gcc/
	* omp-low.c (lower_omp_target): Fix up argument to is_reference.
	(expand_omp_ordered_sink): Handle TREE_PURPOSE of deps being
	TRUNC_DIV_EXPR.
	* gimplify.c (gimplify_scan_omp_clauses): Likewise.  Set
	ctx->target_map_scalars_firstprivate on OMP_TARGET even for Fortran.
	Remove omp_no_lastprivate callers.  Propagate lastprivate on combined
	teams distribute parallel for simd even to distribute and teams
	construct.  For OMP_CLAUSE_DEPEND add missing break at the end of
	OMP_CLAUSE_DEPEND_SINK case.
	(omp_notice_variable): Use lang_hooks.decls.omp_scalar_p.
	(omp_no_lastprivate): Removed.
	(gimplify_adjust_omp_clauses): Remove omp_no_lastprivate callers.
	(gimplify_omp_for): Likewise.
	(computable_teams_clause): Fail for automatic vars from current
	function not yet seen in bind expr.
	* langhooks.c (lhd_omp_scalar_p): New function.
	* langhooks.h (struct lang_hooks_for_decls): Add omp_scalar_p.
	* varpool.c (varpool_node::get_create): Set node->offloading
	even for DECL_EXTERNAL decls.
	* langhooks-def.h (lhd_omp_scalar_p): New prototype.
	(LANG_HOOKS_OMP_SCALAR_P): Define.
	(LANG_HOOKS_DECLS): Use it.
gcc/fortran/
	* openmp.c (gfc_free_omp_clauses): Free critical_name, grainsize,
	hint, num_tasks, priority and if_exprs.
	(gfc_match_omp_to_link, gfc_match_omp_depend_sink): New functions.
	(enum omp_mask1, enum omp_mask2): New enums.
	Change all OMP_CLAUSE_* defines into enum values, and change their
	values from ((uint64_t) 1 << bit) to just bit.
	(omp_mask, omp_inv_mask): New classes.  Add ctors and operators.
	(gfc_match_omp_clauses): Change mask argument from uint64_t to
	const omp_mask.  Assert OMP_MASK1_LAST and OMP_MASK2_LAST are
	at most 64.  Move delete clause handling to where it
	alphabetically belongs.  Parse defaultmap, grainsize, hint,
	is_device_ptr, nogroup, nowait, num_tasks, priority, simd, threads
	and use_device_ptr clauses.  Parse if clause modifier.  Parse map
	clause always modifier, and release and delete kinds.  Parse ordered
	clause with argument.  Parse schedule clause modifiers.  Differentiate
	device clause parsing based on openacc flag.  Guard link clause
	parsing with openacc flag.  Add support for parsing
	linear clause modifiers.  Parse depend(source) and depend(sink: ...).
	Use gfc_match_omp_to_link for to and link clauses in declare target
	construct.
	(match_acc): Change mask type from uint64_t to const omp_mask.
	(OMP_SINGLE_CLAUSES, OMP_ORDERED_CLAUSES,
	OMP_DECLARE_TARGET_CLAUSES, OMP_TASKLOOP_CLAUSES,
	OMP_TARGET_ENTER_DATA_CLAUSES, OMP_TARGET_EXIT_DATA_CLAUSES): Define.
	(OACC_PARALLEL_CLAUSES, OACC_KERNELS_CLAUSES, OACC_DATA_CLAUSES,
	OACC_LOOP_CLAUSES, OACC_HOST_DATA_CLAUSES, OACC_DECLARE_CLAUSES,
	OACC_ENTER_DATA_CLAUSES, OACC_EXIT_DATA_CLAUSES, OACC_WAIT_CLAUSES,
	OACC_ROUTINE_CLAUSES, OMP_PARALLEL_CLAUSES, OMP_DECLARE_SIMD_CLAUSES,
	OMP_SECTIONS_CLAUSES, OMP_TEAMS_CLAUSES, OMP_DISTRIBUTE_CLAUSES):
	Replace first or only OMP_CLAUSE_* value in bitset with
	omp_mask (OMP_CLAUSE_*).
	(OMP_DO_CLAUSES): Likewise.  Add OMP_CLAUSE_LINEAR.
	(OMP_SIMD_CLAUSES): Replace first or only OMP_CLAUSE_* value in
	bitset with omp_mask (OMP_CLAUSE_*).  Add OMP_CLAUSE_SIMDLEN.
