v8/test/js-perf-test/Array/join.js
Benedikt Meurer 3fba4b7089 [js-perf-test] Add microbenchmarks for Array.prototype.join/toString.
Bug: v8:1956
Change-Id: Ic4c67392af2337ac35f9473073dae01264c5ac00
Reviewed-on: https://chromium-review.googlesource.com/590428
Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46957}
2017-07-28 05:11:38 +00:00

53 lines
1.3 KiB
JavaScript

// Copyright 2017 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
function benchy(name, test, testSetup) {
new BenchmarkSuite(name, [1000],
[
new Benchmark(name, false, false, 0, test, testSetup, ()=>{})
]);
}
benchy('SmiJoin', SmiJoin, SmiJoinSetup);
benchy('SmiJoin', SmiJoin, SmiJoinSetup);
benchy('SparseSmiJoin', SparseSmiJoin, SparseSmiJoinSetup);
benchy('SparseStringJoin', SparseStringJoin, SparseStringJoinSetup);
var array;
var result;
var array_size = 1000;
// Although these functions have the same code, they are separated for
// clean IC feedback.
function SmiJoin() {
result = array.join();
}
function StringJoin() {
result = array.join();
}
function SparseSmiJoin() {
result = array.join();
}
function SparseStringJoin() {
result = array.join();
}
function SmiJoinSetup() {
array = new Array();
for (var i = 0; i < array_size; ++i) array[i] = i;
}
function StringJoinSetup() {
array = new Array();
for (var i = 0; i < array_size; ++i) array[i] = `Item no. ${i}`;
}
function SparseSmiJoinSetup() {
SmiJoinSetup();
array.length = array.length * 2;
}
function SparseStringJoinSetup() {
StringJoinSetup();
array.length = array.length * 2;
}