1 /*
2 * Copyright (c) 2024, Oracle and/or its affiliates. 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.
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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 /**
25 * @test
26 * @bug 8320646
27 * @summary Auto-vectorize Float.floatToFloat16, Float.float16ToFloat APIs, with NaN
28 * @requires vm.compiler2.enabled
29 * @requires (os.arch == "riscv64" & vm.cpu.features ~= ".*zvfh.*")
30 * @library /test/lib /
31 * @run driver compiler.vectorization.TestFloatConversionsVectorNaN nCOH_nAV
32 * @run driver compiler.vectorization.TestFloatConversionsVectorNaN nCOH_yAV
33 * @run driver compiler.vectorization.TestFloatConversionsVectorNaN yCOH_nAV
34 * @run driver compiler.vectorization.TestFloatConversionsVectorNaN yCOH_yAV
35 */
36
37 package compiler.vectorization;
38
39 import java.util.HexFormat;
40
41 import compiler.lib.ir_framework.*;
42 import jdk.test.lib.Asserts;
43
44 public class TestFloatConversionsVectorNaN {
45 private static final int ARRLEN = 1024;
46 private static final int ITERS = 11000;
47 private static float [] finp;
48 private static short [] sout;
49 private static short [] sinp;
50 private static float [] fout;
51
52 public static void main(String args[]) {
53 TestFramework framework = new TestFramework(TestFloatConversionsVectorNaN.class);
54 framework.addFlags("-XX:-TieredCompilation", "-XX:CompileThresholdScaling=0.3");
55 switch (args[0]) {
56 case "nCOH_nAV" -> { framework.addFlags("-XX:+UnlockExperimentalVMOptions", "-XX:-UseCompactObjectHeaders", "-XX:-AlignVector"); }
57 case "nCOH_yAV" -> { framework.addFlags("-XX:+UnlockExperimentalVMOptions", "-XX:-UseCompactObjectHeaders", "-XX:+AlignVector"); }
58 case "yCOH_nAV" -> { framework.addFlags("-XX:+UnlockExperimentalVMOptions", "-XX:+UseCompactObjectHeaders", "-XX:-AlignVector"); }
59 case "yCOH_yAV" -> { framework.addFlags("-XX:+UnlockExperimentalVMOptions", "-XX:+UseCompactObjectHeaders", "-XX:+AlignVector"); }
60 default -> { throw new RuntimeException("Test argument not recognized: " + args[0]); }
61 };
62 framework.start();
63 System.out.println("PASSED");
64 }
65
66 @Test
67 @IR(counts = {IRNode.VECTOR_CAST_F2HF, IRNode.VECTOR_SIZE + "min(max_float, max_short)", "> 0"},
68 applyIfOr = {"UseCompactObjectHeaders", "false", "AlignVector", "false"})
69 public void test_float_float16(short[] sout, float[] finp) {
70 for (int i = 0; i < finp.length; i++) {
71 sout[i] = Float.floatToFloat16(finp[i]);
72 // With AlignVector, we need 8-byte alignment of vector loads/stores.
73 // UseCompactObjectHeaders=false UseCompactObjectHeaders=true
74 // F_adr = base + 16 + 4*i -> i % 2 = 0 F_adr = base + 12 + 4*i -> i % 2 = 1
75 // S_adr = base + 16 + 2*i -> i % 4 = 0 S_adr = base + 12 + 2*i -> i % 4 = 2
76 // -> vectorize -> no vectorization
77 }
78 }
79
80 @Run(test = {"test_float_float16"}, mode = RunMode.STANDALONE)
81 public void kernel_test_float_float16() {
82 int errno = 0;
83 finp = new float[ARRLEN];
84 sout = new short[ARRLEN];
85
86 // Setup
87 for (int i = 0; i < ARRLEN; i++) {
88 if (i%39 == 0) {
89 int x = 0x7f800000 + ((i/39) << 13);
90 x = (i%2 == 0) ? x : (x | 0x80000000);
91 finp[i] = Float.intBitsToFloat(x);
92 } else {
93 finp[i] = (float) i * 1.4f;
94 }
95 }
96 int ranges[][] = {
97 {128, 64},
98 {256, 19},
99 {384-19, 19},
100 {512-19, 17},
101 {640+19, 19},
102 {768+19, 32},
103 {896-19, 32}
104 };
105 for (int range[] : ranges) {
