path: root/gcc/ChangeLog.omp

2022-04-20  Andrew Stubbs  <ams@codesourcery.com>

	* omp-low.c: Do USM transformations for "unified_address".

2022-04-02  Andrew Stubbs  <ams@codesourcery.com>

	* omp-low.c (usm_transform): Transform omp_target_alloc and
	omp_target_free.

2022-03-31  Abid Qadeer  <abidh@codesourcery.com>

	* omp-low.c (lower_omp_allocate): Move allocate declaration
	inside loop.  Set it to false at the end of condition.

2022-03-30  Andrew Stubbs  <ams@codesourcery.com>

	* omp-builtins.def (BUILT_IN_GOMP_ENABLE_PINNED_MODE): New.
	* omp-low.c (omp_enable_pinned_mode): Use
	BUILT_IN_GOMP_ENABLE_PINNED_MODE.

2022-03-11  Andrew Stubbs <ams@codesourcery.com>

	Backport of the patch posted at
	https://gcc.gnu.org/pipermail/gcc-patches/2022-March/591354.html

	* omp-low.c (omp_enable_pinned_mode): New function.
	(execute_lower_omp): Call omp_enable_pinned_mode.

2022-03-11  Abid Qadeer  <abidh@codesourcery.com>

	Backport of a patch posted at
	https://gcc.gnu.org/pipermail/gcc-patches/2022-March/591353.html

	* omp-low.c (usm_transform): New function.
	(make_pass_usm_transform): Likewise.
	(class pass_usm_transform): New.
	* passes.def: Add pass_usm_transform.
	* tree-pass.h (make_pass_usm_transform): New declaration.

2022-03-10  Andrew Stubbs <ams@codesourcery.com>

	Backport of the patch posted at
	https://gcc.gnu.org/pipermail/gcc-patches/2022-March/591350.html

	* common.opt: Add -foffload-memory and its enum values.
	* coretypes.h (enum offload_memory): New.
	* doc/invoke.texi: Document -foffload-memory.

2022-03-10  Abid Qadeer  <abidh@codesourcery.com>

	* tree.c (walk_tree_1): Add case for OMP_CLAUSE_ALLOCATOR.

2022-03-09  Abid Qadeer  <abidh@codesourcery.com>

	Backport of a patch posted at
	https://gcc.gnu.org/pipermail/gcc-patches/2022-January/588372.html

	* omp-low.c (scan_sharing_clauses): Handle OMP_CLAUSE_ALLOCATOR.
	(scan_omp_allocate): New.
	(scan_omp_1_stmt): Call it.
	(lower_omp_allocate): New function.
	(lower_omp_1): Call it.

2022-03-09  Abid Qadeer  <abidh@codesourcery.com>

	Backport of a patch posted at
	https://gcc.gnu.org/pipermail/gcc-patches/2022-January/588371.html

	* doc/gimple.texi: Describe GIMPLE_OMP_ALLOCATE.
	* gimple-pretty-print.c (dump_gimple_omp_allocate): New function.
	(pp_gimple_stmt_1): Call it.
	* gimple.c (gimple_build_omp_allocate): New function.
	* gimple.def (GIMPLE_OMP_ALLOCATE): New node.
	* gimple.h (enum gf_mask): Add GF_OMP_ALLOCATE_KIND_MASK,
	GF_OMP_ALLOCATE_KIND_ALLOCATE and GF_OMP_ALLOCATE_KIND_FREE.
	(struct gomp_allocate): New.
	(is_a_helper <gomp_allocate *>::test): New.
	(is_a_helper <const gomp_allocate *>::test): New.
	(gimple_build_omp_allocate): Declare.
	(gimple_omp_subcode): Replace GIMPLE_OMP_TEAMS with
	GIMPLE_OMP_ALLOCATE.
	(gimple_omp_allocate_set_clauses): New.
	(gimple_omp_allocate_set_kind): Likewise.
	(gimple_omp_allocate_clauses): Likewise.
	(gimple_omp_allocate_kind): Likewise.
	(CASE_GIMPLE_OMP): Add GIMPLE_OMP_ALLOCATE.
	* gimplify.c (gimplify_omp_allocate): New.
	(gimplify_expr): Call it.
	* gsstruct.def (GSS_OMP_ALLOCATE): Define.

2022-03-09  Abid Qadeer  <abidh@codesourcery.com>

	Backport of a patch posted at
	https://gcc.gnu.org/pipermail/gcc-patches/2022-January/588370.html

	* tree-core.h (struct tree_base): Add comments.
	* tree-pretty-print.c (dump_generic_node): Handle allocate directive
	kind.
	* tree.h (OMP_ALLOCATE_KIND_ALLOCATE): New define.
	(OMP_ALLOCATE_KIND_FREE): Likewise.

2022-03-09  Abid Qadeer  <abidh@codesourcery.com>

	Backport of a patch posted at
	https://gcc.gnu.org/pipermail/gcc-patches/2022-January/588369.html

	* tree-pretty-print.c (dump_omp_clause): Handle OMP_CLAUSE_ALLOCATOR.
	(dump_generic_node): Handle OMP_ALLOCATE.
	* tree.def (OMP_ALLOCATE): New.
	* tree.h (OMP_ALLOCATE_CLAUSES): Likewise.
	(OMP_ALLOCATE_DECL): Likewise.
	(OMP_ALLOCATE_ALLOCATOR): Likewise.
	* tree.c (omp_clause_num_ops): Add entry for OMP_CLAUSE_ALLOCATOR.

2022-03-08  Abid Qadeer  <abidh@codesourcery.com>

	* omp-low.c (omp_maybe_offloaded_ctx): New prototype.
	(scan_sharing_clauses):  Check a restriction on allocate clause.

2022-02-27  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-11-15  Jakub Jelinek  <jakub@redhat.com>

	* gimplify.c (optimize_target_teams): Only add OMP_CLAUSE_THREAD_LIMIT
	to OMP_TARGET_CLAUSES if it isn't there already.

2022-02-27  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-11-11  Jakub Jelinek  <jakub@redhat.com>

	* tree.h (OMP_CLAUSE_NUM_TEAMS_EXPR): Rename to ...
	(OMP_CLAUSE_NUM_TEAMS_UPPER_EXPR): ... this.
	(OMP_CLAUSE_NUM_TEAMS_LOWER_EXPR): Define.
	* tree.c (omp_clause_num_ops): Increase num ops for
	OMP_CLAUSE_NUM_TEAMS to 2.
	* tree-pretty-print.c (dump_omp_clause): Print optional lower bound
	for OMP_CLAUSE_NUM_TEAMS.
	* gimplify.c (gimplify_scan_omp_clauses): Gimplify
	OMP_CLAUSE_NUM_TEAMS_LOWER_EXPR if non-NULL.
	(optimize_target_teams): Use OMP_CLAUSE_NUM_TEAMS_UPPER_EXPR instead
	of OMP_CLAUSE_NUM_TEAMS_EXPR.  Handle OMP_CLAUSE_NUM_TEAMS_LOWER_EXPR.
	* omp-low.c (lower_omp_teams): Use OMP_CLAUSE_NUM_TEAMS_UPPER_EXPR
	instead of OMP_CLAUSE_NUM_TEAMS_EXPR.
	* omp-expand.c (expand_teams_call, get_target_arguments): Likewise.

2022-02-27  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-10-30  Tobias Burnus  <tobias@codesourcery.com>

	PR middle-end/102972
	* omp-low.c (omp_runtime_api_call): Use DECL_ASSEMBLER_NAME to get
	internal Fortran name; new permit_num_teams arg to permit
	omp_get_num_teams and omp_get_team_num.
	(scan_omp_1_stmt): Update call to it, add missing call for
	reverse offload, and check for strictly nested API calls in teams.

2022-02-11  Kwok Cheung Yeung  <kcy@codesourcery.com>

	* omp-general.c (DELAY_METADIRECTIVES_AFTER_LTO): Check that cfun is
	non-null before derefencing.

2022-01-28  Kwok Cheung Yeung  <kcy@codesourcery.com>

	* gimplify.c (gimplify_omp_metadirective): Mark offloadable functions
	containing metadirectives with 'construct={target}' in the selector.
	* omp-general.c (omp_has_target_constructor_p): New.
	* omp-general.h (omp_has_target_constructor_p): New prototype.
	* omp-low.c (lower_omp_1): Emit warning if marked functions called
	outside of a target context.

2022-01-25  Kwok Cheung Yeung  <kcy@codesourcery.com>

	* builtin-types.def (BT_FN_BOOL_INT_CONST_PTR_CONST_PTR_CONST_PTR): New
	type.
	* omp-builtins.def (BUILT_IN_GOMP_EVALUATE_TARGET_DEVICE): New builtin.
	* omp-general.c (omp_context_selector_matches): Handle 'target_device'
	selector set.
	(omp_dynamic_cond): Generate expression tree for 'target_device'
	selector set.
	(omp_context_compute_score): Handle selectors in 'target_device' set.

2022-01-25  Kwok Cheung Yeung  <kcy@codesourcery.com>

	* omp-general.c (omp_dynamic_cond): Do not return user condition if
	constant.

2022-01-25  Kwok Cheung Yeung  <kcy@codesourcery.com>

	* omp-general.c (omp_check_context_selector): Revert string length
	check.
	(omp_context_name_list_prop): Likewise.

2022-01-25  Kwok Cheung Yeung  <kcy@codesourcery.com>

	* Makefile.in (OBJS): Add omp-expand-metadirective.o.
	* gimple-streamer-in.c (input_gimple_stmt): Add case for
	GIMPLE_OMP_METADIRECTIVE.  Handle metadirective labels.
	* gimple-streamer-out.c (output_gimple_stmt): Likewise.
	* omp-expand-metadirective.cc: New.
	* passes.def: Add pass_omp_expand_metadirective.
	* tree-pass.h (make_pass_omp_expand_metadirective): New prototype.

2022-01-25  Kwok Cheung Yeung  <kcy@codesourcery.com>

	* gimplify.c (expand_omp_metadirective): New.
	* omp-general.c: Include tree-pretty-print.h.
	(DELAY_METADIRECTIVES_AFTER_LTO): New macro.
	(omp_context_selector_matches): Delay resolution of selectors.  Allow
	non-constant expressions.
	(omp_dynamic_cond): New.
	(omp_dynamic_selector_p): New.
	(sort_variant): New.
	(omp_get_dynamic_candidates): New.
	(omp_resolve_metadirective): New.
	(omp_resolve_metadirective): New.
	* omp-general.h (struct omp_metadirective_variant): New.
	(omp_resolve_metadirective): New prototype.

