// Copyright 2016 the V8 project authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. // Flags: --mark-shared-functions-for-tier-up --allow-natives-syntax --expose-gc function foo() { function bar() { } return bar; } // Mark bar's shared function info for tier-up // (but don't optimize). var bar = foo(); %OptimizeFunctionOnNextCall(bar); // Avoid flushing foo (and thereby making bar's shared function info // dead) by marking it to be optimized. %OptimizeFunctionOnNextCall(foo); // Throw away the JSFunction we have for bar and GC until its code has // been flushed. bar = null; for (var i = 0; i < 6; i++) { gc(); } // Now create a new JSFunction from bar's shared function info and call it, // we should not optimize without recompiling the baseline code. foo()();