1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 class OtherClass { 18 static { 19 a = 42; 20 b = 54; 21 } 22 23 static int a; 24 static int b; 25 } 26 27 public final class Main { 28 29 /// CHECK-START: int Main.accessTwoStatics() GVN (before) 30 /// CHECK-DAG: <<Class1:l\d+>> LoadClass 31 /// CHECK-DAG: ClinitCheck [<<Class1>>] 32 /// CHECK-DAG: <<Class2:l\d+>> LoadClass 33 /// CHECK-DAG: ClinitCheck [<<Class2>>] 34 35 /// CHECK-START: int Main.accessTwoStatics() GVN (after) 36 /// CHECK-DAG: <<Class:l\d+>> LoadClass 37 /// CHECK-DAG: ClinitCheck [<<Class>>] 38 /// CHECK-NOT: ClinitCheck 39 40 public static int accessTwoStatics() { 41 return OtherClass.b - OtherClass.a; 42 } 43 44 /// CHECK-START: int Main.accessTwoStaticsCallInBetween() GVN (before) 45 /// CHECK-DAG: <<Class1:l\d+>> LoadClass 46 /// CHECK-DAG: ClinitCheck [<<Class1>>] 47 /// CHECK-DAG: <<Class2:l\d+>> LoadClass 48 /// CHECK-DAG: ClinitCheck [<<Class2>>] 49 50 /// CHECK-START: int Main.accessTwoStaticsCallInBetween() GVN (after) 51 /// CHECK-DAG: <<Class:l\d+>> LoadClass 52 /// CHECK-DAG: ClinitCheck [<<Class>>] 53 /// CHECK-NOT: ClinitCheck 54 55 public static int accessTwoStaticsCallInBetween() { 56 int b = OtherClass.b; 57 foo(); 58 return b - OtherClass.a; 59 } 60 61 public static void foo() { 62 try { 63 Thread.sleep(0); 64 } catch (Exception e) { 65 throw new Error(e); 66 } 67 } 68 69 public static void main(String[] args) { 70 if (accessTwoStatics() != 12) { 71 throw new Error("Expected 12"); 72 } 73 74 if (accessTwoStaticsCallInBetween() != 12) { 75 throw new Error("Expected 12"); 76 } 77 } 78 } 79
