PR target/92841
	* config/i386/i386.md (*stack_protect_set_3): For pic_32bit_operand
	always use lea{q}, no matter what value which_alternative has.

	* gcc.target/i386/pr92841-2.c: New test.

From-SVN: r279633

	PR target/93002
	* config/i386/i386.md (dec reg; cmp $-1, reg; jne lab): New
	define_peephole2.

	* gcc.target/i386/pr93002.c: New test.

From-SVN: r279632

	gcc/fortran/
	* openmp.c (resolve_oacc_data_clauses): Don't disallow allocatable
	polymorphic types for OpenACC.
	* trans-openmp.c (gfc_trans_omp_clauses): Support polymorphic class
	types.

	libgomp/
	* testsuite/libgomp.oacc-fortran/class-ptr-param.f95: New test.
	* testsuite/libgomp.oacc-fortran/classtypes-1.f95: New test.
	* testsuite/libgomp.oacc-fortran/classtypes-2.f95: New test.

From-SVN: r279631

	libgomp/
	* testsuite/libgomp.oacc-fortran/deep-copy-1.f90: New test.
	* testsuite/libgomp.oacc-fortran/deep-copy-2.f90: New test.
	* testsuite/libgomp.oacc-fortran/deep-copy-3.f90: New test.
	* testsuite/libgomp.oacc-fortran/deep-copy-4.f90: New test.
	* testsuite/libgomp.oacc-fortran/deep-copy-5.f90: New test.
	* testsuite/libgomp.oacc-fortran/deep-copy-6.f90: New test.
	* testsuite/libgomp.oacc-fortran/deep-copy-7.f90: New test.
	* testsuite/libgomp.oacc-fortran/deep-copy-8.f90: New test.
	* testsuite/libgomp.oacc-fortran/derived-type-1.f90: New test.
	* testsuite/libgomp.oacc-fortran/derivedtype-1.f95: New test.
	* testsuite/libgomp.oacc-fortran/derivedtype-2.f95: New test.
	* testsuite/libgomp.oacc-fortran/multidim-slice.f95: New test.
	* testsuite/libgomp.oacc-fortran/update-2.f90: New test.

Co-Authored-By: Cesar Philippidis <cesar@codesourcery.com>

From-SVN: r279630

	libgomp/
	* testsuite/libgomp.oacc-c-c++-common/deep-copy-1.c: New test.
	* testsuite/libgomp.oacc-c-c++-common/deep-copy-2.c: New test.
	* testsuite/libgomp.oacc-c-c++-common/deep-copy-4.c: New test.
	* testsuite/libgomp.oacc-c-c++-common/deep-copy-6.c: New test.
	* testsuite/libgomp.oacc-c-c++-common/deep-copy-7.c: New test.
	* testsuite/libgomp.oacc-c-c++-common/deep-copy-8.c: New test.
	* testsuite/libgomp.oacc-c-c++-common/deep-copy-9.c: New test.
	* testsuite/libgomp.oacc-c-c++-common/deep-copy-10.c: New test.
	* testsuite/libgomp.oacc-c-c++-common/deep-copy-11.c: New test.
	* testsuite/libgomp.oacc-c-c++-common/deep-copy-14.c: New test.
	* testsuite/libgomp.oacc-c++/deep-copy-12.C: New test.
	* testsuite/libgomp.oacc-c++/deep-copy-13.C: New test.

From-SVN: r279629

        gcc/fortran/
        * gfortran.h (gfc_omp_map_op): Add OMP_MAP_ATTACH, OMP_MAP_DETACH.
        * openmp.c (gfc_match_omp_variable_list): Add allow_derived parameter.
        Parse derived-type member accesses if true.
        (omp_mask2): Add OMP_CLAUSE_ATTACH and OMP_CLAUSE_DETACH.
        (gfc_match_omp_map_clause): Add allow_derived parameter.  Pass to
        gfc_match_omp_variable_list.
        (gfc_match_omp_clauses): Support attach and detach.  Support derived
        types for appropriate OpenACC directives.
        (OACC_PARALLEL_CLAUSES, OACC_SERIAL_CLAUSES, OACC_KERNELS_CLAUSES,
        OACC_DATA_CLAUSES, OACC_ENTER_DATA_CLAUSES): Add OMP_CLAUSE_ATTACH.
        (OACC_EXIT_DATA_CLAUSES): Add OMP_CLAUSE_DETACH.
        (check_symbol_not_pointer): Don't disallow pointer objects of derived
        type.
        (resolve_oacc_data_clauses): Don't disallow allocatable derived types.
        (resolve_omp_clauses): Perform duplicate checking only for non-derived
        type component accesses (plain variables and arrays or array sections).
        Support component refs.
        * trans-expr.c (gfc_conv_component_ref,
        conv_parent_component_references): Make global.
        (gfc_maybe_dereference_var): New function, broken out of...
        (gfc_conv_variable): ...here.  Call above function.
        * trans-openmp.c (gfc_omp_privatize_by_reference): Support component
        refs.
        (gfc_trans_omp_array_section): New function, broken out of...
        (gfc_trans_omp_clauses): ...here.  Support component refs/derived
        types, attach and detach clauses.
        * trans.h (gfc_conv_component_ref, conv_parent_component_references,
        gfc_maybe_dereference_var): Add prototypes.

