author | chegar |
Mon, 18 Aug 2014 10:59:36 +0100 | |
changeset 25991 | e48157b42439 |
parent 25979 | jdk/src/share/classes/java/lang/invoke/InvokerBytecodeGenerator.java@42e5d9f8087e |
parent 25859 | jdk/src/share/classes/java/lang/invoke/InvokerBytecodeGenerator.java@3317bb8137f4 |
child 26464 | 65b37da18e06 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package java.lang.invoke; |
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|
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import sun.invoke.util.VerifyAccess; |
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import static java.lang.invoke.LambdaForm.*; |
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import sun.invoke.util.Wrapper; |
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import java.io.*; |
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import java.util.*; |
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import jdk.internal.org.objectweb.asm.*; |
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import java.lang.reflect.*; |
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import static java.lang.invoke.MethodHandleStatics.*; |
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import static java.lang.invoke.MethodHandleNatives.Constants.*; |
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import static java.lang.invoke.LambdaForm.BasicType.*; |
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import sun.invoke.util.VerifyType; |
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import sun.reflect.misc.ReflectUtil; |
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/** |
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* Code generation backend for LambdaForm. |
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* <p> |
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* @author John Rose, JSR 292 EG |
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*/ |
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class InvokerBytecodeGenerator { |
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/** Define class names for convenience. */ |
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private static final String MH = "java/lang/invoke/MethodHandle"; |
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private static final String MHI = "java/lang/invoke/MethodHandleImpl"; |
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private static final String LF = "java/lang/invoke/LambdaForm"; |
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private static final String LFN = "java/lang/invoke/LambdaForm$Name"; |
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private static final String CLS = "java/lang/Class"; |
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private static final String OBJ = "java/lang/Object"; |
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private static final String OBJARY = "[Ljava/lang/Object;"; |
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private static final String LF_SIG = "L" + LF + ";"; |
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private static final String LFN_SIG = "L" + LFN + ";"; |
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private static final String LL_SIG = "(L" + OBJ + ";)L" + OBJ + ";"; |
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private static final String CLL_SIG = "(L" + CLS + ";L" + OBJ + ";)L" + OBJ + ";"; |
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|
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/** Name of its super class*/ |
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private static final String superName = LF; |
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/** Name of new class */ |
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private final String className; |
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/** Name of the source file (for stack trace printing). */ |
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private final String sourceFile; |
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private final LambdaForm lambdaForm; |
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private final String invokerName; |
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private final MethodType invokerType; |
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private final int[] localsMap; |
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/** ASM bytecode generation. */ |
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private ClassWriter cw; |
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private MethodVisitor mv; |
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private static final MemberName.Factory MEMBERNAME_FACTORY = MemberName.getFactory(); |
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private static final Class<?> HOST_CLASS = LambdaForm.class; |
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private InvokerBytecodeGenerator(LambdaForm lambdaForm, int localsMapSize, |
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String className, String invokerName, MethodType invokerType) { |
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if (invokerName.contains(".")) { |
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int p = invokerName.indexOf('.'); |
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className = invokerName.substring(0, p); |
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invokerName = invokerName.substring(p+1); |
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} |
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if (DUMP_CLASS_FILES) { |
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className = makeDumpableClassName(className); |
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} |
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this.className = superName + "$" + className; |
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this.sourceFile = "LambdaForm$" + className; |
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this.lambdaForm = lambdaForm; |
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this.invokerName = invokerName; |
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this.invokerType = invokerType; |
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this.localsMap = new int[localsMapSize]; |
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} |
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private InvokerBytecodeGenerator(String className, String invokerName, MethodType invokerType) { |
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this(null, invokerType.parameterCount(), |
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className, invokerName, invokerType); |
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// Create an array to map name indexes to locals indexes. |
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for (int i = 0; i < localsMap.length; i++) { |
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localsMap[i] = invokerType.parameterSlotCount() - invokerType.parameterSlotDepth(i); |
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} |
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} |
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private InvokerBytecodeGenerator(String className, LambdaForm form, MethodType invokerType) { |
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this(form, form.names.length, |
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className, form.debugName, invokerType); |
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// Create an array to map name indexes to locals indexes. |
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Name[] names = form.names; |
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for (int i = 0, index = 0; i < localsMap.length; i++) { |
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localsMap[i] = index; |
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index += names[i].type.basicTypeSlots(); |
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} |
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} |
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/** instance counters for dumped classes */ |
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private final static HashMap<String,Integer> DUMP_CLASS_FILES_COUNTERS; |
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/** debugging flag for saving generated class files */ |
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private final static File DUMP_CLASS_FILES_DIR; |
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static { |
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if (DUMP_CLASS_FILES) { |
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132 |
DUMP_CLASS_FILES_COUNTERS = new HashMap<>(); |
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133 |
try { |
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134 |
File dumpDir = new File("DUMP_CLASS_FILES"); |
