diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/testBitwise.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/testBitwise.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,12 @@
+function testBitwise() {
+    var x = 10000;
+    var y = 123456;
+    var z = 987234;
+    for (var i = 0; i < 50; i++) {
+        x = x ^ y;
+        y = y | z;
+        z = ~x;
+    }
+    return x + y + z;
+}
+assertEq(testBitwise(), -1298);