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diff --git a/dom/bindings/test/test_throwing_method_noDCE.html b/dom/bindings/test/test_throwing_method_noDCE.html
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+++ b/dom/bindings/test/test_throwing_method_noDCE.html
@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>Test that we don't DCE functions that can throw</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+/* global test, assert_true */
+test(function() {
+  function test(root) {
+    var threw = false;
+    try {
+        root.querySelectorAll("");
+    } catch (e) { threw = true; }
+    // Hot loop to make sure the JIT heuristics ion-compile this function even
+    // though it's throwing exceptions (which would normally make us back off
+    // of ion compilation).
+    for (var i = 0; i < 1500; i++) {
+      // empty
+    }
+    return threw;
+  }
+
+  var threw = false;
+  var el = document.createElement("div");
+  for (var i = 0; i < 200; i++)
+      threw = test(el);
+  assert_true(threw);
+}, "Shouldn't optimize away throwing functions");
+</script>