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135 |
if (!dumpDir.exists()) { |
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|
136 |
dumpDir.mkdirs(); |
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137 |
} |
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138 |
DUMP_CLASS_FILES_DIR = dumpDir; |
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139 |
System.out.println("Dumping class files to "+DUMP_CLASS_FILES_DIR+"/..."); |
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140 |
} catch (Exception e) { |
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141 |
throw newInternalError(e); |
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142 |
} |
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143 |
} else { |
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144 |
DUMP_CLASS_FILES_COUNTERS = null; |
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145 |
DUMP_CLASS_FILES_DIR = null; |
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146 |
} |
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147 |
} |
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148 |
|
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149 |
static void maybeDump(final String className, final byte[] classFile) { |
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150 |
if (DUMP_CLASS_FILES) { |
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151 |
System.out.println("dump: " + className); |
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152 |
java.security.AccessController.doPrivileged( |
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153 |
new java.security.PrivilegedAction<Void>() { |
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154 |
public Void run() { |
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155 |
try { |
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156 |
String dumpName = className; |
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157 |
//dumpName = dumpName.replace('/', '-'); |
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158 |
File dumpFile = new File(DUMP_CLASS_FILES_DIR, dumpName+".class"); |
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159 |
dumpFile.getParentFile().mkdirs(); |
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160 |
FileOutputStream file = new FileOutputStream(dumpFile); |
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161 |
file.write(classFile); |
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162 |
file.close(); |
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163 |
return null; |
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164 |
} catch (IOException ex) { |
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throw newInternalError(ex); |
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166 |
} |
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167 |
} |
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168 |
}); |
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169 |
} |
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170 |
|
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171 |
} |
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172 |
|
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173 |
private static String makeDumpableClassName(String className) { |
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174 |
Integer ctr; |
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175 |
synchronized (DUMP_CLASS_FILES_COUNTERS) { |
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176 |
ctr = DUMP_CLASS_FILES_COUNTERS.get(className); |
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177 |
if (ctr == null) ctr = 0; |
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178 |
DUMP_CLASS_FILES_COUNTERS.put(className, ctr+1); |
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179 |
} |
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180 |
String sfx = ctr.toString(); |
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|
181 |
while (sfx.length() < 3) |
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|
182 |
sfx = "0"+sfx; |
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|
183 |
className += sfx; |
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|
184 |
return className; |
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|
185 |
} |
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|
186 |
|
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|
187 |
class CpPatch { |
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|
188 |
final int index; |
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|
189 |
final String placeholder; |
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|
190 |
final Object value; |
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191 |
CpPatch(int index, String placeholder, Object value) { |
13423
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|
192 |
this.index = index; |
13610
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|
193 |
this.placeholder = placeholder; |
13423
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|
194 |
this.value = value; |
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|
195 |
} |
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|
196 |
public String toString() { |
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197 |
return "CpPatch/index="+index+",placeholder="+placeholder+",value="+value; |
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|
198 |
} |
13423
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|
199 |
} |
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|
200 |
|
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|
201 |
Map<Object, CpPatch> cpPatches = new HashMap<>(); |
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|
202 |
|
17843fff200d
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|
203 |
int cph = 0; // for counting constant placeholders |
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|
204 |
|
17843fff200d
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|
205 |
String constantPlaceholder(Object arg) { |
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|
206 |
String cpPlaceholder = "CONSTANT_PLACEHOLDER_" + cph++; |
17843fff200d
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|
207 |
if (DUMP_CLASS_FILES) cpPlaceholder += " <<" + arg.toString() + ">>"; // debugging aid |
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|
208 |
if (cpPatches.containsKey(cpPlaceholder)) { |
17843fff200d
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|
209 |
throw new InternalError("observed CP placeholder twice: " + cpPlaceholder); |
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|
210 |
} |
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|
211 |
// insert placeholder in CP and remember the patch |
25979 | 212 |
int index = cw.newConst((Object) cpPlaceholder); // TODO check if already in the constant pool |
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|
213 |
cpPatches.put(cpPlaceholder, new CpPatch(index, cpPlaceholder, arg)); |
13423
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|
214 |
return cpPlaceholder; |
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|
215 |
} |
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changeset
|
216 |
|
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changeset
|
217 |
Object[] cpPatches(byte[] classFile) { |
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|
218 |
int size = getConstantPoolSize(classFile); |
17843fff200d
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|
219 |
Object[] res = new Object[size]; |
17843fff200d
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|
220 |
for (CpPatch p : cpPatches.values()) { |
13610
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|
221 |
if (p.index >= size) |
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|
222 |
throw new InternalError("in cpool["+size+"]: "+p+"\n"+Arrays.toString(Arrays.copyOf(classFile, 20))); |
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|
223 |
res[p.index] = p.value; |
13423
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|
224 |
} |
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|
225 |
return res; |
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|
226 |
} |
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|
227 |
|
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|
228 |
/** |
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|
229 |
* Extract the number of constant pool entries from a given class file. |
17843fff200d
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|
230 |
* |
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|
231 |
* @param classFile the bytes of the class file in question. |
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|
232 |
* @return the number of entries in the constant pool. |
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|
233 |
*/ |
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|
