1 files changed, 52 insertions, 0 deletions
diff --git a/js/src/tests/non262/jit/regress-451974-01.js b/js/src/tests/non262/jit/regress-451974-01.js
new file mode 100644
index 0000000000..548695dafe
--- /dev/null
+++ b/js/src/tests/non262/jit/regress-451974-01.js
@@ -0,0 +1,52 @@
+// |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 = 451974;
+var summary = 'TM: loops with anon functions should not be slower with jit enabled';
+var actual = '';
+var expect = '';
+
+printBugNumber(BUGNUMBER);
+printStatus (summary);
+
+var chars = '0123456789abcdef';
+var size = 10000;
+var mult = 1000;
+var densearray = [];
+var lsize = size;
+
+while (lsize--) 
+{ 
+  densearray.push(chars); 
+}
+
+function loop()
+{
+  var start = new Date();
+
+  for (var a = 0; a < mult; a++) 
+  {
+    var f = (function(x){}); 
+    for (var i = 0, len = densearray.length; i < len; i++) 
+    { 
+      f(densearray[i]); 
+    }
+  }
+
+  var stop = new Date();
+  return stop - start;
+}
+
+var timenonjit = loop();
+var timejit = loop();
+
+print('time: nonjit = ' + timenonjit + ', jit = ' + timejit);
+
+expect = true;
+actual = timejit < timenonjit/2;
+
+reportCompare(expect, actual, summary);