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.test.whitebox.WhiteBox;
29 import jdk.internal.misc.Unsafe;
30 import java.util.Random;
31 import java.util.Arrays;
32 import java.nio.ByteOrder;
33
34 /*
35 * @test
36 * @bug 8300258
37 * @key randomness
38 * @requires (os.simpleArch == "x64") | (os.simpleArch == "aarch64")
39 * @summary C2: vectorization fails on simple ByteBuffer loop
40 * @modules java.base/jdk.internal.misc
41 * @library /test/lib /
42 * @build jdk.test.whitebox.WhiteBox
43 * @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
44 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI compiler.c2.irTests.TestVectorizationMismatchedAccess
45 */
46
47 public class TestVectorizationMismatchedAccess {
48 private static final Unsafe UNSAFE = Unsafe.getUnsafe();
49 private static final Random RANDOM = Utils.getRandomInstance();
50 private final static WhiteBox wb = WhiteBox.getWhiteBox();
51
52 public static void main(String[] args) {
53 if (ByteOrder.nativeOrder() != ByteOrder.LITTLE_ENDIAN) {
54 throw new RuntimeException("fix test that was written for a little endian platform");
55 }
56 TestFramework.runWithFlags("--add-modules", "java.base", "--add-exports", "java.base/jdk.internal.misc=ALL-UNNAMED");
57 }
58
59 static int size = 1024;
60 static byte[] byteArray = new byte[size * 8];
61 static long[] longArray = new long[size];
62 static byte[] verifyByteArray = new byte[size * 8];
63 static long[] verifyLongArray = new long[size];
64 static long baseOffset = 0;
65 static long baseOffHeap = UNSAFE.allocateMemory(size * 8);
66
67
68 static {
69 for (int i = 0; i < verifyByteArray.length; i++) {
70 verifyByteArray[i] = (byte)RANDOM.nextInt(Byte.MAX_VALUE);
71 }
72 for (int i = 0; i < verifyLongArray.length; i++) {
73 verifyLongArray[i] = 0;
74 for (int j = 0; j < 8; j++) {
75 verifyLongArray[i] = verifyLongArray[i] | (((long)verifyByteArray[8 * i + j]) << 8 * j);
76 }
77 }
78 }
79
80 static private void runAndVerify(Runnable test, int offset) {
81 System.arraycopy(verifyLongArray, 0, longArray, 0, longArray.length);
82 Arrays.fill(byteArray, (byte)0);
83 test.run();
84 int i;
85 for (i = 0; i < Math.max(offset, 0); i++) {
86 if (byteArray[i] != 0) {
87 throw new RuntimeException("Incorrect result at " + i + " " + byteArray[i] + " != 0");
88 }
89 }
90 for (; i < Math.min(byteArray.length + offset, byteArray.length); i++) {
91 if (byteArray[i] != verifyByteArray[i - offset]) {
92 throw new RuntimeException("Incorrect result at " + i + " " + byteArray[i] + " != " + verifyByteArray[i-offset]);
93 }
94 }
95 for (; i < byteArray.length; i++) {
96 if (byteArray[i] != 0) {
97 throw new RuntimeException("Incorrect result at " + i + " " + byteArray[i] + " != 0");
98 }
99 }
100 }
101
102 static private void runAndVerify2(Runnable test, int offset) {
103 System.arraycopy(verifyByteArray, 0, byteArray, 0, byteArray.length);
104 test.run();
105 int i;
106 for (i = 0; i < Math.max(offset, 0); i++) {
107 if (byteArray[i] != verifyByteArray[i]) {
108 throw new RuntimeException("Incorrect result at " + i + " " + byteArray[i] + " != " + verifyByteArray[i]);
