ivopts-lt.c: New test.

2011-08-26  Tom de Vries  <tom@codesourcery.com>

	* gcc.dg/tree-ssa/ivopts-lt.c: New test.

From-SVN: r178105

gcc/testsuite/ChangeLog

+2011-08-26  Tom de Vries  <tom@codesourcery.com>
+
+	* gcc.dg/tree-ssa/ivopts-lt.c: New test.
+
 2011-08-26  Jiangning Liu  <jiangning.liu@arm.com>
 
        * gcc.target/arm/thumb2-cond-cmp-1.c: New.

gcc/testsuite/gcc.dg/tree-ssa/ivopts-lt.c

+/* { dg-do compile } */
+/* { dg-options "-O2 -fdump-tree-ivopts" } */
+
+void
+f1 (char *p, unsigned long int i, unsigned long int n)
+{
+  p += i;
+  do
+    {
+      *p = '\0';
+      p += 1;
+      i++;
+    }
+  while (i < n);
+}
+
+/* { dg-final { scan-tree-dump-times "PHI" 1 "ivopts"} } */
+/* { dg-final { scan-tree-dump-times "PHI <p_" 1 "ivopts"} } */
+/* { dg-final { scan-tree-dump-times "p_\[0-9\]* <" 1 "ivopts"} } */
+/* { dg-final { cleanup-tree-dump "ivopts" } } */