        gcc/testsuite/
        * gfortran.dg/goacc/derived-types.f90: New test.
        * gfortran.dg/goacc/derived-types-2.f90: New test.
        * gfortran.dg/goacc/derived-types-3.f90: New test.
        * gfortran.dg/goacc/data-clauses.f95: Adjust for expected errors.
        * gfortran.dg/goacc/enter-exit-data.f95: Likewise.

From-SVN: r279628

	gcc/c-family/
	* c-common.h (c_omp_map_clause_name): Add prototype.
	* c-omp.c (c_omp_map_clause_name): New function.
	* c-pragma.h (pragma_omp_clause): Add PRAGMA_OACC_CLAUSE_ATTACH and
	PRAGMA_OACC_CLAUSE_DETACH.

	gcc/c/
	* c-parser.c (c_parser_omp_clause_name): Add parsing of attach and
	detach clauses.
	(c_parser_omp_variable_list): Add ALLOW_DEREF optional parameter.
	Allow deref (->) in variable lists if true.
	(c_parser_omp_var_list_parens): Add ALLOW_DEREF optional parameter.
	Pass to c_parser_omp_variable_list.
	(c_parser_oacc_data_clause): Support attach and detach clauses.  Update
	call to c_parser_omp_variable_list.
	(c_parser_oacc_all_clauses): Support attach and detach clauses.
	(OACC_DATA_CLAUSE_MASK, OACC_ENTER_DATA_CLAUSE_MASK,
	OACC_KERNELS_CLAUSE_MASK, OACC_PARALLEL_CLAUSE_MASK,
	OACC_SERIAL_CLAUSE_MASK): Add PRAGMA_OACC_CLAUSE_ATTACH.
	(OACC_EXIT_DATA_CLAUSE_MASK): Add PRAGMA_OACC_CLAUSE_DETACH.
	* c-typeck.c (handle_omp_array_sections_1): Reject subarrays for attach
	and detach.  Support deref.
	(handle_omp_array_sections): Use GOMP_MAP_ATTACH_DETACH instead of
	GOMP_MAP_ALWAYS_POINTER for OpenACC.
	(c_oacc_check_attachments): New function.
	(c_finish_omp_clauses): Check attach/detach arguments for being
	pointers using above.  Support deref.

	gcc/cp/
	* parser.c (cp_parser_omp_clause_name): Support attach and detach
	clauses.
	(cp_parser_omp_var_list_no_open): Add ALLOW_DEREF optional parameter.
	Parse deref if true.
	(cp_parser_omp_var_list): Add ALLOW_DEREF optional parameter.  Pass to
	cp_parser_omp_var_list_no_open.
	(cp_parser_oacc_data_clause): Support attach and detach clauses.
	Update call to cp_parser_omp_var_list_no_open.
	(cp_parser_oacc_all_clauses): Support attach and detach.
	(OACC_DATA_CLAUSE_MASK, OACC_ENTER_DATA_CLAUSE_MASK,
	OACC_KERNELS_CLAUSE_MASK, OACC_PARALLEL_CLAUSE_MASK,
	OACC_SERIAL_CLAUSE_MASK): Add PRAGMA_OACC_CLAUSE_ATTACH.
	(OACC_EXIT_DATA_CLAUSE_MASK): Add PRAGMA_OACC_CLAUSE_DETACH.
	* semantics.c (handle_omp_array_sections_1): Reject subarrays for
	attach and detach.
	(handle_omp_array_sections): Use GOMP_MAP_ATTACH_DETACH instead of
	GOMP_MAP_ALWAYS_POINTER for OpenACC.
	(cp_oacc_check_attachments): New function.
	(finish_omp_clauses): Use above function.  Allow structure fields and
	class members to appear in OpenACC data clauses.  Support
	GOMP_MAP_ATTACH_DETACH.  Support deref.

	gcc/testsuite/
	* c-c++-common/goacc/deep-copy-arrayofstruct.c: New test.
	* c-c++-common/goacc/mdc-1.c: New test.
	* c-c++-common/goacc/mdc-2.c: New test.
	* gcc.dg/goacc/mdc.C: New test.

