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Kmake/deps/v8/test/mjsunit/turboshaft/maglev-frontend/regress-406054652.js
2026-05-26 23:36:42 -07:00

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JavaScript

// Copyright 2025 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.
//
// Flags: --allow-natives-syntax --turbolev --turbofan
let values = [];
function reset() {
values = [];
}
function mapper(value, ix, thisArg) {
values.push(value);
thisArg.length = 2;
}
%PrepareFunctionForOptimization(mapper);
function testForEach() {
reset();
[1, 2, 3].forEach(mapper);
assertEquals([1, 2], values);
}
%PrepareFunctionForOptimization(testForEach);
testForEach();
%OptimizeFunctionOnNextCall(testForEach);
testForEach();
function testMap() {
reset();
[1, 2, 3].map(mapper);
assertEquals([1, 2], values);
}
%PrepareFunctionForOptimization(testMap);
testMap();
%OptimizeFunctionOnNextCall(testMap);
testMap();