The Tor Browser / file comparison
comparison: dom/bindings/test/test_throwing_method_noDCE.html
dom/bindings/test/test_throwing_method_noDCE.html
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:f471e6234ad0 |
|---|---|
| 1 <!DOCTYPE html> | |
| 2 <meta charset=utf-8> | |
| 3 <title>Test that we don't DCE functions that can throw</title> | |
| 4 <script src="/resources/testharness.js"></script> | |
| 5 <script src="/resources/testharnessreport.js"></script> | |
| 6 <div id="log"></div> | |
| 7 <script> | |
| 8 test(function() { | |
| 9 function test(root) { | |
| 10 var threw = false; | |
| 11 try { | |
| 12 root.querySelectorAll(""); | |
| 13 } catch(e){ threw = true; }; | |
| 14 // Hot loop to make sure the JIT heuristics ion-compile this function even | |
| 15 // though it's throwing exceptions (which would normally make us back off | |
| 16 // of ion compilation). | |
| 17 for (var i=0; i<1500; i++) {} | |
| 18 return threw; | |
| 19 } | |
| 20 | |
| 21 var threw = false; | |
| 22 var el = document.createElement("div"); | |
| 23 for (var i=0; i<200; i++) | |
| 24 threw = test(el); | |
| 25 assert_true(threw); | |
| 26 }, "Shouldn't optimize away throwing functions"); | |
| 27 </script> |
