edd537ca2f
PR-URL: https://github.com/nodejs/node/pull/45230 Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
25 lines
533 B
JavaScript
25 lines
533 B
JavaScript
// Copyright 2022 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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//
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// Flags: --allow-natives-syntax
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function Thingy() {}
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Thingy.prototype = {
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foo: function() { return 42; }
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};
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const x = new Thingy();
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function f(o) {
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return o.foo();
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}
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%PrepareFunctionForOptimization(f);
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assertEquals(42, f(x));
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%OptimizeMaglevOnNextCall(f);
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assertEquals(42, f(x));
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Thingy.prototype.foo = function() { return 56; }
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assertEquals(56, f(x));
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