109 }
110 }
111 for (; i < Math.min(byteArray.length + offset, byteArray.length); i++) {
112 int val = offset > 0 ? verifyByteArray[(i-offset) % 8] : verifyByteArray[i-offset];
113 if (byteArray[i] != val) {
114 throw new RuntimeException("Incorrect result at " + i + " " + byteArray[i] + " != " + verifyByteArray[i-offset]);
115 }
116 }
117 for (; i < byteArray.length; i++) {
118 if (byteArray[i] != verifyByteArray[i]) {
119 throw new RuntimeException("Incorrect result at " + i + " " + byteArray[i] + " != " + verifyByteArray[i]);
120 }
121 }
122 }
123
124
125 static private void runAndVerify3(Runnable test, int offset) {
126 System.arraycopy(verifyLongArray, 0, longArray, 0, longArray.length);
127 for (int i = 0; i < size * 8; i++) {
128 UNSAFE.putByte(null, baseOffHeap + i, (byte)0);
129 }
130 test.run();
131 int i;
132 for (i = 0; i < Math.max(offset, 0); i++) {
133 if (UNSAFE.getByte(null, baseOffHeap + i) != 0) {
134 throw new RuntimeException("Incorrect result at " + i + " " + byteArray[i] + " != 0");
135 }
136 }
137 for (; i < Math.min(size * 8 + offset, size * 8); i++) {
138 if (UNSAFE.getByte(null, baseOffHeap + i) != verifyByteArray[i - offset]) {
139 throw new RuntimeException("Incorrect result at " + i + " " + byteArray[i] + " != " + verifyByteArray[i-offset]);
140 }
141 }
142 for (; i < byteArray.length; i++) {
143 if (UNSAFE.getByte(null, baseOffHeap + i) != 0) {
144 throw new RuntimeException("Incorrect result at " + i + " " + byteArray[i] + " != 0");
145 }
146 }
147 }
148
149 @Test
150 @IR(counts = { IRNode.LOAD_VECTOR_L, ">=1", IRNode.STORE_VECTOR, ">=1" })
151 public static void testByteLong1(byte[] dest, long[] src) {
152 for (int i = 0; i < src.length; i++) {
153 UNSAFE.putLongUnaligned(dest, UNSAFE.ARRAY_BYTE_BASE_OFFSET + 8 * i, src[i]);
154 }
155 }
156
157 @Run(test = "testByteLong1")
158 public static void testByteLong1_runner() {
159 runAndVerify(() -> testByteLong1(byteArray, longArray), 0);
160 }
161
162 @Test
163 @IR(counts = { IRNode.LOAD_VECTOR_L, ">=1", IRNode.STORE_VECTOR, ">=1" })
164 public static void testByteLong2(byte[] dest, long[] src) {
165 for (int i = 1; i < src.length; i++) {
166 UNSAFE.putLongUnaligned(dest, UNSAFE.ARRAY_BYTE_BASE_OFFSET + 8 * (i - 1), src[i]);
167 }
168 }
169
170 @Run(test = "testByteLong2")
171 public static void testByteLong2_runner() {
172 runAndVerify(() -> testByteLong2(byteArray, longArray), -8);
173 }
174
175 @Test
176 @IR(counts = { IRNode.LOAD_VECTOR_L, ">=1", IRNode.STORE_VECTOR, ">=1" })
177 public static void testByteLong3(byte[] dest, long[] src) {
178 for (int i = 0; i < src.length - 1; i++) {
179 UNSAFE.putLongUnaligned(dest, UNSAFE.ARRAY_BYTE_BASE_OFFSET + 8 * (i + 1), src[i]);
180 }
181 }
182
183 @Run(test = "testByteLong3")
184 public static void testByteLong3_runner() {
185 runAndVerify(() -> testByteLong3(byteArray, longArray), 8);
186 }
187
188 @Test
189 @IR(counts = { IRNode.LOAD_VECTOR_L, ">=1", IRNode.STORE_VECTOR, ">=1" },
190 applyIf = {"AlignVector", "false"})
191 // AlignVector cannot guarantee that invar is aligned.