234 |
private static int getConstantPoolSize(byte[] classFile) { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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|
235 |
// The first few bytes: |
17843fff200d
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|
236 |
// u4 magic; |
17843fff200d
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|
237 |
// u2 minor_version; |
17843fff200d
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|
238 |
// u2 major_version; |
17843fff200d
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changeset
|
239 |
// u2 constant_pool_count; |
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|
240 |
return ((classFile[8] & 0xFF) << 8) | (classFile[9] & 0xFF); |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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|
241 |
} |
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|
242 |
|
17843fff200d
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changeset
|
243 |
/** |
17843fff200d
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changeset
|
244 |
* Extract the MemberName of a newly-defined method. |
17843fff200d
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|
245 |
*/ |
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|
246 |
private MemberName loadMethod(byte[] classFile) { |
17843fff200d
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|
247 |
Class<?> invokerClass = loadAndInitializeInvokerClass(classFile, cpPatches(classFile)); |
17843fff200d
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|
248 |
return resolveInvokerMember(invokerClass, invokerName, invokerType); |
17843fff200d
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|
249 |
} |
17843fff200d
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changeset
|
250 |
|
17843fff200d
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changeset
|
251 |
/** |
17843fff200d
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parents:
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|
252 |
* Define a given class as anonymous class in the runtime system. |
17843fff200d
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diff
changeset
|
253 |
*/ |
17843fff200d
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|
254 |
private static Class<?> loadAndInitializeInvokerClass(byte[] classBytes, Object[] patches) { |
17843fff200d
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|
255 |
Class<?> invokerClass = UNSAFE.defineAnonymousClass(HOST_CLASS, classBytes, patches); |
17843fff200d
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|
256 |
UNSAFE.ensureClassInitialized(invokerClass); // Make sure the class is initialized; VM might complain. |
17843fff200d
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|
257 |
return invokerClass; |
17843fff200d
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diff
changeset
|
258 |
} |
17843fff200d
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changeset
|
259 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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|
260 |
private static MemberName resolveInvokerMember(Class<?> invokerClass, String name, MethodType type) { |
17843fff200d
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diff
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|
261 |
MemberName member = new MemberName(invokerClass, name, type, REF_invokeStatic); |
17843fff200d
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|
262 |
//System.out.println("resolveInvokerMember => "+member); |
17843fff200d
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|
263 |
//for (Method m : invokerClass.getDeclaredMethods()) System.out.println(" "+m); |
17843fff200d
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parents:
diff
changeset
|
264 |
try { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
265 |
member = MEMBERNAME_FACTORY.resolveOrFail(REF_invokeStatic, member, HOST_CLASS, ReflectiveOperationException.class); |
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} catch (ReflectiveOperationException e) { |
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throw newInternalError(e); |
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268 |
} |
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269 |
//System.out.println("resolveInvokerMember => "+member); |
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return member; |
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271 |
} |
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272 |
|
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273 |
/** |
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274 |
* Set up class file generation. |
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275 |
*/ |
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276 |
private void classFilePrologue() { |
23918 | 277 |
final int NOT_ACC_PUBLIC = 0; // not ACC_PUBLIC |
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278 |
cw = new ClassWriter(ClassWriter.COMPUTE_MAXS + ClassWriter.COMPUTE_FRAMES); |
23918 | 279 |
cw.visit(Opcodes.V1_8, NOT_ACC_PUBLIC + Opcodes.ACC_FINAL + Opcodes.ACC_SUPER, className, null, superName, null); |
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280 |
cw.visitSource(sourceFile, null); |
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281 |
|
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282 |
String invokerDesc = invokerType.toMethodDescriptorString(); |
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283 |
mv = cw.visitMethod(Opcodes.ACC_STATIC, invokerName, invokerDesc, null, null); |
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284 |
} |
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285 |
|
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286 |
/** |
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|
287 |
* Tear down class file generation. |
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|
288 |
*/ |
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289 |
private void classFileEpilogue() { |
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290 |
mv.visitMaxs(0, 0); |
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291 |
mv.visitEnd(); |
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|
292 |
} |
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293 |
|
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|
294 |
/* |
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295 |
* Low-level emit helpers. |
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|
296 |
*/ |
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297 |
private void emitConst(Object con) { |
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|
298 |
if (con == null) { |
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|
299 |
mv.visitInsn(Opcodes.ACONST_NULL); |
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300 |
return; |
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|
301 |
} |
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|
302 |
if (con instanceof Integer) { |
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|
303 |
emitIconstInsn((int) con); |
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|
304 |
return; |
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|
305 |
} |
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|
306 |
if (con instanceof Long) { |
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|
307 |
long x = (long) con; |
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|
308 |
if (x == (short) x) { |
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|
309 |
emitIconstInsn((int) x); |
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|
310 |
mv.visitInsn(Opcodes.I2L); |
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|
311 |
return; |
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|
312 |
} |
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|
313 |
} |
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|
314 |
if (con instanceof Float) { |
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|
315 |
float x = (float) con; |
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|
316 |
if (x == (short) x) { |
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|
317 |
emitIconstInsn((int) x); |
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|
318 |
mv.visitInsn(Opcodes.I2F); |
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|
319 |
return; |
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|
320 |
} |
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|
321 |
} |
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|
322 |
if (con instanceof Double) { |
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|
323 |
double x = (double) con; |
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|
324 |
if (x == (short) x) { |
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|
325 |
emitIconstInsn((int) x); |
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|
326 |
mv.visitInsn(Opcodes.I2D); |
