1 files changed, 46 insertions, 0 deletions
diff --git a/js/src/tests/js1_8_1/jit/regress-470739.js b/js/src/tests/js1_8_1/jit/regress-470739.js
new file mode 100644
index 000000000..8e8d2c5d0
--- /dev/null
+++ b/js/src/tests/js1_8_1/jit/regress-470739.js
@@ -0,0 +1,46 @@
+// |reftest| skip -- bogus perf test (bug 540512)
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+//-----------------------------------------------------------------------------
+var BUGNUMBER = 470739;
+var summary = 'TM: never abort on ==';
+var actual = '';
+var expect = '';
+
+
+//-----------------------------------------------------------------------------
+test();
+//-----------------------------------------------------------------------------
+
+function test()
+{
+  enterFunc ('test');
+  printBugNumber(BUGNUMBER);
+  printStatus (summary);
+
+  function loop()
+  {
+    var i;
+    var start = new Date();
+
+    for(i=0;i<500000;++i) { var r = (void 0) == null; }
+
+    var stop = new Date();
+    return stop - start;
+  }
+
+  var timenonjit = loop();
+  var timejit = loop();
+
+  print('time: nonjit = ' + timenonjit + ', jit = ' + timejit);
+
+  expect = true;
+  actual = timejit < timenonjit;
+
+  reportCompare(expect, actual, summary);
+
+  exitFunc ('test');
+}