1 /*
2  * Copyright (C) 2014 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 // Simple test for array accesses.
18 
19 public class Main extends TestCase {
main(String[] args)20   public static void main(String[] args) {
21     $opt$testReads(new boolean[1], new byte[1], new char[1], new short[1],
22                    new int[1], new Object[1], new long[1], new float[1], new double[1], 0);
23     $opt$testWrites(new boolean[2], new byte[2], new char[2], new short[2],
24                     new int[2], new Object[2], new long[2], new float[2], new double[2], 1);
25     ensureThrows(new boolean[2], 2);
26     ensureThrows(new boolean[2], 4);
27     ensureThrows(new boolean[2], -1);
28     ensureThrows(new boolean[2], Integer.MIN_VALUE);
29     ensureThrows(new boolean[2], Integer.MAX_VALUE);
30   }
31 
$opt$testReads(boolean[] bools, byte[] bytes, char[] chars, short[] shorts, int[] ints, Object[] objects, long[] longs, float[] floats, double[] doubles, int index)32   static void $opt$testReads(boolean[] bools, byte[] bytes, char[] chars, short[] shorts,
33                              int[] ints, Object[] objects, long[] longs, float[] floats,
34                              double[] doubles, int index) {
35     assertEquals(false, bools[0]);
36     assertEquals(false, bools[index]);
37 
38     assertEquals(0, bytes[0]);
39     assertEquals(0, bytes[index]);
40 
41     assertEquals(0, chars[0]);
42     assertEquals(0, chars[index]);
43 
44     assertEquals(0, shorts[0]);
45     assertEquals(0, shorts[index]);
46 
47     assertEquals(0, ints[0]);
48     assertEquals(0, ints[index]);
49 
50     assertNull(objects[0]);
51     assertNull(objects[index]);
52 
53     assertEquals(0, longs[0]);
54     assertEquals(0, longs[index]);
55 
56     assertEquals(0, floats[0]);
57     assertEquals(0, floats[index]);
58 
59     assertEquals(0, doubles[0]);
60     assertEquals(0, doubles[index]);
61   }
62 
$opt$testWrites(boolean[] bools, byte[] bytes, char[] chars, short[] shorts, int[] ints, Object[] objects, long[] longs, float[] floats, double doubles[], int index)63   static void $opt$testWrites(boolean[] bools, byte[] bytes, char[] chars, short[] shorts,
64                               int[] ints, Object[] objects, long[] longs, float[] floats,
65                               double doubles[], int index) {
66     bools[0] = true;
67     assertEquals(true, bools[0]);
68     bools[index] = true;
69     assertEquals(true, bools[index]);
70 
71     bytes[0] = -4;
72     assertEquals(-4, bytes[0]);
73     bytes[index] = -8;
74     assertEquals(-8, bytes[index]);
75 
76     chars[0] = 'c';
77     assertEquals('c', chars[0]);
78     chars[index] = 'd';
79     assertEquals('d', chars[index]);
80 
81     chars[0] = 65535;
82     assertEquals(65535, chars[0]);
83     // Do an update between the two max value updates, to avoid
84     // optimizing the second away.
85     chars[index] = 0;
86     assertEquals(0, chars[index]);
87     chars[index] = 65535;
88     assertEquals(65535, chars[index]);
89 
90     shorts[0] = -42;
91     assertEquals(-42, shorts[0]);
92     shorts[index] = -84;
93     assertEquals(-84, shorts[index]);
94 
95     ints[0] = -32;
96     assertEquals(-32, ints[0]);
97     ints[index] = -64;
98     assertEquals(-64, ints[index]);
99 
100     Object o1 = new Object();
101     objects[0] = o1;
102     assertEquals(o1, objects[0]);
103     Object o2 = new Object();
104     objects[index] = o2;
105     assertEquals(o2, objects[index]);
106     // Longs are initially not supported in the linear scan register allocator
107     // on 32bits. So we call out a long helper to ensure this method gets
108     // optimized.
109     $opt$testLongWrites(longs, index);
110 
111     float f = 1.0F;
112     floats[0] = f / (1 | 0);
113     assertEquals(f, floats[0]);
114     floats[index] = f / (1 | 0);
115     assertEquals(f, floats[index]);
116 
117     double d = 1.0F;
118     doubles[0] = d / (1 | 0);
119     assertEquals(d, doubles[0]);
120     doubles[index] = d / (1 | 0);
121     assertEquals(d, doubles[index]);
122   }
123 
$opt$testLongWrites(long[] longs, int index)124   public static void $opt$testLongWrites(long[] longs, int index) {
125     long l = -21876876876876876L;
126     longs[0] = l;
127     assertEquals(l, longs[0]);
128     l = -21876876876876877L;
129     longs[index] = l;
130     assertEquals(l, longs[index]);
131   }
132 
ensureThrows(boolean[] array, int index)133   public static void ensureThrows(boolean[] array, int index) {
134     ArrayIndexOutOfBoundsException exception = null;
135     try {
136       $opt$doArrayLoad(array, index);
137     } catch (ArrayIndexOutOfBoundsException e) {
138       exception = e;
139     }
140 
141     assertNotNull(exception);
142     assertTrue(exception.toString().contains(Integer.toString(index)));
143 
144     exception = null;
145     try {
146       $opt$doArrayStore(array, index);
147     } catch (ArrayIndexOutOfBoundsException e) {
148       exception = e;
149     }
150 
151     assertNotNull(exception);
152     assertTrue(exception.toString().contains(Integer.toString(index)));
153   }
154 
$opt$doArrayLoad(boolean[] array, int index)155   public static void $opt$doArrayLoad(boolean[] array, int index) {
156     boolean res = array[index];
157   }
158 
$opt$doArrayStore(boolean[] array, int index)159   public static void $opt$doArrayStore(boolean[] array, int index) {
160     array[index] = false;
161   }
162 }
163