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 that we don't put a null check in the card marking code.
20 
21   /// CHECK-START: void Main.test() instruction_simplifier (before)
22   /// CHECK:          ArraySet value_can_be_null:true
23 
24   /// CHECK-START: void Main.test() instruction_simplifier (after)
25   /// CHECK:          ArraySet value_can_be_null:false
26 
27   /// CHECK-START-X86: void Main.test() disassembly (after)
28   /// CHECK:          ArraySet value_can_be_null:false
29   /// CHECK-NOT:      test
30   /// CHECK:          ReturnVoid
test()31   public static void test() {
32     Object[] array = sArray;
33     Object nonNull = array[0];
34     nonNull.getClass(); // Ensure nonNull has an implicit null check.
35     array[1] = nonNull;
36   }
37 
main(String[] args)38   public static void main(String[] args) {}
39 
40   static Object[] sArray;
41 }
42