diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/jaeger/argumentsOptimize-2.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/jaeger/argumentsOptimize-2.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,27 @@
+
+function foo() {
+  var x = 0;
+  for (var i = arguments.length - 1; i >= 0; i--)
+    x += arguments[i];
+  return x;
+}
+
+function bar() {
+  var x = 0;
+  for (var i = 0; i < arguments.length; i++)
+    x += arguments[i];
+  return x;
+}
+
+function baz(a,b,c,d,e) {
+  var x = 0;
+  for (var i = 0; i < arguments.length; i++)
+    x += arguments[i];
+  return x;
+}
+
+for (var i = 0; i < 10; i++) {
+  assertEq(foo(1,2,3,4,5), 15);
+  assertEq(bar(1,2.5,true,{valueOf:function() { return 10}},"five"), "14.5five");
+  assertEq(baz(1,2,3,4,5), 15);
+}