1 files changed, 32 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/ssa-ccp-12.c b/gcc/testsuite/gcc.dg/tree-ssa/ssa-ccp-12.c
new file mode 100644
index 00000000000..8ee9eb8d0e4
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/ssa-ccp-12.c
@@ -0,0 +1,32 @@
+/* { dg-do run } */ 
+/* { dg-options "-O2" } */
+
+struct A
+{
+  int a;
+  int b;
+};
+
+struct A a;
+const int B = 42;
+
+void foo (int i)
+{
+  if (i > 10)
+    a.a = 42;
+  else
+    {
+      a.b = 21;
+      a.a = a.b + 21;
+    }
+
+  /* This should be folded to 'if (0)' as a.a and B are both 42.  */
+  if (a.a != B)
+    link_error ();
+}
+
+main ()
+{
+  foo (3);
+  return 0;
+}