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 
useValue(boolean value)24   private static int useValue(boolean value) {
25     return 42;
26   }
27 
runTest(boolean input1)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 
main(String[] args)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