1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
|
/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
public class Main {
public static void main(String[] args) {
arraycopy();
try {
arraycopy(new Object());
throw new Error("Should not be here");
} catch (ArrayStoreException ase) {
// Ignore.
}
try {
arraycopy(null);
throw new Error("Should not be here");
} catch (NullPointerException npe) {
// Ignore.
}
try {
arraycopy(new Object[1]);
throw new Error("Should not be here");
} catch (ArrayIndexOutOfBoundsException aiooe) {
// Ignore.
}
arraycopy(new Object[2]);
arraycopy(new Object[2], 0);
try {
arraycopy(new Object[1], 1);
throw new Error("Should not be here");
} catch (ArrayIndexOutOfBoundsException aiooe) {
// Ignore.
}
}
/// CHECK-START-X86_64: void Main.arraycopy() disassembly (after)
/// CHECK: InvokeStaticOrDirect
/// CHECK-NOT: test
/// CHECK-NOT: call
/// CHECK: ReturnVoid
// Checks that the call is intrinsified and that there is no test instruction
// when we know the source and destination are not null.
public static void arraycopy() {
Object[] obj = new Object[4];
System.arraycopy(obj, 1, obj, 0, 1);
}
public static void arraycopy(Object obj) {
System.arraycopy(obj, 1, obj, 0, 1);
}
public static void arraycopy(Object[] obj, int pos) {
System.arraycopy(obj, pos, obj, 0, obj.length);
}
}
|