918fe04351
PR-URL: https://github.com/nodejs/node/pull/58070 Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com> Reviewed-By: Darshan Sen <raisinten@gmail.com> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com> Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>
26 lines
933 B
JavaScript
26 lines
933 B
JavaScript
// Copyright 2024 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 --turbolev --turbofan
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// Flags: --no-always-turbofan
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function check_undetectable(x) {
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let r = x == null;
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if (x == null) return 17;
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return r;
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};
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%PrepareFunctionForOptimization(check_undetectable);
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assertEquals(false, check_undetectable(42));
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%OptimizeFunctionOnNextCall(check_undetectable);
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assertEquals(false, check_undetectable(42));
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assertOptimized(check_undetectable);
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var undetectable = %GetUndetectable();
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// Should deoptimize because of invalidated NoUndetectableObjects protector.
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assertUnoptimized(check_undetectable);
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assertEquals(17, check_undetectable(undetectable));
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%OptimizeFunctionOnNextCall(check_undetectable);
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assertEquals(17, check_undetectable(%GetUndetectable()));
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assertOptimized(check_undetectable);
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