2019-10-09  Tobias Burnus  <tobias@codesourcery.com>

	* hooks.c (hook_tree_tree_null): New.
	* hooks.h (hook_tree_tree_null): Declare.
	* langhooks-def.h (LANG_HOOKS_OMP_ARRAY_DATA): Define.
	(LANG_HOOKS_FOR_TYPES_INITIALIZER): Use it.
	* langhooks.h (lang_hooks_for_types): Add omp_array_data.
	* omp-general.c (omp_is_optional_argument): Handle value+optional.
	* omp-low.c (omp_context): Add array_data_map + present_map.
	(install_var_field): Handle array descriptors.
	(delete_omp_context): Free new maps.
	(scan_sharing_clauses): Handle array descriptors.
	(lower_omp_target): Ditto. Fix optional-arg present check.

2019-10-08  Tobias Burnus  <tobias@codesourcery.com>

	Backported from mainline
	2019-10-08  Tobias Burnus  <tobias@codesourcery.com>

	* parse.c (parse_executable): Add missing ST_OMP_TARGET_SIMD.

2019-10-08  Tobias Burnus  <tobias@codesourcery.com>

	Backported from mainline
	2019-10-08  Tobias Burnus  <tobias@codesourcery.com>

	* match.h (gfc_match_omp_eos_error): Renamed from gfc_match_omp_eos.
	* openmp.c (gfc_match_omp_eos): Make static.
	(gfc_match_omp_eos_error): New.
	* parse.c (matchs, matchdo, matchds): Do as done for 'matcho' -
	if error occurred after OpenMP/OpenACC directive matched, do not
	try other directives.
	(decode_oacc_directive, decode_omp_directive): Call new function
	instead.

2019-10-02  Tobias Burnus  <tobias@codesourcery.com>

	Backported from mainline
	2019-10-02  Tobias Burnus  <tobias@codesourcery.com>

	* openmp.c (gfc_match_omp_clauses): Show a clause-parsing
	error if none was rised before.
	* parse.c (matcha, matcho): If error occurred after
	OpenMP/OpenACC directive matched, do not try other directives.

2019-09-20  Tobias Burnus  <tobias@codesourcery.com>

	Backported from mainline
	2019-09-20  Tobias Burnus  <tobias@codesourcery.com>

	* openmp.c (gfc_resolve_oacc_declare): Reject all
	non variables but accept function result variables.
	* trans-openmp.c (gfc_trans_omp_clauses): Handle
	function-result variables for remaing cases.

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

	* trans-expr.c (gfc_auto_dereference_var): Use passed loc argument.

2019-09-06  Andrew Stubbs  <ams@codesourcery.com>

	Backport from mainline:

	2019-07-05  Andrew Stubbs  <ams@codesourcery.com>

	* openmp.c (resolve_omp_clauses): Add custom error messages for
	parameters in map clauses.

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

	* trans-openmp.c (gfc_omp_finish_clause): Change clauses mapping
	assumed-size arrays to use the GOMP_MAP_FORCE_PRESENT map type.

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

	* openmp.c (resolve_oacc_data_clauses): Allow polymorphic allocatable
	variables.
	* trans-expr.c (gfc_conv_component_ref,
	conv_parent_component_reference): Make global.
	(gfc_auto_dereference_var): New function, broken out of...
	(gfc_conv_variable): ...here. Call outlined function instead.
	* trans-openmp.c (gfc_trans_omp_array_section): New function, broken out
	of...
	(gfc_trans_omp_clauses): ...here. Separate out OpenACC derived
	type/polymorphic class pointer handling. Call above outlined function.
	* trans.h (gfc_conv_component_ref, conv_parent_component_references,
	gfc_auto_dereference_var): Add prototypes.

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

	* trans-openmp.c (gfc_omp_finish_clause): Guard addition of clauses for
	pointers with DECL_P.

2019-01-09  Julian Brown  <julian@codesourcery.com>

	* cpp.c (cpp_define_builtins): Update _OPENACC define to 201711.
	* gfortran.texi: Update mentions of OpenACC version to 2.6.
	* intrinsic.texi: Likewise.

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

	* lang.opt (fopenacc-kernels): Default to "split".