192 public static void testByteLong4(byte[] dest, long[] src, int start, int stop) {
193 for (int i = start; i < stop; i++) {
194 UNSAFE.putLongUnaligned(dest, 8 * i + baseOffset, src[i]);
195 }
196 }
197
198 @Run(test = "testByteLong4")
199 public static void testByteLong4_runner() {
200 baseOffset = UNSAFE.ARRAY_BYTE_BASE_OFFSET;
201 runAndVerify(() -> testByteLong4(byteArray, longArray, 0, size), 0);
202 }
203
204 @Test
205 @IR(counts = { IRNode.LOAD_VECTOR_L, ">=1", IRNode.STORE_VECTOR, ">=1" })
206 public static void testByteLong5(byte[] dest, long[] src, int start, int stop) {
207 for (int i = start; i < stop; i++) {
208 UNSAFE.putLongUnaligned(dest, UNSAFE.ARRAY_BYTE_BASE_OFFSET + 8 * (i + baseOffset), src[i]);
209 }
210 }
211
212 @Run(test = "testByteLong5")
213 public static void testByteLong5_runner() {
214 baseOffset = 1;
215 runAndVerify(() -> testByteLong5(byteArray, longArray, 0, size-1), 8);
216 }
217
218 @Test
219 @IR(counts = { IRNode.LOAD_VECTOR_L, ">=1", IRNode.STORE_VECTOR, ">=1" })
220 public static void testByteByte1(byte[] dest, byte[] src) {
221 for (int i = 0; i < src.length / 8; i++) {
222 UNSAFE.putLongUnaligned(dest, UNSAFE.ARRAY_BYTE_BASE_OFFSET + 8 * i, UNSAFE.getLongUnaligned(src, UNSAFE.ARRAY_BYTE_BASE_OFFSET + 8 * i));
223 }
224 }
225
226 @Run(test = "testByteByte1")
227 public static void testByteByte1_runner() {
228 runAndVerify2(() -> testByteByte1(byteArray, byteArray), 0);
229 }
230
231 @Test
232 @IR(counts = { IRNode.LOAD_VECTOR_L, ">=1", IRNode.STORE_VECTOR, ">=1" })
233 public static void testByteByte2(byte[] dest, byte[] src) {
234 for (int i = 1; i < src.length / 8; i++) {
235 UNSAFE.putLongUnaligned(dest, UNSAFE.ARRAY_BYTE_BASE_OFFSET + 8 * (i - 1), UNSAFE.getLongUnaligned(src, UNSAFE.ARRAY_BYTE_BASE_OFFSET + 8 * i));
236 }
237 }
238
239 @Run(test = "testByteByte2")
240 public static void testByteByte2_runner() {
241 runAndVerify2(() -> testByteByte2(byteArray, byteArray), -8);
242 }
243
244 @Test
245 @IR(failOn = { IRNode.LOAD_VECTOR_L, IRNode.STORE_VECTOR })
246 public static void testByteByte3(byte[] dest, byte[] src) {
247 for (int i = 0; i < src.length / 8 - 1; i++) {
248 UNSAFE.putLongUnaligned(dest, UNSAFE.ARRAY_BYTE_BASE_OFFSET + 8 * (i + 1), UNSAFE.getLongUnaligned(src, UNSAFE.ARRAY_BYTE_BASE_OFFSET + 8 * i));
249 }
250 }
251
252 @Run(test = "testByteByte3")
253 public static void testByteByte3_runner() {
254 runAndVerify2(() -> testByteByte3(byteArray, byteArray), 8);
255 }
256
257 @Test
258 @IR(failOn = { IRNode.LOAD_VECTOR_L, IRNode.STORE_VECTOR })
259 public static void testByteByte4(byte[] dest, byte[] src, int start, int stop) {
260 for (int i = start; i < stop; i++) {
261 UNSAFE.putLongUnaligned(dest, 8 * i + baseOffset, UNSAFE.getLongUnaligned(src, UNSAFE.ARRAY_BYTE_BASE_OFFSET + 8 * i));
