The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/js/src/tests/js1_8_1/jit/regress-469927.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,47 @@
     1.4 +// |reftest| skip -- bogus perf test (bug 540512)
     1.5 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
     1.6 +/* This Source Code Form is subject to the terms of the Mozilla Public
     1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this
     1.8 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
     1.9 +
    1.10 +//-----------------------------------------------------------------------------
    1.11 +var BUGNUMBER = 469927;
    1.12 +var summary = 'TM: jit should not slow down short loop with let';
    1.13 +var actual = '';
    1.14 +var expect = '';
    1.15 +
    1.16 +
    1.17 +//-----------------------------------------------------------------------------
    1.18 +test();
    1.19 +//-----------------------------------------------------------------------------
    1.20 +
    1.21 +function test()
    1.22 +{
    1.23 +  enterFunc ('test');
    1.24 +  printBugNumber(BUGNUMBER);
    1.25 +  printStatus (summary);
    1.26 + 
    1.27 +  function letitbe() {
    1.28 +    var start = new Date();
    1.29 +    for (let i = 0; i < 500000; ++i) { 
    1.30 +      for (let j = 0; j < 4; ++j) { } 
    1.31 +    }
    1.32 +    var stop = new Date();
    1.33 +    return stop - start;
    1.34 +  }
    1.35 +
    1.36 +  jit(false);
    1.37 +  var timenonjit = letitbe();
    1.38 +  jit(true);
    1.39 +  var timejit = letitbe();
    1.40 +  jit(false);
    1.41 +
    1.42 +  print('time: nonjit = ' + timenonjit + ', jit = ' + timejit);
    1.43 +
    1.44 +  expect = true;
    1.45 +  actual = timejit < timenonjit;
    1.46 +
    1.47 +  reportCompare(expect, actual, summary);
    1.48 +
    1.49 +  exitFunc ('test');
    1.50 +}