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PR-URL: https://github.com/nodejs/node/pull/28918 Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Rich Trott <rtrott@gmail.com>
34 lines
866 B
JavaScript
34 lines
866 B
JavaScript
// Copyright 2014 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: --gc-global --noincremental-marking --allow-natives-syntax
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function Ctor() {
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this.foo = 1;
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}
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var o = new Ctor();
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var p = new Ctor();
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function crash(o, timeout) {
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var s = '4000111222'; // Outside Smi range.
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%SetAllocationTimeout(100000, timeout);
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// This allocates a heap number, causing a GC, triggering lazy deopt.
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var end = s >>> 0;
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s = s.substring(0, end);
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// This creates a map dependency, which gives the GC a reason to trigger
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// a lazy deopt when that map dies.
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o.bar = 2;
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};
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%PrepareFunctionForOptimization(crash);
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crash(o, 100000);
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crash(o, 100000);
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crash(p, 100000);
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%OptimizeFunctionOnNextCall(crash);
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crash(o, 100000);
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o = null;
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p = null;
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crash({}, 0);
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