(function benchmark() {

    var testObject = {
        prop1: 4,
        prop2: 4,
        prop3: 4,
        prop4: 4,
        prop5: 4,
        prop6: 4,
        prop7: 4,
        prop8: 4,
        prop9: 4,
        prop10: 4,
        prop11: 4,
        prop12: 4,
        prop13: 4,
        prop14: 4,
        prop15: 4,
        prop16: 4,
        prop17: 4,
        prop18: 4,
        prop19: 4,
        prop20: 4,
        prop21: 4,
        prop22: 4,
        prop23: 4,
        prop24: 4,
        prop25: 4,
        prop26: 4,
        prop27: 4,
        prop28: 4,
        prop29: 4,
        prop: 3
    }

        function monomorphic(a) {
            return a.prop + a.prop;
        }

        function megamorphic(a) {
            return a.prop + a.prop;
        }

    var objs = [{
            prop: 3
        }, {
            prop3: 4,
            prop: 3,
            prop2: 4
        }, {
            prop4: 4,
            prop2: 4,
            prop: 3,
            prop5: 6
        },
        testObject, {
            prop7: 15,
            prop30: 12,
            prop314: 4,
            prop34: 15,
            prop: 3
        }
    ];
    var l = 100000000;
    while (l--) {
        var index = Math.random() * objs.length | 0;
        megamorphic(objs[index]);
    }

    var l = 100000000;

    while (l--) {
        monomorphic(testObject);
    }

    var now = Date.now(),
        l = 10000000;

    while (l--) {
        if (megamorphic(testObject) !== 6) {
            die();
        }
    }

    print("Megamorphic", Date.now() - now);

    var now = Date.now(),
        l = 10000000;

    while (l--) {
        if (monomorphic(testObject) !== 6) {
            die();
        }
    }

    print("Monomorphic", Date.now() - now);

})();