diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/ion/bug726180.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/ion/bug726180.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,14 @@
+function orTestHelper(a, b, n)
+{
+    var k = 0;
+    for (var i = 0; i < n; i++) {
+        if (a || b)
+            return 1;
+    }
+    return 0;
+}
+
+orTestHelper("", NaN, 30)
+orTestHelper("", null, 30);
+var x = orTestHelper("", 1, 5)
+assertEq(x, 1)