Co-Authored-By: Cesar Philippidis <cesar@codesourcery.com>

From-SVN: r279627

	gcc/
	* gimplify.c (gimplify_omp_var_data): Add GOVD_MAP_HAS_ATTACHMENTS.
	(insert_struct_comp_map): Support derived-type member mappings
	for arrays with descriptors which use GOMP_MAP_TO_PSET.  Support
	GOMP_MAP_ATTACH_DETACH.
	(gimplify_scan_omp_clauses): Tidy up OACC_ENTER_DATA/OACC_EXIT_DATA
	mappings.  Handle attach/detach clauses and component references.
	(gimplify_adjust_omp_clauses_1): Skip adjustments for explicit
	attach/detach clauses.
	(gimplify_omp_target_update): Handle struct mappings and finalize for
	detach operations.
	* omp-low.c (lower_omp_target): Support GOMP_MAP_ATTACH,
	GOMP_MAP_DETACH, GOMP_MAP_FORCE_DETACH.
	* tree-pretty-print.c (dump_omp_clause): Likewise, plus
	GOMP_MAP_ATTACH_DETACH.

	include/
	* gomp-constants.h (gomp_map_kind): Add GOMP_MAP_ATTACH_DETACH.

From-SVN: r279626

	include/
	* gomp-constants.h (GOMP_MAP_FLAG_SPECIAL_4, GOMP_MAP_DEEP_COPY):
	Define.
	(gomp_map_kind): Add GOMP_MAP_ATTACH, GOMP_MAP_DETACH,
	GOMP_MAP_FORCE_DETACH.

	libgomp/
	* libgomp.h (struct target_var_desc): Add do_detach flag.
	* oacc-init.c (acc_shutdown_1): Free aux block if present.
	* oacc-mem.c (find_group_last): Add SIZES parameter. Support
	struct components.  Tidy up and add some new checks.
	(goacc_enter_data_internal): Update call to find_group_last.
	(goacc_exit_data_internal): Support detach operations and
	GOMP_MAP_STRUCT.
	(GOACC_enter_exit_data): Handle initial GOMP_MAP_STRUCT or
	GOMP_MAP_FORCE_PRESENT in finalization detection code.  Handle
	attach/detach in enter/exit data detection code.
	* target.c (gomp_map_vars_existing): Initialise do_detach field of
	tgt_var_desc.
	(gomp_map_vars_internal): Support attach.
	(gomp_unmap_vars_internal): Support detach.

From-SVN: r279625

	libgomp/
	* libgomp.h (struct splay_tree_aux): Add attach_count field.
	(gomp_attach_pointer, gomp_detach_pointer): Add prototypes.
	* libgomp.map (OACC_2.6): New section. Add acc_attach,
	acc_attach_async, acc_detach, acc_detach_async, acc_detach_finalize,
	acc_detach_finalize_async.
	* oacc-mem.c (acc_attach_async, acc_attach, goacc_detach_internal,
	acc_detach, acc_detach_async, acc_detach_finalize,
	acc_detach_finalize_async): New functions.
	* openacc.h (acc_attach, acc_attach_async, acc_detach,
	(acc_detach_async, acc_detach_finalize, acc_detach_finalize_async): Add
	prototypes.
	* target.c (gomp_attach_pointer, gomp_detach_pointer): New functions.
	(gomp_remove_var_internal): Free attachment counts if present.
	* testsuite/libgomp.oacc-c-c++-common/deep-copy-3.c: New test.
	* testsuite/libgomp.oacc-c-c++-common/deep-copy-5.c: New test.

Co-Authored-By: Thomas Schwinge <thomas@codesourcery.com>

From-SVN: r279624

	gcc/
	* gimplify.c (insert_struct_comp_map, extract_base_bit_offset): New.
	(gimplify_scan_omp_clauses): Outline duplicated code into calls to
	above two functions.

From-SVN: r279623

	libgomp/
	* libgomp.h (gomp_map_val): Add prototype.
	* oacc-parallel.c (GOACC_parallel_keyed): Use gomp_map_val instead of
	open-coding device-address calculation.
	* target.c (gomp_map_val): Make global. Use OFFSET_POINTER in
	non-present case.

