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/range-analysis.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,35 @@
     1.4 +// |jit-test|
     1.5 +
     1.6 +// Only fails with Ion.
     1.7 +function add_xors_1() {
     1.8 +    var res = 0;
     1.9 +    var step = 4;
    1.10 +    for (var i = 0x7fffffff | 0; i >= (1 << step); i -= (i >> step)) {
    1.11 +        var x = i ^ (i << 1);
    1.12 +        res += (((x + x) + res + res) | 0);
    1.13 +    }
    1.14 +    return res;
    1.15 +}
    1.16 +
    1.17 +var r1 = add_xors_1();
    1.18 +for (var i = 0; i < 100; i++) {
    1.19 +    var r2 = add_xors_1();
    1.20 +    assertEq(r2, r1);
    1.21 +}
    1.22 +
    1.23 +// Only fails with JM
    1.24 +function add_xors_2() {
    1.25 +    var res = 0;
    1.26 +    var step = 4;
    1.27 +    for (var i = 0x7fffffff | 0; i >= (1 << step); i -= (i >> step)) {
    1.28 +        var x = i ^ (i << 1);
    1.29 +        res += ((x + x) + res + res) | 0;
    1.30 +    }
    1.31 +    return res;
    1.32 +}
    1.33 +
    1.34 +var r1 = add_xors_2();
    1.35 +for (var i = 0; i < 100; i++) {
    1.36 +    var r2 = add_xors_2();
    1.37 +    assertEq(r1, r2);
    1.38 +}