2022-01-25  Kwok Cheung Yeung  <kcy@codesourcery.com>

	* gimple-low.c (lower_omp_metadirective): New.
	(lower_stmt): Handle GIMPLE_OMP_METADIRECTIVE.
	* gimple-pretty-print.c (dump_gimple_omp_metadirective): New.
	(pp_gimple_stmt_1): Handle GIMPLE_OMP_METADIRECTIVE.
	* gimple-walk.c (walk_gimple_op): Handle GIMPLE_OMP_METADIRECTIVE.
	(walk_gimple_stmt): Likewise.
	* gimple.c (gimple_alloc_omp_metadirective): New.
	(gimple_build_omp_metadirective): New.
	(gimple_build_omp_metadirective_variant): New.
	* gimple.def (GIMPLE_OMP_METADIRECTIVE): New.
	(GIMPLE_OMP_METADIRECTIVE_VARIANT): New.
	* gimple.h (gomp_metadirective_variant): New.
	(gomp_metadirective): New.
	(is_a_helper <gomp_metadirective *>::test): New.
	(is_a_helper <gomp_metadirective_variant *>::test): New.
	(is_a_helper <const gomp_metadirective *>::test): New.
	(is_a_helper <const gomp_metadirective_variant *>::test): New.
	(gimple_alloc_omp_metadirective): New prototype.
	(gimple_build_omp_metadirective): New prototype.
	(gimple_build_omp_metadirective_variant): New prototype.
	(gimple_has_substatements): Add GIMPLE_OMP_METADIRECTIVE case.
	(gimple_has_ops): Add GIMPLE_OMP_METADIRECTIVE.
	(gimple_omp_metadirective_label): New.
	(gimple_omp_metadirective_set_label): New.
	(gimple_omp_metadirective_variants): New.
	(gimple_omp_metadirective_set_variants): New.
	(CASE_GIMPLE_OMP): Add GIMPLE_OMP_METADIRECTIVE.
	* gimplify.c (is_gimple_stmt): Add OMP_METADIRECTIVE.
	(expand_omp_metadirective): New.
	(gimplify_omp_metadirective): New.
	(gimplify_expr): Add case for OMP_METADIRECTIVE.
	* gsstruct.def (GSS_OMP_METADIRECTIVE): New.
	(GSS_OMP_METADIRECTIVE_VARIANT): New.
	* omp-expand.c (build_omp_regions_1): Handle GIMPLE_OMP_METADIRECTIVE.
	(omp_make_gimple_edges): Likewise.
	* omp-low.c (struct omp_context): Add next_clone field.
	(new_omp_context): Initialize next_clone field.
	(clone_omp_context): New.
	(delete_omp_context): Delete clone contexts.
	(scan_omp_metadirective): New.
	(scan_omp_1_stmt): Handle GIMPLE_OMP_METADIRECTIVE.
	(lower_omp_metadirective): New.
	(lower_omp_1): Handle GIMPLE_OMP_METADIRECTIVE.
	* tree-cfg.c (cleanup_dead_labels): Handle GIMPLE_OMP_METADIRECTIVE.
	(gimple_redirect_edge_and_branch): Likewise.
	* tree-inline.c (remap_gimple_stmt): Handle GIMPLE_OMP_METADIRECTIVE.
	(estimate_num_insns): Likewise.
	* tree-pretty-print.c (dump_generic_node): Handle OMP_METADIRECTIVE.
	* tree-ssa-operands.c (parse_ssa_operands): Handle
	GIMPLE_OMP_METADIRECTIVE.

2022-01-25  Kwok Cheung Yeung  <kcy@codesourcery.com>

	* omp-general.c (omp_context_selector_matches): Add extra argument.
	(omp_resolve_metadirective): New stub function.
	* omp-general.h (struct omp_metadirective_variant): New.
	(omp_context_selector_matches): Add extra argument.
	(omp_resolve_metadirective): New prototype.
	* tree.def (OMP_METADIRECTIVE): New.
	* tree.h (OMP_METADIRECTIVE_CLAUSES): New macro.

2022-01-25  Kwok Cheung Yeung  <kcy@codesourcery.com>

	Backport from master:
	2021-06-10  Richard Biener  <rguenther@suse.de>

	* system.h (gcc_stablesort_r): Declare.
	* sort.cc (gcc_sort_r): Support stable sort.
	(gcc_stablesort_r): Define.
	* vec.h (vec<>::stablesort): Add.

2022-01-19  Marcel Vollweiler  <marcel@codesourcery.com>

	Backport from master:
	* config/gcn/icv-device.c: Make GOMP_DEVICE_NUM_VAR public (remove
	"static") to make the device num available in the offload image.

2021-12-22  Andrew Stubbs  <ams@codesourcery.com>

	Backport from master:
	* config/gcn/mkoffload.c (process_asm): Process the variable table
	completely differently.
	(process_obj): Encode the varaible data differently.

2021-12-22  Andrew Stubbs  <ams@codesourcery.com>

	* config/nvptx/nvptx-opts.h (ptx_version): Change PTX_VERSION_3_1 to
	PTX_VERSION_4_1.
	* config/nvptx/nvptx.c (nvptx_file_start): Bump minimum PTX version
	to 4.1.
	* config/nvptx/nvptx.opt (ptx_version): Add 4.1. Change default.
	doc/invoke.texi: -mptx default is now 4.1.

2021-11-02  Tobias Burnus  <tobias@codesourcery.com>

	Backport from master:
	2021-10-30  Jakub Jelinek  <jakub@redhat.com>

	* gimplify.c (gimplify_omp_for): Diagnose threadprivate iterators.

2021-10-27  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-10-27  Jakub Jelinek  <jakub@redhat.com>

	* omp-expand.c (expand_omp_for_init_counts): Handle non-rectangular
	iterators with pointer types.
	(expand_omp_for_init_vars, extract_omp_for_update_vars): Likewise.

2021-10-15  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-10-14  Kwok Cheung Yeung  <kcy@codesourcery.com>

	* omp-general.c (omp_check_context_selector):  Move from c-omp.c.
	(omp_mark_declare_variant): Move from c-omp.c.
	(omp_context_name_list_prop): Update for Fortran strings.
	* omp-general.h (omp_check_context_selector): New prototype.
	(omp_mark_declare_variant): New prototype.

2021-10-12  Julian Brown  <julian@codesourcery.com>

	Revert:

	2019-09-10  Chung-Lin Tang  <cltang@codesourcery.com>

	* config/nvptx/nvptx.c (nvptx_expand_to_rtl_hook): New function
	implementing CUDA .params space transformation.
	(TARGET_EXPAND_TO_RTL_HOOK): implement hook with
	nvptx_expand_to_rtl_hook.

2021-10-12  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-10-12  Jakub Jelinek  <jakub@redhat.com>

	* gimple-fold.h (clear_padding_type_may_have_padding_p): Declare.
	* gimple-fold.c (clear_padding_type_may_have_padding_p): No longer
	static.

2021-10-11  Marcel Vollweiler  <marcel@codesourcery.com>

	Backported from master:
	2021-10-11  Marcel Vollweiler  <marcel@codesourcery.com>

	* allocator.c (omp_init_allocator): Replace omp_atv_sequential with
	omp_atv_serialized.
	* omp.h.in: Add deprecated flag for omp_atv_sequential.
	* omp_lib.f90.in: Add deprecated flag for omp_atv_sequential.
	* testsuite/libgomp.c-c++-common/alloc-10.c: New test.
	* testsuite/libgomp.fortran/alloc-12.f90: New test.

2021-10-11  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-10-11  Jakub Jelinek  <jakub@redhat.com>

	* omp-low.c (omp_runtime_api_call): Handle omp_get_max_teams,
	omp_[sg]et_teams_thread_limit and omp_set_num_teams.

2021-10-01  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-10-01  Jakub Jelinek  <jakub@redhat.com>

	* tree.h (OMP_CLAUSE_ORDER_REPRODUCIBLE): Define.
	* tree-pretty-print.c (dump_omp_clause) <case OMP_CLAUSE_ORDER>: Print
	reproducible: for OMP_CLAUSE_ORDER_REPRODUCIBLE.
	* omp-general.c (omp_extract_for_data): If OMP_CLAUSE_ORDER is seen
	without OMP_CLAUSE_ORDER_UNCONSTRAINED, overwrite sched_kind to
	OMP_CLAUSE_SCHEDULE_STATIC.

2021-09-30  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-09-30  Tobias Burnus  <tobias@codesourcery.com>

	* omp-low.c (omp_runtime_api_call): Add omp_aligned_{,c}alloc and
	omp_{c,re}alloc, fix omp_alloc/omp_free.

2021-09-29  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-09-29  Jakub Jelinek  <jakub@redhat.com>

	PR middle-end/102504
	* gimplify.c (gimplify_scan_omp_clauses): Use omp_check_private even
	in OMP_SCOPE clauses, not just on worksharing construct clauses.

2021-09-28  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-09-28  Jakub Jelinek  <jakub@redhat.com>

	PR middle-end/102492
	* gimplify.c (gimplify_adjust_omp_clauses_1): Don't call the
	omp_finish_clause langhook on implicitly added OMP_CLAUSE_PRIVATE
	clauses on SIMD constructs.
	* g++.dg/gomp/simd-3.C: New test.

2021-09-24  Marcel Vollweiler  <marcel@codesourcery.com>

	This patch removes the expectation that 'requires reverse_offload' is
	unsupported from some 'target device ancester' tests which were introduced in
	commit 03be3cfeef7b3811acb6c4a8da2fc5c1e25d3e4c. This is necessary since
	commit f5bfc65f9a6e1f69b17d3740d043d2fbda339e05 changed the behaviour for
	reverse_offload.

	* c-c++-common/gomp/target-device-ancestor-2.c: Remove message for unsupported
	reverse offload.
	* c-c++-common/gomp/target-device-ancestor-3.c: Likewise.
	* c-c++-common/gomp/target-device-ancestor-4.c: Likewise.

2021-09-22  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-09-22  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/55534
	* doc/invoke.texi (-Wno-missing-include-dirs.): Document Fortran
	behavior.

2021-09-22  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-09-22  Tobias Burnus  <tobias@codesourcery.com>

	* trans-expr.c (gfc_simple_for_loop): New.
	* trans.h (gfc_simple_for_loop): New prototype.

2021-09-22  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-09-22  Jakub Jelinek  <jakub@redhat.com>

	PR middle-end/102415
	* omp-expand.c (expand_omp_single): If region->exit is NULL,
	assert region->entry is GIMPLE_OMP_SCOPE region and return.

