arc_expand_movmem): Change movmem to cpymem.
	* config/arc/arc.h: Change movmem to cpymem in comment.
	* config/arc/arc.md (movmemsi): Change movmem to cpymem.
	* config/arm/arm-protos.h: Change movmem to cpymem in names.
	* config/arm/arm.c (arm_movmemqi_unaligned, arm_gen_movmemqi, 
	gen_movmem_ldrd_strd, thumb_expand_movmemqi) Change movmem to cpymem.
	* config/arm/arm.md (movmemqi): Change movmem to cpymem.
	* config/arm/thumb1.md (movmem12b, movmem8b): Change movmem to cpymem.
	* config/avr/avr-protos.h: Change movmem to cpymem.
	* config/avr/avr.c (avr_adjust_insn_length, avr_emit_movmemhi,
	avr_out_movmem): Change movmem to cpymem.
	* config/avr/avr.md (movmemhi, movmem_<mode>, movmemx_<mode>):
	Change movmem to cpymem.
	* config/bfin/bfin-protos.h: Change movmem to cpymem.
	* config/bfin/bfin.c (single_move_for_movmem, bfin_expand_movmem):
	Change movmem to cpymem.
	* config/bfin/bfin.h: Change movmem to cpymem in comment.
	* config/bfin/bfin.md (movmemsi): Change name to cpymemsi.
	* config/c6x/c6x-protos.h: Change movmem to cpymem.
	* config/c6x/c6x.c (c6x_expand_movmem): Change movmem to cpymem.
	* config/c6x/c6x.md (movmemsi): Change name to cpymemsi.
	* config/frv/frv.md (movmemsi): Change name to cpymemsi.
	* config/ft32/ft32.md (movmemsi): Change name to cpymemsi.
	* config/h8300/h8300.md (movmemsi): Change name to cpymemsi.
	* config/i386/i386-expand.c (expand_set_or_movmem_via_loop,
	expand_set_or_movmem_via_rep, expand_movmem_epilogue,
	expand_setmem_epilogue_via_loop, expand_set_or_cpymem_prologue,
	expand_small_cpymem_or_setmem,
	expand_set_or_cpymem_prologue_epilogue_by_misaligned_moves,
	expand_set_or_cpymem_constant_prologue, 
	ix86_expand_set_or_cpymem): Change movmem to cpymem.
	* config/i386/i386-protos.h: Change movmem to cpymem.
	* config/i386/i386.h: Change movmem to cpymem in comment.
	* config/i386/i386.md (movmem<mode>): Change name to cpymem.
	(setmem<mode>): Change expansion function name.
	* config/lm32/lm32.md (movmemsi): Change name to cpymemsi.
	* config/m32c/blkmov.md (movmemhi, movmemhi_bhi_op, movmemhi_bpsi_op,
	movmemhi_whi_op, movmemhi_wpsi_op): Change movmem to cpymem.
	* config/m32c/m32c-protos.h: Change movmem to cpymem.
	* config/m32c/m32c.c (m32c_expand_movmemhi): Change movmem to cpymem.
	* config/m32r/m32r.c (m32r_expand_block_move): Change movmem to cpymem.
	* config/m32r/m32r.md (movmemsi, movmemsi_internal): Change movmem
	to cpymem.
	* config/mcore/mcore.md (movmemsi): Change name to cpymemsi.
	* config/microblaze/microblaze.c: Change movmem to cpymem in comment.
	* config/microblaze/microblaze.md (movmemsi): Change name to cpymemsi.
	* config/mips/mips.c (mips_use_by_pieces_infrastructure_p):
	Change movmem to cpymem.
	* config/mips/mips.h: Change movmem to cpymem.
	* config/mips/mips.md (movmemsi): Change name to cpymemsi.
	* config/nds32/nds32-memory-manipulation.c
	(nds32_expand_movmemsi_loop_unknown_size,
	nds32_expand_movmemsi_loop_known_size, nds32_expand_movmemsi_loop,
	nds32_expand_movmemsi_unroll,
	nds32_expand_movmemsi): Change movmem to cpymem.
	* config/nds32/nds32-multiple.md (movmemsi): Change name to cpymemsi.
	* config/nds32/nds32-protos.h: Change movmem to cpymem.
	* config/pa/pa.c (compute_movmem_length): Change movmem to cpymem.
	(pa_adjust_insn_length): Change call to compute_movmem_length.
	* config/pa/pa.md (movmemsi, movmemsi_prereload, movmemsi_postreload,
	movmemdi, movmemdi_prereload, 
	movmemdi_postreload): Change movmem to cpymem.
	* config/pdp11/pdp11.md (movmemhi, movmemhi1, 
	movmemhi_nocc, UNSPEC_MOVMEM): Change movmem to cpymem.
	* config/riscv/riscv.c: Change movmem to cpymem in comment.
	* config/riscv/riscv.h: Change movmem to cpymem.
	* config/riscv/riscv.md: (movmemsi) Change name to cpymemsi.
	* config/rs6000/rs6000.md: (movmemsi) Change name to cpymemsi.
	* config/rx/rx.md: (UNSPEC_MOVMEM, movmemsi, rx_movmem): Change
	movmem to cpymem.
	* config/s390/s390-protos.h: Change movmem to cpymem.
	* config/s390/s390.c (s390_expand_movmem, s390_expand_setmem,
	s390_expand_insv): Change movmem to cpymem.
	* config/s390/s390.md (movmem<mode>, movmem_short, *movmem_short,
	movmem_long, *movmem_long, *movmem_long_31z): Change movmem to cpymem.
	* config/sh/sh.md (movmemsi): Change name to cpymemsi.
	* config/sparc/sparc.h: Change movmem to cpymem in comment.
	* config/vax/vax-protos.h (vax_output_movmemsi): Remove prototype
	for nonexistent function.
	* config/vax/vax.h: Change movmem to cpymem in comment.
	* config/vax/vax.md (movmemhi, movmemhi1): Change movmem to cpymem.
	* config/visium/visium.h: Change movmem to cpymem in comment.
	* config/visium/visium.md (movmemsi): Change name to cpymemsi.
	* config/xtensa/xtensa.md (movmemsi): Change name to cpymemsi.
	* doc/md.texi: Change movmem to cpymem and update description to match.
	* doc/rtl.texi: Change movmem to cpymem.
	* target.def (use_by_pieces_infrastructure_p): Change movmem to cpymem.
        * doc/tm.texi: Regenerate.

