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>
41 lines
1.1 KiB
JavaScript
41 lines
1.1 KiB
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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let arr = [1, 2, 3, 4, 5, 6];
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// Make this slot mutable by assigning it twice. This ensures we are not adding
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// a context slot dependency, which will also deoptimize the array_foreach.
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// This is not what we want to test here.
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let trigger = {};
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trigger = false;
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function maybe_deopt(v) {
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if (v == 3 && trigger) {
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// The first time this is executed, it will change the map of {arr}, which
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// will trigger a deopt of {array_foreach}.
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arr.x = 11;
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}
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return v;
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}
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function array_foreach(arr) {
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let s = 0;
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arr.forEach((v) => s += maybe_deopt(v));
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return s;
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}
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%PrepareFunctionForOptimization(array_foreach);
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assertEquals(21, array_foreach(arr));
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%OptimizeFunctionOnNextCall(array_foreach);
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assertEquals(21, array_foreach(arr));
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assertOptimized(array_foreach);
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trigger = true;
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assertEquals(21, array_foreach(arr));
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assertUnoptimized(array_foreach);
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