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|
327 |
return; |
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|
328 |
} |
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|
329 |
} |
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|
330 |
if (con instanceof Boolean) { |
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|
331 |
emitIconstInsn((boolean) con ? 1 : 0); |
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|
332 |
return; |
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diff
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|
333 |
} |
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|
334 |
// fall through: |
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|
335 |
mv.visitLdcInsn(con); |
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|
336 |
} |
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|
337 |
|
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|
338 |
private void emitIconstInsn(int i) { |
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|
339 |
int opcode; |
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|
340 |
switch (i) { |
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|
341 |
case 0: opcode = Opcodes.ICONST_0; break; |
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|
342 |
case 1: opcode = Opcodes.ICONST_1; break; |
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|
343 |
case 2: opcode = Opcodes.ICONST_2; break; |
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|
344 |
case 3: opcode = Opcodes.ICONST_3; break; |
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|
345 |
case 4: opcode = Opcodes.ICONST_4; break; |
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|
346 |
case 5: opcode = Opcodes.ICONST_5; break; |
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|
347 |
default: |
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changeset
|
348 |
if (i == (byte) i) { |
17843fff200d
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|
349 |
mv.visitIntInsn(Opcodes.BIPUSH, i & 0xFF); |
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|
350 |
} else if (i == (short) i) { |
17843fff200d
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|
351 |
mv.visitIntInsn(Opcodes.SIPUSH, (char) i); |
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diff
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|
352 |
} else { |
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parents:
diff
changeset
|
353 |
mv.visitLdcInsn(i); |
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parents:
diff
changeset
|
354 |
} |
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diff
changeset
|
355 |
return; |
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parents:
diff
changeset
|
356 |
} |
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|
357 |
mv.visitInsn(opcode); |
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parents:
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changeset
|
358 |
} |
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|
359 |
|
17843fff200d
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|
360 |
/* |
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|
361 |
* NOTE: These load/store methods use the localsMap to find the correct index! |
17843fff200d
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|
362 |
*/ |
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|
363 |
private void emitLoadInsn(BasicType type, int index) { |
5c9e5961d21c
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|
364 |
int opcode = loadInsnOpcode(type); |
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diff
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|
365 |
mv.visitVarInsn(opcode, localsMap[index]); |
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|
366 |
} |
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|
367 |
|
5c9e5961d21c
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|
368 |
private int loadInsnOpcode(BasicType type) throws InternalError { |
13423
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|
369 |
switch (type) { |
24572
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|
370 |
case I_TYPE: return Opcodes.ILOAD; |
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|
371 |
case J_TYPE: return Opcodes.LLOAD; |
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|
372 |
case F_TYPE: return Opcodes.FLOAD; |
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|
373 |
case D_TYPE: return Opcodes.DLOAD; |
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|
374 |
case L_TYPE: return Opcodes.ALOAD; |
5c9e5961d21c
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|
375 |
default: |
5c9e5961d21c
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diff
changeset
|
376 |
throw new InternalError("unknown type: " + type); |
13423
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changeset
|
377 |
} |
17843fff200d
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twisti
parents:
diff
changeset
|
378 |
} |
17843fff200d
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parents:
diff
changeset
|
379 |
private void emitAloadInsn(int index) { |
24572
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|
380 |
emitLoadInsn(L_TYPE, index); |
5c9e5961d21c
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diff
changeset
|
381 |
} |
5c9e5961d21c
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changeset
|
382 |
|
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
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changeset
|
383 |
private void emitStoreInsn(BasicType type, int index) { |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
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diff
changeset
|
384 |
int opcode = storeInsnOpcode(type); |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
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changeset
|
385 |
mv.visitVarInsn(opcode, localsMap[index]); |
13423
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twisti
parents:
diff
changeset
|
386 |
} |
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diff
changeset
|
387 |
|
24572
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changeset
|
388 |
private int storeInsnOpcode(BasicType type) throws InternalError { |
13423
17843fff200d
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diff
changeset
|
389 |
switch (type) { |
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changeset
|
390 |
case I_TYPE: return Opcodes.ISTORE; |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
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changeset
|
391 |
case J_TYPE: return Opcodes.LSTORE; |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
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|
392 |
case F_TYPE: return Opcodes.FSTORE; |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
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changeset
|
393 |
case D_TYPE: return Opcodes.DSTORE; |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
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changeset
|
394 |
case L_TYPE: return Opcodes.ASTORE; |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
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diff
changeset
|
395 |
default: |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
396 |
throw new InternalError("unknown type: " + type); |
13423
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parents:
diff
changeset
|
397 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
398 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
399 |
private void emitAstoreInsn(int index) { |
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400 |
emitStoreInsn(L_TYPE, index); |
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|
401 |
} |
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changeset
|
402 |
|
17843fff200d
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parents:
diff
changeset
|
403 |
/** |
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parents:
diff
changeset
|
404 |
* Emit a boxing call. |
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changeset
|
405 |
* |
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|
406 |
* @param wrapper primitive type class to box. |
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changeset
|
407 |
*/ |
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|
408 |
private void emitBoxing(Wrapper wrapper) { |
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|
409 |
String owner = "java/lang/" + wrapper.wrapperType().getSimpleName(); |
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changeset
|
410 |
String name = "valueOf"; |
17843fff200d
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parents:
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changeset
|
411 |
String desc = "(" + wrapper.basicTypeChar() + ")L" + owner + ";"; |
22297 | 412 |
mv.visitMethodInsn(Opcodes.INVOKESTATIC, owner, name, desc, false); |
