1/* 2 * Copyright (c) 2025 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16/* 17 * Description: 18 * 1. This code tests the lazy deoptimization that occurs in ldobjbyname. 19 * After the JIT code for function 'f' is compiled, 20 * modifying an HClass invalidates the function, 21 * and subsequent accesses to it will detect this invalidation. 22 * 2. Lazy deopt occurs on constructor. 23 */ 24 25class A {} 26let a2 = new A(); 27A.prototype.__proto__.x = 1; 28let cnt = 0; 29function g() 30{ 31 cnt++; 32 print(cnt); 33 if (cnt == 2) { 34 // Change the property 'x' at the the prototype chain, 35 // triggering lazy deoptimization of the JIT-compiled 'f' function. 36 A.prototype.x = 2; 37 } 38} 39class B extends A{ 40 constructor() { 41 super(); 42 g(); 43 } 44} 45 46function f() { 47 try { 48 let a = Reflect.construct(B, []); 49 print(a.name); 50 } catch (e) { 51 print("Exception:", e); 52 } 53 print(a2.x); 54} 55 56f(); 57ArkTools.jitCompileAsync(f); 58print(ArkTools.waitJitCompileFinish(f)); 59 60print("------------------------------------------------------"); 61f();