From-SVN: r272755

2019-06-27  Bill Schmidt  <wschmidt@linux.ibm.com>

	* config/rs6000/rs6000.c (rs6000_option_override_internal): Enable
	-fvariable-expansion-in-unroller by default.
	* doc/invoke.texi (-fvariable-expansion-in-unroller): Document new
	default for Power.

From-SVN: r272754

        Revert
        2019-06-26  David Edelsohn  <dje.gcc@gmail.com>
        * config.gcc (powerpc-ibm-aix*): Define target_gtfiles.

        * config.gcc(rs6000-*-*): Define target_gtfiles.

From-SVN: r272753

	* lto-common.c: tree-pretty-print.h
	(type_streaming_finished): New static var.
	(gimple_register_canonical_type_1): Return updated hash; handle ODR
	types.
	(iterative_hash_canonical_type): Update use of
	gimple_register_canonical_type_1.

From-SVN: r272750

	* class.c (layout_class_type): Set TYPE_CXX_ODR_P for as-base
	type copy.

	* ipa-devirt.c (odr_type_d): Add tbaa_enabled flag.
	(add_type_duplicate): When odr hash is not allocated, to nothing.
	(odr_based_tbaa_p): New function.
	(set_type_canonical_for_odr_type): New function.
	* ipa-utils.h (enable_odr_based_tbaa, odr_based_tbaa_p,
	set_type_canonical_for_odr_type): New.
	* tree.c (gimple_canonical_types_compatible_p): ODR types with
	ODR based TBAA are not equivalent to non-ODR types.

	* lto-common.c: Include demangle.h and tree-pretty-print.h
	(type_streaming_finished): New static var.
	(gimple_register_canonical_type_1): Return updated hash; handle ODR
	types.
	(iterative_hash_canonical_type): Update use of
	gimple_register_canonical_type_1.

	* g++.dg/lto/alias-2_0.C: New testcase.
	* g++.dg/lto/alias-2_1.C: New testcase.

From-SVN: r272749

2019-06-27  Martin Liska  <mliska@suse.cz>

	PR tree-optimization/90974
	PR rtl-optimization/90975
	PR rtl-optimization/90976
	PR target/91016
	PR tree-optimization/91017
	* config/i386/i386-expand.c (ix86_expand_rounddf_32): Remove
	unused tmp.
	* lra.c (lra_set_insn_recog_data): Remove a leftover from
	initial commit of IRA.
	* optabs.c (expand_twoval_binop): Use xop0 and xop1 instead
	of op0 and op1.
	* tree-vect-loop.c (vect_create_epilog_for_reduction):
	Remove unused mode1.
	* tree-vect-stmts.c (vectorizable_call): Remove dead assignment
	to new_stmt_info.

From-SVN: r272746

re PR target/90991 (_mm_loadu_ps instrinsic translates to vmovaps in combination with _mm512_insertf32x4)

	PR target/90991
	* config/i386/sse.md (avx_vec_concat<mode>): Use nonimmediate_operand
	instead of register_operand for operands[1], add m to its constraints
	if operands[2] uses "C" constraint.  Ensure in condition that if
	operands[2] is not 0, then operands[1] is not a MEM.  For last two
	alternatives, use unaligned loads instead of aligned if operands[1] is
	misaligned_operand.

	* gcc.target/i386/avx2-pr90991-1.c: New test.
	* gcc.target/i386/avx512dq-pr90991-2.c: New test.