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|
413 |
} |
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parents:
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changeset
|
414 |
|
17843fff200d
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parents:
diff
changeset
|
415 |
/** |
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changeset
|
416 |
* Emit an unboxing call (plus preceding checkcast). |
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changeset
|
417 |
* |
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|
418 |
* @param wrapper wrapper type class to unbox. |
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|
419 |
*/ |
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|
420 |
private void emitUnboxing(Wrapper wrapper) { |
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changeset
|
421 |
String owner = "java/lang/" + wrapper.wrapperType().getSimpleName(); |
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|
422 |
String name = wrapper.primitiveSimpleName() + "Value"; |
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changeset
|
423 |
String desc = "()" + wrapper.basicTypeChar(); |
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changeset
|
424 |
mv.visitTypeInsn(Opcodes.CHECKCAST, owner); |
22297 | 425 |
mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, owner, name, desc, false); |
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|
426 |
} |
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changeset
|
427 |
|
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parents:
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changeset
|
428 |
/** |
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changeset
|
429 |
* Emit an implicit conversion. |
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changeset
|
430 |
* |
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changeset
|
431 |
* @param ptype type of value present on stack |
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changeset
|
432 |
* @param pclass type of value required on stack |
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changeset
|
433 |
*/ |
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|
434 |
private void emitImplicitConversion(BasicType ptype, Class<?> pclass) { |
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|
435 |
assert(basicType(pclass) == ptype); // boxing/unboxing handled by caller |
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|
436 |
if (pclass == ptype.basicTypeClass() && ptype != L_TYPE) |
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|
437 |
return; // nothing to do |
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|
438 |
switch (ptype) { |
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|
439 |
case L_TYPE: |
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|
440 |
if (VerifyType.isNullConversion(Object.class, pclass)) |
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|
441 |
return; |
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changeset
|
442 |
if (isStaticallyNameable(pclass)) { |
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changeset
|
443 |
mv.visitTypeInsn(Opcodes.CHECKCAST, getInternalName(pclass)); |
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|
444 |
} else { |
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changeset
|
445 |
mv.visitLdcInsn(constantPlaceholder(pclass)); |
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changeset
|
446 |
mv.visitTypeInsn(Opcodes.CHECKCAST, CLS); |
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|
447 |
mv.visitInsn(Opcodes.SWAP); |
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|
448 |
mv.visitMethodInsn(Opcodes.INVOKESTATIC, MHI, "castReference", CLL_SIG, false); |
13423
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|
449 |
if (pclass.isArray()) |
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|
450 |
mv.visitTypeInsn(Opcodes.CHECKCAST, OBJARY); |
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|
451 |
} |
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|
452 |
return; |
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|
453 |
case I_TYPE: |
13423
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changeset
|
454 |
if (!VerifyType.isNullConversion(int.class, pclass)) |
24572
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|
455 |
emitPrimCast(ptype.basicTypeWrapper(), Wrapper.forPrimitiveType(pclass)); |
13423
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changeset
|
456 |
return; |
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parents:
diff
changeset
|
457 |
} |
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changeset
|
458 |
throw new InternalError("bad implicit conversion: tc="+ptype+": "+pclass); |
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changeset
|
459 |
} |
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parents:
diff
changeset
|
460 |
|
17843fff200d
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parents:
diff
changeset
|
461 |
/** |
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changeset
|
462 |
* Emits an actual return instruction conforming to the given return type. |
17843fff200d
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twisti
parents:
diff
changeset
|
463 |
*/ |
24572
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|
464 |
private void emitReturnInsn(BasicType type) { |
13423
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parents:
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changeset
|
465 |
int opcode; |
24572
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|
466 |
switch (type) { |
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|
467 |
case I_TYPE: opcode = Opcodes.IRETURN; break; |
5c9e5961d21c
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|
468 |
case J_TYPE: opcode = Opcodes.LRETURN; break; |
5c9e5961d21c
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|
469 |
case F_TYPE: opcode = Opcodes.FRETURN; break; |
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|
470 |
case D_TYPE: opcode = Opcodes.DRETURN; break; |
5c9e5961d21c
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|
471 |
case L_TYPE: opcode = Opcodes.ARETURN; break; |
5c9e5961d21c
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|
472 |
case V_TYPE: opcode = Opcodes.RETURN; break; |
13423
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twisti
parents:
diff
changeset
|
473 |
default: |
17843fff200d
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twisti
parents:
diff
changeset
|
474 |
throw new InternalError("unknown return type: " + type); |
17843fff200d
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twisti
parents:
diff
changeset
|
475 |
} |
17843fff200d
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twisti
parents:
diff
changeset
|
476 |
mv.visitInsn(opcode); |
17843fff200d
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twisti
parents:
diff
changeset
|
477 |
} |
17843fff200d
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twisti
parents:
diff
changeset
|
478 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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parents:
diff
changeset
|
479 |
private static String getInternalName(Class<?> c) { |
17843fff200d
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twisti
parents:
diff
changeset
|
480 |
assert(VerifyAccess.isTypeVisible(c, Object.class)); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
481 |
return c.getName().replace('.', '/'); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
482 |
} |
17843fff200d
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twisti
parents:
diff
changeset
|
483 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
484 |
/** |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
485 |
* Generate customized bytecode for a given LambdaForm. |
17843fff200d
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twisti
parents:
diff
changeset
|
486 |
*/ |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
487 |
static MemberName generateCustomizedCode(LambdaForm form, MethodType invokerType) { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
488 |
InvokerBytecodeGenerator g = new InvokerBytecodeGenerator("MH", form, invokerType); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
489 |
return g.loadMethod(g.generateCustomizedCodeBytes()); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
490 |
} |
17843fff200d
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twisti
parents:
diff
changeset
|
491 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
492 |
/** |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
493 |
* Generate an invoker method for the passed {@link LambdaForm}. |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
494 |
*/ |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
495 |
private byte[] generateCustomizedCodeBytes() { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
496 |
classFilePrologue(); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