Co-Authored-By: Cesar Philippidis <cesar@codesourcery.com>

From-SVN: r279622

	libgomp/
	* libgomp.h (struct splay_tree_key_s): Substitute dynamic_refcount
	field for virtual_refcount.
	(enum gomp_map_vars_kind): Add GOMP_MAP_VARS_OPENACC_ENTER_DATA.
	(gomp_free_memmap): Remove prototype.
	* oacc-init.c (acc_shutdown_1): Iteratively call gomp_remove_var
	instead of calling gomp_free_memmap.
	* oacc-mem.c (acc_map_data): Use virtual_refcount instead of
	dynamic_refcount.
	(acc_unmap_data): Open code instead of forcing target_mem_desc's
	to_free field to NULL then calling gomp_unmap_vars.  Handle
	REFCOUNT_INFINITY on target blocks.
	(goacc_enter_data): Rename to...
	(goacc_enter_datum): ...this.  Remove MAPNUM parameter and special
	handling for mapping groups.  Use virtual_refcount instead of
	dynamic_refcount.  Use GOMP_MAP_VARS_OPENACC_ENTER_DATA for
	map_map_vars_async call.  Re-do lookup for target pointer return value.
	(acc_create, acc_create_async, acc_copyin, acc_copyin_async): Call
	renamed goacc_enter_datum function.
	(goacc_exit_data): Rename to...
	(goacc_exit_datum): ...this.  Update for virtual_refcount semantics.
	(acc_delete, acc_delete_async, acc_delete_finalize,
	acc_delete_finalize_async, acc_copyout, acc_copyout_async,
	acc_copyout_finalize, acc_copyout_finalize_async): Call renamed
	goacc_exit_datum function.
	(gomp_acc_remove_pointer, find_pointer): Remove functions.
	(find_group_last, goacc_enter_data_internal, goacc_exit_data_internal):
	New functions.
	(GOACC_enter_exit_data): Use goacc_enter_data_internal and
	goacc_exit_data_internal helper functions.
	* target.c (gomp_map_vars_internal): Handle
	GOMP_MAP_VARS_OPENACC_ENTER_DATA.  Update for virtual_refcount
	semantics.
	(gomp_unmap_vars_internal): Update for virtual_refcount semantics.
	(gomp_load_image_to_device, omp_target_associate_ptr): Zero-initialise
	virtual_refcount field instead of dynamic_refcount.
	(gomp_free_memmap): Remove function.
	* testsuite/libgomp.oacc-c-c++-common/unmap-infinity-1.c: New test.
	* testsuite/libgomp.c-c++-common/unmap-infinity-2.c: New test.
	* testsuite/libgomp.oacc-c-c++-common/pr92843-1.c: Add XFAIL.

From-SVN: r279621

	libgomp/
	* libgomp.h (struct splay_tree_aux): New.
	(struct splay_tree_key_s): Replace link_key field with aux pointer.
	* target.c (gomp_map_vars_internal): Adjust for link_key being moved
	to aux struct.
	(gomp_remove_var_internal): Free aux block if present.
	(gomp_load_image_to_device): Zero-initialise aux field instead of
	link_key field.
	(omp_target_associate_pointer): Zero-initialise aux field.

Co-Authored-By: Thomas Schwinge <thomas@codesourcery.com>

From-SVN: r279620

From-SVN: r279619

2019-12-19  Vladimir Makarov  <vmakarov@redhat.com>

	PR target/92905
	* lra-constraints.c (process_alt_operands): Check offmemok when
	processing preferred_reload_class.

2019-12-19  Vladimir Makarov  <vmakarov@redhat.com>

	PR target/92905
	* gcc.target/i386/pr92905.c: New test.

From-SVN: r279596

2019-12-19  Richard Sandiford  <richard.sandiford@arm.com>

gcc/testsuite/
	* g++.dg/ext/sve-sizeless-2.C: Don't expect an error for
	alias templates.

From-SVN: r279588

2019-12-19  Andrew Stubbs  <ams@codesourcery.com>

	gcc/
	* config/gcn/gcn-valu.md
	(<convop><VEC_ALL1REG_INT_ALT:mode><VEC_ALL1REG_INT_MODE:mode>2<exec>):
	Change input predcate to gcn_alu_operand.
	(extend<VEC_ALL1REG_INT_ALT:mode><VEC_ALL1REG_INT_MODE:mode>2<exec>):
	Likewise.
	(truncv64di<mode>2): Likewise.
	(truncv64di<mode>2_exec): Likewise.
	(<convop><mode>v64di2): Likewise.
	(<convop><mode>v64di2_exec): Likewise.

