Add testcase for PR46970.

2011-01-18  Sebastian Pop  <sebastian.pop@amd.com>

	PR tree-optimization/46970
	* gcc.dg/graphite/pr46970.c: New.

From-SVN: r169257

gcc/testsuite/ChangeLog

 2011-01-25  Sebastian Pop  <sebastian.pop@amd.com>
 
+	PR tree-optimization/46970
+	* gcc.dg/graphite/pr46970.c: New.
+
+2011-01-25  Sebastian Pop  <sebastian.pop@amd.com>
+
 	PR tree-optimization/46215
 	* gcc.dg/graphite/pr46215.c: New.
 

gcc/testsuite/gcc.dg/graphite/pr46970.c

+/* { dg-do run } */
+/* { dg-options "-Os -ftree-loop-linear" } */
+
+#define N 16
+
+int
+main1 (int n, int *a)
+{
+  int i, j;
+
+  for (i = 0; i < n; i++)
+    for (j = 0; j < n; j++)
+      a[j] = i + n;
+
+  for (j = 0; j < n; j++)
+    if (a[j] != i + n - 1)
+      __builtin_abort ();
+
+  return 0;
+}
+
+int
+main ()
+{
+  int a[N];
+  main1 (N, a);
+  return 0;
+}