497 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
498 |
// Suppress this method in backtraces displayed to the user. |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
499 |
mv.visitAnnotation("Ljava/lang/invoke/LambdaForm$Hidden;", true); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
500 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
501 |
// Mark this method as a compiled LambdaForm |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
502 |
mv.visitAnnotation("Ljava/lang/invoke/LambdaForm$Compiled;", true); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
503 |
|
14852 | 504 |
// Force inlining of this invoker method. |
505 |
mv.visitAnnotation("Ljava/lang/invoke/ForceInline;", true); |
|
506 |
||
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
507 |
// iterate over the form's names, generating bytecode instructions for each |
17843fff200d
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twisti
parents:
diff
changeset
|
508 |
// start iterating at the first name following the arguments |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
509 |
for (int i = lambdaForm.arity; i < lambdaForm.names.length; i++) { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
510 |
Name name = lambdaForm.names[i]; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
511 |
MemberName member = name.function.member(); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
512 |
|
23038
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
513 |
if (isSelectAlternative(i)) { |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
514 |
emitSelectAlternative(name, lambdaForm.names[i + 1]); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
515 |
i++; // skip MH.invokeBasic of the selectAlternative result |
23038
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
516 |
} else if (isGuardWithCatch(i)) { |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
517 |
emitGuardWithCatch(i); |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
518 |
i = i+2; // Jump to the end of GWC idiom |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
519 |
} else if (isStaticallyInvocable(member)) { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
520 |
emitStaticInvoke(member, name); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
521 |
} else { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
522 |
emitInvoke(name); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
523 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
524 |
|
23038
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
525 |
// Update cached form name's info in case an intrinsic spanning multiple names was encountered. |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
526 |
name = lambdaForm.names[i]; |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
527 |
member = name.function.member(); |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
528 |
|
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
529 |
// store the result from evaluating to the target name in a local if required |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
530 |
// (if this is the last value, i.e., the one that is going to be returned, |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
531 |
// avoid store/load/return and just return) |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
532 |
if (i == lambdaForm.names.length - 1 && i == lambdaForm.result) { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
533 |
// return value - do nothing |
24572
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
534 |
} else if (name.type != V_TYPE) { |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
535 |
// non-void: actually assign |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
536 |
emitStoreInsn(name.type, name.index()); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
537 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
538 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
539 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
540 |
// return statement |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
541 |
emitReturn(); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
542 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
543 |
classFileEpilogue(); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
544 |
bogusMethod(lambdaForm); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
545 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
546 |
final byte[] classFile = cw.toByteArray(); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
547 |
maybeDump(className, classFile); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
548 |
return classFile; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
549 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
550 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
551 |
/** |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
552 |
* Emit an invoke for the given name. |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
553 |
*/ |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
554 |
void emitInvoke(Name name) { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
555 |
if (true) { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
556 |
// push receiver |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
557 |
MethodHandle target = name.function.resolvedHandle; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
558 |
assert(target != null) : name.exprString(); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
559 |
mv.visitLdcInsn(constantPlaceholder(target)); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
560 |
mv.visitTypeInsn(Opcodes.CHECKCAST, MH); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
561 |
} else { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
562 |
// load receiver |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
563 |
emitAloadInsn(0); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
564 |
mv.visitTypeInsn(Opcodes.CHECKCAST, MH); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
565 |
mv.visitFieldInsn(Opcodes.GETFIELD, MH, "form", LF_SIG); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
566 |
mv.visitFieldInsn(Opcodes.GETFIELD, LF, "names", LFN_SIG); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
567 |
// TODO more to come |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
568 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
569 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
570 |
// push arguments |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
571 |
for (int i = 0; i < name.arguments.length; i++) { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
572 |
emitPushArgument(name, i); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
573 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
574 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
575 |
// invocation |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
576 |
MethodType type = name.function.methodType(); |
22297 | 577 |
mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, MH, "invokeBasic", type.basicType().toMethodDescriptorString(), false); |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
578 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
579 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
580 |
static private Class<?>[] STATICALLY_INVOCABLE_PACKAGES = { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
581 |
// Sample classes from each package we are willing to bind to statically: |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
582 |
java.lang.Object.class, |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
583 |
java.util.Arrays.class, |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
584 |
sun.misc.Unsafe.class |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
585 |
//MethodHandle.class already covered |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
586 |
}; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
587 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
588 |
static boolean isStaticallyInvocable(MemberName member) { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
589 |
if (member == null) return false; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
590 |
if (member.isConstructor()) return false; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
591 |
Class<?> cls = member.getDeclaringClass(); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
592 |
if (cls.isArray() || cls.isPrimitive()) |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
593 |
return false; // FIXME |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
594 |
if (cls.isAnonymousClass() || cls.isLocalClass()) |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
595 |
return false; // inner class of some sort |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
596 |
if (cls.getClassLoader() != MethodHandle.class.getClassLoader()) |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