From-SVN: r279587

2019-12-19  Andrew Stubbs  <ams@codesourcery.com>

	gcc/
	* config/gcn/gcn-valu.md (*plus_carry_dpp_shr_<mode>): Rename to ...
	(*plus_carry_dpp_shr_v64si): ... this, and replace all
	VEC_1REG_INT_MODE with V64SI.

From-SVN: r279584

   
Fix for PR fortran/92896 [10 Regression] [DEC] ICE in reduce_unary, at
fortran/arith.c:1283.
    
This was caused by an unintended side affect of "Allow CHARACTER literals
in assignments and data statements" (revision 277975). If the conversion
occurs in a array constructor it is rejected.

From-SVN: r279583

gcc/ChangeLog:
	* hash-map-tests.c (selftest::test_map_of_int_to_strings): New
	selftest.
	(selftest::hash_map_tests_c_tests): Call it.

From-SVN: r279582

This patch converts various "gimple *" to "const gimple *" and similar
fixes for gimple subclasses, adding is_a_helper for gimple subclasses
to support the const form of as_a, and adding a few "const" overloads
of accessors.

This is enough to make pp_gimple_stmt_1's stmt const.

gcc/ChangeLog:
	* gimple-predict.h (gimple_predict_predictor): Make "gs" param
	const.
	(gimple_predict_outcome): Likewise.
	* gimple-pretty-print.c (do_niy): Likewise.
	(dump_unary_rhs): Likewise.
	(dump_binary_rhs): Likewise.
	(dump_ternary_rhs): Likewise.
	(dump_gimple_assign): Likewise.
	(dump_gimple_return): Likewise.
	(dump_gimple_call_args): Likewise.
	(pp_points_to_solution): Make "pt" param const.
	(dump_gimple_call): Make "gs" param const.
	(dump_gimple_switch): Likewise.
	(dump_gimple_cond): Likewise.
	(dump_gimple_label): Likewise.
	(dump_gimple_goto): Likewise.
	(dump_gimple_bind): Likewise.
	(dump_gimple_try): Likewise.
	(dump_gimple_catch): Likewise.
	(dump_gimple_eh_filter): Likewise.
	(dump_gimple_eh_must_not_throw): Likewise.
	(dump_gimple_eh_else): Likewise.
	(dump_gimple_resx): Likewise.
	(dump_gimple_eh_dispatch): Likewise.
	(dump_gimple_debug): Likewise.
	(dump_gimple_omp_for): Likewise.
	(dump_gimple_omp_continue): Likewise.
	(dump_gimple_omp_single): Likewise.
	(dump_gimple_omp_taskgroup): Likewise.
	(dump_gimple_omp_target): Likewise.
	(dump_gimple_omp_teams): Likewise.
	(dump_gimple_omp_sections): Likewise.
	(dump_gimple_omp_block): Likewise.
	(dump_gimple_omp_critical): Likewise.
	(dump_gimple_omp_ordered): Likewise.
	(dump_gimple_omp_scan): Likewise.
	(dump_gimple_omp_return): Likewise.
	(dump_gimple_transaction): Likewise.
	(dump_gimple_asm): Likewise.
	(dump_gimple_phi): Make "phi" param const.
	(dump_gimple_omp_parallel): Make "gs" param const.
	(dump_gimple_omp_task): Likewise.
	(dump_gimple_omp_atomic_load): Likewise.
	(dump_gimple_omp_atomic_store): Likewise.
	(dump_gimple_mem_ops): Likewise.
	(pp_gimple_stmt_1): Likewise.  Add "const" to the various as_a <>
	casts throughout.
	* gimple-pretty-print.h (gimple_stmt_1): Make gimple * param const.
	* gimple.h (is_a_helper <const gdebug *>::test): New.
	(is_a_helper <const ggoto *>::test): New.
	(is_a_helper <const glabel *>::test): New.
	(is_a_helper <const geh_else *>::test): New.
	(is_a_helper <const geh_mnt *>::test): New.
	(is_a_helper <const gswitch *>::test): New.
	(is_a_helper <const gtry *>::test): New.
	(is_a_helper <const greturn *>::test): New.
	(gimple_call_tail_p): Make param const.
	(gimple_call_return_slot_opt_p): Likewise.
	(gimple_call_va_arg_pack_p): Likewise.
	(gimple_call_use_set): Add const overload.
	(gimple_call_clobber_set): Likewise.
	(gimple_has_lhs): Make param const.
	(gimple_bind_body): Likewise.
	(gimple_catch_handler): Likewise.
	(gimple_eh_filter_failure): Likewise.
	(gimple_eh_must_not_throw_fndecl): Likewise.
	(gimple_eh_else_n_body): Likewise.
	(gimple_eh_else_e_body): Likewise.
	(gimple_try_eval): Likewise.
	(gimple_try_cleanup): Likewise.
	(gimple_phi_arg): Add const overload.
	(gimple_phi_arg_def): Make param const.
	(gimple_phi_arg_edge): Likewise.
	(gimple_phi_arg_location): Likewise.
	(gimple_phi_arg_has_location): Likewise.
	(gimple_debug_bind_get_var): Likewise.
	(gimple_debug_bind_get_value): Likewise.
	(gimple_debug_source_bind_get_var): Likewise.
	(gimple_debug_source_bind_get_value): Likewise.
	(gimple_omp_body): Likewise.
	(gimple_omp_for_collapse): Likewise.
	(gimple_omp_for_pre_body): Likewise.
	(gimple_transaction_body): Likewise.
	* tree-eh.c (lookup_stmt_eh_lp_fn): Make param "t" const.
	(lookup_stmt_eh_lp): Likewise.
	* tree-eh.h (lookup_stmt_eh_lp_fn): Make param const.
	(lookup_stmt_eh_lp): Likewise.
	* tree-ssa-alias.h (pt_solution_empty_p): Make param const.
	* tree-ssa-structalias.c (pt_solution_empty_p): Likewise.

