Fix PR46404: call scev_reset to reset the number of iterations as well.

2010-12-16  Sebastian Pop  <sebastian.pop@amd.com>

	PR tree-optimization/46404
	* graphite-clast-to-gimple.c (gloog): Call scev_reset.

	* gcc.dg/graphite/pr46404-1.c: New.

From-SVN: r167954

gcc/ChangeLog

+2010-12-16  Sebastian Pop  <sebastian.pop@amd.com>
+
+	PR tree-optimization/46404
+	* graphite-clast-to-gimple.c (gloog): Call scev_reset.
+
 2010-12-16  Anatoly Sokolov  <aesok@post.ru>
 
 	* config/sh/sh.h (OUTPUT_ADDR_CONST_EXTRA): Remove.

gcc/graphite-clast-to-gimple.c

@@ -1555,7 +1555,7 @@ gloog (scop_p scop, htab_t bb_pbb_mapping)
 		   &newivs, newivs_index,
 		   bb_pbb_mapping, 1, params_index);
   graphite_verify ();
-  scev_reset_htab ();
+  scev_reset ();
   recompute_all_dominators ();
   graphite_verify ();
 

gcc/testsuite/ChangeLog

+2010-12-16  Sebastian Pop  <sebastian.pop@amd.com>
+
+	PR tree-optimization/46404
+	* gcc.dg/graphite/pr46404-1.c: New.
+
 2010-12-16  Jakub Jelinek  <jakub@redhat.com>
 
 	PR debug/46893

gcc/testsuite/gcc.dg/graphite/pr46404-1.c

+/* { dg-options "-O -fgraphite-identity -fno-tree-scev-cprop" } */
+
+int
+huft_build (unsigned *b)
+{
+  int k;
+  for (k = 0; k <= 10; k++)
+    if (foo ());
+}
+int
+inflate_fixed ()
+{
+  int i;
+  unsigned l[288];
+  for (i = 0; i < 144; i++)
+    l[i] = 8;
+  for (; i < 256; i++)
+    l[i] = 9;
+  for (; i < 280; i++)
+    l[i] = 7;
+  for (; i < 288; i++)
+    l[i] = 8;
+  if ((i = huft_build (l)) != 0)
+    return i;
+  for (i = 0; i < 30; i++)
+    l[i] = 5;
+}