graphite-optimize-isl.c (get_schedule_for_node_st): Allow --param…

graphite-optimize-isl.c (get_schedule_for_node_st): Allow --param loop-block-tile-size=0 to disable tiling.

2017-09-27  Richard Biener  <rguenther@suse.de>

	* graphite-optimize-isl.c (get_schedule_for_node_st): Allow
	--param loop-block-tile-size=0 to disable tiling.

From-SVN: r253227

gcc/ChangeLog

 2017-09-27  Richard Biener  <rguenther@suse.de>
 
+	* graphite-optimize-isl.c (get_schedule_for_node_st): Allow
+	--param loop-block-tile-size=0 to disable tiling.
+
+2017-09-27  Richard Biener  <rguenther@suse.de>
+
 	* doc/invoke.texi (graphite-max-bbs-per-function): Remove.
 	(graphite-max-nb-scop-params): Document special value zero.
 	* domwalk.h (dom_walker::STOP): New symbolical constant.

gcc/graphite-optimize-isl.c

@@ -64,7 +64,10 @@ get_schedule_for_node_st (__isl_take isl_schedule_node *node, void *user)
   if (type != isl_schedule_node_leaf)
     return node;
 
-  if (dims <= 1 || !isl_schedule_node_band_get_permutable (node))
+  long tile_size = PARAM_VALUE (PARAM_LOOP_BLOCK_TILE_SIZE);
+  if (dims <= 1
+      || tile_size == 0
+      || !isl_schedule_node_band_get_permutable (node))
     {
       if (dump_file && dump_flags)
 	fprintf (dump_file, "not tiled\n");
@@ -74,7 +77,6 @@ get_schedule_for_node_st (__isl_take isl_schedule_node *node, void *user)
   /* Tile loops.  */
   space = isl_schedule_node_band_get_space (node);
   isl_multi_val *sizes = isl_multi_val_zero (space);
-  long tile_size = PARAM_VALUE (PARAM_LOOP_BLOCK_TILE_SIZE);
   isl_ctx *ctx = isl_schedule_node_get_ctx (node);
 
   for (unsigned i = 0; i < dims; i++)