| // 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(); |