cfbf9e0d14
PR-URL: https://github.com/nodejs/node/pull/52465 Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com> Reviewed-By: Michael Dawson <midawson@redhat.com>
22 lines
598 B
JavaScript
22 lines
598 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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//
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// Flags: --allow-natives-syntax --maglev --no-use-ic
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// Flags: --maglev-escape-analysis
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function foo() {
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// --no-use-ic guarantees a soft deopt here, so the allocation goes
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// to deopt-info.
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return [NaN,, NaN];
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}
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%PrepareFunctionForOptimization(foo);
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foo();
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%OptimizeMaglevOnNextCall(foo);
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// When accessing the hole, we get an undefined.
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assertEquals(foo()[1], undefined);
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// We deopt.
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assertFalse(isOptimized(foo));
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