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// 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('NaiveFilterReplacement', NaiveFilter, NaiveFilterSetup);
benchy('DoubleFilter', DoubleFilter, DoubleFilterSetup);
benchy('SmiFilter', SmiFilter, SmiFilterSetup);
benchy('FastFilter', FastFilter, FastFilterSetup);
benchy('ObjectFilter', GenericFilter, ObjectFilterSetup);
var array;
var func;
var this_arg;
var result;
var array_size = 100;
// Although these functions have the same code, they are separated for
// clean IC feedback.
function DoubleFilter() {
result = array.filter(func, this_arg);
}
function SmiFilter() {
result = array.filter(func, this_arg);
}
function FastFilter() {
result = array.filter(func, this_arg);
}
function GenericFilter() {
result = Array.prototype.filter.call(array, func, this_arg);
}
// From the lodash implementation.
function NaiveFilter() {
let index = -1
let resIndex = 0
const length = array == null ? 0 : array.length
const result = []
while (++index < length) {
const value = array[index]
if (func(value, index, array)) {
result[resIndex++] = value
}
}
return result
}
function NaiveFilterSetup() {
// Prime NaiveFilter with polymorphic cases.
array = [1, 2, 3];
func = ()=>true;
NaiveFilter();
NaiveFilter();
array = [3.4]; NaiveFilter();
array = new Array(10); array[0] = 'hello'; NaiveFilter();
SmiFilterSetup();
delete array[1];
}
function SmiFilterSetup() {
array = new Array();
for (var i = 0; i < array_size; i++) array[i] = i;
func = (value, index, object) => { return value % 2 === 0; };
}
function DoubleFilterSetup() {
array = new Array();
for (var i = 0; i < array_size; i++) array[i] = (i + 0.5);
func = (value, index, object) => { return Math.floor(value) % 2 === 0; };
}
function FastFilterSetup() {
array = new Array();
for (var i = 0; i < array_size; i++) array[i] = 'value ' + i;
func = (value, index, object) => { return index % 2 === 0; };
}
function ObjectFilterSetup() {
array = { length: array_size };
for (var i = 0; i < array_size; i++) {
array[i] = i;
}
func = (value, index, object) => { return index % 2 === 0; };
}
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