	(OACC_UPDATE_CLAUSES): Replace first or only OMP_CLAUSE_* value in
	bitset with omp_mask (OMP_CLAUSE_*).  Replace OMP_CLAUSE_OACC_DEVICE
	with OMP_CLAUSE_DEVICE.
	(OMP_TASK_CLAUSES): Replace first or only OMP_CLAUSE_* value in
	bitset with omp_mask (OMP_CLAUSE_*).  Add OMP_CLAUSE_PRIORITY.
	(OMP_TARGET_CLAUSES): Replace first or only OMP_CLAUSE_* value in
	bitset with omp_mask (OMP_CLAUSE_*).  Add OMP_CLAUSE_DEPEND,
	OMP_CLAUSE_NOWAIT, OMP_CLAUSE_PRIVATE, OMP_CLAUSE_FIRSTPRIVATE,
	OMP_CLAUSE_DEFAULTMAP and OMP_CLAUSE_IS_DEVICE_PTR.
	(OMP_TARGET_DATA_CLAUSES): Replace first or only OMP_CLAUSE_* value in
	bitset with omp_mask (OMP_CLAUSE_*).  Add OMP_CLAUSE_USE_DEVICE_PTR.
	(OMP_TARGET_UPDATE_CLAUSES): Replace first or only OMP_CLAUSE_* value
	in bitset with omp_mask (OMP_CLAUSE_*).  Add OMP_CLAUSE_DEPEND and
	OMP_CLAUSE_NOWAIT.
	(match_omp): Change mask argument from unsigned int to
	const omp_mask.
	(gfc_match_omp_critical): Parse optional clauses and use omp_clauses
	union member instead of omp_name.
	(gfc_match_omp_end_critical): New function.
	(gfc_match_omp_distribute_parallel_do): Remove ordered and linear
	clauses from the mask.
	(gfc_match_omp_distribute_parallel_do_simd): Use
	& ~(omp_mask (OMP_CLAUSE_*)) instead of & ~OMP_CLAUSE_*.
	(gfc_match_omp_target_teams_distribute_parallel_do_simd): Likewise.
	(gfc_match_omp_teams_distribute_parallel_do_simd): Likewise.
	(gfc_match_omp_do_simd): Likewise.  Don't remove ordered clause from
	the mask.
	(gfc_match_omp_parallel_do_simd): Likewise.
	(gfc_match_omp_target_teams_distribute_parallel_do): Likewise.
	(gfc_match_omp_teams_distribute_parallel_do): Likewise.
	(gfc_match_omp_declare_simd): If not using the form with
	(proc-name), require space before first clause.  Make (proc-name)
	optional.  If not present, set proc_name to NULL.
	(gfc_match_omp_declare_target): Rewritten for OpenMP 4.5.
	(gfc_match_omp_single): Use OMP_SINGLE_CLAUSES.
	(gfc_match_omp_task, gfc_match_omp_taskwait, gfc_match_omp_taskyield):
	Move around to where they belong alphabetically.
	(gfc_match_omp_target_enter_data, gfc_match_omp_target_exit_data,
	gfc_match_omp_target_parallel, gfc_match_omp_target_parallel_do,
	gfc_match_omp_target_parallel_do_simd, gfc_match_omp_target_simd,
	gfc_match_omp_taskloop, gfc_match_omp_taskloop_simd):
	New functions.
	(gfc_match_omp_ordered): Parse clauses.
	(gfc_match_omp_ordered_depend): New function.
	(gfc_match_omp_cancel, gfc_match_omp_end_single): Use
	omp_mask (OMP_CLAUSE_*) instead of OMP_CLAUSE_*.
	(resolve_oacc_scalar_int_expr): Renamed to ...
	(resolve_scalar_int_expr): ... this.  Fix up formatting.
	(resolve_oacc_positive_int_expr): Renamed to ...
	(resolve_positive_int_expr): ... this.  Fix up formatting.
	(resolve_nonnegative_int_expr): New function.
	(resolve_omp_clauses): Adjust callers, use the above functions
	even for OpenMP clauses, add handling of new OpenMP 4.5 clauses.
	Require orderedc >= collapse if specified. Handle depend(sink:)
	and depend(source) restrictions.  Disallow linear clause when
	orderedc is non-zero.  Diagnose linear clause modifiers when not in
	declare simd.  Only check for integer type if ref modifier
	is not used.  Remove diagnostics for required VALUE attribute.
