5b794a389b
Bug: v8:8801, v8:8394 Change-Id: I6bb46ecafe1bd94adbf0409f13c9b2e558da0823 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1594558 Commit-Queue: Ross McIlroy <rmcilroy@chromium.org> Commit-Queue: Mythri Alle <mythria@chromium.org> Auto-Submit: Ross McIlroy <rmcilroy@chromium.org> Reviewed-by: Mythri Alle <mythria@chromium.org> Cr-Commit-Position: refs/heads/master@{#61200}
19 lines
575 B
JavaScript
19 lines
575 B
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
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// Check that we do appropriate used/unused field accounting
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var p = Promise.resolve();
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var then = p.then = () => {};
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function spread() { return { ...p }; }
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%PrepareFunctionForOptimization(spread);
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assertEquals({ then }, spread());
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assertEquals({ then }, spread());
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assertEquals({ then }, spread());
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%OptimizeFunctionOnNextCall(spread);
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assertEquals({ then }, spread());
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