// Copyright 2018 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. // Comparing different iterating schemes against spread initial literals. // Benchmarks for small smi sets. var keys = Array.from(Array(50).keys()); var set = new Set(keys); // ---------------------------------------------------------------------------- // Benchmark: Spread // ---------------------------------------------------------------------------- function Spread() { var newArr = [...set]; // basic sanity check if (newArr.length != set.size) throw 666; return newArr; } // ---------------------------------------------------------------------------- // Benchmark: SpreadKeys // ---------------------------------------------------------------------------- function SpreadKeys() { var newArr = [...set.keys()]; // basic sanity check if (newArr.length != set.size) throw 666; return newArr; } // ---------------------------------------------------------------------------- // Benchmark: SpreadValues // ---------------------------------------------------------------------------- function SpreadValues() { var newArr = [...set.values()]; // basic sanity check if (newArr.length != set.size) throw 666; return newArr; } // ---------------------------------------------------------------------------- // Benchmark: ForOf // ---------------------------------------------------------------------------- function ForOf() { var newArr = new Array(set.size); var i = 0; for (let x of set) { newArr[i] = x; i++; } if (newArr.length != set.size) throw 666; return newArr; } // ---------------------------------------------------------------------------- // Benchmark: ForOfKeys // ---------------------------------------------------------------------------- function ForOfKeys() { var newArr = new Array(set.size); var i = 0; for (let x of set.keys()) { newArr[i] = x; i++; } if (newArr.length != set.size) throw 666; return newArr; } // ---------------------------------------------------------------------------- // Benchmark: ForOfValues // ---------------------------------------------------------------------------- function ForOfValues() { var newArr = new Array(set.size); var i = 0; for (let x of set.values()) { newArr[i] = x; i++; } if (newArr.length != set.size) throw 666; return newArr; } // ---------------------------------------------------------------------------- // Setup and Run // ---------------------------------------------------------------------------- d8.file.execute('../base.js'); var success = true; function PrintResult(name, result) { print(name + '-ArrayLiteralInitialSpreadSmallSmiSet(Score): ' + result); } function PrintError(name, error) { PrintResult('Error: ' + name, error); success = false; } function CreateBenchmark(name, f) { new BenchmarkSuite(name, [1000], [ new Benchmark(name, false, false, 0, f) ]); } CreateBenchmark('ForOf', ForOf); CreateBenchmark('ForOfKeys', ForOfKeys); CreateBenchmark('ForOfValues', ForOfValues); CreateBenchmark('Spread', Spread); CreateBenchmark('SpreadKeys', SpreadKeys); CreateBenchmark('SpreadValues', SpreadValues); BenchmarkSuite.config.doWarmup = true; BenchmarkSuite.config.doDeterministic = false; BenchmarkSuite.RunSuites({NotifyResult: PrintResult, NotifyError: PrintError});