597 |
return false; // not on BCP |
24974
e4a51c336a52
8046903: VM anonymous class members can't be statically invocable
vlivanov
parents:
24685
diff
changeset
|
598 |
if (ReflectUtil.isVMAnonymousClass(cls)) // FIXME: switch to supported API once it is added |
e4a51c336a52
8046903: VM anonymous class members can't be statically invocable
vlivanov
parents:
24685
diff
changeset
|
599 |
return false; |
19816
4136f2a0645d
8024283: 10 nashorn tests fail with similar stack trace InternalError with cause being NoClassDefFoundError
rfield
parents:
14852
diff
changeset
|
600 |
MethodType mtype = member.getMethodOrFieldType(); |
4136f2a0645d
8024283: 10 nashorn tests fail with similar stack trace InternalError with cause being NoClassDefFoundError
rfield
parents:
14852
diff
changeset
|
601 |
if (!isStaticallyNameable(mtype.returnType())) |
4136f2a0645d
8024283: 10 nashorn tests fail with similar stack trace InternalError with cause being NoClassDefFoundError
rfield
parents:
14852
diff
changeset
|
602 |
return false; |
4136f2a0645d
8024283: 10 nashorn tests fail with similar stack trace InternalError with cause being NoClassDefFoundError
rfield
parents:
14852
diff
changeset
|
603 |
for (Class<?> ptype : mtype.parameterArray()) |
4136f2a0645d
8024283: 10 nashorn tests fail with similar stack trace InternalError with cause being NoClassDefFoundError
rfield
parents:
14852
diff
changeset
|
604 |
if (!isStaticallyNameable(ptype)) |
4136f2a0645d
8024283: 10 nashorn tests fail with similar stack trace InternalError with cause being NoClassDefFoundError
rfield
parents:
14852
diff
changeset
|
605 |
return false; |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
606 |
if (!member.isPrivate() && VerifyAccess.isSamePackage(MethodHandle.class, cls)) |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
607 |
return true; // in java.lang.invoke package |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
608 |
if (member.isPublic() && isStaticallyNameable(cls)) |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
609 |
return true; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
610 |
return false; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
611 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
612 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
613 |
static boolean isStaticallyNameable(Class<?> cls) { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
614 |
while (cls.isArray()) |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
615 |
cls = cls.getComponentType(); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
616 |
if (cls.isPrimitive()) |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
617 |
return true; // int[].class, for example |
24974
e4a51c336a52
8046903: VM anonymous class members can't be statically invocable
vlivanov
parents:
24685
diff
changeset
|
618 |
if (ReflectUtil.isVMAnonymousClass(cls)) // FIXME: switch to supported API once it is added |
e4a51c336a52
8046903: VM anonymous class members can't be statically invocable
vlivanov
parents:
24685
diff
changeset
|
619 |
return false; |
20872
8e486b70dff8
8022718: Runtime accessibility checking: protected class, if extended, should be accessible from another package
drchase
parents:
20535
diff
changeset
|
620 |
// could use VerifyAccess.isClassAccessible but the following is a safe approximation |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
621 |
if (cls.getClassLoader() != Object.class.getClassLoader()) |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
622 |
return false; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
623 |
if (VerifyAccess.isSamePackage(MethodHandle.class, cls)) |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
624 |
return true; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
625 |
if (!Modifier.isPublic(cls.getModifiers())) |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
626 |
return false; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
627 |
for (Class<?> pkgcls : STATICALLY_INVOCABLE_PACKAGES) { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
628 |
if (VerifyAccess.isSamePackage(pkgcls, cls)) |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
629 |
return true; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
630 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
631 |
return false; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
632 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
633 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
634 |
/** |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
635 |
* Emit an invoke for the given name, using the MemberName directly. |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
636 |
*/ |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
637 |
void emitStaticInvoke(MemberName member, Name name) { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
638 |
assert(member.equals(name.function.member())); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
639 |
String cname = getInternalName(member.getDeclaringClass()); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
640 |
String mname = member.getName(); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
641 |
String mtype; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
642 |
byte refKind = member.getReferenceKind(); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
643 |
if (refKind == REF_invokeSpecial) { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
644 |
// in order to pass the verifier, we need to convert this to invokevirtual in all cases |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
645 |
assert(member.canBeStaticallyBound()) : member; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
646 |
refKind = REF_invokeVirtual; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
647 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
648 |
|
22287
7bb2a658a502
8031502: JSR292: IncompatibleClassChangeError in LambdaForm for CharSequence.toString() method handle type converter
vlivanov
parents:
21618
diff
changeset
|
649 |
if (member.getDeclaringClass().isInterface() && refKind == REF_invokeVirtual) { |
7bb2a658a502
8031502: JSR292: IncompatibleClassChangeError in LambdaForm for CharSequence.toString() method handle type converter
vlivanov
parents:
21618
diff
changeset
|
650 |
// Methods from Object declared in an interface can be resolved by JVM to invokevirtual kind. |
7bb2a658a502
8031502: JSR292: IncompatibleClassChangeError in LambdaForm for CharSequence.toString() method handle type converter
vlivanov
parents:
21618
diff
changeset
|
651 |
// Need to convert it back to invokeinterface to pass verification and make the invocation works as expected. |
7bb2a658a502
8031502: JSR292: IncompatibleClassChangeError in LambdaForm for CharSequence.toString() method handle type converter
vlivanov
parents:
21618
diff
changeset
|
652 |
refKind = REF_invokeInterface; |
7bb2a658a502
8031502: JSR292: IncompatibleClassChangeError in LambdaForm for CharSequence.toString() method handle type converter
vlivanov
parents:
21618
diff
changeset
|
653 |
} |
7bb2a658a502
8031502: JSR292: IncompatibleClassChangeError in LambdaForm for CharSequence.toString() method handle type converter
vlivanov
parents:
21618
diff
changeset
|
654 |
|
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
655 |
// push arguments |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
656 |
for (int i = 0; i < name.arguments.length; i++) { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
657 |
emitPushArgument(name, i); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
658 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
659 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
660 |
// invocation |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
661 |
if (member.isMethod()) { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
662 |
mtype = member.getMethodType().toMethodDescriptorString(); |
21618
6632680b0683
8027232: Update j.l.invoke code generating class files to use ASM enhancements for invocation of non-abstract methods on ifaces
ksrini
parents:
20872
diff
changeset
|
663 |
mv.visitMethodInsn(refKindOpcode(refKind), cname, mname, mtype, |
6632680b0683
8027232: Update j.l.invoke code generating class files to use ASM enhancements for invocation of non-abstract methods on ifaces
ksrini
parents:
20872
diff
changeset
|
664 |
member.getDeclaringClass().isInterface()); |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
665 |
} else { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
666 |
mtype = MethodType.toFieldDescriptorString(member.getFieldType()); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
667 |
mv.visitFieldInsn(refKindOpcode(refKind), cname, mname, mtype); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
668 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
669 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
670 |
int refKindOpcode(byte refKind) { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
