test/Optimizer/Overflow_MaxInterpret.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 test0(a, b) {
    a += 0x7fffffff;
    return a & b;
}
echo("test0: " + test0(1, 1));
echo("test0: " + test0(1, 1.1));

function test0slot(a, b) {
    return a + 0x7fffffff & b | a;

    function test0slota() { a; }
}
echo("test0slot: " + test0slot(1, 1));
echo("test0slot: " + test0slot(1, 1.1));

function test1(a, b) {
    a += 0x7fffffff;
    var c = b & 0;
    a += b;
    return a & 0x7fffffff | c;
}
echo("test1: " + test1(1, 1));
echo("test1: " + test1(1, 1.1));

function test1slot(a, b) {
    var c = b & 0;
    return a + 0x7fffffff + c & 0x7fffffff | a | c;

    function test1slota() { a; }
}
echo("test1slot: " + test1slot(1, 1));
echo("test1slot: " + test1slot(1, 1.1));

function test2(a, b) {
    a += 0x7fffffff;
    a += b;
    return a & 0x7fffffff;
}
echo("test2: " + test2(1, 1));
echo("test2: " + test2(1, 1.1));

function test2slot(a, b) {
    return a + 0x7fffffff + b & 0x7fffffff | a;

    function test2slota() { a; }
}
echo("test2slot: " + test2slot(1, 1));
echo("test2slot: " + test2slot(1, 1.1));

function test3(a) {
    a += 0x7fffffff;
    a += 1.1;
    return a & 0x7fffffff;
}
echo("test3: " + test3(1));
echo("test3: " + test3(1));

function test3slot(a) {
    return a + 0x7fffffff + 1.1 & 0x7fffffff | a;

    function test3slota() { a; }
}
echo("test3slot: " + test3slot(1));
echo("test3slot: " + test3slot(1));

function test4() {
    return ~-0;
}
echo("test4: " + test4());
echo("test4: " + test4());

function test5() {
    var i = 0;
    var g = 1;
    test5a();
    g = 2.2;
    return test5a();

    function test5a() {
        return g < (g & -i) ? 0 : 1;
    }
};
echo("test5: " + test5());
for(var i = 0; i < 100; ++i)
    test5();
echo("test5: " + test5());

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

function echo() {
    var doEcho;
    if(this.WScript)
        doEcho = function (s) { this.WScript.Echo(s); };
    else if(this.document)
        doEcho = function (s) {
            var div = this.document.createElement("div");
            div.innerText = s;
            this.document.body.appendChild(div);
        };
    else
        doEcho = function (s) { this.print(s); };
    echo = function () {
        var s = "";
        for(var i = 0; i < arguments.length; ++i)
            s += arguments[i];
        doEcho(s);
    };
    echo.apply(this, arguments);
}