1/*
2 * Copyright (C) 2016 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  /// CHECK-START: void Main.testNewStringFromBytes() builder (after)
20  /// CHECK-DAG:     InvokeStaticOrDirect method_name:java.lang.StringFactory.newStringFromBytes intrinsic:None
21
22  /// CHECK-START: void Main.testNewStringFromBytes() intrinsics_recognition (after)
23  /// CHECK-DAG:     InvokeStaticOrDirect method_name:java.lang.StringFactory.newStringFromBytes intrinsic:StringNewStringFromBytes
24
25  public static void testNewStringFromBytes() {
26    byte[] bytes = { 'f', 'o', 'o' };
27    String s = StringFactory.newStringFromBytes(bytes, 0, 0, 3);
28    System.out.println(s);
29  }
30
31  // The (native) method
32  //
33  //   java.lang.StringFactory.newStringFromChars(int offset, int charCount, char[] data)
34  //
35  // is recognized as intrinsic StringNewStringFromChars.  However,
36  // because this method is not public, we cannot call it and check
37  // that the compiler actually intrinsifies it (as it does for the
38  // StringNewStringFromBytes and StringNewStringFromString
39  // intrinsics) with Checker.
40  //
41  // We can call a public method such as
42  //
43  //   java.lang.StringFactory.newStringFromChars(char[] data)
44  //
45  // which contains a call to the former (non-public) native method.
46  // However, this call will not be inlined (because it is a method in
47  // another Dex file and which contains a call, which needs an
48  // environment), so we cannot use Checker here to ensure the native
49  // call was intrinsified either.
50
51  /// CHECK-START: void Main.testNewStringFromChars() builder (after)
52  /// CHECK-DAG:     InvokeStaticOrDirect method_name:java.lang.StringFactory.newStringFromChars intrinsic:None
53
54  /// CHECK-START: void Main.testNewStringFromChars() intrinsics_recognition (after)
55  /// CHECK-DAG:     InvokeStaticOrDirect method_name:java.lang.StringFactory.newStringFromChars intrinsic:None
56
57  /// CHECK-START: void Main.testNewStringFromChars() inliner (after)
58  /// CHECK-DAG:     InvokeStaticOrDirect method_name:java.lang.StringFactory.newStringFromChars intrinsic:None
59
60  public static void testNewStringFromChars() {
61    char[] chars = { 'b', 'a', 'r' };
62    String s = StringFactory.newStringFromChars(chars);
63    System.out.println(s);
64  }
65
66  /// CHECK-START: void Main.testNewStringFromString() builder (after)
67  /// CHECK-DAG:     InvokeStaticOrDirect method_name:java.lang.StringFactory.newStringFromString intrinsic:None
68
69  /// CHECK-START: void Main.testNewStringFromString() intrinsics_recognition (after)
70  /// CHECK-DAG:     InvokeStaticOrDirect method_name:java.lang.StringFactory.newStringFromString intrinsic:StringNewStringFromString
71
72  public static void testNewStringFromString() {
73    String s1 = "baz";
74    String s2 = StringFactory.newStringFromString(s1);
75    System.out.println(s2);
76  }
77
78  public static void main(String[] args) throws Exception {
79    testNewStringFromBytes();
80    testNewStringFromChars();
81    testNewStringFromString();
82  }
83}
84