2019-01-30  Thomas Schwinge  <thomas@codesourcery.com>

	* lang.opt (fopenacc-kernels): New flag.

2018-12-19  Julian Brown  <julian@codesourcery.com>
            Maciej W. Rozycki  <macro@codesourcery.com>

	* gfortran.h (gfc_omp_map_op): Add OMP_MAP_NO_ALLOC.
	* openmp.c (omp_mask2): Add OMP_CLAUSE_NO_CREATE.
	(gfc_match_omp_clauses): Support no_create.
	(OACC_PARALLEL_CLAUSES, OACC_KERNELS_CLAUSES)
	(OACC_SERIAL_CLAUSES, OACC_DATA_CLAUSES): Add
	OMP_CLAUSE_NO_CREATE.
	* trans-openmp.c (gfc_trans_omp_clauses_1): Support
	OMP_MAP_NO_ALLOC.

2018-12-20  Maciej W. Rozycki  <macro@codesourcery.com>

	* gfortran.h (gfc_statement): Add ST_OACC_SERIAL_LOOP,
	ST_OACC_END_SERIAL_LOOP, ST_OACC_SERIAL and ST_OACC_END_SERIAL
	enumeration constants.
	(gfc_exec_op): Add EXEC_OACC_SERIAL_LOOP and EXEC_OACC_SERIAL
	enumeration constants.
	* match.h (gfc_match_oacc_serial): New prototype.
	(gfc_match_oacc_serial_loop): Likewise.
	* dump-parse-tree.c (show_omp_node, show_code_node): Handle
	EXEC_OACC_SERIAL_LOOP and EXEC_OACC_SERIAL.
	* match.c (match_exit_cycle): Handle EXEC_OACC_SERIAL_LOOP.
	* openmp.c (OACC_SERIAL_CLAUSES): New macro.
	(OACC_SERIAL_CLAUSE_DEVICE_TYPE_MASK): Likewise.
	(gfc_match_oacc_serial_loop): New function.
	(gfc_match_oacc_serial): Likewise.
	(oacc_is_loop): Handle EXEC_OACC_SERIAL_LOOP.
	(resolve_omp_clauses): Handle EXEC_OACC_SERIAL.
	(oacc_is_serial): New function.
	(oacc_code_to_statement): Handle EXEC_OACC_SERIAL and
	EXEC_OACC_SERIAL_LOOP.
	(gfc_resolve_oacc_directive): Likewise.
	* parse.c (decode_oacc_directive) <'s'>: Add case for "serial"
	and "serial loop".
	(next_statement): Handle ST_OACC_SERIAL_LOOP and ST_OACC_SERIAL.
	(gfc_ascii_statement): Likewise.  Handle ST_OACC_END_SERIAL_LOOP
	and ST_OACC_END_SERIAL.
	(parse_oacc_structured_block): Handle ST_OACC_SERIAL.
	(parse_oacc_loop): Handle ST_OACC_SERIAL_LOOP and
	ST_OACC_END_SERIAL_LOOP.
	(parse_executable): Handle ST_OACC_SERIAL_LOOP and
	ST_OACC_SERIAL.
	(is_oacc): Handle EXEC_OACC_SERIAL_LOOP and EXEC_OACC_SERIAL.
	* resolve.c (gfc_resolve_blocks, gfc_resolve_code): Likewise.
	* st.c (gfc_free_statement): Likewise.
	* trans-openmp.c (gfc_trans_oacc_construct): Handle
	EXEC_OACC_SERIAL.
	(gfc_trans_oacc_combined_directive): Handle
	EXEC_OACC_SERIAL_LOOP.
	(gfc_trans_oacc_directive): Handle EXEC_OACC_SERIAL_LOOP and
	EXEC_OACC_SERIAL.
	* trans.c (trans_code): Likewise.

2017-12-21  Cesar Philippidis  <cesar@codesourcery.com>

	* types.def: (BF_FN_VOID_INT_INT_OMPFN_SIZE_PTR_PTR_PTR_VAR):
	Define.

2018-12-21  Gergö Barany  <gergo@codesourcery.com>

	* openmp.c (OACC_HOST_DATA_CLAUSES): Add OMP_CLAUSE_IF and
	OMP_CLAUSE_IF_PRESENT.

