ASM Module performance test

gistfile1.js

//http://ejohn.org/blog/asmjs-javascript-compile-target/

function DiagModule(stdlib, foreign, heap) {
    //"use asm";

    // Variable Declarations
    var sqrt = stdlib.Math.sqrt;

    // Function Declarations
    function square(x) {
        x = +x;
        return +(x*x);
    }

    function diag(x, y) {
        x = +x;
        y = +y;
        return +sqrt(square(x) + square(y));
    }

    return { diag: diag };
}


function DiagModuleWithASM(stdlib, foreign, heap) {
    "use asm";

    // Variable Declarations
    var sqrt = stdlib.Math.sqrt;

    // Function Declarations
    function square(x) {
        x = +x;
        return +(x*x);
    }

    function diag(x, y) {
        x = +x;
        y = +y;
        return +sqrt(square(x) + square(y));
    }

    return { diag: diag };
}

var start1 = new Date();
for(var i = 0 ; i < 1000000; i++) {
   DiagModule(window).diag(3,4);
}
var end1 = new Date();


var start2 = new Date();
for(var i = 0 ; i < 1000000; i++) {
   DiagModuleWithASM(window).diag(3,4);
}
var end2 = new Date();

console.log("no ASM->" , end1.getTime() - start1.getTime());
console.log("ASM ->" , end2.getTime() - start2.getTime());