JSTests/microbenchmarks/int-or-other-add.js

var p = {f:true};

function foo(a, b) {
    var c;
    if (p.f)
        c = b;
    return a + c;
}

var result = 0;
for (var i = 0; i < 1000000; ++i)
    result += foo(i, i + 1);

if (result != 1000000000000)
    throw "Bad result: " + result;