diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/ion/bug886243.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/ion/bug886243.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,9 @@
+function f(x)
+{
+  if (Math.imul(0xffffffff, x)) {
+    return -x;
+  }
+  return 1;
+}
+f(0);
+f(0);