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a7cbf19a82
PR-URL: https://github.com/nodejs/node/pull/38273 Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com> Reviewed-By: Michael Dawson <midawson@redhat.com> Reviewed-By: Mary Marchini <oss@mmarchini.me>
78 lines
2.5 KiB
JavaScript
78 lines
2.5 KiB
JavaScript
// Copyright 2018 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 --opt --no-lazy-feedback-allocation
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var global;
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function TestSetWithCustomIterator(ctor) {
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const k1 = {};
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const k2 = {};
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const entries = [k1];
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let callCount = 0;
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entries[Symbol.iterator] = () => ({
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next: () =>
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callCount++ === 0
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? { value: k2, done: false }
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: { done: true }
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});
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const set = new ctor(entries);
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assertFalse(set.has(k1));
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assertTrue(set.has(k2));
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assertEquals(2, callCount);
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// Keep entries alive to avoid collection of the weakly held map in optimized
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// code which causes the code to deopt.
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global = entries;
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}
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%PrepareFunctionForOptimization(TestSetWithCustomIterator);
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TestSetWithCustomIterator(Set);
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TestSetWithCustomIterator(Set);
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TestSetWithCustomIterator(Set);
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%OptimizeFunctionOnNextCall(TestSetWithCustomIterator);
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TestSetWithCustomIterator(Set);
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assertOptimized(TestSetWithCustomIterator);
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TestSetWithCustomIterator(WeakSet);
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%PrepareFunctionForOptimization(TestSetWithCustomIterator);
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TestSetWithCustomIterator(WeakSet);
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TestSetWithCustomIterator(WeakSet);
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%OptimizeFunctionOnNextCall(TestSetWithCustomIterator);
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TestSetWithCustomIterator(WeakSet);
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assertOptimized(TestSetWithCustomIterator);
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function TestMapWithCustomIterator(ctor) {
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const k1 = {};
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const k2 = {};
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const entries = [[k1, 1]];
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let callCount = 0;
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entries[Symbol.iterator] = () => ({
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next: () =>
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callCount++ === 0
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? { value: [k2, 2], done: false }
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: { done: true }
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});
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const map = new ctor(entries);
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assertFalse(map.has(k1));
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assertEquals(2, map.get(k2));
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assertEquals(2, callCount);
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// Keep entries alive to avoid collection of the weakly held map in optimized
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// code which causes the code to deopt.
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global = entries;
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}
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%PrepareFunctionForOptimization(TestMapWithCustomIterator);
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TestMapWithCustomIterator(Map);
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TestMapWithCustomIterator(Map);
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TestMapWithCustomIterator(Map);
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%OptimizeFunctionOnNextCall(TestMapWithCustomIterator);
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TestMapWithCustomIterator(Map);
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assertOptimized(TestMapWithCustomIterator);
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TestMapWithCustomIterator(WeakMap);
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%PrepareFunctionForOptimization(TestMapWithCustomIterator);
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TestMapWithCustomIterator(WeakMap);
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TestMapWithCustomIterator(WeakMap);
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%OptimizeFunctionOnNextCall(TestMapWithCustomIterator);
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TestMapWithCustomIterator(WeakMap);
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assertOptimized(TestMapWithCustomIterator);
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