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>
29 lines
920 B
JavaScript
29 lines
920 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 ret_from_holey_arr(i) {
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let arr = new Array(10);
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arr[0] = 42;
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return arr[i];
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}
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%PrepareFunctionForOptimization(ret_from_holey_arr);
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assertEquals(42, ret_from_holey_arr(0));
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%OptimizeFunctionOnNextCall(ret_from_holey_arr);
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assertEquals(42, ret_from_holey_arr(0));
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assertOptimized(ret_from_holey_arr);
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// Triggering deopt by trying to return a hole.
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assertEquals(undefined, ret_from_holey_arr(1));
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assertUnoptimized(ret_from_holey_arr);
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// Reopting
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%OptimizeFunctionOnNextCall(ret_from_holey_arr);
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assertEquals(undefined, ret_from_holey_arr(1));
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// This time the hole is converted to undefined without deopting.
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assertOptimized(ret_from_holey_arr);
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