// Copyright 2017 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: --allow-natives-syntax --turbo-escape class C { constructor(x) { this.a = x; } }; class D { constructor(x) { this.a = x; } }; function foo(){ var x = new C(7); var y = new D(x); var z = y.a; %DeoptimizeNow(); assertEquals(7, z.a); } %PrepareFunctionForOptimization(foo); foo(); foo(); foo(); foo(); %OptimizeFunctionOnNextCall(foo) foo();