1/* 2 * Copyright (c) 2015, 2016, 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 * @test 26 * @bug 8138651 27 * @modules java.base/jdk.internal.misc 28 * @library /test/lib / 29 * 30 * @build sun.hotspot.WhiteBox 31 * @run driver ClassFileInstaller sun.hotspot.WhiteBox 32 * sun.hotspot.WhiteBox$WhiteBoxPermission 33 * @run main/othervm -Xbootclasspath/a:. 34 * -XX:+UnlockDiagnosticVMOptions 35 * -XX:+WhiteBoxAPI 36 * -XX:DisableIntrinsic=_putCharVolatile,_putInt 37 * -XX:DisableIntrinsic=_putIntVolatile 38 * -XX:CompileCommand=option,jdk.internal.misc.Unsafe::putChar,ccstrlist,DisableIntrinsic,_getCharVolatile,_getInt 39 * -XX:CompileCommand=option,jdk.internal.misc.Unsafe::putCharVolatile,ccstrlist,DisableIntrinsic,_getIntVolatile 40 * compiler.intrinsics.IntrinsicDisabledTest 41 */ 42 43package compiler.intrinsics; 44 45import jdk.test.lib.Platform; 46import sun.hotspot.WhiteBox; 47import compiler.whitebox.CompilerWhiteBoxTest; 48 49import java.lang.reflect.Executable; 50import java.util.Objects; 51 52public class IntrinsicDisabledTest { 53 54 private static final WhiteBox wb = WhiteBox.getWhiteBox(); 55 56 /* Determine if tiered compilation is enabled. */ 57 private static final boolean TIERED_COMPILATION = wb.getBooleanVMFlag("TieredCompilation"); 58 59 private static final int TIERED_STOP_AT_LEVEL = wb.getIntxVMFlag("TieredStopAtLevel").intValue(); 60 61 /* This test uses several methods from jdk.internal.misc.Unsafe. The method 62 * getMethod() returns a different Executable for each different 63 * combination of its input parameters. There are eight possible 64 * combinations, getMethod can return an Executable representing 65 * the following methods: putChar, putCharVolatile, getChar, 66 * getCharVolatile, putInt, putIntVolatile, getInt, 67 * getIntVolatile. These methods were selected because they can 68 * be intrinsified by both the C1 and the C2 compiler. 69 */ 70 static Executable getMethod(boolean isChar, boolean isPut, boolean isVolatile) throws RuntimeException { 71 Executable aMethod; 72 String methodTypeName = isChar ? "Char" : "Int"; 73 74 try { 75 Class aClass = Class.forName("jdk.internal.misc.Unsafe"); 76 if (isPut) { 77 aMethod = aClass.getDeclaredMethod("put" + methodTypeName + (isVolatile ? "Volatile" : ""), 78 Object.class, 79 long.class, 80 isChar ? char.class : int.class); 81 } else { 82 aMethod = aClass.getDeclaredMethod("get" + methodTypeName + (isVolatile ? "Volatile" : ""), 83 Object.class, 84 long.class); 85 } 86 } catch (NoSuchMethodException e) { 87 throw new RuntimeException("Test bug, method is unavailable. " + e); 88 } catch (ClassNotFoundException e) { 89 throw new RuntimeException("Test bug, class is unavailable. " + e); 90 } 91 92 return aMethod; 93 } 94 95 public static void test(int compLevel) { 96 97 Executable putChar = getMethod(true, /*isPut =*/ true, /*isVolatile = */ false); 98 Executable getChar = getMethod(true, /*isPut =*/ false, /*isVolatile = */ false); 99 Executable putCharVolatile = getMethod(true, /*isPut =*/ true, /*isVolatile = */ true); 100 Executable getCharVolatile = getMethod(true, /*isPut =*/ false, /*isVolatile = */ true); 101 Executable putInt = getMethod(false, /*isPut =*/ true, /*isVolatile = */ false); 102 Executable getInt = getMethod(false, /*isPut =*/ false, /*isVolatile = */ false); 103 Executable putIntVolatile = getMethod(false, /*isPut =*/ true, /*isVolatile = */ true); 104 Executable getIntVolatile = getMethod(false, /*isPut =*/ false, /*isVolatile = */ true); 105 106 /* Test if globally disabling intrinsics works. */ 107 if (!wb.isIntrinsicAvailable(putChar, compLevel)) { 108 throw new RuntimeException("Intrinsic for [" + putChar.toGenericString() + 109 "] is not available globally although it should be."); 110 } 111 112 if (wb.isIntrinsicAvailable(putCharVolatile, compLevel)) { 113 throw new RuntimeException("Intrinsic for [" + putCharVolatile.toGenericString() + 114 "] is available globally although it should not be."); 115 } 116 117 if (wb.isIntrinsicAvailable(putInt, compLevel)) { 