2021-09-22  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-09-22  Jakub Jelinek  <jakub@redhat.com>

	* tree.h (OMP_CLAUSE_ALLOCATE_ALIGN): Define.
	* tree.c (omp_clause_num_ops): Change number of OMP_CLAUSE_ALLOCATE
	arguments from 2 to 3.
	* tree-pretty-print.c (dump_omp_clause): Print allocator() around
	allocate clause allocator and print align if present.
	* omp-low.c (scan_sharing_clauses): Force allocate_map entry even
	for omp_default_mem_alloc if align modifier is present.  If align
	modifier is present, use TREE_LIST to encode both allocator and
	align.
	(lower_private_allocate, lower_rec_input_clauses, create_task_copyfn):
	Handle align modifier on allocator clause if present.

2021-09-20  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-09-18  Jakub Jelinek  <jakub@redhat.com>

	* tree.h (OMP_CLAUSE_ORDER_UNCONSTRAINED): Define.
	* tree-pretty-print.c (dump_omp_clause): Print unconstrained:
	for OMP_CLAUSE_ORDER_UNCONSTRAINED.

2021-09-20  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-09-18  Jakub Jelinek  <jakub@redhat.com>

	* gimplify.c (omp_default_clause): For C/C++ default({,first}private),
	if file/namespace scope variable doesn't have predetermined sharing,
	treat it as if there was default(none).

2021-09-14  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-09-14  Jakub Jelinek  <jakub@redhat.com>

	* gimplify.c (goa_stabilize_expr): Add depth argument, propagate
	it to recursive calls, for depth above 7 just gimplify or return.
	Perform a test even for MODIFY_EXPR, ADDR_EXPR, COMPOUND_EXPR with
	__builtin_clear_padding and TARGET_EXPR.
	(gimplify_omp_atomic): Adjust goa_stabilize_expr callers.

2021-09-13  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-09-10  Jakub Jelinek  <jakub@redhat.com>

	* tree-core.h (enum omp_memory_order): Add OMP_MEMORY_ORDER_MASK,
	OMP_FAIL_MEMORY_ORDER_UNSPECIFIED, OMP_FAIL_MEMORY_ORDER_RELAXED,
	OMP_FAIL_MEMORY_ORDER_ACQUIRE, OMP_FAIL_MEMORY_ORDER_RELEASE,
	OMP_FAIL_MEMORY_ORDER_ACQ_REL, OMP_FAIL_MEMORY_ORDER_SEQ_CST and
	OMP_FAIL_MEMORY_ORDER_MASK enumerators.
	(OMP_FAIL_MEMORY_ORDER_SHIFT): Define.
	* gimple-pretty-print.c (dump_gimple_omp_atomic_load,
	dump_gimple_omp_atomic_store): Print [weak] for weak atomic
	load/store.
	* gimple.h (enum gf_mask): Change GF_OMP_ATOMIC_MEMORY_ORDER
	to 6-bit mask, adjust GF_OMP_ATOMIC_NEED_VALUE value and add
	GF_OMP_ATOMIC_WEAK.
	(gimple_omp_atomic_weak_p, gimple_omp_atomic_set_weak): New inline
	functions.
	* tree.h (OMP_ATOMIC_WEAK): Define.
	* tree-pretty-print.c (dump_omp_atomic_memory_order): Adjust for
	fail memory order being encoded in the same enum and also print
	fail clause if present.
	(dump_generic_node): Print weak clause if OMP_ATOMIC_WEAK.
	* gimplify.c (goa_stabilize_expr): Add target_expr and rhs arguments,
	handle pre_p == NULL case as a test mode that only returns value
	but doesn't change gimplify nor change anything otherwise, adjust
	recursive calls, add MODIFY_EXPR, ADDR_EXPR, COND_EXPR, TARGET_EXPR
	and CALL_EXPR handling, adjust COMPOUND_EXPR handling for
	__builtin_clear_padding calls, for !rhs gimplify as lvalue rather
	than rvalue.
	(gimplify_omp_atomic): Adjust goa_stabilize_expr caller.  Handle
	COND_EXPR rhs.  Set weak flag on gimple load/store for
	OMP_ATOMIC_WEAK.
	* omp-expand.c (omp_memory_order_to_fail_memmodel): New function.
	(omp_memory_order_to_memmodel): Adjust for fail clause encoded
	in the same enum.
	(expand_omp_atomic_cas): New function.
	(expand_omp_atomic_pipeline): Use omp_memory_order_to_fail_memmodel
	function.
	(expand_omp_atomic): Attempt to optimize atomic compare and exchange
	using expand_omp_atomic_cas.

2021-09-13  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-09-06  Tobias Burnus  <tobias@codesourcery.com>

	* doc/invoke.texi (-foffload-options): Fix @opindex.

2021-09-07  Marcel Vollweiler  <marcel@codesourcery.com>

	Backported from master:
	2021-09-07  Marcel Vollweiler  <marcel@codesourcery.com>

	* c-omp.c (c_finish_omp_flush): Handle MEMMODEL_SEQ_CST.
	* c-parser.c (c_parser_omp_flush): Parse 'seq_cst' clause on 'flush'
	directive.
	* parser.c (cp_parser_omp_flush): Parse 'seq_cst' clause on 'flush'
	directive.
	* semantics.c (finish_omp_flush): Handle MEMMODEL_SEQ_CST.
	* openmp.c (gfc_match_omp_flush): Parse 'seq_cst' clause on 'flush'
	directive.
	* trans-openmp.c (gfc_trans_omp_flush): Handle OMP_MEMORDER_SEQ_CST.
	* c-c++-common/gomp/flush-1.c: Add test case for 'seq_cst'.
	* c-c++-common/gomp/flush-2.c: Add test case for 'seq_cst'.
	* g++.dg/gomp/attrs-1.C: Adapt test to handle all flush clauses.
	* g++.dg/gomp/attrs-2.C: Adapt test to handle all flush clauses.
	* gfortran.dg/gomp/flush-1.f90: Add test case for 'seq_cst'.
	* gfortran.dg/gomp/flush-2.f90: Add test case for 'seq_cst'.

2021-09-03  Tobias Burnus  <tobias@codesourcery.com>

	2021-09-03  Jakub Jelinek  <jakub@redhat.com>

	* omp-expand.c (expand_omp_atomic_pipeline): Use
	IFN_ATOMIC_COMPARE_EXCHANGE instead of
	BUILT_IN_SYNC_VAL_COMPARE_AND_SWAP_? so that memory order
	can be provided.

2021-09-02  Marcel Vollweiler  <marcel@codesourcery.com>

	Backported from master:
	2021-09-02  Marcel Vollweiler  <marcel@codesourcery.com>

	* gfortran.dg/gomp/target-device-ancestor-4.f90: Comment out dg-final to avoid
	UNRESOLVED.

2021-08-31  Marcel Vollweiler  <marcel@codesourcery.com>

	Backported from master:
	2021-08-31  Marcel Vollweiler  <marcel@codesourcery.com>

	* c-parser.c (c_parser_omp_clause_device): Parse device-modifiers 'device_num'
	and 'ancestor' in 'target device' clauses.
	* parser.c (cp_parser_omp_clause_device): Parse device-modifiers 'device_num'
	and 'ancestor' in 'target device' clauses.
	* semantics.c (finish_omp_clauses): Error handling. Constant device ids must
	evaluate to '1' if 'ancestor' is used.
	* gfortran.h: Add variable for 'ancestor' in struct gfc_omp_clauses.
	* openmp.c (gfc_match_omp_clauses): Parse device-modifiers 'device_num'
	and 'ancestor' in 'target device' clauses.
	* trans-openmp.c (gfc_trans_omp_clauses): Set OMP_CLAUSE_DEVICE_ANCESTOR.
	* gimplify.c (gimplify_scan_omp_clauses): Error handling. 'ancestor' only
	allowed on target constructs and only with particular other clauses.
	* omp-expand.c (expand_omp_target): Output of 'sorry, not supported' if
	'ancestor' is used.
	* omp-low.c (check_omp_nesting_restrictions): Error handling. No nested OpenMP
	structs when 'ancestor' is used.
	(scan_omp_1_stmt): No usage of OpenMP runtime routines in a target region when
	'ancestor' is used.
	* tree-pretty-print.c (dump_omp_clause): Append 'ancestor'.
	* tree.h (OMP_CLAUSE_DEVICE_ANCESTOR): Define macro.
	* c-c++-common/gomp/target-device-1.c: New test.
	* c-c++-common/gomp/target-device-2.c: New test.
	* c-c++-common/gomp/target-device-ancestor-1.c: New test.
	* c-c++-common/gomp/target-device-ancestor-2.c: New test.
	* c-c++-common/gomp/target-device-ancestor-3.c: New test.
	* c-c++-common/gomp/target-device-ancestor-4.c: New test.
	* gfortran.dg/gomp/target-device-1.f90: New test.
	* gfortran.dg/gomp/target-device-2.f90: New test.
	* gfortran.dg/gomp/target-device-ancestor-1.f90: New test.
	* gfortran.dg/gomp/target-device-ancestor-2.f90: New test.
	* gfortran.dg/gomp/target-device-ancestor-3.f90: New test.
	* gfortran.dg/gomp/target-device-ancestor-4.f90: New test.

2021-08-23  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-08-23  Jakub Jelinek  <jakub@redhat.com>

	* tree.h (OMP_CLAUSE_GRAINSIZE_STRICT): Define.
	(OMP_CLAUSE_NUM_TASKS_STRICT): Define.
	* tree-pretty-print.c (dump_omp_clause) <case OMP_CLAUSE_GRAINSIZE,
	case OMP_CLAUSE_NUM_TASKS>: Print strict: modifier.
	* omp-expand.c (expand_task_call): Use GOMP_TASK_FLAG_STRICT in iflags
	if either grainsize or num_tasks clause has the strict modifier.

2021-08-20  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-08-20  Jakub Jelinek  <jakub@redhat.com>

	* omp-builtins.def (BUILT_IN_GOMP_WARNING, BUILT_IN_GOMP_ERROR): New
	builtins.

