1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/dom/bindings/test/test_throwing_method_noDCE.html Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,27 @@
1.4 +<!DOCTYPE html>
1.5 +<meta charset=utf-8>
1.6 +<title>Test that we don't DCE functions that can throw</title>
1.7 +<script src="/resources/testharness.js"></script>
1.8 +<script src="/resources/testharnessreport.js"></script>
1.9 +<div id="log"></div>
1.10 +<script>
1.11 +test(function() {
1.12 + function test(root) {
1.13 + var threw = false;
1.14 + try {
1.15 + root.querySelectorAll("");
1.16 + } catch(e){ threw = true; };
1.17 + // Hot loop to make sure the JIT heuristics ion-compile this function even
1.18 + // though it's throwing exceptions (which would normally make us back off
1.19 + // of ion compilation).
1.20 + for (var i=0; i<1500; i++) {}
1.21 + return threw;
1.22 + }
1.23 +
1.24 + var threw = false;
1.25 + var el = document.createElement("div");
1.26 + for (var i=0; i<200; i++)
1.27 + threw = test(el);
1.28 + assert_true(threw);
1.29 +}, "Shouldn't optimize away throwing functions");
1.30 +</script>
