1 /*
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3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
14  *
15  * You should have received a copy of the GNU General Public License version
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23 
24 package compiler.vectorapi;
25 
26 import jdk.incubator.vector.ByteVector;
27 import jdk.incubator.vector.Vector;
28 import jdk.incubator.vector.VectorSpecies;
29 
30 import java.util.Arrays;
31 
32 import jdk.test.lib.format.ArrayDiff;
33 
34 /*
35  * @test
36  * @bug 8259353 8259601
37  * @summary VectorReinterpretNode is incorrectly optimized out
38  * @modules jdk.incubator.vector
39  * @library /test/lib
40  *
41  * @run main compiler.vectorapi.Test8259353
42  */
43 public class Test8259353 {
44 
45     static final VectorSpecies<Byte> SPECIES_128 = ByteVector.SPECIES_128;
46     static final VectorSpecies<Byte> SPECIES_64 = ByteVector.SPECIES_64;
47 
48     static final byte[] a = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
49     static final byte[] b = new byte[16];
50     static final byte[] c = new byte[16];
51     static final byte[] r = {0, 1, 2, 3, 4, 5, 6, 7, 0, 0, 0, 0, 0, 0, 0, 0};
52 
func()53     private static void func() {
54         var av = ByteVector.fromArray(SPECIES_128, a, 0);
55         var bv = (ByteVector)av.reinterpretShape(SPECIES_64, 0);
56         bv.intoArray(b, 0);
57 
58         var cv = (ByteVector)bv.reinterpretShape(SPECIES_128, 0);
59         cv.intoArray(c, 0);
60     }
61 
main(String[] args)62     public static void main(String[] args) {
63         for (int i = 0; i < 100000; i++) {
64             func();
65         }
66 
67         System.out.println("a: " + Arrays.toString(a));
68         System.out.println("b: " + Arrays.toString(b));
69         System.out.println("c: " + Arrays.toString(c));
70 
71         var diff = ArrayDiff.of(b, r);
72         if (!diff.areEqual()) {
73             throw new AssertionError("b array is unexpected: " + diff.format());
74         }
75 
76         diff = ArrayDiff.of(c, r);
77         if (!diff.areEqual()) {
78             throw new AssertionError("c array is unexpected: " + diff.format());
79         }
80     }
81 }
82 
83