c40c6a50fd
This patch adds support for declare simd and declare variant in attribute syntax. Either in attribute-specifier-seq at the start of declaration, in that case it has similar restriction to pragma-syntax, that there is a single function declaration/definition in the declaration, rather than variable declaration or more than one function declarations or mix of function and variable declarations. Or after the declarator id, in that case it applies just to the single function declaration and the same declaration can have multiple such attributes. Or both. Furthermore, cp_parser_statement has been adjusted so that it doesn't accept [[omp::directive (parallel)]] etc. before statements that don't take attributes at all, or where those attributes don't appertain to the statement but something else (e.g. to label, using directive, declaration, etc.). 2021-08-10 Jakub Jelinek <jakub@redhat.com> gcc/cp/ * parser.h (struct cp_omp_declare_simd_data): Remove in_omp_attribute_pragma and clauses members, add loc and attribs. (struct cp_oacc_routine_data): Remove loc member, add clauses member. * parser.c (cp_finalize_omp_declare_simd): New function. (cp_parser_handle_statement_omp_attributes): Mention in function comment the function is used also for attribute-declaration. (cp_parser_handle_directive_omp_attributes): New function. (cp_parser_statement): Don't call cp_parser_handle_statement_omp_attributes if statement doesn't have attribute-specifier-seq at the beginning at all or if if those attributes don't appertain to the statement. (cp_parser_simple_declaration): Call cp_parser_handle_directive_omp_attributes and cp_finalize_omp_declare_simd. (cp_parser_explicit_instantiation): Likewise. (cp_parser_init_declarator): Initialize prefix_attributes only after parsing declarators. (cp_parser_direct_declarator): Call cp_parser_handle_directive_omp_attributes and cp_finalize_omp_declare_simd. (cp_parser_member_declaration): Likewise. (cp_parser_single_declaration): Likewise. (cp_parser_omp_declare_simd): Don't initialize data.in_omp_attribute_pragma, instead initialize data.attribs[0] and data.attribs[1]. (cp_finish_omp_declare_variant): Remove in_omp_attribute_pragma argument, instead use parser->lexer->in_omp_attribute_pragma. (cp_parser_late_parsing_omp_declare_simd): Adjust cp_finish_omp_declare_variant caller. Handle attribute-syntax declare simd/variant. gcc/testsuite/ * g++.dg/gomp/attrs-1.C (bar): Add missing semicolon after [[omp::directive (threadprivate (t2))]]. Add tests with if/while/switch after parallel in attribute syntax. (corge): Add missing omp:: before directive. * g++.dg/gomp/attrs-2.C (bar): Add missing semicolon after [[omp::directive (threadprivate (t2))]]. * g++.dg/gomp/attrs-10.C: New test. * g++.dg/gomp/attrs-11.C: New test.
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