diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/ion/bug995817.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/ion/bug995817.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,17 @@
+setJitCompilerOption('baseline.usecount.trigger', 1);
+let r;
+(function() {
+     function f() {
+         return (1 + -1 / 0) << null;
+     }
+     assertEq(f(), 0);
+     assertEq(f(), 0);
+
+     function g(x,y) {
+         var a = x|0;
+         var b = y|0;
+         return (a / b + a / b) | 0;
+     }
+     assertEq(g(3,4), 1);
+     assertEq(g(3,4), 1);
+})();