1 files changed, 26 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/pr15349.c b/gcc/testsuite/gcc.dg/tree-ssa/pr15349.c
new file mode 100644
index 000000000..9f15d727f
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/pr15349.c
@@ -0,0 +1,26 @@
+/* PR 15349.  Merge two PHI nodes.  */
+/* { dg-do compile } */
+/* { dg-options "-O1 -fdump-tree-mergephi" } */
+
+int
+foo (int a, int b)
+{
+  int t;
+
+  if (b)
+    {
+      if (a)
+	t = 3;
+      else
+	t = 5;
+
+      a = 0;
+    }
+  else
+    t = 7;
+
+  return t;
+}
+
+/* { dg-final { scan-tree-dump-times "PHI" 1 "mergephi2"} } */
+/* { dg-final { cleanup-tree-dump "mergephi\[1-2\]" } } */