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>
39 lines
1.0 KiB
JavaScript
39 lines
1.0 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-turboshaft-loop-unrolling --expose-gc --enable-inspector
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var Debug = debug.Debug;
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Debug.setListener(function (event, exec_state, event_data, data) {
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if (event == Debug.DebugEvent.Break) {
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gc();
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}
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});
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function foo(b) {
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%ScheduleBreak();
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// Allocating a first object.
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let o1 = { x : 42 };
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// Inserting a loop, in order to get a JSStackCheck.
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let v = 0;
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for (; v < 42; v = (v + 2) * 2) {}
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// Allocating a second object. This should not get allocation-folded with the
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// first allocation, because of the JSStackCheck's GC in the middle.
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let o2 = { x : o1, y : v };
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return o2;
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}
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%PrepareFunctionForOptimization(foo);
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assertEquals({ x : { x : 42 }, y : 60 }, foo());
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assertEquals({ x : { x : 42 }, y : 60 }, foo());
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%OptimizeFunctionOnNextCall(foo);
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assertEquals({ x : { x : 42 }, y : 60 }, foo());
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