	Diagnose VALUE attribute with ref or uval modifiers.  Allow
	non-constant linear-step, if it is a dummy argument alone and is
	mentioned in uniform clause.  Diagnose map kinds not allowed
	for various constructs.  Diagnose target {enter ,exit ,}data without
	any map clauses.  Add dummy OMP_LIST_IS_DEVICE_PTR and
	OMP_LIST_USE_DEVICE_PTR cases.
	(gfc_resolve_omp_do_blocks): Set omp_current_do_collapse to orderedc
	if non-zero.
	(gfc_resolve_omp_parallel_blocks): Handle new OpenMP 4.5 constructs,
	replace underscores with spaces in a few construct names.
	(resolve_omp_do): Set collapse to orderedc if non-zero.  Handle new
	OpenMP 4.5 constructs.
	(resolve_oacc_loop_blocks): Call resolve_positive_int_expr instead
	of resolve_oacc_positive_int_expr.
	(gfc_resolve_omp_directive): Handle new OpenMP 4.5 constructs.
	(gfc_resolve_omp_declare_simd): Allow ods->proc_name to be NULL.
	* trans-openmp.c (gfc_omp_scalar_p): New function.
	(doacross_steps): New variable.
	(gfc_trans_omp_clauses): Handle new OpenMP 4.5 clauses and new clause
	modifiers.
	(gfc_trans_omp_critical): Adjust EXEC_OMP_CRITICAL handling.
	(gfc_trans_omp_do): Handle doacross loops.  Clear sched_simd flag.
	Handle EXEC_OMP_TASKLOOP.
	(gfc_trans_omp_ordered): Translate omp clauses, allow NULL
	code->block.
	(GFC_OMP_SPLIT_TASKLOOP, GFC_OMP_MASK_TASKLOOP): New enum constants.
	(gfc_split_omp_clauses): Copy orderedc together with ordered.  Change
	firstprivate and lastprivate handling for OpenMP 4.5.
	Handle EXEC_OMP_TARGET_SIMD, EXEC_OMP_TARGET_PARALLEL{,_DO,_DO_SIMD}
	and EXEC_OMP_TASKLOOP{,_SIMD}.  Add handling for new OpenMP 4.5
	clauses and clause modifiers and handle if clause without/with
	modifiers.
	(gfc_trans_omp_teams): Add omp_clauses argument, add it to other
	teams clauses.  Don't wrap into OMP_TEAMS if -fopenmp-simd.
	(gfc_trans_omp_target): For -fopenmp, translate num_teams and
	thread_limit clauses on combined target teams early and pass to
	gfc_trans_omp_teams.  Set OMP_TARGET_COMBINED if needed.
	Handle EXEC_OMP_TARGET_PARALLEL{,_DO,_DO_SIMD} and
	EXEC_OMP_TARGET_SIMD.
	(gfc_trans_omp_taskloop, gfc_trans_omp_target_enter_data,
	gfc_trans_omp_target_exit_data): New functions.
	(gfc_trans_omp_directive): Handle EXEC_OMP_TARGET_{ENTER,EXIT}_DATA
	EXEC_OMP_TASKLOOP{,_SIMD}, EXEC_OMP_TARGET_PARALLEL{,_DO,_DO_SIMD}
	and EXEC_OMP_TARGET_SIMD.  Adjust gfc_trans_omp_teams caller.
	* symbol.c (check_conflict): Handle omp_declare_target_link.
	(gfc_add_omp_declare_target_link): New function.
	(gfc_copy_attr): Copy omp_declare_target_link.
	* dump-parse-tree.c (show_omp_namelist): Handle OMP_DEPEND_SINK_FIRST
	depend_op.  Print linear clause modifiers.
	(show_omp_clauses): Adjust for OpenMP 4.5 clause changes.
	(show_omp_node): Print clauses for EXEC_OMP_ORDERED.  Allow NULL
	c->block for EXEC_OMP_ORDERED.  Formatting fixes.  Adjust handling of
	EXEC_OMP_CRITICAL, handle new OpenMP 4.5 constructs and some
	forgotten OpenMP 4.0 constructs.
	(show_code_node): Handle new OpenMP 4.5 constructs and some forgotten
	OpenMP 4.0 constructs.