2021-08-17  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-08-17  Jakub Jelinek  <jakub@redhat.com>

	* tree.def (OMP_SCOPE): New tree code.
	* tree.h (OMP_SCOPE_BODY, OMP_SCOPE_CLAUSES): Define.
	* tree-nested.c (convert_nonlocal_reference_stmt,
	convert_local_reference_stmt, convert_gimple_call): Handle
	GIMPLE_OMP_SCOPE.
	* tree-pretty-print.c (dump_generic_node): Handle OMP_SCOPE.
	* gimple.def (GIMPLE_OMP_SCOPE): New gimple code.
	* gimple.c (gimple_build_omp_scope): New function.
	(gimple_copy): Handle GIMPLE_OMP_SCOPE.
	* gimple.h (gimple_build_omp_scope): Declare.
	(gimple_has_substatements): Handle GIMPLE_OMP_SCOPE.
	(gimple_omp_scope_clauses, gimple_omp_scope_clauses_ptr,
	gimple_omp_scope_set_clauses): New inline functions.
	(CASE_GIMPLE_OMP): Add GIMPLE_OMP_SCOPE.
	* gimple-pretty-print.c (dump_gimple_omp_scope): New function.
	(pp_gimple_stmt_1): Handle GIMPLE_OMP_SCOPE.
	* gimple-walk.c (walk_gimple_stmt): Likewise.
	* gimple-low.c (lower_stmt): Likewise.
	* gimplify.c (is_gimple_stmt): Handle OMP_MASTER.
	(gimplify_scan_omp_clauses): For task reductions, handle OMP_SCOPE
	like ORT_WORKSHARE constructs.  Adjust diagnostics for %<scope%>
	allowing task reductions.  Reject inscan reductions on scope.
	(omp_find_stores_stmt): Handle GIMPLE_OMP_SCOPE.
	(gimplify_omp_workshare, gimplify_expr): Handle OMP_SCOPE.
	* tree-inline.c (remap_gimple_stmt): Handle GIMPLE_OMP_SCOPE.
	(estimate_num_insns): Likewise.
	* omp-low.c (build_outer_var_ref): Look through GIMPLE_OMP_SCOPE
	contexts if var isn't privatized there.
	(check_omp_nesting_restrictions): Handle GIMPLE_OMP_SCOPE.
	(scan_omp_1_stmt): Likewise.
	(maybe_add_implicit_barrier_cancel): Look through outer
	scope constructs.
	(lower_omp_scope): New function.
	(lower_omp_task_reductions): Handle OMP_SCOPE.
	(lower_omp_1): Handle GIMPLE_OMP_SCOPE.
	(diagnose_sb_1, diagnose_sb_2): Likewise.
	* omp-expand.c (expand_omp_single): Support also GIMPLE_OMP_SCOPE.
	(expand_omp): Handle GIMPLE_OMP_SCOPE.
	(omp_make_gimple_edges): Likewise.
	* omp-builtins.def (BUILT_IN_GOMP_SCOPE_START): New built-in.

2021-08-16  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-08-16  Tobias Burnus  <tobias@codesourcery.com>

	PR middle-end/101931
	* omp-low.c (omp_runtime_api_call): Update for routines
	added in the meanwhile.

2021-08-16  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-08-12  Jakub Jelinek  <jakub@redhat.com>

	* tree.def (OMP_MASKED): New tree code.
	* tree-core.h (enum omp_clause_code): Add OMP_CLAUSE_FILTER.
	* tree.h (OMP_MASKED_BODY, OMP_MASKED_CLAUSES, OMP_MASKED_COMBINED,
	OMP_CLAUSE_FILTER_EXPR): Define.
	* tree.c (omp_clause_num_ops): Add OMP_CLAUSE_FILTER entry.
	(omp_clause_code_name): Likewise.
	(walk_tree_1): Handle OMP_CLAUSE_FILTER.
	* tree-nested.c (convert_nonlocal_omp_clauses,
	convert_local_omp_clauses): Handle OMP_CLAUSE_FILTER.
	(convert_nonlocal_reference_stmt, convert_local_reference_stmt,
	convert_gimple_call): Handle GIMPLE_OMP_MASTER.
	* tree-pretty-print.c (dump_omp_clause): Handle OMP_CLAUSE_FILTER.
	(dump_generic_node): Handle OMP_MASTER.
	* gimple.def (GIMPLE_OMP_MASKED): New gimple code.
	* gimple.c (gimple_build_omp_masked): New function.
	(gimple_copy): Handle GIMPLE_OMP_MASKED.
	* gimple.h (gimple_build_omp_masked): Declare.
	(gimple_has_substatements): Handle GIMPLE_OMP_MASKED.
	(gimple_omp_masked_clauses, gimple_omp_masked_clauses_ptr,
	gimple_omp_masked_set_clauses): New inline functions.
	(CASE_GIMPLE_OMP): Add GIMPLE_OMP_MASKED.
	* gimple-pretty-print.c (dump_gimple_omp_masked): New function.
	(pp_gimple_stmt_1): Handle GIMPLE_OMP_MASKED.
	* gimple-walk.c (walk_gimple_stmt): Likewise.
	* gimple-low.c (lower_stmt): Likewise.
	* gimplify.c (is_gimple_stmt): Handle OMP_MASTER.
	(gimplify_scan_omp_clauses): Handle OMP_CLAUSE_FILTER.  For clauses
	that take one expression rather than decl or constant, force
	gimplification of that into a SSA_NAME or temporary unless min
	invariant.
	(gimplify_adjust_omp_clauses): Handle OMP_CLAUSE_FILTER.
	(gimplify_expr): Handle OMP_MASKED.
	* tree-inline.c (remap_gimple_stmt): Handle GIMPLE_OMP_MASKED.
	(estimate_num_insns): Likewise.
	* omp-low.c (scan_sharing_clauses): Handle OMP_CLAUSE_FILTER.
	(check_omp_nesting_restrictions): Handle GIMPLE_OMP_MASKED.  Adjust
	diagnostics for existence of masked construct.
	(scan_omp_1_stmt, lower_omp_master, lower_omp_1, diagnose_sb_1,
	diagnose_sb_2): Handle GIMPLE_OMP_MASKED.
	* omp-expand.c (expand_omp_synch, expand_omp, omp_make_gimple_edges):
	Likewise.

2021-08-16  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-08-12  Tobias Burnus  <tobias@codesourcery.com>

	* tree-core.h (omp_clause_proc_bind_kind): Add
	OMP_CLAUSE_PROC_BIND_PRIMARY.
	* tree-pretty-print.c (dump_omp_clause): Add TODO comment to
	change 'master' to 'primary' in proc_bind for OpenMP 5.1.

2021-07-26  Thomas Schwinge  <thomas@codesourcery.com>

	Backported from master:
	2021-07-12  Martin Liska  <mliska@suse.cz>

	PR sanitizer/101425
	* gcc.c (check_offload_target_name): Call
	  candidates_list_and_hint only if we have a candidate.

	Backported from master:
	2021-06-30  Tobias Burnus  <tobias@codesourcery.com>

	* common.opt (foffload): Remove help as Driver only.
	* gcc.c (display_help): Add -foffload.

	Backported from master:
	2021-06-30  Tobias Burnus  <tobias@codesourcery.com>

	* gcc.c (close_at_file, execute): Replace alloca by XALLOCAVEC.
	(check_offload_target_name): Fix splitting OFFLOAD_TARGETS into
	a candidate list; better inform no offload target is configured
	and fix hint extraction when passed target is not '\0' at [len].
	* common.opt (foffload): Add tailing '.'.
	(foffload-options): Likewise; fix flag name in the help string.

2021-07-20  Andrew Stubbs  <ams@codesourcery.com>

	Backport from master:
	PR target/100208
	* config/gcn/gcn-hsa.h (DRIVER_SELF_SPECS): New.
	(ASM_SPEC): Set -mattr for xnack and sram-ecc.
	* config/gcn/gcn-opts.h (enum sram_ecc_type): New.
	* config/gcn/gcn-valu.md: Add a warning comment.
	* config/gcn/gcn.c (gcn_option_override): Add "sorry" for -mxnack.
	(output_file_start): Add xnack and sram-ecc state to ".amdgcn_target".
	* config/gcn/gcn.md: Add a warning comment.
	* config/gcn/gcn.opt: Add -mxnack and -msram-ecc.
	* config/gcn/mkoffload.c (EF_AMDGPU_MACH_AMDGCN_GFX908): Remove
	SRAM-ECC flag.
	(EF_AMDGPU_XNACK): New.
	(EF_AMDGPU_SRAM_ECC): New.
	(elf_flags): New.
	(copy_early_debug_info): Use elf_flags.
	(main): Handle -mxnack and -msram-ecc options.
	* doc/invoke.texi: Document -mxnack and -msram-ecc.

2021-06-29  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-06-29  Tobias Burnus  <tobias@codesourcery.com>

	* gcc.c (check_offload_target_name): Cast len argument to
	%q.*s to 'int'; avoid -Wstringop-truncation warning.

2021-06-29  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-06-29  Tobias Burnus  <tobias@codesourcery.com>

	PR other/67300
	* common.opt (-foffload=): Update description.
	(-foffload-options=): New.
	* doc/invoke.texi (C Language Options): Document
	-foffload and -foffload-options.
	* gcc.c (check_offload_target_name): New, split off from
	handle_foffload_option.
	(check_foffload_target_names): New.
	(handle_foffload_option): Handle -foffload=default.
	(driver_handle_option): Update for -foffload-options.
	* lto-opts.c (lto_write_options): Use -foffload-options
	instead of -foffload.
	* lto-wrapper.c (merge_and_complain, append_offload_options):
	Likewise.
	* opts.c (common_handle_option): Likewise.

2021-06-29  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-06-29  Tobias Burnus  <tobias@codesourcery.com>

	* doc/invoke.texi (C Language Options): Sort options
	alphabetically in optlist and also the description itself.
	Remove leftover -fallow-single-precision from and add missing
	-fgnu-tm to the optlist.

2021-06-23  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-06-23  Jakub Jelinek  <jakub@redhat.com>

	PR middle-end/101167
	* omp-low.c (lower_omp_regimplify_p): Regimplify also PARM_DECLs
	and RESULT_DECLs that have DECL_HAS_VALUE_EXPR_P set.

2021-06-22  Marcel Vollweiler  <marcel@codesourcery.com>

	gcc/configure.ac: fix register issue for global_load assembler functions

	* config.in: Regenerate.
	* config/gcn/gcn.c (print_operand_address): Fix for global_load
	assembler functions.
	* configure: Regenerate.
	* configure.ac: Fix for global_load assembler functions.

