1 files changed, 28 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/loop-6.c b/gcc/testsuite/gcc.dg/tree-ssa/loop-6.c
new file mode 100644
index 000000000..992f671e4
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/loop-6.c
@@ -0,0 +1,28 @@
+/* { dg-do compile } */
+/* { dg-options "-O1 -funswitch-loops -fdump-tree-unswitch-details -fdump-tree-optimized" } */
+
+int ch;
+int a[100];
+
+void xxx(void)
+{
+  int i;
+
+  for (i = 0; i < 100; i++)
+    {
+      if (ch)
+	a[i] = ch;
+      else
+	a[i] = i;
+    }
+}
+
+/* Loop should be unswitched.  */
+
+/* { dg-final { scan-tree-dump-times "Unswitching loop" 1 "unswitch" } } */
+/* { dg-final { cleanup-tree-dump "unswitch" } } */
+
+/* In effect there should be exactly three conditional jumps in the final program.  */
+
+/* { dg-final { scan-tree-dump-times "else" 3 "optimized" } } */
+/* { dg-final { cleanup-tree-dump "optimized" } } */