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Paul-Antoine Arras bca8b13bd7 OpenMP: Fortran front-end support for dispatch + adjust_args 
This patch adds support for the `dispatch` construct and the `adjust_args`
clause to the Fortran front-end.

Handling of `adjust_args` across translation units is missing due to PR115271.

Minor modifications to the C++ FE and the ME are also folded into this patch as
a side effect of the Fortran work.

gcc/c-family/ChangeLog:

	* c-attribs.cc: (c_common_gnu_attributes): Rename "omp declare variant
	variant adjust_args" into "omp declare variant variant args" to also
	accommodate append_args.

gcc/cp/ChangeLog:

	* parser.cc (cp_parser_omp_dispatch): Handle INDIRECT_REF.

gcc/fortran/ChangeLog:

	* dump-parse-tree.cc (show_omp_clauses): Handle novariants and nocontext
	clauses.
	(show_omp_node): Handle EXEC_OMP_DISPATCH.
	(show_code_node): Likewise.
	* frontend-passes.cc (gfc_code_walker): Handle novariants and nocontext.
	* gfortran.h (enum gfc_statement): Add ST_OMP_DISPATCH.
	(symbol_attribute): Add omp_declare_variant_need_device_ptr.
	(gfc_omp_clauses): Add novariants and nocontext.
	(gfc_omp_declare_variant): Add need_device_ptr_arg_list.
	(enum gfc_exec_op): Add EXEC_OMP_DISPATCH.
	* match.h (gfc_match_omp_dispatch): Declare.
	* openmp.cc (gfc_free_omp_clauses): Free novariants and nocontext
	clauses.
	(gfc_free_omp_declare_variant_list): Free need_device_ptr_arg_list
	namelist.
	(enum omp_mask2): Add OMP_CLAUSE_NOVARIANTS and OMP_CLAUSE_NOCONTEXT.
	(gfc_match_omp_clauses): Handle OMP_CLAUSE_NOVARIANTS and
	OMP_CLAUSE_NOCONTEXT.
	(OMP_DISPATCH_CLAUSES): Define.
	(gfc_match_omp_dispatch): New function.
	(gfc_match_omp_declare_variant): Parse adjust_args.
	(resolve_omp_clauses): Handle adjust_args, novariants and nocontext.
	Adjust handling of OMP_LIST_IS_DEVICE_PTR.
	(icode_code_error_callback): Handle EXEC_OMP_DISPATCH.
	(omp_code_to_statement): Likewise.
	(resolve_omp_dispatch): New function.
	(gfc_resolve_omp_directive): Handle EXEC_OMP_DISPATCH.
	* parse.cc (decode_omp_directive): Match dispatch.
	(next_statement): Handle ST_OMP_DISPATCH.
	(gfc_ascii_statement): Likewise.
	(parse_omp_dispatch): New function.
	(parse_executable): Handle ST_OMP_DISPATCH.
	* resolve.cc (gfc_resolve_blocks): Handle EXEC_OMP_DISPATCH.
	* st.cc (gfc_free_statement): Likewise.
	* trans-decl.cc (create_function_arglist): Declare.
	(gfc_get_extern_function_decl): Call it.
	* trans-openmp.cc (gfc_trans_omp_clauses): Handle novariants and
	nocontext.
	(replace_omp_dispatch_call): New function.
	(gfc_trans_omp_dispatch): New function.
	(gfc_trans_omp_directive): Handle EXEC_OMP_DISPATCH.
	(gfc_trans_omp_declare_variant): Handle adjust_args.
	* trans.cc (trans_code): Handle EXEC_OMP_DISPATCH:.

gcc/ChangeLog:

	* gimplify.cc (gimplify_call_expr): Fix handling of need_device_ptr for
	type(c_ptr). Fix handling of nested function calls in a dispatch region.
	(find_ifn_gomp_dispatch): Return the IFN without stripping it.
	(gimplify_omp_dispatch): Keep IFN_GOMP_DISPATCH until
	gimplify_call_expr.

libgomp/ChangeLog:
	* testsuite/libgomp.fortran/declare-variant-2-aux.f90: New test.
	* testsuite/libgomp.fortran/declare-variant-2.f90: New test (xfail).
	* testsuite/libgomp.fortran/dispatch-1.f90: New test.
	* testsuite/libgomp.fortran/dispatch-2.f90: New test.
	* testsuite/libgomp.fortran/dispatch-3.f90: New test.

gcc/testsuite/ChangeLog:

	* g++.dg/gomp/dispatch-3.C: Update scan dumps.
	* gfortran.dg/gomp/declare-variant-2.f90: Update dg-error.
	* gfortran.dg/gomp/adjust-args-1.f90: New test.
	* gfortran.dg/gomp/adjust-args-2.f90: New test.
	* gfortran.dg/gomp/adjust-args-2a.f90: New test.
	* gfortran.dg/gomp/adjust-args-3.f90: New test.
	* gfortran.dg/gomp/adjust-args-4.f90: New test.
	* gfortran.dg/gomp/adjust-args-5.f90: New test.
	* gfortran.dg/gomp/adjust-args-6.f90: New test.
	* gfortran.dg/gomp/adjust-args-7.f90: New test.
	* gfortran.dg/gomp/adjust-args-8.f90: New test.
	* gfortran.dg/gomp/adjust-args-9.f90: New test.
	* gfortran.dg/gomp/dispatch-1.f90: New test.
	* gfortran.dg/gomp/dispatch-2.f90: New test.
	* gfortran.dg/gomp/dispatch-3.f90: New test.
	* gfortran.dg/gomp/dispatch-4.f90: New test.
	* gfortran.dg/gomp/dispatch-5.f90: New test.
	* gfortran.dg/gomp/dispatch-6.f90: New test.
	* gfortran.dg/gomp/dispatch-7.f90: New test.
	* gfortran.dg/gomp/dispatch-8.f90: New test.
	* gfortran.dg/gomp/dispatch-9.f90: New test.
	* gfortran.dg/gomp/dispatch-9a.f90: New test.
	* gfortran.dg/gomp/dispatch-10.f90: New test.
2025-01-02 21:18:56 +01:00
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gcc OpenMP: Fortran front-end support for dispatch + adjust_args 2025-01-02 21:18:56 +01:00
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libgo syscall: don't define syscall stub on Hurd 2024-10-30 11:33:07 -07:00
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config-ml.in config-ml.in: Fix multi-os-dir search 2024-05-06 12:08:28 +08:00
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configure Revert "PR81358: Enable automatic linking of libatomic." 2024-12-18 22:03:38 +05:30
configure.ac Revert "PR81358: Enable automatic linking of libatomic." 2024-12-18 22:03:38 +05:30
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README 

This directory contains the GNU Compiler Collection (GCC).

The GNU Compiler Collection is free software.  See the files whose
names start with COPYING for copying permission.  The manuals, and
some of the runtime libraries, are under different terms; see the
individual source files for details.

The directory INSTALL contains copies of the installation information
as HTML and plain text.  The source of this information is
gcc/doc/install.texi.  The installation information includes details
of what is included in the GCC sources and what files GCC installs.

See the file gcc/doc/gcc.texi (together with other files that it
includes) for usage and porting information.  An online readable
version of the manual is in the files gcc/doc/gcc.info*.

See http://gcc.gnu.org/bugs/ for how to report bugs usefully.

Copyright years on GCC source files may be listed using range
notation, e.g., 1987-2012, indicating that every year in the range,
inclusive, is a copyrightable year that could otherwise be listed
individually.