36 lines
678 B
JavaScript
36 lines
678 B
JavaScript
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// 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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// Flags: --allow-natives-syntax --maglev --no-stress-opt
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class A {
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foo() {
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return 42;
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}
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};
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class B extends A {
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bar() {
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return super.foo();
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}
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};
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class C {
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foo() {
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return 24;
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}
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};
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var o = new B();
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%PrepareFunctionForOptimization(o.bar);
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assertEquals(o.bar(), 42);
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%OptimizeMaglevOnNextCall(o.bar);
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assertEquals(o.bar(), 42);
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assertTrue(isMaglevved(o.bar));
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// This should deopt.
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o.__proto__.__proto__ = new C();
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assertEquals(o.bar(), 24);
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assertFalse(isMaglevved(o.bar));
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