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@milahu
Created Oct 5, 2020
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unswitch for loop (http://jsbench.github.io/#65b03a6ddd3157f98e5a444dbce62874) #jsbench #jsperf
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<title>unswitch for loop</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/benchmark/1.0.0/benchmark.min.js"></script>
<script src="./suite.js"></script>
</head>
<body>
<h1>Open the console to view the results</h1>
<h2><code>cmd + alt + j</code> or <code>ctrl + alt + j</code></h2>
</body>
</html>
"use strict";
(function (factory) {
if (typeof Benchmark !== "undefined") {
factory(Benchmark);
} else {
factory(require("benchmark"));
}
})(function (Benchmark) {
var suite = new Benchmark.Suite;
Benchmark.prototype.setup = function () {
const input_list = Array.from({length: 10000})
.map(_ => Array.from({length: (Math.random()*10)|0}).map((_, idx) => idx*10))
};
suite.add("unswitch yes", function () {
// unswitch yes
let c = 0;
const cond = (Math.random()*3)|0;
if (cond == 3) {
for (let i = 0; i < input_list.length; i++) {
c += 1;
c += 2;
c += 3;
}
}
else
if (cond == 2) {
for (let i = 0; i < input_list.length; i++) {
c += 1;
c += 2;
}
}
else
if (cond == 1) {
for (let i = 0; i < input_list.length; i++) {
c += 1;
}
}
});
suite.add("unswitch no", function () {
// unswitch no
let c = 0;
const cond = (Math.random()*3)|0;
for (let i = 0; i < input_list.length; i++) {
if (cond == 3) {
c += 1;
c += 2;
c += 3;
}
else
if (cond == 2) {
c += 1;
c += 2;
}
else
if (cond == 1) {
c += 1;
}
}
});
suite.add("unswitch via function", function () {
// unswitch via function
// unswitch no
let c = 0;
const cond = (Math.random()*3)|0;
function f(cond){
if (cond == 3) {
c += 1;
c += 2;
c += 3;
}
else
if (cond == 2) {
c += 1;
c += 2;
}
else
if (cond == 1) {
c += 1;
}
}
for (let i = 0; i < input_list.length; i++) {
f(cond);
}
});
suite.on("cycle", function (evt) {
console.log(" - " + evt.target);
});
suite.on("complete", function (evt) {
console.log(new Array(30).join("-"));
var results = evt.currentTarget.sort(function (a, b) {
return b.hz - a.hz;
});
results.forEach(function (item) {
console.log((idx + 1) + ". " + item);
});
});
console.log("unswitch for loop");
console.log(new Array(30).join("-"));
suite.run();
});
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