	* gfortran.h (symbol_attribute): Add omp_declare_target_link bitfield.
	(struct gfc_omp_namelist): Add u.common and u.linear_op fields.
	(struct gfc_common_head): Change omp_declare_target into bitfield.
	Add omp_declare_target_link bitfield.
	(gfc_add_omp_declare_target_link): New prototype.
	(enum gfc_statement): Add ST_OMP_TARGET_PARALLEL,
	ST_OMP_END_TARGET_PARALLEL, ST_OMP_TARGET_PARALLEL_DO,
	ST_OMP_END_TARGET_PARALLEL_DO, ST_OMP_TARGET_PARALLEL_DO_SIMD,
	ST_OMP_END_TARGET_PARALLEL_DO_SIMD, ST_OMP_TARGET_ENTER_DATA,
	ST_OMP_TARGET_EXIT_DATA, ST_OMP_TARGET_SIMD, ST_OMP_END_TARGET_SIMD,
	ST_OMP_TASKLOOP, ST_OMP_END_TASKLOOP, ST_OMP_TASKLOOP_SIMD,
	ST_OMP_END_TASKLOOP_SIMD and ST_OMP_ORDERED_DEPEND.
	(enum gfc_omp_depend_op): Add OMP_DEPEND_SINK_FIRST and
	OMP_DEPEND_SINK.
	(enum gfc_omp_linear_op): New.
	(struct gfc_omp_clauses): Add critical_name, depend_source,
	orderedc, defaultmap, nogroup, sched_simd, sched_monotonic,
	sched_nonmonotonic, simd, threads, grainsize, hint, num_tasks,
	priority and if_exprs fields.
	(enum gfc_exec_op): Add EXEC_OMP_END_CRITICAL,
	EXEC_OMP_TARGET_ENTER_DATA, EXEC_OMP_TARGET_EXIT_DATA,
	EXEC_OMP_TARGET_PARALLEL, EXEC_OMP_TARGET_PARALLEL_DO,
	EXEC_OMP_TARGET_PARALLEL_DO_SIMD, EXEC_OMP_TARGET_SIMD,
	EXEC_OMP_TASKLOOP, EXEC_OMP_TASKLOOP_SIMD.
	(enum gfc_omp_map_op): Add OMP_MAP_RELEASE,
	OMP_MAP_ALWAYS_TO, OMP_MAP_ALWAYS_FROM and OMP_MAP_ALWAYS_TOFROM.
	(OMP_LIST_IS_DEVICE_PTR, OMP_LIST_USE_DEVICE_PTR): New.
	(enum gfc_omp_if_kind): New.
	* module.c (enum ab_attribute): Add AB_OMP_DECLARE_TARGET_LINK.
	(attr_bits): Add AB_OMP_DECLARE_TARGET_LINK entry.
	(mio_symbol_attribute): Save and restore omp_declare_target_link bit.
	* trans.h (gfc_omp_scalar_p): New prototype.
	* frontend-passes.c (gfc_code_walker): Handle new OpenMP 4.5
	expressions.
	* trans.c (trans_code): Handle new OpenMP 4.5 constructs.
	* resolve.c (gfc_resolve_blocks): Likewise.
	(gfc_resolve_code): Likewise.
	* f95-lang.c (LANG_HOOKS_OMP_SCALAR_P): Redefine to gfc_omp_scalar_p.
	(gfc_attribute_table): Add "omp declare target link".
	* st.c (gfc_free_statement): Handle EXEC_OMP_END_CRITICAL like
	EXEC_OMP_CRITICAL before, free clauses for EXEC_OMP_CRITICAL
	and new OpenMP 4.5 constructs.  Free omp clauses even for
	EXEC_OMP_ORDERED.
	* match.c (match_exit_cycle): Rename collapse variable to count,
	set it to orderedc if non-zero, instead of collapse.
	* trans-decl.c (add_attributes_to_decl): Add "omp declare target link"
	instead of "omp declare target" for omp_declare_target_link.
	* trans-common.c (build_common_decl): Likewise.
	* match.h (gfc_match_omp_target_enter_data,
	gfc_match_omp_target_exit_data, gfc_match_omp_target_parallel,
	gfc_match_omp_target_parallel_do,
	gfc_match_omp_target_parallel_do_simd, gfc_match_omp_target_simd,
	gfc_match_omp_taskloop, gfc_match_omp_taskloop_simd,
	gfc_match_omp_end_critical, gfc_match_omp_ordered_depend): New
	prototypes.
