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 public class Main { 18 19 // This tests a specific situation when condition ends up 20 // not getting materialized if only used by an environment. 21 22 private static Object obj; 23 24 private static int useValue(boolean value) { 25 return 42; 26 } 27 28 private static int runTest(boolean input1) { 29 boolean negation = !input1; 30 // Need the negation to appear in front of an If, and 31 // its condition to disappear. 'javac' will generate 32 // "if (!input1)" here and GVN will collapse the two 33 // conditions. 34 if (input1) { 35 // Generates an environment use of 'negation'. 36 obj = new Object(); 37 } 38 // Uses 'negation' but disappears with inlining. 39 return useValue(negation); 40 } 41 42 public static void main(String[] args) throws Exception { 43 int result = runTest(true); 44 if (result != 42) { 45 throw new Error("Expected 42, got " + result); 46 } 47 } 48 } 49
