b7726c447a
It was shipped in V8 4.4. Review URL: https://codereview.chromium.org/1273543002 Cr-Commit-Position: refs/heads/master@{#30038}
31 lines
721 B
JavaScript
31 lines
721 B
JavaScript
// Copyright 2014 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 TestProtoDeopt() {
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var proto = {};
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function deoptMe() {
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%DeoptimizeFunction(f);
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return proto;
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}
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function checkObject(name, value, o) {
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assertSame(proto, Object.getPrototypeOf(o));
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assertTrue(o.hasOwnProperty(name));
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assertEquals(value, o[name]);
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}
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function f(name, value) {
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return { [name]: value, __proto__: deoptMe() };
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}
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checkObject("a", 1, f("a", 1));
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checkObject("b", 2, f("b", 2));
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%OptimizeFunctionOnNextCall(f);
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checkObject("c", 3, f("c", 3));
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})();
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