	* parse.c (decode_omp_directive): Use gfc_match_omp_end_critical
	instead of gfc_match_omp_critical for !$omp end critical.
	Handle new OpenMP 4.5 constructs.  If ordered directive has
	depend clause as the first of the clauses, use
	gfc_match_omp_ordered_depend and ST_OMP_ORDERED_DEPEND instead of
	gfc_match_omp_ordered and ST_OMP_ORDERED.
	(case_executable): Add ST_OMP_TARGET_ENTER_DATA,
	ST_OMP_TARGET_EXIT_DATA and ST_OMP_ORDERED_DEPEND cases.
	(case_exec_markers): Add ST_OMP_TARGET_PARALLEL,
	ST_OMP_TARGET_PARALLEL_DO, ST_OMP_TARGET_PARALLEL_DO_SIMD,
	ST_OMP_TARGET_SIMD, ST_OMP_TASKLOOP and ST_OMP_TASKLOOP_SIMD cases.
	(gfc_ascii_statement): Handle new OpenMP 4.5 constructs.
	(parse_omp_do): Handle ST_OMP_TARGET_PARALLEL_DO,
	ST_OMP_TARGET_PARALLEL_DO_SIMD, ST_OMP_TASKLOOP and
	ST_OMP_TASKLOOP_SIMD.
	(parse_omp_structured_block): Handle EXEC_OMP_END_CRITICAL instead
	of EXEC_OMP_CRITICAL, adjust for EXEC_OMP_CRITICAL having omp clauses
	now.
	(parse_executable): Handle ST_OMP_TARGET_PARALLEL,
	ST_OMP_TARGET_PARALLEL_DO, ST_OMP_TARGET_PARALLEL_DO_SIMD,
	ST_OMP_TASKLOOP and ST_OMP_TASKLOOP_SIMD.
gcc/testsuite/
	* gfortran.dg/gomp/pr77516.f90: Add dg-warning.
	* gfortran.dg/gomp/target1.f90: Remove ordered clause where it is
	no longer allowed and corresponding ordered construct.
	* gfortran.dg/gomp/linear-1.f90: New test.
	* gfortran.dg/gomp/declare-simd-2.f90: New test.
	* gfortran.dg/gomp/declare-target-1.f90: New test.
	* gfortran.dg/gomp/declare-target-2.f90: New test.
libgomp/
	* testsuite/libgomp.fortran/examples-4/declare_target-1.f90
	(fib_wrapper): Add map(from: x) clause.
	* testsuite/libgomp.fortran/examples-4/declare_target-2.f90
	(e_53_2): Likewise.
	* testsuite/libgomp.fortran/examples-4/declare_target-4.f90
	(accum): Add map(tmp) clause.
	* testsuite/libgomp.fortran/examples-4/declare_target-5.f90
	(accum): Add map(tofrom: tmp) clause.
	* testsuite/libgomp.fortran/examples-4/target_data-3.f90
	(gramSchmidt): Likewise.
	* testsuite/libgomp.fortran/examples-4/teams-2.f90 (dotprod): Add
	map(tofrom: sum) clause.
	* testsuite/libgomp.fortran/nestedfn5.f90 (foo): Add twice
	map (alloc: a, l) clause.  Add defaultmap(tofrom: scalar) clause.
	* testsuite/libgomp.fortran/pr66199-2.f90: Adjust for linear clause
	only allowed on the loop iterator.
	* testsuite/libgomp.fortran/target4.f90 (foo): Add map(t) clause.
	* testsuite/libgomp.fortran/taskloop2.f90: New test.
	* testsuite/libgomp.fortran/taskloop4.f90: New test.
	* testsuite/libgomp.fortran/doacross1.f90: New test.
	* testsuite/libgomp.fortran/doacross3.f90: New test.
	* testsuite/libgomp.fortran/taskloop1.f90: New test.
	* testsuite/libgomp.fortran/taskloop3.f90: New test.
	* testsuite/libgomp.fortran/doacross2.f90: New test.
	* testsuite/libgomp.c/doacross-1.c (main): Add missing
	#pragma omp atomic read.
	* testsuite/libgomp.c/doacross-2.c (main): Likewise.
	* testsuite/libgomp.c/doacross-3.c (main): Likewise.

From-SVN: r242037