omp-low.c (MASK_GANG, [...]): Delete.

	* omp-low.c (MASK_GANG, MASK_WORKER, MASK_VECTOR): Delete.
	(extract_omp_for_data): Remove OpenACC special handling of
	chunking.

From-SVN: r229499

gcc/ChangeLog

 2015-10-28  Nathan Sidwell  <nathan@codesourcery.com>
 
+	* omp-low.c (MASK_GANG, MASK_WORKER, MASK_VECTOR): Delete.
+	(extract_omp_for_data): Remove OpenACC special handling of
+	chunking.
+
 	* config/nvptx/nvptx.c (nvptx_print_operand): Remove 'd' case.
 	(struct parallel): Update comment.
 	(nvptx_reorg): Likewise.

gcc/omp-low.c

@@ -137,12 +137,6 @@ struct omp_region
   gomp_ordered *ord_stmt;
 };
 
-/* Levels of parallelism as defined by OpenACC.  Increasing numbers
-   correspond to deeper loop nesting levels.  */
-#define MASK_GANG 1
-#define MASK_WORKER 2
-#define MASK_VECTOR 4
-
 /* Context structure.  Used to store information about each parallel
    directive in the code.  */
 
@@ -840,15 +834,6 @@ extract_omp_for_data (gomp_for *for_stmt, struct omp_for_data *fd,
     }
   else if (loops)
     loops[0] = fd->loop;
-
-  /* For OpenACC loops, force a chunk size of one, as this avoids the default
-    scheduling where several subsequent iterations are being executed by the
-    same thread.  */
-  if (gimple_omp_for_kind (for_stmt) == GF_OMP_FOR_KIND_OACC_LOOP)
-    {
-      gcc_assert (fd->chunk_size == NULL_TREE);
-      fd->chunk_size = build_int_cst (TREE_TYPE (fd->loop.v), 1);
-    }
 }