2021-06-15  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-06-15  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/92568
	* gimplify.c (enum gimplify_defaultmap_kind): Add GDMK_SCALAR_TARGET.
	(struct gimplify_omp_ctx): Extend defaultmap array by one.
	(new_omp_context): Init defaultmap[GDMK_SCALAR_TARGET].
	(omp_notice_variable): Update type classification for Fortran.
	(gimplify_scan_omp_clauses): Update calls for new argument; handle
	GDMK_SCALAR_TARGET; for Fortran, GDMK_POINTER avoid GOVD_MAP_0LEN_ARRAY.
	* langhooks-def.h (lhd_omp_scalar_p): Add 'ptr_ok' argument.
	* langhooks.c (lhd_omp_scalar_p): Likewise.
	(LANG_HOOKS_OMP_ALLOCATABLE_P, LANG_HOOKS_OMP_SCALAR_TARGET_P): New.
	(LANG_HOOKS_DECLS): Add them.
	* langhooks.h (struct lang_hooks_for_decls): Add new hooks, update
	omp_scalar_p pointer type to include the new bool argument.

2021-06-15  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-06-11  Thomas Schwinge  <thomas@codesourcery.com>

	* tree-pretty-print.h (dump_omp_clauses): Add 'bool = true'
	default argument.
	* tree-pretty-print.c (dump_omp_clauses): Update.
	(dump_generic_node) <OMP_CLAUSE>: Use it.

2021-06-08  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-06-08  Jakub Jelinek  <jakub@redhat.com>

	PR c++/100957
	* tree-inline.c (copy_tree_body_r): For OMP_CLAUSE_DEPEND don't
	check TREE_CODE if OMP_CLAUSE_DECL is NULL.

2021-06-04  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-06-04  Tobias Burnus  <tobias@codesourcery.com>

	* tree-nested.c (convert_nonlocal_omp_clauses,
	convert_local_omp_clauses): Handle OMP_CLAUSE_BIND.

2021-06-04  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-06-03  Jakub Jelinek  <jakub@redhat.com>

	PR c++/100859
	* tree-inline.c (copy_tree_body_r): Handle iterators on
	OMP_CLAUSE_AFFINITY or OMP_CLAUSE_DEPEND.

2021-05-31  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-05-29  Jakub Jelinek  <jakub@redhat.com>

	PR middle-end/99928
	* gimplify.c (gimplify_scan_omp_clauses): For taskloop simd
	combined with parallel, make sure to add shared clause to
	parallel for explicit linear clause.

2021-05-28  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-05-28  Jakub Jelinek  <jakub@redhat.com>

	* tree.h (OMP_CLAUSE_MAP_IMPLICIT): Define.

2021-05-28  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-05-28  Tobias Burnus  <tobias@codesourcery.com>

	* gimplify.c (gimplify_omp_affinity): New.
	(gimplify_scan_omp_clauses): Call it; remove affinity clause afterwards.
	* tree-core.h (enum omp_clause_code): Add OMP_CLAUSE_AFFINITY.
	* tree-pretty-print.c (dump_omp_clause): Handle OMP_CLAUSE_AFFINITY.
	* tree.c (omp_clause_num_ops, omp_clause_code_name): Add clause.
	(walk_tree_1): Handle OMP_CLAUSE_AFFINITY.

2021-05-26  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-05-26  Jakub Jelinek  <jakub@redhat.com>

	PR libgomp/100573
	* omp-low.c: Include omp-offload.h.
	(create_omp_child_function): If current_function_decl has
	"omp declare target" attribute and is_gimple_omp_offloaded,
	remove that attribute from the copy of attribute list and
	add "omp target entrypoint" attribute instead.
	(lower_omp_target): Mark .omp_data_sizes.* and .omp_data_kinds.*
	variables for offloading if in omp_maybe_offloaded_ctx.
	* omp-offload.c (pass_omp_target_link::execute): Nullify second
	argument to GOMP_target_data_ext in offloaded code.

2021-05-23  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-05-21  Jakub Jelinek  <jakub@redhat.com>

	PR middle-end/99928
	* tree.h (OMP_CLAUSE_FIRSTPRIVATE_IMPLICIT_TARGET): Define.
	* gimplify.c (enum gimplify_omp_var_data): Fix up
	GOVD_MAP_HAS_ATTACHMENTS value, add GOVD_FIRSTPRIVATE_IMPLICIT.
	(omp_lastprivate_for_combined_outer_constructs): If combined target
	has GOVD_FIRSTPRIVATE_IMPLICIT set for the decl, change it to
	GOVD_MAP | GOVD_SEEN.
	(gimplify_scan_omp_clauses): Set GOVD_FIRSTPRIVATE_IMPLICIT for
	firstprivate clauses with OMP_CLAUSE_FIRSTPRIVATE_IMPLICIT.
	(gimplify_adjust_omp_clauses): For firstprivate clauses with
	OMP_CLAUSE_FIRSTPRIVATE_IMPLICIT either clear that bit and
	OMP_CLAUSE_FIRSTPRIVATE_IMPLICIT_TARGET too, or remove it and
	let it be replaced by implicit map clause.

2021-05-23  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-05-21  Jakub Jelinek  <jakub@redhat.com>

	PR middle-end/99928
	* gimplify.c (omp_lastprivate_for_combined_outer_constructs): New
	function.
	(gimplify_scan_omp_clauses) <case OMP_CLAUSE_LASTPRIVATE>: Use it.
	(gimplify_omp_for): Likewise.

2021-05-20  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-05-20  Jakub Jelinek  <jakub@redhat.com>

	PR middle-end/99928
	* gimplify.c (gimplify_scan_omp_clauses) <case OMP_CLAUSE_LINEAR>: For
	explicit linear clause when combined with target, make it map(tofrom:)
	instead of no clause or firstprivate.

2021-05-19  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-05-19  Jakub Jelinek  <jakub@redhat.com>

	PR middle-end/99928
	* tree.h (OMP_MASTER_COMBINED): Define.
	* gimplify.c (gimplify_scan_omp_clauses): Rewrite lastprivate
	handling for outer combined/composite constructs to a loop.
	Handle lastprivate on combined target.
	(gimplify_expr): Formatting fix.

2021-05-18  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-05-17  Tom de Vries  <tdevries@suse.de>

	PR target/100497
	* config/nvptx/nvptx-protos.h (nvptx_output_atomic_insn): Declare
	* config/nvptx/nvptx.c (nvptx_output_barrier)
	(nvptx_output_atomic_insn): New function.
	(nvptx_print_operand): Add support for 'B'.
	* config/nvptx/nvptx.md: Use nvptx_output_atomic_insn for atomic
	insns.

2021-05-14  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-05-12  Tom de Vries  <tdevries@suse.de>

	PR target/96005
	* config/nvptx/nvptx-opts.h (enum ptx_version): New enum.
	* config/nvptx/nvptx.c (nvptx_file_start): Print .version according
	to ptx_version_option.
	* config/nvptx/nvptx.h (TARGET_PTX_6_3): Define.
	* config/nvptx/nvptx.md (define_insn "nvptx_shuffle<mode>")
	(define_insn "nvptx_vote_ballot"): Use sync variant for
	TARGET_PTX_6_3.
	* config/nvptx/nvptx.opt (ptx_version): Add enum.
	(mptx): Add option.
	* doc/invoke.texi (Nvidia PTX Options): Add mptx item.

2021-05-14  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-05-07  Tobias Burnus  <tobias@codesourcery.com>
		    Tom de Vries  <tdevries@suse.de>

	* omp-low.c (lower_rec_simd_input_clauses): Set max_vf = 1 if
	a truth_value_p reduction variable is nonintegral.

2021-05-14  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-05-04  Tobias Burnus  <tobias@codesourcery.com>

	* omp-low.c (lower_rec_input_clauses, lower_reduction_clauses): Handle
	&& and || with floating-point and complex arguments.

2021-05-14  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-05-03  Tom de Vries  <tdevries@suse.de>

	PR target/100321
	* omp-low.c (lower_rec_input_clauses): Disable SIMT for user-defined
	reduction.

2021-05-14  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-04-29  Tom de Vries  <tdevries@suse.de>

	* omp-expand.c (expand_omp_simd): Add step_orig, and replace uses of
	fd->loop.step by either step or orig_step.
	Backported from master:

2021-05-13  Kwok Cheung Yeung  <kcy@codesourcery.com>

	* omp-offload.c (oacc_xform_loop): Remove vec_tiles.

2021-05-05  Chung-Lin Tang  <cltang@codesourcery.com>

	* tree.h (OMP_CLAUSE_MAP_IMPLICIT_P): New access macro for 'implicit'
	bit, using 'base.deprecated_flag' field of tree_node.
	* tree-pretty-print.c (dump_omp_clause): Add support for printing
	implicit attribute in tree dumping.
	* gimplify.c (gimplify_adjust_omp_clauses_1):
	Set OMP_CLAUSE_MAP_IMPLICIT_P to 1 if map clause is implicitly created.
	(gimplify_adjust_omp_clauses): Adjust place of adding implicitly created
	clauses, from simple append, to starting of list, after non-map clauses.
	* omp-low.c (lower_omp_target): Add GOMP_MAP_IMPLICIT bits into kind
	values passed to libgomp for implicit maps.

2021-04-30  Kwok Cheung Yeung  <kcy@codesourcery.com>

	Backport from mainline
	2021-04-23  Thomas Schwinge  <thomas@codesourcery.com>

	* omp-offload.c (oacc_validate_dims): Implement
	'-Wopenacc-parallelism'.
	* doc/invoke.texi (-Wopenacc-parallelism): Document.

2021-04-07  Kwok Cheung Yeung  <kcy@codesourcery.com>

	* omp-low.c (is_oacc_parallel_or_serial): Handle
	GF_OMP_TARGET_KIND_OACC_PARALLEL_KERNELS_PARALLELIZED and
	GF_OMP_TARGET_KIND_OACC_PARALLEL_KERNELS_GANG_SINGLE.

2021-03-01  Kwok Cheung Yeung  <kcy@codesourcery.com>

	* omp-expand.c (expand_oacc_for): Convert .tile variable to
	diff_type before multiplying.
	* omp-general.c (omp_extract_for_data): Use accumulated precision
	of all collapsed for-loops as precision of iteration variable, up
	to the precision of a long long.

2020-08-24  Tobias Burnus  <tobias@codesourcery.com>

	* omp-sese.c: Fix comment typo.

2020-08-19  Sandra Loosemore  <sandra@codesourcery.com>

	Add a "combined" flag for "acc kernels loop" etc directives.

	* tree.h (OACC_LOOP_COMBINED): New.

