c6a16c10dd
With bytecode flushing and lazy feedback allocation, we need to call %PrepareForOptimization before we call %OptimizeFunctionOnNextCall, ideally after declaring the function. Bug: v8:8801, v8:8394, v8:9183 Change-Id: I3fb257282a30f6526a376a3afdedb44786320d34 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1648255 Commit-Queue: Mathias Bynens <mathias@chromium.org> Reviewed-by: Maya Lekova <mslekova@chromium.org> Reviewed-by: Mythri Alle <mythria@chromium.org> Cr-Commit-Position: refs/heads/master@{#62119}
17 lines
487 B
JavaScript
17 lines
487 B
JavaScript
// Copyright 2019 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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function foo() {
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const r = {e: NaN, g: undefined, c: undefined};
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const u = {__proto__: {}, e: new Set(), g: 0, c: undefined};
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return r;
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};
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%PrepareFunctionForOptimization(foo);
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foo();
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%OptimizeFunctionOnNextCall(foo);
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const o = foo();
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Object.defineProperty(o, 'c', {value: 42});
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