1 /*
 2  * Copyright (c) 2023, Red Hat, Inc. All rights reserved.
 3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 4  *
 5  * This code is free software; you can redistribute it and/or modify it
 6  * under the terms of the GNU General Public License version 2 only, as
 7  * published by the Free Software Foundation.
 8  *
 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
16  * 2 along with this work; if not, write to the Free Software Foundation,
17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18  *
19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20  * or visit www.oracle.com if you need additional information or have any
21  * questions.
22  */
23 
24 package compiler.c2.irTests;
25 
26 import compiler.lib.ir_framework.*;
27 import jdk.test.lib.Utils;
28 import jdk.internal.misc.Unsafe;
29 import java.util.Objects;
30 import java.util.Random;
31 
32 /*
33  * @test
34  * @bug 8300256
35  * @modules java.base/jdk.internal.misc
36  * @library /test/lib /
37  * @run driver compiler.c2.irTests.TestVectorizationNotRun
38  */
39 
40 public class TestVectorizationNotRun {
41     private static final Unsafe UNSAFE = Unsafe.getUnsafe();
42 
43     public static void main(String[] args) {
44         // Cross-product: +-AlignVector and +-UseCompactObjectHeaders
45         TestFramework.runWithFlags("--add-modules", "java.base", "--add-exports", "java.base/jdk.internal.misc=ALL-UNNAMED",
46                                    "-XX:+UnlockExperimentalVMOptions", "-XX:-UseCompactObjectHeaders",
47                                    "-XX:-AlignVector");
48         TestFramework.runWithFlags("--add-modules", "java.base", "--add-exports", "java.base/jdk.internal.misc=ALL-UNNAMED",
49                                    "-XX:+UnlockExperimentalVMOptions", "-XX:-UseCompactObjectHeaders",
50                                    "-XX:+AlignVector");
51         TestFramework.runWithFlags("--add-modules", "java.base", "--add-exports", "java.base/jdk.internal.misc=ALL-UNNAMED",
52                                    "-XX:+UnlockExperimentalVMOptions", "-XX:+UseCompactObjectHeaders",
53                                    "-XX:-AlignVector");
54         TestFramework.runWithFlags("--add-modules", "java.base", "--add-exports", "java.base/jdk.internal.misc=ALL-UNNAMED",
55                                    "-XX:+UnlockExperimentalVMOptions", "-XX:+UseCompactObjectHeaders",
56                                    "-XX:+AlignVector");
57     }
58 
59     static int size = 1024;
60     static int sizeBytes = 8 * size;
61     static byte[] byteArray = new byte[sizeBytes];
62     static long[] longArray = new long[size];
63 
64     @Test
65     @IR(counts = { IRNode.LOAD_VECTOR_L, ">=1", IRNode.STORE_VECTOR, ">=1" },
66         applyIfOr = { "UseCompactObjectHeaders", "false", "AlignVector", "false" },
67         applyIfPlatform = {"64-bit", "true"},
68         applyIfCPUFeatureOr = {"sse4.1", "true", "asimd", "true"})
69     public static void test(byte[] dest, long[] src) {
70         for (int i = 0; i < src.length; i++) {
71             if ((i < 0) || (8 > sizeBytes - i)) {
72                 throw new IndexOutOfBoundsException();
73             }
74             UNSAFE.putLongUnaligned(dest, UNSAFE.ARRAY_BYTE_BASE_OFFSET + i * 8, src[i]);
75             // For UseCompactObjectHeaders and AlignVector, we must 8-byte align all vector loads/stores.
76             // But the long-stores to the byte-array are never aligned:
77             // adr = base + UNSAFE.ARRAY_BYTE_BASE_OFFSET + 8*iter
78             //              = 16 (or 12 if UseCompactObjectHeaders=true)
79         }
80     }
81 
82     @Run(test = "test")
83     public static void test_runner() {
84         test(byteArray, longArray);
85     }
86 }