2020-07-30  Julian Brown  <julian@codesourcery.com>

	* config/gcn/gcn-tree.c (gcn_goacc_get_worker_red_decl): Do not
	cache/share decls for reduction temporaries between invocations.
	(gcn_goacc_reduction_teardown): Unshare VAR on second use.
	* config/gcn/gcn.c (gcn_init_machine_status): Do not initialise
	reduc_decls.
	* config/gcn/gcn.h (machine_function): Remove reduc_decls cache.

2020-07-30  Julian Brown  <julian@codesourcery.com>

	* config/gcn/gcn-tree.c (gcn_goacc_reduction_teardown): Remove useless
	temporary variable "decl".

2020-07-15  Kwok Cheung Yeung  <kcy@codesourcery.com>
	    Andrew Stubbs   <ams@codesourcery.com>

	* plugin/plugin-gcn.c (parse_target_attributes): Automatically set
	the number of teams and threads if necessary.
	(gcn_exec): Automatically set the number of gangs and workers if
	necessary.

2020-07-15  Julian Brown  <julian@codesourcery.com>

	* config/gcn/gcn.c (gimple.h): Include.
	(gcn_fork_join): Emit barrier for worker-level joins.
	* omp-sese.c (find_local_vars_to_propagate): Add writes_gangprivate
	bitmap parameter. Set bit for blocks containing gang-private variable
	writes.
	(worker_single_simple): Don't emit barrier after predicated block.
	(worker_single_copy): Don't emit barrier if we're not broadcasting
	anything and the block contains no gang-private writes.
	(neuter_worker_single): Don't predicate blocks that only contain NOPs
	or internal marker functions.  Pass has_gangprivate_write argument to
	worker_single_copy.
	(oacc_do_neutering): Add writes_gangprivate bitmap handling.

2020-07-15  Julian Brown  <julian@codesourcery.com>

	* config/gcn/gcn-valu.md (scatter<mode>_insn_1offset_ds<exec_scatter>):
	Add waitcnt.
	(*mov<mode>_insn, *movti_insn): Add waitcnt to ds_write alternatives.

2020-07-15  Julian Brown  <julian@codesourcery.com>

	* config/gcn/gcn-protos.h (gcn_goacc_adjust_private_decl): Update
	prototype.
	* config/gcn/gcn-tree.c (gcn_goacc_get_worker_red_decl): Use
	preallocated block of LDS memory.
	(gcn_goacc_create_propagation_record): Add OFFSET parameter, and return
	temporary LDS space at that offset.  Return pointer in "sender" case.
	(gcn_goacc_adjust_private_decl): Return var.
	* config/gcn/gcn.c (acc_lds_size, gangprivate_hwm, lds_allocs): New
	global vars.
	(ACC_LDS_SIZE): Define as acc_lds_size.
	(gcn_init_machine_status): Don't initialise lds_allocated and
	lds_allocs fields of machine function struct.
	(gcn_option_override): Handle default size for gang-private variables
	and -mgang-local-size option.
	(gcn_expand_prologue): Use LDS_SIZE instead of LDS_SIZE-1 when
	initialising M0_REG.
	(gcn_shared_mem_layout): New function.
	(gcn_print_lds_decl): Update comment. Use global lds_allocs map and
	gangprivate_hwm variable.
	(TARGET_GOACC_SHARED_MEM_LAYOUT): Define target hook.
	* config/gcn/gcn.h (machine_function): Remove lds_allocated,
	lds_allocs. Add reduction_base, reduction_limit.
	* config/gcn/gcn.opt (gang_local_size_opt): New global.
	(mgang-local-size=): New option.
	* config/nvptx/nvptx.c (nvptx_goacc_adjust_private_decl): Return var.
	* doc/tm.texi.in (TARGET_GOACC_SHARED_MEM_LAYOUT): Place documentation
	hook.
	* doc/tm.texi: Regenerate.
	* omp-offload.c (addr_expr_rewrite_info): Change adjusted_vars to a
	hash_map.
	(rewrite_addr_expr): Rewrite VAR_DECLs also.
	(default_goacc_create_propagation_record): Add OFFSET parameter.
	(execute_oacc_gimple_workers): Calculate per-function reduction
	temporary and private-variable size.  Call OpenACC shared_mem_layout
	hook.  Move num_workers==1 handling here.
	(execute_oacc_device_lower): Fix for adjusted_vars being a hash_map
	rather than a hash_set.
	(pass_oacc_gimple_workers::gate): Remove num_workers==1 handling from
	here.  Enable pass for all OpenACC routines in order to call shared
	memory-layout hook.
	* omp-sese.c (targhooks.h, diagnostic-core.h): Add includes.
	(build_sender_ref): Handle sender_decl being pointer.
	(worker_single_copy): Add PLACEMENT and ISOLATE_BROADCASTS parameters.
	Pass placement argument to create_propagation_record hook invocations.
	Handle sender_decl being pointer and isolate_broadcasts inserting extra
	barriers.
	(blk_offset_map_t): Add typedef.
	(neuter_worker_single): Add BLK_OFFSET_MAP parameter.  Pass
	preallocated range to worker_single_copy call.
	(dfs_broadcast_reachable_1): New function.
	(idx_decl_pair_t, used_range_vec_t): New typedefs.
	(sort_size_descending): New function.
	(addr_range): New class.
	(splay_tree_compare_addr_range, splay_tree_free_key, first_fit_range,
	merge_ranges_1, merge_ranges): New functions.
	(oacc_do_neutering): Add BOUNDS_LO, BOUNDS_HI parameters.  Arrange
	layout of shared memory for broadcast operations.
	* omp-sese.h (oacc_do_neutering): Update prototype.
	* target.def (adjust_private_decl): Change return type to tree.
	(create_propagation_record): Add OFFSET parameter.
	(shared_mem_layout): New hook.
	* targhooks.h (default_goacc_create_propagation_record): Update
	prototype.

2020-07-15  Julian Brown  <julian@codesourcery.com>

	* omp-offload.c (pass_oacc_gimple_workers::gate): Disable worker
	partitioning if num_workers is 1.

2020-06-06  Kwok Cheung Yeung  <kcy@codesourcery.com>

	* omp-sese.c (oacc_build_component_ref): Apply address space of
	base object to the entire component reference.

2020-03-27  Sandra Loosemore  <sandra@codesourcery.com>

	* doc/invoke.texi (Option Summary): Add entries for
	-Wopenacc-kernels-annotate-loops and
	-fno-openacc-kernels-annotate-loops.
	(Warning Options): Document -Wopenacc-kernels-annotate-loops.
	(Optimization Options): Document -fno-openacc-kernels-annotate-loops.

2020-03-19  Kwok Cheung Yeung  <kcy@codesourcery.com>

	* omp-offload.c (oacc_loop_auto_partitions): Check for 'omp declare
	target' attributes with a gang clause attached.

2020-03-16  Tobias Burnus  <tobias@codesourcery.com>

	* omp-oacc-kernels-decompose.cc (maybe_build_inner_data_region):
	is_gimple_reg vars are not yet mapped, fall through to map is as
	before the transformation.
	(omp_oacc_kernels_decompose_1): Don't map is_gimple_reg vars.
	(decompose_kernels_region_body): Use tofrom for is_gimple_reg vars.
	(omp_oacc_kernels_decompose_1): Handle is_gimple_reg vars as without
	data kernels.

2020-03-12  Kwok Cheung Yeung  <kcy@codesourcery.com>

	* omp-sese.c (install_var_field): Generate a field name for a VAR_DECL
	using the DECL_UID if it does not have a DECL_NAME.

2019-10-21  Julian Brown  <julian@codesourcery.com>

	* omp-oacc-kernels-decompose.cc (decompose_kernels_region_body): Add
	inhibit_async parameter.  Force asynchronous kernel launches to
	run synchronously if they have problematic variable mappings.
	Don't add explicit wait for decomposed kernels regions we forced
	synchronous.
	(omp_oacc_kernels_decompose_1): Detect problematic variable mappings,
	and inhibit asynchronous execution if we find any.

2020-02-06  Tobias Burnus  <tobias@codesourcery.com>

	* omp-low.c (convert_from_firstprivate_int):
	Use VIEW_CONVERT also for vectors.

2020-02-20  Kwok Cheung Yeung  <kcy@codesourcery.com>

	* omp-general.c (oacc_verify_routine_clauses): Handle
	OMP_CLAUSE_NOHOST.

2020-02-19  Julian Brown  <julian@codesourcery.com>

	* gimplify.c (gimplify_scan_omp_clauses): Handle
	GOMP_MAP_DECLARE_ALLOCATE and GOMP_MAP_DECLARE_DEALLOCATE.

2018-10-04  Cesar Philippidis  <cesar@codesourcery.com>
	    Julian Brown  <julian@codesourcery.com>

	* omp-low.c (scan_sharing_clauses): Update handling of OpenACC declare
	create, declare copyin and declare deviceptr to have local lifetimes.
	(convert_to_firstprivate_int): Handle pointer types.
	(convert_from_firstprivate_int): Likewise.  Create local storage for
	the values being pointed to.  Add new orig_type argument.
	(lower_omp_target): Handle GOMP_MAP_DECLARE_{ALLOCATE,DEALLOCATE}.
	Add orig_type argument to convert_from_firstprivate_int call.
	Allow pointer types with GOMP_MAP_FIRSTPRIVATE_INT.  Don't privatize
	firstprivate VLAs.
	* tree-pretty-print.c (dump_omp_clause): Handle
	GOMP_MAP_DECLARE_{ALLOCATE,DEALLOCATE}.

