From: Sebastian Pop <sebastian.pop@amd.com>
Date: Sat, 17 Jan 2009 15:13:12 +0000 (+0000)
Subject: graphite.c (graphite_trans_scop_block): Do not block single nested loops.
X-Git-Tag: releases/gcc-4.4.0~822
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=8137e465bfbb45b24ce597dcc1ed52e27ec6b316;p=thirdparty%2Fgcc.git

graphite.c (graphite_trans_scop_block): Do not block single nested loops.

2009-01-17  Sebastian Pop  <sebastian.pop@amd.com>
	    Tobias Grosser  <tobi.grosser@amd.com>

	* graphite.c (graphite_trans_scop_block): Do not block single
	nested loops.


Co-Authored-By: Tobias Grosser <tobi.grosser@amd.com>

From-SVN: r143468
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 77cf99cb6dde..5c356fc8c04f 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2009-01-17  Sebastian Pop  <sebastian.pop@amd.com>
+	    Tobias Grosser  <tobi.grosser@amd.com>
+
+	* graphite.c (graphite_trans_scop_block): Do not block single
+	nested loops.
+
 2009-01-16  Alexandre Oliva  <aoliva@redhat.com>
 
 	* ebitmap.h (ebitmap_iter_init): Initialize all fields.
diff --git a/gcc/graphite.c b/gcc/graphite.c
index 4e301e47c542..5377d724b9be 100644
--- a/gcc/graphite.c
+++ b/gcc/graphite.c
@@ -5948,7 +5948,7 @@ graphite_trans_scop_block (scop_p scop)
   j++;
 
   /* Found perfect loop nest.  */
-  if (last_nb_loops - j > 0)
+  if (last_nb_loops - j >= 2)
     transform_done |= graphite_trans_loop_block (bbs, last_nb_loops - j);
   VEC_free (graphite_bb_p, heap, bbs);