118 throw new RuntimeException("Intrinsic for [" + putInt.toGenericString() + 119 "] is available globally although it should not be."); 120 } 121 122 if (wb.isIntrinsicAvailable(putIntVolatile, compLevel)) { 123 throw new RuntimeException("Intrinsic for [" + putIntVolatile.toGenericString() + 124 "] is available globally although it should not be."); 125 } 126 127 /* Test if disabling intrinsics on a per-method level 128 * works. The method for which intrinsics are 129 * disabled (the compilation context) is putChar. */ 130 if (!wb.isIntrinsicAvailable(getChar, putChar, compLevel)) { 131 throw new RuntimeException("Intrinsic for [" + getChar.toGenericString() + 132 "] is not available for intrinsification in [" + 133 putChar.toGenericString() + "] although it should be."); 134 } 135 136 if (wb.isIntrinsicAvailable(getCharVolatile, putChar, compLevel)) { 137 throw new RuntimeException("Intrinsic for [" + getCharVolatile.toGenericString() + 138 "] is available for intrinsification in [" + 139 putChar.toGenericString() + "] although it should not be."); 140 } 141 142 if (wb.isIntrinsicAvailable(getInt, putChar, compLevel)) { 143 throw new RuntimeException("Intrinsic for [" + getInt.toGenericString() + 144 "] is available for intrinsification in [" + 145 putChar.toGenericString() + "] although it should not be."); 146 } 147 148 if (wb.isIntrinsicAvailable(getIntVolatile, putCharVolatile, compLevel)) { 149 throw new RuntimeException("Intrinsic for [" + getIntVolatile.toGenericString() + 150 "] is available for intrinsification in [" + 151 putCharVolatile.toGenericString() + "] although it should not be."); 152 } 153 154 /* Test if disabling intrinsics on a per-method level 155 * leaves those intrinsics enabled globally. */ 156 if (!wb.isIntrinsicAvailable(getCharVolatile, compLevel)) { 157 throw new RuntimeException("Intrinsic for [" + getCharVolatile.toGenericString() + 158 "] is not available globally although it should be."); 159 } 160 161 if (!wb.isIntrinsicAvailable(getInt, compLevel)) { 162 throw new RuntimeException("Intrinsic for [" + getInt.toGenericString() + 163 "] is not available globally although it should be."); 164 } 165 166 167 if (!wb.isIntrinsicAvailable(getIntVolatile, compLevel)) { 168 throw new RuntimeException("Intrinsic for [" + getIntVolatile.toGenericString() + 169 "] is not available globally although it should be."); 170 } 171 172 /* Test if disabling an intrinsic globally disables it on a 173 * per-method level as well. */ 174 if (!wb.isIntrinsicAvailable(putChar, getChar, compLevel)) { 175 throw new RuntimeException("Intrinsic for [" + putChar.toGenericString() + 176 "] is not available for intrinsification in [" + 177 getChar.toGenericString() + "] although it should be."); 178 } 179 180 if (wb.isIntrinsicAvailable(putCharVolatile, getChar, compLevel)) { 181 throw new RuntimeException("Intrinsic for [" + putCharVolatile.toGenericString() + 182 "] is available for intrinsification in [" + 183 getChar.toGenericString() + "] although it should not be."); 184 } 185 186 if (wb.isIntrinsicAvailable(putInt, getChar, compLevel)) { 187 throw new RuntimeException("Intrinsic for [" + putInt.toGenericString() + 188 "] is available for intrinsification in [" + 189 getChar.toGenericString() + "] although it should not be."); 190 } 191 192 if (wb.isIntrinsicAvailable(putIntVolatile, getChar, compLevel)) { 193 throw new RuntimeException("Intrinsic for [" + putIntVolatile.toGenericString() + 194 "] is available for intrinsification in [" + 195 getChar.toGenericString() + "] although it should not be."); 196 } 197 } 198 199 public static void main(String args[]) { 200 if (Platform.isServer() && !Platform.isEmulatedClient() && 201 (TIERED_STOP_AT_LEVEL == CompilerWhiteBoxTest.COMP_LEVEL_FULL_OPTIMIZATION)) { 202 if (TIERED_COMPILATION) { 203 test(CompilerWhiteBoxTest.COMP_LEVEL_SIMPLE); 204 } 205 test(CompilerWhiteBoxTest.COMP_LEVEL_FULL_OPTIMIZATION); 206 } else { 207 test(CompilerWhiteBoxTest.COMP_LEVEL_SIMPLE); 208 } 209 } 210} 211