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PR-URL: https://github.com/nodejs/node/pull/28918 Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Rich Trott <rtrott@gmail.com>
35 lines
684 B
JavaScript
35 lines
684 B
JavaScript
// Copyright 2019 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --allow-natives-syntax
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function use(x) { return x; }
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%NeverOptimizeFunction(use);
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function foo() {
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let result = undefined;
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(function () {
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const a = {};
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for (_ of [0]) {
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const empty = [];
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(function () {
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result = 42;
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for (_ of [0]) {
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for (_ of [0]) {
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use(empty);
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}
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}
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result = a;
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})();
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}
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})();
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return result;
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}
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%PrepareFunctionForOptimization(foo);
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foo();
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foo();
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%OptimizeFunctionOnNextCall(foo);
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foo();
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