From-SVN: r279581

For partial SVE vectors of element X, we want to treat duplicates
of single X elements in the same way as for full vectors of X.
But if a constant instead contains a repeating pattern of X elements,
the transition from one value to the next must happen at container
boundaries rather than element boundaries.  E.g. a VNx4HI should
in that case contain the same number of constants as a VNx4SI.

Fixing this means that we need a reinterpret from the container-based
mode to the partial mode; e.g. in the above example we need a
reinterpret from VNx4SI to VNx4HI.  We can't use subregs for that
because they're forbidden by aarch64_can_change_class_mode; we should
handle them in the same way as for big-endian instead.

2019-12-19  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
	* config/aarch64/aarch64.c (aarch64_simd_valid_immediate): When
	handling partial SVE vectors, use the container mode rather than
	the element mode if the constant isn't a single-element duplicate.
	* config/aarch64/aarch64-sve.md (@aarch64_sve_reinterpret<mode>):
	Check targetm.can_change_mode_class instead of BYTES_BIG_ENDIAN.

gcc/testsuite/
	* gcc.target/aarch64/sve/mixed_size_9.c: New test.

From-SVN: r279580

From-SVN: r279579

This testcase wasn't fixed by the 66139 patch; split_nonconstant_init_1 was
failing to add a cleanup for an array member of a class (e.g. e1) that will
run if initializing a later member (e.g. e2) throws.

	* typeck2.c (split_nonconstant_init_1): Add nested parm.
	Add cleanup for whole array if true.

From-SVN: r279577

There were several overlapping PRs about failure to clean up fully
constructed subobjects when an exception is thrown during aggregate
initialization of a temporary.  I fixed this for non-temporaries in the
context of 57510, but that fix didn't handle temporaries.  So this patch
does split_nonconstant_init at gimplification time, which is much smaller
than alternatives I tried.

	PR c++/57510
	* cp-gimplify.c (cp_gimplify_init_expr): Use split_nonconstant_init.
	* typeck2.c (split_nonconstant_init): Handle non-variable dest.
	(split_nonconstant_init_1): Clear TREE_SIDE_EFFECTS.
	* tree.c (is_local_temp): New.

From-SVN: r279576

2019-12-19  Stam Markianos-Wright  <stam.markianos-wright@arm.com>

	* MAINTAINERS (write_after_approval): Add myself.

From-SVN: r279575

2019-12-19  Andrew Stubbs  <ams@codesourcery.com>

	gcc/
	* config/gcn/gcn-valu.md (addv64si3<exec_clobber>): Rename to ...
	(add<mode>3<exec_clobber>): ... this, and use VEC_ALL1REG_INT_MODE.
	(addv64si3_dup<exec_clobber>): Rename to ...
	(add<mode>3_dup<exec_clobber>): ... this, and use VEC_ALL1REG_INT_MODE.
	(subv64si3<exec_clobber>): Rename to ...
	(sub<mode>3<exec_clobber>): ... this, and use VEC_ALL1REG_INT_MODE.

