1 files changed, 19 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-26.c b/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-26.c
new file mode 100644
index 000000000..2b8e8e063
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-26.c
@@ -0,0 +1,19 @@
+/* { dg-do compile } */
+/* { dg-options "-O -fno-tree-sra -fdump-tree-fre-details" } */
+
+union U {
+  float f;
+  int i;
+};
+
+int foo (union U *p)
+{
+  union U u;
+  p->f = 0.0;
+  u = *p;
+  return u.i;
+}
+
+/* avr has 16 bit int and 32 bit float */
+/* { dg-final { scan-tree-dump "Replaced u.i with 0 in" "fre" {xfail avr-*-* } } } */
+/* { dg-final { cleanup-tree-dump "fre" } } */