From: Sebastian Pop <sebastian.pop@amd.com>
Date: Fri, 8 Jan 2010 07:39:01 +0000 (+0000)
Subject: re PR tree-optimization/42521 (ICE: in graphite_loop_normal_form, at graphite-sese... 
X-Git-Tag: releases/gcc-4.5.0~1340
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fd4a56fff2611fa6d840e801d8181bfac061f8e0;p=thirdparty%2Fgcc.git

re PR tree-optimization/42521 (ICE: in graphite_loop_normal_form, at graphite-sese-to-poly.c:2844)

Fix PR42521.

2010-01-07  Sebastian Pop  <sebastian.pop@amd.com>

	PR middle-end/42521
	* graphite.c (graphite_finalize): Call scev_reset.
	(graphite_transform_loops): Do not call scev_reset between the code
	generation of scops.

	* testsuite/gcc.dg/graphite/pr42521.c: New.

From-SVN: r155728
---

diff --git a/gcc/ChangeLog.graphite b/gcc/ChangeLog.graphite
index 379e35164577..165f7ebec972 100644
--- a/gcc/ChangeLog.graphite
+++ b/gcc/ChangeLog.graphite
@@ -1,3 +1,12 @@
+2010-01-07  Sebastian Pop  <sebastian.pop@amd.com>
+
+	PR middle-end/42521
+	* graphite.c (graphite_finalize): Call scev_reset.
+	(graphite_transform_loops): Do not call scev_reset between the code
+	generation of scops.
+
+	* testsuite/gcc.dg/graphite/pr42521.c: New.
+
 2010-01-07  Sebastian Pop  <sebastian.pop@amd.com>
 
 	* graphite-interchange.c (memory_stride_in_loop): Renamed
diff --git a/gcc/graphite.c b/gcc/graphite.c
index 83d484aae561..7037a3fa1a06 100644
--- a/gcc/graphite.c
+++ b/gcc/graphite.c
@@ -228,6 +228,7 @@ graphite_finalize (bool need_cfg_cleanup_p)
 {
   if (need_cfg_cleanup_p)
     {
+      scev_reset ();
       cleanup_tree_cfg ();
       profile_status = PROFILE_ABSENT;
       release_recorded_exits ();
@@ -279,10 +280,7 @@ graphite_transform_loops (void)
 	check_poly_representation (scop);
 
       if (transform_done)
-	{
-	  scev_reset ();
-	  need_cfg_cleanup_p = true;
-	}
+	need_cfg_cleanup_p = true;
     }
 
   htab_delete (bb_pbb_mapping);
diff --git a/gcc/testsuite/gcc.dg/graphite/pr42521.c b/gcc/testsuite/gcc.dg/graphite/pr42521.c
new file mode 100644
index 000000000000..2695df57979a
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/graphite/pr42521.c
@@ -0,0 +1,18 @@
+/* { dg-options "-O3 -fgraphite-identity" } */
+
+extern int *A;
+extern int B[][4];
+
+void foo(int im, int jm, int cond)
+{
+  int i, j;
+  if (cond)
+    for (i = 0; i < 256; i++)
+      A[i] = 0;
+
+  for (i = 0; i < im; i++)
+    for (j = 1; j < jm; j++)
+      if (jm != 8 || j != jm >> 1)
+        B[j][0] ^= B[j-1][0];
+
+}