45 lines
938 B
JavaScript
45 lines
938 B
JavaScript
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// Copyright 2023 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 __isPropertyOfType() {
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return typeof type === 'undefined' || typeof desc.value === type;
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}
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function __getProperties(obj) {
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let properties = [];
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for (let name of Object.getOwnPropertyNames(obj)) {
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if (__isPropertyOfType()) properties.name;
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}
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}
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function __getRandomProperty(obj) {
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let properties = __getProperties(obj);
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}
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var obj = {};
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Object.defineProperty(obj, "length", {});
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function foo(x) {
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try {
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for (let i = 0; i < x; ++i) {
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delete obj[__getRandomProperty(obj)]();
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}
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} catch (e) {}
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}
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function test() {
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let result = 0.9999;
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for (let i = 0; i < 50; ++i) {
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result += foo(i);
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}
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}
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%PrepareFunctionForOptimization(test);
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test();
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test();
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%OptimizeFunctionOnNextCall(test);
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test();
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