1 files changed, 38 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/20041008-1.c b/gcc/testsuite/gcc.dg/tree-ssa/20041008-1.c
new file mode 100644
index 00000000000..ca24427b65c
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/20041008-1.c
@@ -0,0 +1,38 @@
+/* { dg-do run } */ 
+/* { dg-options "-O2" } */
+
+struct A {
+    int x;
+    int y;
+};
+
+baz (struct A *a)
+{
+  a->x = 3;
+  a->y = 2;
+}
+
+foo (int i)
+{
+  struct A a;
+
+  /* Make sure we can't scalarize 'a'.  */
+  baz (&a);
+
+  if (i > 10)
+    a.x = i;
+  else
+    a.x = i;
+
+  /* Copy propagation should prove that this predicate is always false.  */
+  if (a.x != i)
+    link_error ();
+
+  return a.x;
+}
+
+main ()
+{
+  foo (30);
+  return 0;
+}