24 lines
575 B
JavaScript
24 lines
575 B
JavaScript
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// 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 bar(a) {
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return Object.defineProperty(a, 'x', {get() { return 1; }});
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}
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function foo() {
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return {};
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}
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%NeverOptimizeFunction(bar);
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%PrepareFunctionForOptimization(foo);
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const o = foo(); // Keep a reference so the GC doesn't kill the map.
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bar(o);
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const a = bar(foo());
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%OptimizeFunctionOnNextCall(foo);
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const b = bar(foo());
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assertTrue(%HaveSameMap(a, b));
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