1 files changed, 26 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/pr32964.c b/gcc/testsuite/gcc.dg/tree-ssa/pr32964.c
new file mode 100644
index 000000000..18e73f939
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/pr32964.c
@@ -0,0 +1,26 @@
+/* { dg-do compile } */
+/* { dg-options "-O1 -fdump-tree-optimized" } */
+
+union A
+{
+ float a;
+};
+
+float t(float a)
+{
+  union A a1, a2, a3;
+  int i;
+
+  a1.a = a;
+  for(i = 0; i<100; i++)
+    {
+      a2 = a1;
+      a2.a += a;
+      a1 = a2;
+  }
+  a3 = a1;
+  return a3.a;
+}
+
+/* { dg-final { scan-tree-dump-times "union" 0 "optimized"} } */
+/* { dg-final { cleanup-tree-dump "optimized" } } */