[PATCH, 1/3, OpenMP] Target mapping changes for OpenMP 5.0, front-end parts

[Chung-Lin Tang]

Ping this patch set.

Thanks,
Chung-Lin

On 2020/9/1 9:16 PM, Chung-Lin Tang wrote:
> Hi Jakub,
> this patch set implements parts of the target mapping changes introduced
> in OpenMP 5.0, mainly the attachment requirements for pointer-based
> list items, and the clause ordering.
> 
> The first patch here are the C/C++ front-end changes.
> 
> The entire set of changes has been tested for without regressions for
> the compiler and libgomp. Hope this is ready to commit to master.
> 
> Thanks,
> Chung-Lin
> 
>          gcc/c-family/
>          * c-common.h (c_omp_adjust_clauses): New declaration.
>          * c-omp.c (c_omp_adjust_clauses): New function.
> 
>          gcc/c/
>          * c-parser.c (c_parser_omp_target_data): Add use of
>          new c_omp_adjust_clauses function. Add GOMP_MAP_ATTACH_DETACH as
>      handled map clause kind.
>          (c_parser_omp_target_enter_data): Likewise.
>          (c_parser_omp_target_exit_data): Likewise.
>          (c_parser_omp_target): Likewise.
>          * c-typeck.c (handle_omp_array_sections): Adjust COMPONENT_REF case to
>          use GOMP_MAP_ATTACH_DETACH map kind for C_ORT_OMP region type.
>          (c_finish_omp_clauses): Adjust bitmap checks to allow struct decl and
>          same struct field access to co-exist on OpenMP construct.
> 
>          gcc/cp/
>          * parser.c (cp_parser_omp_target_data): Add use of
>          new c_omp_adjust_clauses function. Add GOMP_MAP_ATTACH_DETACH as
>          handled map clause kind.
>          (cp_parser_omp_target_enter_data): Likewise.
>      (cp_parser_omp_target_exit_data): Likewise.
>      (cp_parser_omp_target): Likewise.
>      * semantics.c (handle_omp_array_sections): Adjust COMPONENT_REF case to
>      use GOMP_MAP_ATTACH_DETACH map kind for C_ORT_OMP region type. Fix
>      interaction between reference case and attach/detach.
>      (finish_omp_clauses): Adjust bitmap checks to allow struct decl and
>      same struct field access to co-exist on OpenMP construct.