1/*
2 * Copyright (C) 2017 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
17public class Main {
18
19  // Note that this is testing we haven't intrinsified the byte[] arraycopy version.
20  // Once we eventually start doing it, we will need to re-adjust this test.
21
22  /// CHECK-START-X86: void Main.typedCopy(java.lang.Object, byte[]) disassembly (after)
23  /// CHECK: InvokeStaticOrDirect method_name:java.lang.System.arraycopy intrinsic:SystemArrayCopy
24  /// CHECK-NOT:    call
25  /// CHECK: InvokeStaticOrDirect method_name:java.lang.System.arraycopy intrinsic:SystemArrayCopy
26  /// CHECK:        call
27  /// CHECK: ReturnVoid
28  public static void typedCopy(Object o, byte[] foo) {
29    System.arraycopy(o, 1, o, 0, 1);
30    System.arraycopy((Object)foo, 1, (Object)foo, 0, 1);  // Don't use the @hide byte[] overload.
31  }
32
33  public static void untypedCopy(Object o, Object foo) {
34    System.arraycopy(o, 1, o, 0, 1);
35    System.arraycopy(foo, 1, foo, 0, 1);
36  }
37
38  // Test that we still do the optimization after inlining.
39
40  /// CHECK-START-X86: void Main.untypedCopyCaller(java.lang.Object, byte[]) disassembly (after)
41  /// CHECK: InvokeStaticOrDirect method_name:java.lang.System.arraycopy intrinsic:SystemArrayCopy
42  /// CHECK-NOT:    call
43  /// CHECK: InvokeStaticOrDirect method_name:java.lang.System.arraycopy intrinsic:SystemArrayCopy
44  /// CHECK:        call
45  /// CHECK: ReturnVoid
46  public static void untypedCopyCaller(Object o, byte[] array) {
47    untypedCopy(o, array);
48  }
49
50  public static void assertEquals(Object one, Object two) {
51    if (one != two) {
52      throw new Error("Expected " + one + ", got " + two);
53    }
54  }
55
56  public static void main(String[] args) {
57    // Simple sanity checks.
58    byte[] a = new byte[2];
59    Object[] o = new Object[2];
60
61    o[0] = a;
62    o[1] = o;
63    a[0] = 1;
64    a[1] = 2;
65
66    untypedCopyCaller(o, a);
67    assertEquals(o[0], o);
68    assertEquals(o[1], o);
69    assertEquals(a[0], (byte)2);
70    assertEquals(a[1], (byte)2);
71
72    o[0] = a;
73    o[1] = o;
74    a[0] = 1;
75    a[1] = 2;
76
77    typedCopy(o, a);
78    assertEquals(o[0], o);
79    assertEquals(o[1], o);
80    assertEquals(a[0], (byte)2);
81    assertEquals(a[1], (byte)2);
82  }
83}
84