[OpenACC] Update OpenACC data clause semantics to the 2.5 behavior - middle end

[Jakub Jelinek]

On Tue, Jun 19, 2018 at 10:00:37AM -0700, Cesar Philippidis wrote:
> This patch implements the OpenACC 2.5 data clause semantics in the
> middle end.
> 
> Is it OK for trunk?
> 
> Cesar

> 2018-06-19  Chung-Lin Tang <cltang@codesourcery.com>
> 	    Thomas Schwinge <thomas@codesourcery.com>
> 	    Cesar Philippidis  <cesar@codesourcery.com>
> 
> 	gcc/c-family/
> 	* c-pragma.h (enum pragma_omp_clause): Add
> 	PRAGMA_OACC_CLAUSE_{FINALIZE,IF_PRESENT}. Remove
> 	PRAGMA_OACC_CLAUSE_PRESENT_OR_{COPY,COPYIN,COPYOUT,CREATE}.
> 
> 	gcc/
> 	* gimplify.c (gimplify_scan_omp_clauses): Add support for
> 	OMP_CLAUSE_{IF_PRESENT,FINALIZE}.
> 	(gimplify_adjust_omp_clauses): Likewise.
> 	(gimplify_oacc_declare_1): Add support for GOMP_MAP_RELEASE, remove
> 	support for GOMP_MAP_FORCE_{ALLOC,TO,FROM,TOFROM}.
> 	(gimplify_omp_target_update): Update handling of acc update and
> 	enter/exit data.
> 	* omp-low.c (install_var_field): Remove unused parameter
> 	base_pointers_restrict.
> 	(scan_sharing_clauses): Remove base_pointers_restrict parameter.
> 	Update call to install_var_field. Handle OMP_CLAUSE_{IF_PRESENT,
> 	FINALIZE}
> 	(omp_target_base_pointers_restrict_p): Delete.
> 	(scan_omp_target): Update call to scan_sharing_clauses.
> 	* tree-core.h (enum omp_clause_code): Add OMP_CLAUSE_{IF_PRESENT,
> 	FINALIZE}.
> 	* tree-nested.c (convert_nonlocal_omp_clauses): Handle
> 	OMP_CLAUSE_{IF_PRESENT,FINALIZE}.
> 	(convert_local_omp_clauses): Likewise.
> 	* tree-pretty-print.c (dump_omp_clause): Likewise.
> 	* tree.c (omp_clause_num_ops): Add entries for 	OMP_CLAUSE_{IF_PRESENT,
> 	FINALIZE}.
> 	(omp_clause_code_name): Likewise.

Ok.

	Jakub