262 }
263 }
264
265 @Run(test = "testByteByte4")
266 public static void testByteByte4_runner() {
267 baseOffset = UNSAFE.ARRAY_BYTE_BASE_OFFSET;
268 runAndVerify2(() -> testByteByte4(byteArray, byteArray, 0, size), 0);
269 }
270
271 @Test
272 @IR(failOn = { IRNode.LOAD_VECTOR_L, IRNode.STORE_VECTOR })
273 public static void testByteByte5(byte[] dest, byte[] src, int start, int stop) {
274 for (int i = start; i < stop; i++) {
275 UNSAFE.putLongUnaligned(dest, UNSAFE.ARRAY_BYTE_BASE_OFFSET + 8 * (i + baseOffset), UNSAFE.getLongUnaligned(src, UNSAFE.ARRAY_BYTE_BASE_OFFSET + 8 * i));
276 }
277 }
278
279 @Run(test = "testByteByte5")
280 public static void testByteByte5_runner() {
281 baseOffset = 1;
282 runAndVerify2(() -> testByteByte5(byteArray, byteArray, 0, size-1), 8);
283 }
284
285 @Test
286 @IR(counts = { IRNode.LOAD_VECTOR_L, ">=1", IRNode.STORE_VECTOR, ">=1" })
287 public static void testOffHeapLong1(long dest, long[] src) {
288 for (int i = 0; i < src.length; i++) {
289 UNSAFE.putLongUnaligned(null, dest + 8 * i, src[i]);
290 }
291 }
292
293 @Run(test = "testOffHeapLong1")
294 public static void testOffHeapLong1_runner() {
295 runAndVerify3(() -> testOffHeapLong1(baseOffHeap, longArray), 0);
296 }
297
298 @Test
299 @IR(counts = { IRNode.LOAD_VECTOR_L, ">=1", IRNode.STORE_VECTOR, ">=1" })
300 public static void testOffHeapLong2(long dest, long[] src) {
301 for (int i = 1; i < src.length; i++) {
302 UNSAFE.putLongUnaligned(null, dest + 8 * (i - 1), src[i]);
303 }
304 }
305
306 @Run(test = "testOffHeapLong2")
307 public static void testOffHeapLong2_runner() {
308 runAndVerify3(() -> testOffHeapLong2(baseOffHeap, longArray), -8);
309 }
310
311 @Test
312 @IR(counts = { IRNode.LOAD_VECTOR_L, ">=1", IRNode.STORE_VECTOR, ">=1" })
313 public static void testOffHeapLong3(long dest, long[] src) {
314 for (int i = 0; i < src.length - 1; i++) {
315 UNSAFE.putLongUnaligned(null, dest + 8 * (i + 1), src[i]);
316 }
317 }
318
319 @Run(test = "testOffHeapLong3")
320 public static void testOffHeapLong3_runner() {
321 runAndVerify3(() -> testOffHeapLong3(baseOffHeap, longArray), 8);
322 }
323
324 @Test
325 @IR(counts = { IRNode.LOAD_VECTOR_L, ">=1", IRNode.STORE_VECTOR, ">=1" },
326 applyIf = {"AlignVector", "false"})
327 // AlignVector cannot guarantee that invar is aligned.
328 public static void testOffHeapLong4(long dest, long[] src, int start, int stop) {
329 for (int i = start; i < stop; i++) {
330 UNSAFE.putLongUnaligned(null, dest + 8 * i + baseOffset, src[i]);
331 }
332 }
333
334 @Run(test = "testOffHeapLong4")
335 public static void testOffHeapLong4_runner() {
336 baseOffset = 8;
337 runAndVerify3(() -> testOffHeapLong4(baseOffHeap, longArray, 0, size-1), 8);
338 }
339 }