e31f0a7d25
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
945 B
JavaScript
34 lines
945 B
JavaScript
// Copyright 2016 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: --mark-shared-functions-for-tier-up --allow-natives-syntax --expose-gc
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function foo() {
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function bar() {};
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%PrepareFunctionForOptimization(bar);
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return bar;
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}
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// Mark bar's shared function info for tier-up
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// (but don't optimize).
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;
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%PrepareFunctionForOptimization(foo);
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var bar = foo();
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%OptimizeFunctionOnNextCall(bar);
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// Avoid flushing foo (and thereby making bar's shared function info
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// dead) by marking it to be optimized.
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%OptimizeFunctionOnNextCall(foo);
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// Throw away the JSFunction we have for bar and GC until its code has
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// been flushed.
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bar = null;
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for (var i = 0; i < 6; i++) {
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gc();
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}
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// Now create a new JSFunction from bar's shared function info and call it,
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// we should not optimize without recompiling the baseline code.
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foo()();
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