diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/ion/bug930990.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/ion/bug930990.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,8 @@
+var f32 = new Float32Array(10);
+f32[0] = 5;
+var i = 0;
+do {
+    f32[i + 1] = f32[i] - 1;
+    i += 1;
+} while (f32[i]);
+