js/src/jit-test/tests/ion/ArrayLengthGetPropertyIC.js

Wed, 31 Dec 2014 06:09:35 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Wed, 31 Dec 2014 06:09:35 +0100
changeset 0
6474c204b198
permissions
-rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 function intLength (a, l) {
     2     var res = 0;
     3     for (var i = 0; i < l; i++)
     4         res += a.length;
     5     return res / l;
     6 }
     8 function valueLength (a, l) {
     9     var res = 0;
    10     for (var i = 0; i < l; i++)
    11         res += a.length;
    12     return res / l;
    13 }
    15 var denseArray = [0,1,2,3,4,5,6,7,8,9];
    16 var typedArray = new Uint8Array(10);
    17 var hugeArray  = new Array(4294967295);
    18 var fakeArray1 = { length: 10 };
    19 var fakeArray2 = { length: 10.5 };
    21 // Check the interpreter result and play with TI type objects.
    22 assertEq(intLength(denseArray, 10), 10);
    23 assertEq(intLength(typedArray, 10), 10);
    24 // assertEq(intLength(fakeArray1, 10), 10);
    26 assertEq(valueLength(denseArray, 10), 10);
    27 assertEq(valueLength(typedArray, 10), 10);
    28 assertEq(valueLength(hugeArray , 10), 4294967295);
    29 assertEq(valueLength(fakeArray2, 10), 10.5);
    31 // Heat up to compile (either JM / Ion)
    32 assertEq(intLength(denseArray, 100), 10);
    33 assertEq(valueLength(denseArray, 100), 10);
    35 // No bailout should occur during any of the following checks:
    37 // Check get-property length IC with dense array.
    38 assertEq(intLength(denseArray, 1), 10);
    39 assertEq(valueLength(denseArray, 1), 10);
    41 // Check get-property length IC with typed array.
    42 assertEq(intLength(typedArray, 1), 10);
    43 assertEq(valueLength(typedArray, 1), 10);
    45 // Check length which do not fit on non-double value.
    46 assertEq(valueLength(hugeArray, 1), 4294967295);
    48 // Check object length property.
    49 assertEq(intLength(fakeArray1, 1), 10);
    50 assertEq(valueLength(fakeArray2, 1), 10.5);
    52 // Cause invalidation of intLength by returning a double.
    53 assertEq(intLength(hugeArray, 1), 4294967295);
    54 assertEq(intLength(fakeArray2, 1), 10.5);

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