2019-10-16  Julian Brown  <julian@codesourcery.com>
	    Tobias Burnus  <tobias@codesourcery.com>

	* config/gcn/gcn-protos.h (gcn_goacc_adjust_gangprivate_decl): Rename
	to...
	(gcn_goacc_adjust_private_decl): ...this.
	* config/gcn/gcn-tree.c (diagnostic-core.h): Include.
	(gcn_goacc_adjust_gangprivate_decl): Rename to...
	(gcn_goacc_adjust_private_decl): ...this. Add LEVEL parameter.
	* config/gcn/gcn.c (TARGET_GOACC_ADJUST_GANGPRIVATE_DECL): Rename to...
	(TARGET_GOACC_ADJUST_PRIVATE_DECL): ...this.
	* config/nvptx/nvptx.c (tree-pretty-print.h): Include.
	(nvptx_goacc_adjust_private_decl): New function.
	(TARGET_GOACC_ADJUST_PRIVATE_DECL): Define hook using above function.
	* doc/tm.texi.in (TARGET_GOACC_ADJUST_GANGPRIVATE_DECL): Rename to...
	(TARGET_GOACC_ADJUST_PRIVATE_DECL): ...this.
	* doc/tm.texi: Regenerated.
	* internal-fn.c (expand_UNIQUE): Handle IFN_UNIQUE_OACC_PRIVATE.
	* internal-fn.h (IFN_UNIQUE_CODES): Add OACC_PRIVATE.
	* omp-low.c (omp_context): Remove oacc_partitioning_levels field.
	(lower_oacc_reductions): Add PRIVATE_MARKER parameter.  Insert before
	fork.
	(lower_oacc_head_tail): Add PRIVATE_MARKER parameter. Modify its
	gimple call arguments as appropriate. Don't set
	oacc_partitioning_levels in omp_context. Pass private_marker to
	lower_oacc_reductions.
	(oacc_record_private_var_clauses): Don't check for NULL ctx.
	(mark_oacc_gangprivate): Remove unused function.
	(make_oacc_private_marker): New function.
	(lower_omp_for): Only call oacc_record_vars_in_bind for
	OpenACC contexts.  Create private marker and pass to
	lower_oacc_head_tail.
	(lower_omp_target): Remove unnecessary call to
	oacc_record_private_var_clauses. Remove call to mark_oacc_gangprivate.
	Create private marker and pass to lower_oacc_reductions.
	(process_oacc_gangprivate_1): Remove.
	(lower_omp_1): Only call oacc_record_vars_in_bind for OpenACC.  Don't
	iterate over contexts calling process_oacc_gangprivate_1.
	(omp-offload.c (oacc_loop_xform_head_tail): Treat
	private-variable markers like fork/join when transforming head/tail
	sequences.
	(execute_oacc_device_lower): Use IFN_UNIQUE_OACC_PRIVATE instead of
	"oacc gangprivate" attributes to determine partitioning level of
	variables.  Remove unused variables.
	* omp-sese.c (find_gangprivate_vars): New function.
	(find_local_vars_to_propagate): Use GANGPRIVATE_VARS parameter instead
	of "oacc gangprivate" attribute to determine which variables are
	gang-private.
	(oacc_do_neutering): Use find_gangprivate_vars.
	* target.def (adjust_gangprivate_decl): Rename to...
	(adjust_private_decl): ...this.  Update documentation (briefly).

2019-09-20  Julian Brown  <julian@codesourcery.com>

	* gimplify.c (localize_reductions): Rewrite references for
	OMP_CLAUSE_PRIVATE also.

2019-09-17  Tobias Burnus  <tobias@codesourcery.com>

	* gimplify.c (gomp_oacc_needs_data_present): Remove unused variables.
	* omp-low.c (process_oacc_gangprivate_1): Comment unused
	parameter name to silence unused warning.
	* omp-sese.c (omp_sese_number, omp_sese_pseudo): Remove
	superfluous ().
	(oacc_do_neutering): Use signed int to avoid a warning.

2019-09-06  Julian Brown  <julian@codesourcery.com>

	* gimplify.c (gimplify_omp_for): Use for_stmt in call to
	localize_reductions.

2019-09-06  Julian Brown  <julian@codesourcery.com>

	* config/nvptx/nvptx.c (omp-sese.h): Include.
	(bb_pair_t, bb_pair_vec_t, pseudo_node_t, bracket, bracket_vec_t,
	bb_sese, bb_sese::~bb_sese, bb_sese::append, bb_sese::remove,
	BB_SET_SESE, BB_GET_SESE, nvptx_sese_number, nvptx_sese_pseudo,
	nvptx_sese_color, nvptx_find_sese): Remove.
	(nvptx_neuter_pars): Call omp_find_sese instead of nvptx_find_sese.
	* omp-sese.c (omp-sese.h): Include.
	(struct parallel): Rename to...
	(struct parallel_g): This.
	(parallel::parallel, parallel::~parallel): Rename to...
	(parallel_g::parallel_g, parallel_g::~parallel_g): These.
	(omp_sese_dump_pars, omp_sese_find_par, omp_sese_discover_pars,
	populate_single_mode_bitmaps, find_ssa_names_to_propagate,
	find_partitioned_var_uses, find_local_vars_to_propagate,
	neuter_worker_single): Update for parallel_g name change.
	(bb_pair_t, bb_pair_vec_t): Remove.
	(omp_find_sese): Make global.
	* omp-sese.h (bb_pair_t, bb_pair_vec_t): New.
	(omp_find_sese): Add prototype.

2019-09-06  Julian Brown  <julian@codesourcery.com>

	* gimplify.c (gimplify_omp_workshare): Use OMP_CLAUSES, OMP_BODY
	instead of OMP_TARGET_CLAUSES, OMP_TARGET_BODY.

2019-09-05  Julian Brown  <julian@codesourcery.com>

	* config/gcn/gcn.c (gcn_goacc_validate_dims): Remove
	no-flag_worker-partitioning assertion.
	(TARGET_GOACC_WORKER_PARTITIONING): Define target hook to true.
	* config/gcn/gcn.opt (flag_worker_partitioning): Change default to 1.

2019-09-05  Cesar Philippidis  <cesar@codesourcery.com>
	    Julian Brown  <julian@codesourcery.com>

	* gimplify.c (privatize_reduction): New struct.
	(localize_reductions_r, localize_reductions): New functions.
	(gimplify_omp_for): Call localize_reductions.
	(gimplify_omp_workshare): Likewise.
	* omp-low.c (lower_oacc_reductions): Handle localized reductions.
	Create fewer temp vars.
	* tree-core.h (omp_clause_code): Add OMP_CLAUSE_REDUCTION_PRIVATE_DECL
	documentation.
	* tree.c (omp_clause_num_ops): Bump number of ops for
	OMP_CLAUSE_REDUCTION to 6.
	(walk_tree_1): Adjust accordingly.
	* tree.h (OMP_CLAUSE_REDUCTION_PRIVATE_DECL): Add macro.

2019-09-05  Julian Brown  <julian@codesourcery.com>

	* config/gcn/gcn-protos.h (gcn_goacc_adjust_propagation_record): Rename
	prototype to...
	(gcn_goacc_create_propagation_record): This.
	* config/gcn/gcn-tree.c (gcn_goacc_adjust_propagation_record): Rename
	function to...
	(gcn_goacc_create_propagation_record): This.  Adjust comment.
	* config/gcn/gcn.c (gcn_init_builtins): Override decls for
	BUILT_IN_GOACC_SINGLE_START, BUILT_IN_GOACC_SINGLE_COPY_START,
	BUILT_IN_GOACC_SINGLE_COPY_END and BUILT_IN_GOACC_BARRIER.
	(gcn_fork_join): Remove inaccurate comment.
	(TARGET_GOACC_ADJUST_PROPAGATION_RECORD): Rename to...
	(TARGET_GOACC_CREATE_PROPAGATION_RECORD): This.

2019-09-05  Julian Brown  <julian@codesourcery.com>

	* Makefile.in (OBJS): Add omp-sese.o.
	* omp-builtins.def (BUILT_IN_GOACC_BARRIER, BUILT_IN_GOACC_SINGLE_START,
	BUILT_IN_GOACC_SINGLE_COPY_START, BUILT_IN_GOACC_SINGLE_COPY_END): New
	builtins.
	* omp-offload.c (omp-sese.h): Include header.
	(oacc_loop_xform_head_tail): Call update_stmt for modified builtin
	calls.
	(oacc_loop_process): Likewise.
	(default_goacc_create_propagation_record): New default implementation
	for TARGET_GOACC_CREATE_PROPAGATION_RECORD hook.
	(execute_oacc_loop_designation): New.  Split out of oacc_device_lower.
	(execute_oacc_gimple_workers): New.  Likewise.
	(execute_oacc_device_lower): Recreate dims array.
	(pass_data_oacc_loop_designation, pass_data_oacc_gimple_workers): New.
	(pass_oacc_loop_designation, pass_oacc_gimple_workers): New.
	(make_pass_oacc_loop_designation, make_pass_oacc_gimple_workers): New.
	* omp-offload.h (oacc_fn_attrib_level): Add prototype.
	* omp-sese.c: New file.
	* omp-sese.h: New file.
	* passes.def (pass_oacc_loop_designation, pass_oacc_gimple_workers):
	Add passes.
	* target.def (worker_partitioning, create_propagation_record): Add
	target hooks.
	* targhooks.h (default_goacc_create_propagation_record): Add prototype.
	* tree-pass.h (make_pass_oacc_loop_designation,
	make_pass_oacc_gimple_workers): Add prototypes.
	* doc/tm.texi.in (TARGET_GOACC_WORKER_PARTITIONING,
	TARGET_GOACC_CREATE_PROPAGATION_RECORD): Add documentation hooks.
	* doc/tm.texi: Regenerate.

2019-09-05  Julian Brown  <julian@codesourcery.com>

	* omp-offload.c (convert.h): Include.
	(struct addr_expr_rewrite_info): Add struct.
	(rewrite_addr_expr): New function.
	(is_sync_builtin_call): New function.
	(execute_oacc_device_lower): Support rewriting gang-private variables
	using target hook, and fix up addr_expr nodes afterwards.
	* target.def (adjust_gangprivate_decl): New target hook.
	* doc/tm.texi.in (TARGET_GOACC_ADJUST_GANGPRIVATE_DECL): Document new
	target hook.
	* doc/tm.texi: Regenerate.

2019-08-13  Julian Brown  <julian@codesourcery.com>

	* omp-oacc-kernels-decompose.cc (add_wait): New function, split out
	of...
	(add_async_clauses_and_wait): ...here. Call new outlined function.
	(decompose_kernels_region_body): Add wait at the end of
	explicitly-asynchronous kernels regions.

2019-07-10  Cesar Philippidis  <cesar@codesourcery.com>
	    Julian Brown  <julian@codesourcery.com>

	* gimplify.c (gimplify_adjust_omp_clauses_1): Raise error for
	assumed-size arrays in map clauses for Fortran/OpenMP.
	* omp-low.c (lower_omp_target): Set the size of assumed-size Fortran
	arrays to one to allow use of data already mapped on the offload device.

2019-05-28  Julian Brown  <julian@codesourcery.com>

	* omp-low.c (mark_oacc_gangprivate): Add CTX parameter.  Use to look up
	correct decl to add attribute to.
	(lower_omp_for): Move "oacc gangprivate" processing from here...
	(process_oacc_gangprivate_1): ...to here. New function.
	(lower_omp_target): Update call to mark_oacc_gangprivate.
	(execute_lower_omp): Call process_oacc_gangprivate_1 for each OMP
	context.

