// Copyright 2024 the V8 project authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. // // Flags: --allow-natives-syntax --maglev --no-use-ic // Flags: --maglev-escape-analysis function foo() { // --no-use-ic guarantees a soft deopt here, so the allocation goes // to deopt-info. return [NaN,, NaN]; } %PrepareFunctionForOptimization(foo); foo(); %OptimizeMaglevOnNextCall(foo); // When accessing the hole, we get an undefined. assertEquals(foo()[1], undefined); // We deopt. assertFalse(isOptimized(foo));