From-SVN: r279574

From-SVN: r279573

When adding partial SVE modes, I'd remembered to handle reloads
in a similar way to full big-endian SVE vectors, but forgot the
just-as-important mode-change rules.

2019-12-19  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
	* config/aarch64/aarch64.c (aarch64_can_change_mode_class):
	Don't allow changes between partial SVE modes and other kinds
	of mode.  Don't allow changes between two partial SVE modes
	if they have different container or element sizes.

gcc/testsuite/
	* gcc.target/aarch64/sve/mixed_size_8.c: New test.

From-SVN: r279572

Partial SVE modes can be picked up and used by the vector_size(N)
attribute.[*] This means that we need to cope with arguments and return
values with partial SVE modes, which previously triggered asserts like:

  /* Generic vectors that map to SVE modes with -msve-vector-bits=N are
     passed by reference, not by value.  */
  gcc_assert (!aarch64_sve_mode_p (mode));

The ABI for these types is fixed from pre-SVE days, and must in any case
be the same for all -msve-vector-bits=N values.  All we need to do is
ensure that the vectors are passed and returned in the traditional way.

[*] Advanced SIMD always wins for 64-bit and 128-bit vectors though.

2019-12-19  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
	* config/aarch64/aarch64.c (aarch64_function_value_1): New function,
	split out from...
	(aarch64_function_value): ...here.  Handle partial SVE modes by
	pretending that they have the associated/traditional integer mode,
	then wrap the result in the real mode.
	(aarch64_layout_arg): Take an orig_mode argument and pass it to
	aarch64_function_arg_alignment.  Handle partial SVE modes analogously
	to aarch64_function_value.
	(aarch64_function_arg): Update call accordingly.
	(aarch64_function_arg_advance): Likewise.

gcc/testsuite/
	* gcc.target/aarch64/sve/pcs/gnu_vectors_3.c: New test.

From-SVN: r279571

From-SVN: r279570

The SVE port needs to maintain a different type identity for
GNU vectors and "SVE vectors" even during LTO, since the types
use different ABIs.  The easiest way of doing that seemed to be
to use type attributes.  However, these type attributes shouldn't
be user-facing; they're just a convenient way of representing the
types internally in GCC.

There are already several internal-only attributes, such as "fn spec"
and "omp declare simd".  They're distinguished from normal user-facing
attributes by having a space in their name, which means that it isn't
possible to write them directly in C or C++.

Taking the same approach mostly works well for SVE.  The only snag
I've hit so far is that the new attribute needs to (and only exists to)
affect type identity.  This means that it would normally get included
in mangled names, to distinguish it from types without the attribute.

However, the SVE ABI specifies a separate mangling for SVE vector types,
rather than using an attribute mangling + a normal vector mangling.
So we need some way of suppressing the attribute mangling for this case.

There are currently no other target-independent or target-specific
internal-only attributes that affect type identity, so this patch goes
for the simplest fix of skipping mangling for attributes whose names
contain a space.  Other options I thought about were:

(1) Also make sure that targetm.mangled_type returns nonnull.

(2) Check directly for the target-specific name.

(3) Add a new target hook.

(4) Add new information to attribute_spec.  This would be very invasive
    at this stage, but maybe we should consider replacing all the boolean
    fields with flags?  That should make the tables slightly easier to
    read and would make adding new flags much simpler in future.

2019-12-19  Richard Sandiford  <richard.sandiford@arm.com>

gcc/cp/
	* mangle.c (write_CV_qualifiers_for_type): Don't mangle attributes
	that contain a space.

From-SVN: r279569

	PR fortran/92977
	* frontend-passes.c (call_external_blas): Use || instead of |.

From-SVN: r279567

	* cgraph.c (cgraph_node_cannot_be_local_p_1): Prevent targets of
	symver attributes to be localized.
	* ipa-visibility.c (cgraph_externally_visible_p,
	varpool_node::externally_visible_p): Likewise.
	* symtab.c (symtab_node::verify_base): Check visibility of symbol
	versions.

	* lto-common.c (read_cgraph_and_symbols): Work around binutils
	PR25424


Co-Authored-By: Xi Ruoyao <xry111@mengyan1223.wang>

From-SVN: r279566

	* ipa-fnsummary.h (ipa_size_summary): Remove copy consturctor.
	(ipa_size_summary_t): Add duplicate method; move to heap.
	* ipa-fnsumary.c (ipa_fn_summary_alloc): Fix allocation.