2019-01-30  Kwok Cheung Yeung  <kcy@codesourcery.com>

	* trans-openmp.c (gfc_build_conditional_assign): New.
	(gfc_build_conditional_assign_expr): New.
	(gfc_omp_finish_clause): Add conditionals to set the clause
	declaration to null and size to zero if the declaration is a
	non-present optional argument.
	(gfc_trans_omp_clauses_1): Likewise.

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

	* gfortran.h (enum gfc_omp_map_op): Add OMP_MAP_DECLARE_ALLOCATE,
	OMP_MAP_DECLARE_DEALLOCATE.
	(gfc_omp_clauses): Add update_allocatable.
	* trans-array.c (gfc_array_allocate): Call
	gfc_trans_oacc_declare_allocate for decls that have oacc_declare_create
	attribute set.
	* trans-decl.c (add_attributes_to_decl): Enable lowering of OpenACC
	declare create, declare copyin and declare deviceptr clauses.
	(find_module_oacc_declare_clauses): Relax oacc_declare_create to
	OMP_MAP_ALLOC, and oacc_declare_copyin to OMP_MAP_TO, in order to
	match OpenACC 2.5 semantics.
	(finish_oacc_declare): Reset module_oacc_clauses before scanning each
	namespace.
	* trans-openmp.c (gfc_trans_omp_clauses): Use GOMP_MAP_ALWAYS_POINTER
	(for update directive) or GOMP_MAP_FIRSTPRIVATE_POINTER (otherwise) for
	allocatable scalar decls.  Handle OMP_MAP_DECLARE_{ALLOCATE,DEALLOCATE}
	clauses.
	(gfc_trans_oacc_executable_directive): Use GOMP_MAP_ALWAYS_POINTER
	for allocatable scalar data clauses inside acc update directives.
	(gfc_trans_oacc_declare_allocate): New function.
	* trans-stmt.c (gfc_trans_allocate): Call
	gfc_trans_oacc_declare_allocate for decls with oacc_declare_create
	attribute set.
	(gfc_trans_deallocate): Likewise.
	* trans.h (gfc_trans_oacc_declare_allocate): Declare.

2018-12-13  Cesar Philippidis  <cesar@codesourcery.com>
            Nathan Sidwell  <nathan@acm.org>
            Julian Brown  <julian@codesourcery.com>

        * openmp.c (resolve_oacc_loop_blocks): Emit an error on orphan OpenACC
        gang reductions.
        * trans-openmp.c (gfc_omp_clause_copy_ctor): Permit reductions.

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

	* openmp.c (gfc_match_omp_map_clause): Re-write handling of the
	deviceptr clause.  Add new common_blocks argument.  Propagate it to
	gfc_match_omp_variable_list.
	(gfc_match_omp_clauses): Update calls to gfc_match_omp_map_clauses.
	(resolve_positive_int_expr): Promote the warning to an error.
	(check_array_not_assumed): Remove pointer check.
	(resolve_oacc_nested_loops): Error on do concurrent loops.
	* trans-openmp.c (gfc_omp_finish_clause): Don't create pointer data
	mappings for deviceptr clauses.
	(gfc_trans_omp_clauses): Likewise.

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

	* gfortran.h (gfc_omp_clauses): Add nohost members.
	* openmp.c (omp_mask2): Add OMP_CLAUSE_NOHOST.
	(gfc_match_omp_clauses): Handle OMP_CLAUSE_NOHOST.
	(gfc_match_oacc_routine): Set oacc_function_nohost when appropriate.
	* gfortran.h (symbol_attribute): Add oacc_function_nohost member.
	* trans-openmp.c (gfc_add_omp_offload_attributes): Use it to decide
	whether to generate an OMP_CLAUSE_NOHOST clause.
	(gfc_trans_omp_clauses_1): Unreachable code to generate an
	OMP_CLAUSE_NOHOST clause.

2018-12-14  Julian Brown  <julian@codesourcery.com>

	* 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_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-openmp.c (gfc_omp_privatize_by_reference): Support component
	refs.
	(gfc_trans_omp_clauses): Support component refs, attach and detach
	clauses.

2015-08-20  Joseph Myers  <joseph@codesourcery.com>

	PR libgomp/81886
	* gfortranspec.c (lang_specific_pre_link): Update call to do_spec.