The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/js/src/jit-test/tests/ion/ArrayLengthGetPropertyIC.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,54 @@
     1.4 +function intLength (a, l) {
     1.5 +    var res = 0;
     1.6 +    for (var i = 0; i < l; i++)
     1.7 +        res += a.length;
     1.8 +    return res / l;
     1.9 +}
    1.10 +
    1.11 +function valueLength (a, l) {
    1.12 +    var res = 0;
    1.13 +    for (var i = 0; i < l; i++)
    1.14 +        res += a.length;
    1.15 +    return res / l;
    1.16 +}
    1.17 +
    1.18 +var denseArray = [0,1,2,3,4,5,6,7,8,9];
    1.19 +var typedArray = new Uint8Array(10);
    1.20 +var hugeArray  = new Array(4294967295);
    1.21 +var fakeArray1 = { length: 10 };
    1.22 +var fakeArray2 = { length: 10.5 };
    1.23 +
    1.24 +// Check the interpreter result and play with TI type objects.
    1.25 +assertEq(intLength(denseArray, 10), 10);
    1.26 +assertEq(intLength(typedArray, 10), 10);
    1.27 +// assertEq(intLength(fakeArray1, 10), 10);
    1.28 +
    1.29 +assertEq(valueLength(denseArray, 10), 10);
    1.30 +assertEq(valueLength(typedArray, 10), 10);
    1.31 +assertEq(valueLength(hugeArray , 10), 4294967295);
    1.32 +assertEq(valueLength(fakeArray2, 10), 10.5);
    1.33 +
    1.34 +// Heat up to compile (either JM / Ion)
    1.35 +assertEq(intLength(denseArray, 100), 10);
    1.36 +assertEq(valueLength(denseArray, 100), 10);
    1.37 +
    1.38 +// No bailout should occur during any of the following checks:
    1.39 +
    1.40 +// Check get-property length IC with dense array.
    1.41 +assertEq(intLength(denseArray, 1), 10);
    1.42 +assertEq(valueLength(denseArray, 1), 10);
    1.43 +
    1.44 +// Check get-property length IC with typed array.
    1.45 +assertEq(intLength(typedArray, 1), 10);
    1.46 +assertEq(valueLength(typedArray, 1), 10);
    1.47 +
    1.48 +// Check length which do not fit on non-double value.
    1.49 +assertEq(valueLength(hugeArray, 1), 4294967295);
    1.50 +
    1.51 +// Check object length property.
    1.52 +assertEq(intLength(fakeArray1, 1), 10);
    1.53 +assertEq(valueLength(fakeArray2, 1), 10.5);
    1.54 +
    1.55 +// Cause invalidation of intLength by returning a double.
    1.56 +assertEq(intLength(hugeArray, 1), 4294967295);
    1.57 +assertEq(intLength(fakeArray2, 1), 10.5);