diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/ion/bug679581.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/ion/bug679581.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,11 @@
+function f0(p0) {
+    var v0;
+    var v1 = 0;
+    var v2 = (v0 ^ v0) + v0;
+    if (p0 | 0)
+        v1 = v0;
+    do break; while (v0);
+    p0 ^ v1;
+}
+print(f0(1));
+