From-SVN: r279563

2019-12-19  Feng Xue  <fxue@os.amperecomputing.com>

        PR ipa/92794
        * ipa-cp.c (self_recursive_agg_pass_through_p): New function.
        (intersect_with_plats): Use error_mark_node as place holder
        when aggregate jump function is simple pass-through for
        self-recursive call.
        (intersect_with_agg_replacements): Likewise.
        (intersect_aggregates_with_edge): Likewise.
        (find_aggregate_values_for_callers_subset): Likewise.

2019-12-19  Feng Xue  <fxue@os.amperecomputing.com>

        PR ipa/92794
        * gcc.dg/ipa/92794.c: New test.

From-SVN: r279561

From-SVN: r279560

I talked in the PR about possibly stripping the location from the args in
the hash table, since if we use the cache the locations would be wrong, but
didn't actually do anything about that.  Then I noticed that there's already
unshare_expr_without_location...

	* constexpr.c (cxx_eval_call_expression): Use
	unshare_expr_without_location.

From-SVN: r279557

This patch adds support for associating a diagnostic message with an
optional diagnostic_metadata object, so that plugins can add extra data
to their diagnostics (e.g. mapping a diagnostic to a taxonomy or coding
standard such as from CERT or MISRA).

Currently this only supports associating a CWE identifier with a
diagnostic (which is what I'm using for the warnings in the analyzer
patch kit), but adding a diagnostic_metadata class allows for future
growth in this area without an explosion of further "warning_at"
overloads for all of the different kinds of custom data that a plugin
might want to add.

This version of the patch renames the overly-general
-fdiagnostics-show-metadata to -fdiagnostics-show-cwe and adds test
coverage for it via a plugin.

It also adds a note to the documentation that no GCC diagnostics
currently use this; it's a feature for plugins (and, at some point,
I hope, the analyzer).

gcc/ChangeLog:
	* common.opt (fdiagnostics-show-cwe): Add.
	* diagnostic-core.h (class diagnostic_metadata): New forward decl.
	(warning_at): Add overload taking a const diagnostic_metadata &.
	(emit_diagnostic_valist): Add overload taking a
	const diagnostic_metadata *.
	* diagnostic-format-json.cc: Include "diagnostic-metadata.h".
	(json_from_metadata): New function.
	(json_end_diagnostic): Call it to add "metadata" child for
	diagnostics with metadata.
	(diagnostic_output_format_init): Clear context->show_cwe.
	* diagnostic-metadata.h: New file.
	* diagnostic.c: Include "diagnostic-metadata.h".
	(diagnostic_impl): Add const diagnostic_metadata * param.
	(diagnostic_n_impl): Likewise.
	(diagnostic_initialize): Initialize context->show_cwe.
	(diagnostic_set_info_translated): Initialize diagnostic->metadata.
	(get_cwe_url): New function.
	(print_any_cwe): New function.
	(diagnostic_report_diagnostic): Call print_any_cwe if the
	diagnostic has non-NULL metadata.
	(emit_diagnostic): Pass NULL as the metadata in the call to
	diagnostic_impl.
	(emit_diagnostic_valist): Likewise.
	(emit_diagnostic_valist): New overload taking a
	const diagnostic_metadata *.
	(inform): Pass NULL as the metadata in the call to
	diagnostic_impl.
	(inform_n): Likewise for diagnostic_n_impl.
	(warning): Likewise.
	(warning_at): Likewise.  Add overload that takes a
	const diagnostic_metadata &.
	(warning_n): Pass NULL as the metadata in the call to
	diagnostic_n_impl.
	(pedwarn): Likewise for diagnostic_impl.
	(permerror): Likewise.
	(error): Likewise.
	(error_n): Likewise.
	(error_at): Likewise.
	(sorry): Likewise.
	(sorry_at): Likewise.
	(fatal_error): Likewise.
	(internal_error): Likewise.
	(internal_error_no_backtrace): Likewise.
	* diagnostic.h (diagnostic_info::metadata): New field.
	(diagnostic_context::show_cwe): New field.
	* doc/invoke.texi (-fno-diagnostics-show-cwe): New option.
	* opts.c (common_handle_option): Handle OPT_fdiagnostics_show_cwe.
	* toplev.c (general_init): Initialize global_dc->show_cwe.

gcc/testsuite/ChangeLog:
	* gcc.dg/plugin/diagnostic-test-metadata.c: New test.
	* gcc.dg/plugin/diagnostic_plugin_test_metadata.c: New test plugin.
	* gcc.dg/plugin/plugin.exp (plugin_test_list): Add them.

From-SVN: r279556