ChakraCore/test/Optimizer/copyprop.js

//-------------------------------------------------------------------------------------------------------
// Copyright (C) Microsoft. All rights reserved.
// Licensed under the MIT license. See LICENSE.txt file in the project root for full license information.
//-------------------------------------------------------------------------------------------------------


function TestCacheAtWrite(expvalue)
{
    var temp = expvalue;
    var startvalue = expvalue;
    for(var k=0;k<3;k++)
    {
        if(k>=2)
        {
            //donot update the cache the next two times 
            startvalue = temp;
            WScript.Echo("startvalue: "+startvalue);
        }
        else
        {
        //Keep updating the cache for the first two times 
            expvalue = startvalue;
        }
        startvalue++;
    }
}

TestCacheAtWrite(0); 

// Test a loop nest with a cycle of assignments.
function testcycle(){
  var obj0 = {};
  var obj1 = {};
  var ary = new Array(10);
  var ui16 = new Uint16Array(256);
  var c = 1;
  obj1.length >>>=1;
  var __loopvar4 = 0;
  while(((obj1.prop0 &= (c %= 1))) && __loopvar4 < 3) {
    __loopvar4++;
  }
  for(var __loopvar1 = 0; __loopvar1 < 3; __loopvar1++) {
    b =c;
    var __loopvar2 = 0;
    for(var strvar0 in ui16 ) {
      if(__loopvar2++ > 3) break;
      d =b;
      ary[(15)] = (b-- );
      obj0.prop0 =(obj1.length++ );
      c =d;
    }
  }
  WScript.Echo("d = " + (d|0));
};

testcycle();

function testcycle2(){
  var obj0 = {};
  var obj1 = {};
  var func0 = function(p0){
    obj0.prop0;
  }
  obj1.method0 = func0;
  var obj3 = obj0;
  var i = 0;
  while(i < 3) {
    i++;
    obj0 = obj3;
    obj3 = obj1;
  }
  obj0.method0()
};

// generate profile
testcycle2();

// run JITted code
testcycle2();