// 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. (() => { // Make sure we inline the callback, pick up all possible TurboFan // optimizations. function RunOptFastReduce(value) { // Use of variable {value} in the callback function forces // context creation without escape analysis. // // Also, the arrow function requires inlining based on // SharedFunctionInfo. result = array.reduce((p, v, i, a) => p + value); } // Don't optimize because I want to optimize RunOptFastMap with a parameter // to be used in the callback. %NeverOptimizeFunction(OptFastReduce); function OptFastReduce() { RunOptFastReduce("3"); } function side_effect(a) { return a; } %NeverOptimizeFunction(side_effect); function OptUnreliableReduce() { result = array.reduce(func, side_effect(array)); } DefineHigherOrderTests([ // name, test function, setup function, user callback ['DoubleReduce', newClosure('reduce'), DoubleSetup, (p, v, i, o) => p + v], ['SmiReduce', newClosure('reduce'), SmiSetup, (p, v, i, a) => p + 1], ['FastReduce', newClosure('reduce'), FastSetup, (p, v, i, a) => p + v], ['OptFastReduce', OptFastReduce, FastSetup, undefined], [ 'OptUnreliableReduce', OptUnreliableReduce, FastSetup, (p, v, i, a) => p = v ] ]); })();