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17a74ddd3d
PR-URL: https://github.com/nodejs/node/pull/49639 Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com> Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
32 lines
1012 B
JavaScript
32 lines
1012 B
JavaScript
// Copyright 2023 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: --no-turbo-escape --no-turbo-allocation-folding
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function f() {
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// Allocating an array that will be initialized with holes.
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let arr = new Array(5);
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// Doing a bunch more allocations in the hope of triggering a GC.
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[arr, 5, 6, 7, [8], [9]];
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[2, 5, 6, 7, [8], [9]];
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[2, 5, 6, 7, [8], [9]];
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[2, 5, 6, 7, [8], [9]];
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[2, 5, 6, 7, [8], [9]];
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[2, 5, 6, 7, [8], [9]];
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[2, 5, 6, 7, [8], [9]];
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[2, 5, 6, 7, [8], [9]];
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[2, 5, 6, 7, [8], [9]];
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// Setting arr[3]. Because previous allocations could trigger GCs, store-store
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// elimination should not remove the initial hole-initialization of arr[3],
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// otherwise the GC could see an undefined field.
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arr[3] = 42;
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return arr;
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}
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// Running `f` a few times, in the hope that a GC will eventually be scheduled
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// inside it.
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for (let i = 0; i < 5000; i++) {
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f();
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}
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