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comparison test/compiler/intrinsics/bmi/verifycode/BmiIntrinsicBase.java @ 17868:72558bacada3

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8038953: Add sanity tests for BMI1 and LZCNT instructions Reviewed-by: kvn, iignatyev Contributed-by: anton.ivanov@oracle.com
author iignatyev
date Fri, 11 Apr 2014 00:34:51 +0400
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17867:b127b0d6de7f 17868:72558bacada3
1 /*
2 * Copyright (c) 2014, 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.
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
25 import com.oracle.java.testlibrary.Asserts;
26 import com.oracle.java.testlibrary.Platform;
27 import com.oracle.java.testlibrary.Utils;
28 import sun.hotspot.code.NMethod;
29 import sun.hotspot.cpuinfo.CPUInfo;
30
31 import java.lang.reflect.Executable;
32 import java.lang.reflect.Method;
33 import java.util.concurrent.Callable;
34 import java.util.function.Function;
35
36 public class BmiIntrinsicBase extends CompilerWhiteBoxTest {
37
38 protected BmiIntrinsicBase(BmiTestCase testCase) {
39 super(testCase);
40 }
41
42 public static void verifyTestCase(Function<Method, BmiTestCase> constructor, Method... methods) throws Exception {
43 for (Method method : methods) {
44 new BmiIntrinsicBase(constructor.apply(method)).test();
45 }
46 }
47
48 @Override
49 protected void test() throws Exception {
50 BmiTestCase bmiTestCase = (BmiTestCase) testCase;
51
52 if (!(Platform.isX86() || Platform.isX64())) {
53 System.out.println("Unsupported platform, test SKIPPED");
54 return;
55 }
56
57 if (!Platform.isServer()) {
58 System.out.println("Not server VM, test SKIPPED");
59 return;
60 }
61
62 if (!CPUInfo.hasFeature(bmiTestCase.getCpuFlag())) {
63 System.out.println("Unsupported hardware, no required CPU flag " + bmiTestCase.getCpuFlag() + " , test SKIPPED");
64 return;
65 }
66
67 if (!Boolean.valueOf(getVMOption(bmiTestCase.getVMFlag()))) {
68 System.out.println("VM flag " + bmiTestCase.getVMFlag() + " disabled, test SKIPPED");
69 return;
70 }
71
72 System.out.println(testCase.name());
73
74 switch (MODE) {
75 case "compiled mode":
76 case "mixed mode":
77 if (TIERED_COMPILATION && TIERED_STOP_AT_LEVEL != CompilerWhiteBoxTest.COMP_LEVEL_MAX) {
78 System.out.println("TieredStopAtLevel value (" + TIERED_STOP_AT_LEVEL + ") is too low, test SKIPPED");
79 return;
80 }
81 deoptimize();
82 compileAtLevelAndCheck(CompilerWhiteBoxTest.COMP_LEVEL_MAX);
83 break;
84 case "interpreted mode": // test is not applicable in this mode;
85 System.err.println("Warning: This test is not applicable in mode: " + MODE);
86 break;
87 default:
88 throw new AssertionError("Test bug, unknown VM mode: " + MODE);
89 }
90 }
91
92 protected void compileAtLevelAndCheck(int level) {
93 WHITE_BOX.enqueueMethodForCompilation(method, level);
94 waitBackgroundCompilation();
95 checkCompilation(method, level);
96 checkEmittedCode(method);
97 }
98
99 protected void checkCompilation(Executable executable, int level) {
100 if (!WHITE_BOX.isMethodCompiled(executable)) {
101 throw new AssertionError("Test bug, expected compilation (level): " + level + ", but not compiled" + WHITE_BOX.isMethodCompilable(executable, level));
102 }
103 final int compilationLevel = WHITE_BOX.getMethodCompilationLevel(executable);
104 if (compilationLevel != level) {
105 throw new AssertionError("Test bug, expected compilation (level): " + level + ", but level: " + compilationLevel);
106 }
107 }
108
109 protected void checkEmittedCode(Executable executable) {
110 final byte[] nativeCode = NMethod.get(executable, false).insts;
111 if (!((BmiTestCase) testCase).verifyPositive(nativeCode)) {
112 throw new AssertionError(testCase.name() + "CPU instructions expected not found: " + Utils.toHexString(nativeCode));
113 } else {
114 System.out.println("CPU instructions found, PASSED");
115 }
116 }
117
118 abstract static class BmiTestCase implements CompilerWhiteBoxTest.TestCase {
119 private final Method method;
120 protected byte[] instrMask;
121 protected byte[] instrPattern;
122 protected boolean isLongOperation;
123
124 public BmiTestCase(Method method) {
125 this.method = method;
126 }
127
128 @Override
129 public String name() {
130 return method.toGenericString();
131 }
132
133 @Override
134 public Executable getExecutable() {
135 return method;
136 }
137
138 @Override
139 public Callable<Integer> getCallable() {
140 return null;
141 }
142
143 @Override
144 public boolean isOsr() {
145 return false;
146 }
147
148 protected int countCpuInstructions(byte[] nativeCode) {
149 int count = 0;
150 int patternSize = Math.min(instrMask.length, instrPattern.length);
151 boolean found;
152 Asserts.assertGreaterThan(patternSize, 0);
153 for (int i = 0, n = nativeCode.length - patternSize; i < n; i++) {
154 found = true;
155 for (int j = 0; j < patternSize; j++) {
156 if ((nativeCode[i + j] & instrMask[j]) != instrPattern[j]) {
157 found = false;
158 break;
159 }
160 }
161 if (found) {
162 ++count;
163 i += patternSize - 1;
164 }
165 }
166 return count;
167 }
168
169 public boolean verifyPositive(byte[] nativeCode) {
170 final int cnt = countCpuInstructions(nativeCode);
171 if (Platform.isX86()) {
172 return cnt >= (isLongOperation ? 2 : 1);
173 } else {
174 return Platform.isX64() && cnt >= 1;
175 }
176 }
177
178 protected String getCpuFlag() {
179 return "bmi1";
180 }
181
182 protected String getVMFlag() {
183 return "UseBMI1Instructions";
184 }
185 }
186 }