20 lines
469 B
JavaScript
20 lines
469 B
JavaScript
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// Copyright 2017 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 --expose-gc
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function* gen() {}
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(function warmup() {
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for (var i = 0; i < 100; ++i) {
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var g = gen();
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g.p = 42;
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}
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})();
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gc(); // Ensure no instance alive.
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gen(); // Still has unused fields.
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%OptimizeFunctionOnNextCall(gen);
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gen(); // Was shrunk, boom!
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