106 int start = range[0];
107 int offset = range[1];
108 for (int i = start; i < start+offset; i++) {
109 int x = 0x7f800000 + (i << 13);
110 finp[i] = Float.intBitsToFloat(x);
111 }
112 }
113
114 // Test
115 for (int i = 0; i < ITERS; i++) {
116 test_float_float16(sout, finp);
117 }
118
119 // Verifying the result
120 for (int i = 0; i < ARRLEN; i++) {
121 errno += assertEquals(i, finp[i], Float.floatToFloat16(finp[i]), sout[i]);
122 }
123
124 if (errno > 0) {
125 throw new RuntimeException("errors occur");
126 }
127 }
128
129 static int assertEquals(int idx, float f, short expected, short actual) {
130 HexFormat hf = HexFormat.of();
131 String msg = "floatToFloat16 wrong result: idx: " + idx + ", \t" + f +
132 ",\t expected: " + hf.toHexDigits(expected) +
133 ",\t actual: " + hf.toHexDigits(actual);
134 if ((expected & 0x7c00) != 0x7c00) {
135 if (expected != actual) {
136 System.err.println(msg);
137 return 1;
138 }
139 } else if ((expected & 0x3ff) != 0) {
140 if (((actual & 0x7c00) != 0x7c00) || (actual & 0x3ff) == 0) {
141 System.err.println(msg);
142 return 1;
143 }
144 }
145 return 0;
146 }
147
148 @Test
149 @IR(counts = {IRNode.VECTOR_CAST_HF2F, IRNode.VECTOR_SIZE + "min(max_float, max_short)", "> 0"},
150 applyIfOr = {"UseCompactObjectHeaders", "false", "AlignVector", "false"})
151 public void test_float16_float(float[] fout, short[] sinp) {
152 for (int i = 0; i < sinp.length; i++) {
153 fout[i] = Float.float16ToFloat(sinp[i]);
154 // With AlignVector, we need 8-byte alignment of vector loads/stores.
155 // UseCompactObjectHeaders=false UseCompactObjectHeaders=true
156 // F_adr = base + 16 + 4*i -> i % 2 = 0 F_adr = base + 12 + 4*i -> i % 2 = 1
157 // S_adr = base + 16 + 2*i -> i % 4 = 0 S_adr = base + 12 + 2*i -> i % 4 = 2
158 // -> vectorize -> no vectorization
159 }
160 }
161
162 @Run(test = {"test_float16_float"}, mode = RunMode.STANDALONE)
163 public void kernel_test_float16_float() {
164 int errno = 0;
165 sinp = new short[ARRLEN];
166 fout = new float[ARRLEN];
167
168 // Setup
169 for (int i = 0; i < ARRLEN; i++) {
170 if (i%39 == 0) {
171 int x = 0x7c00 + i;
172 x = (i%2 == 0) ? x : (x | 0x8000);
173 sinp[i] = (short)x;
174 } else {
175 sinp[i] = (short)i;
176 }
177 }
178
179 int ranges[][] = {
180 {128, 64},
181 {256, 19},
182 {384-19, 19},
183 {512-19, 17},
184 {640+19, 19},
185 {768+19, 32},
186 {896-19, 32}
187 };
188 for (int range[] : ranges) {
189 int start = range[0];
190 int offset = range[1];
191 for (int i = start; i < start+offset; i++) {
192 int x = 0x7c00 + i;
193 x = (i%2 == 0) ? x : (x | 0x8000);
194 sinp[i] = (short)x;
195 }
196 }
197
198 // Test
199 for (int i = 0; i < ITERS; i++) {
200 test_float16_float(fout, sinp);
201 }
202
203 // Verifying the result
204 for (int i = 0; i < ARRLEN; i++) {
205 errno += assertEquals(i, sinp[i], Float.float16ToFloat(sinp[i]), fout[i]);
206 }
207
208 if (errno > 0) {
209 throw new RuntimeException("errors occur");
210 }
211 }
212
213 static int assertEquals(int idx, short s, float expected, float actual) {
214 String msg = "float16ToFloat wrong result: idx: " + idx + ", \t" + s +
215 ",\t expected: " + expected + ",\t" + Integer.toHexString(Float.floatToIntBits(expected)) +
216 ",\t actual: " + actual + ",\t" + Integer.toHexString(Float.floatToIntBits(actual));
217 if (!Float.isNaN(expected) || !Float.isNaN(actual)) {
218 if (expected != actual) {
219 System.err.println(msg);
220 return 1;
221 }
222 }
223 return 0;
224 }
225 }