From-SVN: r272745

2019-06-27  Martin Liska  <mliska@suse.cz>

	* asan.c (asan_emit_allocas_unpoison): Remove obviously
	dead assignments.
	* bt-load.c (move_btr_def): Likewise.
	* builtins.c (expand_builtin_apply_args_1): Likewise.
	(expand_builtin_apply): Likewise.
	* cfgexpand.c (expand_asm_stmt): Likewise.
	(construct_init_block): Likewise.
	* cfghooks.c (verify_flow_info): Likewise.
	* cfgloopmanip.c (remove_path): Likewise.
	* cfgrtl.c (rtl_verify_bb_layout): Likewise.
	* cgraph.c (cgraph_node::set_pure_flag): Likewise.
	* combine.c (simplify_if_then_else): Likewise.
	* config/i386/i386.c (ix86_setup_incoming_vararg_bounds): Likewise.
	(choose_basereg): Likewise.
	(ix86_expand_prologue): Likewise.
	(ix86_preferred_output_reload_class): Likewise.
	* cselib.c (cselib_record_sets): Likewise.
	* df-scan.c (df_scan_alloc): Likewise.
	* dojump.c (do_jump_by_parts_greater_rtx): Likewise.
	* early-remat.c (early_remat::record_equiv_candidates): Likewise.
	* emit-rtl.c (try_split): Likewise.
	* graphite-scop-detection.c (assign_parameter_index_in_region): Likewise.
	* ipa-cp.c (cgraph_edge_brings_all_agg_vals_for_node): Likewise.
	* ira-color.c (setup_profitable_hard_regs): Likewise.
	* ira.c (rtx_moveable_p): Likewise.
	* lra-eliminations.c (eliminate_regs_in_insn): Likewise.
	* read-rtl.c (read_subst_mapping): Likewise.
	* regrename.c (scan_rtx): Likewise.
	* reorg.c (fill_slots_from_thread): Likewise.
	* tree-inline.c (tree_function_versioning): Likewise.
	* tree-ssa-reassoc.c (optimize_ops_list): Likewise.
	* tree-ssa-sink.c (statement_sink_location): Likewise.
	* tree-ssa-threadedge.c (thread_across_edge): Likewise.
	* tree-vect-loop.c (vect_get_loop_niters): Likewise.
	(vect_create_epilog_for_reduction): Likewise.
	* tree.c (build_nonstandard_integer_type): Likewise.
2019-06-27  Martin Liska  <mliska@suse.cz>

	* class.c (adjust_clone_args): Remove obviously
	dead assignments.
	(dump_class_hierarchy_r): Likewise.
	* decl.c (check_initializer): Likewise.
	* parser.c (cp_parser_lambda_expression): Likewise.
	* pt.c (unify_bound_ttp_args): Likewise.
	(convert_template_argument): Likewise.
	* rtti.c (build_headof): Likewise.
	* typeck.c (convert_for_initialization): Likewise.
2019-06-27  Martin Liska  <mliska@suse.cz>

	* libgcov-driver-system.c (gcov_exit_open_gcda_file): Remove obviously
	dead assignments.
	* libgcov-util.c: Likewise.

From-SVN: r272744

SSE2 is the required prereq of the builtins; as x86-64 has SSE2 enabled
anyway, the test failure was noticable on 32-bit builds only.

From-SVN: r272743

2019-06-27  Richard Biener  <rguenther@suse.de>

	* tree-ssa-sccvn.c (vn_reference_lookup_3): Encode valueized RHS.

	* gcc.dg/tree-ssa/ssa-fre-69.c: New testcase.

From-SVN: r272742

	PR tree-optimization/89772
	* gimple-fold.c (gimple_fold_builtin_memchr): consider trailing nuls in
	out-of-bound accesses checking.

	gcc/testsuite
	* gcc.dg/builtin-memchr-4.c: New test.

From-SVN: r272740

When I refactored the filesystem_error code I changed it to only use the
constructor parameter in the what() string, instead of the string
returned by system_error::what(). That meant it no longer included the
description of the error_code that system_error adds. This restores the
previous behaivour, as encouraged by the standard ("Implementations
should include the system_error::what() string and the pathnames of
path1 and path2 in the native format in the returned string").

	PR libstdc++/91012
	* src/c++17/fs_path.cc (filesystem_error::_Impl): Use a string_view
	for the what_arg parameters.
	(filesystem_error::filesystem_error): Pass system_error::what() to
	the _Impl constructor.
	* testsuite/27_io/filesystem/filesystem_error/cons.cc: Ensure that
	filesystem_error::what() contains system_error::what().

From-SVN: r272739

2019-06-27  Martin Liska  <mliska@suse.cz>

	PR tree-optimization/91014
	* tree-ssa-dse.c (initialize_ao_ref_for_dse): Bail out
	when LHS is NULL_TREE.
2019-06-27  Martin Liska  <mliska@suse.cz>

	PR tree-optimization/91014
	* gcc.target/s390/pr91014.c: New test.

From-SVN: r272738