2019-05-20  Julian Brown  <julian@codesourcery.com>

	* gimplify.c (gimplify_adjust_omp_clauses_1): Support implied no_alloc
	and optional arguments based on mappings in enclosing data regions.

2019-05-19  Julian Brown  <julian@codesourcery.com>

	* gimplify.c (oacc_array_mapping_info): Add REF field.
	(gimplify_scan_omp_clauses): Initialise above field for data blocks
	passed by reference.
	(gomp_oacc_needs_data_present): Handle references.
	(gimplify_adjust_omp_clauses_1): Handle references and optional
	arguments for variables declared in lexically-enclosing OpenACC data
	region.

2019-05-16  Julian Brown  <julian@codesourcery.com>

	* omp-oacc-kernels-decompose.cc (find_omp_for_index_vars_1,
	find_omp_for_index_vars): New functions.
	(maybe_build_inner_data_region): Add IDX_VARS argument. Don't add
	CREATE mapping clauses for loop index variables.  Set TREE_ADDRESSABLE
	flag on newly-mapped declarations as a side effect.
	(decompose_kernels_region_body): Call find_omp_for_index_vars.  Don't
	create PRESENT clause for loop index variables.  Pass index variable
	set to maybe_build_inner_data_region.

2019-01-23  Thomas Schwinge  <thomas@codesourcery.com>

	* params.opt (openacc_kernels): Default to decompose.

2018-12-11  Julian Brown  <julian@codesourcery.com>
	    Chung-Lin Tang  <cltang@codesourcery.com>

	* config/nvptx/nvptx.c (tree-hash-traits.h): Include.
	(gangprivate_shared_size): New global variable.
	(gangprivate_shared_align): Likewise.
	(gangprivate_shared_sym): Likewise.
	(gangprivate_shared_hmap): Likewise.
	(nvptx_option_override): Initialize gangprivate_shared_sym,
	gangprivate_shared_align.
	(nvptx_file_end): Output gangprivate_shared_sym.
	(nvptx_goacc_expand_accel_var): New function.
	(nvptx_set_current_function): New function.
	(TARGET_SET_CURRENT_FUNCTION): Define hook.
	(TARGET_GOACC_EXPAND_ACCEL): Likewise.
	* doc/tm.texi (TARGET_GOACC_EXPAND_ACCEL_VAR): Document new hook.
	* doc/tm.texi.in (TARGET_GOACC_EXPAND_ACCEL_VAR): Likewise.
	* expr.c (expand_expr_real_1): Remap decls marked with the
	"oacc gangprivate" attribute.
	* omp-low.c (omp_context): Add oacc_partitioning_level and
	oacc_addressable_var_decls fields.
	(new_omp_context): Initialize oacc_addressable_var_decls in new
	omp_context.
	(delete_omp_context): Delete oacc_addressable_var_decls in old
	omp_context.
	(lower_oacc_head_tail): Record partitioning-level count in omp context.
	(oacc_record_private_var_clauses, oacc_record_vars_in_bind)
	(mark_oacc_gangprivate): New functions.
	(lower_omp_for): Call oacc_record_private_var_clauses with "for"
	clauses.  Call mark_oacc_gangprivate for gang-partitioned loops.
	(lower_omp_target): Call oacc_record_private_var_clauses with "target"
	clauses.
	Call mark_oacc_gangprivate for offloaded target regions.
	(lower_omp_1): Call vars_in_bind for GIMPLE_BIND within OMP regions.
	* target.def (expand_accel_var): New hook.

2018-09-05  Cesar Philippidis  <cesar@codesourcery.com>
	    Chung-Lin Tang  <cltang@codesourcery.com>

	* gimplify.c (omp_add_variable): Enable firstprivate reduction
	variables.

2018-09-20  Cesar Philippidis  <cesar@codesourcery.com>

	* omp-low.c (lower_oacc_head_mark): Don't mark OpenACC auto
	loops as independent inside acc parallel regions.

2018-12-22  Cesar Philippidis  <cesar@codesourcery.com>
            Julian Brown  <julian@codesourcery.com>
            Tobias Burnus  <tobias@codesourcery.com>

	* omp-low.c (maybe_lookup_field_in_outer_ctx): New function.
	(convert_to_firstprivate_int): New function.
	(convert_from_firstprivate_int): New function.
	(lower_omp_target): Enable GOMP_MAP_FIRSTPRIVATE_INT in OpenACC.
	Remove unused variable.

2018-08-28  Julian Brown  <julian@codesourcery.com>
            Cesar Philippidis  <cesar@codesourcery.com>

	* gimplify.c (oacc_array_mapping_info): New struct.
	(gimplify_omp_ctx): Add decl_data_clause hash map.
	(new_omp_context): Zero-initialise above.
	(delete_omp_context): Delete above if allocated.
	(gimplify_scan_omp_clauses): Scan for array mappings on data constructs,
	and record in above map.
	(gomp_oacc_needs_data_present): New function.
	(gimplify_adjust_omp_clauses_1): Handle data mappings (e.g. array
	slices) declared in lexically-enclosing data constructs.
	* omp-low.c (lower_omp_target): Allow decl for bias not to be present
	in OpenACC context.

2018-10-05  Nathan Sidwell  <nathan@acm.org>
	    Tom de Vries  <tdevries@suse.de>
	    Thomas Schwinge  <thomas@codesourcery.com>
	    Julian Brown  <julian@codesourcery.com>

	* doc/invoke.texi (fopenacc-dim): Update.
	* omp-offload.c (oacc_parse_default_dims): Update.
	(oacc_validate_dims): Emit warnings about strange partitioning choices.

2019-09-20  Chung-Lin Tang <cltang@codesourcery.com>
	    Cesar Philippidis  <cesar@codesourcery.com>

	* omp-expand.c (struct omp_region): Add inside_kernels_p field.
	(expand_omp_for_generic): Adjust to generate a 'sequential' loop
	when GOMP builtin arguments are BUILT_IN_NONE.
	(expand_omp_for): Use expand_omp_for_generic to generate a
	non-parallelized loop for OMP_FORs inside OpenACC kernels regions.
	(expand_omp): Mark inside_kernels_p field true for regions
	nested inside OpenACC kernels constructs.

2018-09-20  Cesar Philippidis  <cesar@codesourcery.com>
	    Julian Brown  <julian@codesourcery.com>

	* omp-low.c (install_var_field): New base_pointer_restrict
	argument.
	(scan_sharing_clauses): Update call to install_var_field.
	(omp_target_base_pointers_restrict_p): New function.
	(scan_omp_target): Update call to install_var_field.

2018-10-30  Cesar Philippidis  <cesar@codesourcery.com>

	* config/nvptx/nvptx.c (nvptx_propagate_unified): New.
	(nvptx_split_blocks): Call it for cond_uni insn.
	(nvptx_expand_cond_uni): New.
	(enum nvptx_builtins): Add NVPTX_BUILTIN_COND_UNI.
	(nvptx_init_builtins): Initialize it.
	(nvptx_expand_builtin):
	(nvptx_generate_vector_shuffle): Change integral SHIFT operand to
	tree BITS operand.
	(nvptx_vector_reduction): New.
	(nvptx_adjust_reduction_type): New.
	(nvptx_goacc_reduction_setup): Use it to adjust the type of ref_to_res.
	(nvptx_goacc_reduction_init): Don't update LHS if it doesn't exist.
	(nvptx_goacc_reduction_fini): Call nvptx_vector_reduction for vector.
	Use it to adjust the type of ref_to_res.
	(nvptx_goacc_reduction_teardown):
	* config/nvptx/nvptx.md (cond_uni): New pattern.

2018-06-29  Cesar Philippidis  <cesar@codesourcery.com>
	    James Norris  <jnorris@codesourcery.com>

	* gimplify.c (enum gimplify_omp_var_data): Add GOVD_DEVICETPR.
	(omp_notice_variable): Add GOVD_DEVICEPTR attribute when appropriate.
	(gimplify_scan_omp_clauses): Add GOVD_DEVICEPTR attribute when
	appropriate.
	(gimplify_adjust_omp_clauses_1): Set GOMP_MAP_FORCE_DEVICEPTR for
	implicit deviceptr mappings.

2018-10-02  Thomas Schwinge  <thomas@codesourcery.com>
	    Cesar Philippidis  <cesar@codesourcery.com>

	* tree-core.h (omp_clause_code): Add OMP_CLAUSE_NOHOST.
	* tree.c (omp_clause_num_ops, omp_clause_code_name, walk_tree_1):
	Update for these.
	* tree-pretty-print.c (dump_omp_clause): Handle	OMP_CLAUSE_NOHOST.
	* gimplify.c (gimplify_scan_omp_clauses)
	(gimplify_adjust_omp_clauses): Handle OMP_CLAUSE_NOHOST.
	* tree-nested.c (convert_nonlocal_omp_clauses)
	(convert_local_omp_clauses): Likewise.
	* omp-low.c (scan_sharing_clauses): Likewise.
	* omp-offload.c (maybe_discard_oacc_function): New function.
	(execute_oacc_device_lower) [!ACCEL_COMPILER]: Handle OpenACC
	nohost clauses.

2020-04-19  Chung-Lin Tang  <cltang@codesourcery.com>

	PR other/76739

	* builtin-types.def (BT_FN_VOID_INT_SIZE_PTR_PTR_PTR_VAR): New type.
	* omp-builtins.def (BUILT_IN_GOACC_DATA_START): Adjust function type
	to new BT_FN_VOID_INT_SIZE_PTR_PTR_PTR_VAR.
	* gimplify.c (gimplify_scan_omp_clauses): Skip gimplification of
	OMP_CLAUSE_SIZE of non-contiguous array maps (which is a TREE_LIST).
	* omp-expand.c (expand_omp_target): Add non-contiguous array descriptor
	pointers to variadic arguments.
	* omp-low.c (append_field_to_record_type): New function.
	(create_noncontig_array_descr_type): Likewise.
	(create_noncontig_array_descr_init_code): Likewise.
	(scan_sharing_clauses): For non-contiguous array map kinds, check for
	supported dimension structure, and install non-contiguous array
	variable into current omp_context.
	(reorder_noncontig_array_clauses): New function.
	(scan_omp_target): Call reorder_noncontig_array_clauses to place
	non-contiguous array map clauses at beginning of clause sequence.
	(lower_omp_target): Add handling for non-contiguous array map kinds,
	add all created non-contiguous array descriptors to
	gimple_omp_target_data_arg.