diff --git a/llvm/test/irreducible.ll b/llvm/test/irreducible.ll
new file mode 100644
index 000000000000..4daed8a2b34f
--- /dev/null
+++ b/llvm/test/irreducible.ll
@@ -0,0 +1,14 @@
+implementation
+
+;; This is an irreducible flow graph
+
+void "irreducible"(bool %cond)
+begin
+	br bool %cond, label %X, label %Y
+
+X:
+	br label %Y
+Y:
+	br label %X
+end
+