loop structure.js

/*
  this test shows independence loop structure of performance
  internal asm code become same
*/

var m = 1000
  , aL = new Array(m)
;

aL[aL.length - 1] = 1;  

_speedTest(
  [
    function(n)
    {
      var a = aL, len = a.length;
      var i = n; while(i--)
      {
        var j = -1; while(++j < len)
        {  
          if(a[j] === 1)
            break;
        }    
      }
    },
    function(n)
    {
      var a = aL, len = a.length;
      var i = n; while(i--)
      {
        var j = -1; while(++j < len && a[j] !== 1)
          ;
      }
    }
  ],
  1000
);

/*
opera 10.62
0: 258 ms
1: 263 ms

chrome7
0: 344 ms
1: 355 ms

ie7
0: 1342 ms
1: 1372 ms

ff3.6
0: 354 ms
1: 362 ms

ff4b3
0: 536 ms
1: 542 ms
*/