diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/testConstIf.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/testConstIf.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,6 @@
+function testConstIf() {
+    var x;
+    for (var j=0;j<5;++j) { if (1.1 || 5) { } x = 2;}
+    return x;
+}
+assertEq(testConstIf(), 2);