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   /// CHECK-START: void Main.testRedundantPhiCycle(boolean) builder (after)
20   /// CHECK-NOT:  Phi
testRedundantPhiCycle(boolean cond)21   private void testRedundantPhiCycle(boolean cond) {
22     Object o = null;
23     while (true) {
24       if (cond) {
25         o = null;
26       }
27       System.out.println(o);
28     }
29   }
30 
31   /// CHECK-START: void Main.testLoopPhisWithNullAndCrossUses(boolean) builder (after)
32   /// CHECK-NOT:  Phi
testLoopPhisWithNullAndCrossUses(boolean cond)33   private void testLoopPhisWithNullAndCrossUses(boolean cond) {
34     Main a = null;
35     Main b = null;
36     while (a == null) {
37       if (cond) {
38         a = b;
39       } else {
40         b = a;
41       }
42     }
43   }
44 
main(String[] args)45   public static void main(String[] args) {
46   }
47 }
48