671 |
switch (refKind) { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
672 |
case REF_invokeVirtual: return Opcodes.INVOKEVIRTUAL; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
673 |
case REF_invokeStatic: return Opcodes.INVOKESTATIC; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
674 |
case REF_invokeSpecial: return Opcodes.INVOKESPECIAL; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
675 |
case REF_invokeInterface: return Opcodes.INVOKEINTERFACE; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
676 |
case REF_getField: return Opcodes.GETFIELD; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
677 |
case REF_putField: return Opcodes.PUTFIELD; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
678 |
case REF_getStatic: return Opcodes.GETSTATIC; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
679 |
case REF_putStatic: return Opcodes.PUTSTATIC; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
680 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
681 |
throw new InternalError("refKind="+refKind); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
682 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
683 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
684 |
/** |
23038
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
685 |
* Check if MemberName is a call to a method named {@code name} in class {@code declaredClass}. |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
686 |
*/ |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
687 |
private boolean memberRefersTo(MemberName member, Class<?> declaringClass, String name) { |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
688 |
return member != null && |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
689 |
member.getDeclaringClass() == declaringClass && |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
690 |
member.getName().equals(name); |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
691 |
} |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
692 |
private boolean nameRefersTo(Name name, Class<?> declaringClass, String methodName) { |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
693 |
return name.function != null && |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
694 |
memberRefersTo(name.function.member(), declaringClass, methodName); |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
695 |
} |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
696 |
|
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
697 |
/** |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
698 |
* Check if MemberName is a call to MethodHandle.invokeBasic. |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
699 |
*/ |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
700 |
private boolean isInvokeBasic(Name name) { |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
701 |
if (name.function == null) |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
702 |
return false; |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
703 |
if (name.arguments.length < 1) |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
704 |
return false; // must have MH argument |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
705 |
MemberName member = name.function.member(); |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
706 |
return memberRefersTo(member, MethodHandle.class, "invokeBasic") && |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
707 |
!member.isPublic() && !member.isStatic(); |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
708 |
} |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
709 |
|
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
710 |
/** |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
711 |
* Check if i-th name is a call to MethodHandleImpl.selectAlternative. |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
712 |
*/ |
23038
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
713 |
private boolean isSelectAlternative(int pos) { |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
714 |
// selectAlternative idiom: |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
715 |
// t_{n}:L=MethodHandleImpl.selectAlternative(...) |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
716 |
// t_{n+1}:?=MethodHandle.invokeBasic(t_{n}, ...) |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
717 |
if (pos+1 >= lambdaForm.names.length) return false; |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
718 |
Name name0 = lambdaForm.names[pos]; |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
719 |
Name name1 = lambdaForm.names[pos+1]; |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
720 |
return nameRefersTo(name0, MethodHandleImpl.class, "selectAlternative") && |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
721 |
isInvokeBasic(name1) && |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
722 |
name1.lastUseIndex(name0) == 0 && // t_{n+1}:?=MethodHandle.invokeBasic(t_{n}, ...) |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
723 |
lambdaForm.lastUseIndex(name0) == pos+1; // t_{n} is local: used only in t_{n+1} |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
724 |
} |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
725 |
|
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
726 |
/** |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
727 |
* Check if i-th name is a start of GuardWithCatch idiom. |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
728 |
*/ |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
729 |
private boolean isGuardWithCatch(int pos) { |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
730 |
// GuardWithCatch idiom: |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
731 |
// t_{n}:L=MethodHandle.invokeBasic(...) |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
732 |
// t_{n+1}:L=MethodHandleImpl.guardWithCatch(*, *, *, t_{n}); |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
733 |
// t_{n+2}:?=MethodHandle.invokeBasic(t_{n+1}) |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
734 |
if (pos+2 >= lambdaForm.names.length) return false; |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
735 |
Name name0 = lambdaForm.names[pos]; |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
736 |
Name name1 = lambdaForm.names[pos+1]; |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
737 |
Name name2 = lambdaForm.names[pos+2]; |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
738 |
return nameRefersTo(name1, MethodHandleImpl.class, "guardWithCatch") && |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
739 |
isInvokeBasic(name0) && |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
740 |
isInvokeBasic(name2) && |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
741 |
name1.lastUseIndex(name0) == 3 && // t_{n+1}:L=MethodHandleImpl.guardWithCatch(*, *, *, t_{n}); |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
742 |
lambdaForm.lastUseIndex(name0) == pos+1 && // t_{n} is local: used only in t_{n+1} |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
743 |
name2.lastUseIndex(name1) == 1 && // t_{n+2}:?=MethodHandle.invokeBasic(t_{n+1}) |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
744 |
lambdaForm.lastUseIndex(name1) == pos+2; // t_{n+1} is local: used only in t_{n+2} |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
745 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
746 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
747 |
/** |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
748 |
* Emit bytecode for the selectAlternative idiom. |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
749 |
* |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
750 |
* The pattern looks like (Cf. MethodHandleImpl.makeGuardWithTest): |
20535
cc85c8626435
8024438: JSR 292 API specification maintenance for JDK 8
jrose
parents:
19816
diff
changeset
|
751 |
* <blockquote><pre>{@code |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
752 |
* Lambda(a0:L,a1:I)=>{ |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
753 |
* t2:I=foo.test(a1:I); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
754 |
* t3:L=MethodHandleImpl.selectAlternative(t2:I,(MethodHandle(int)int),(MethodHandle(int)int)); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
755 |
* t4:I=MethodHandle.invokeBasic(t3:L,a1:I);t4:I} |
20535
cc85c8626435
8024438: JSR 292 API specification maintenance for JDK 8
jrose
parents:
19816
diff
changeset
|
756 |
* }</pre></blockquote> |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
757 |
*/ |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
758 |
private void emitSelectAlternative(Name selectAlternativeName, Name invokeBasicName) { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
759 |
Name receiver = (Name) invokeBasicName.arguments[0]; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
760 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
761 |
Label L_fallback = new Label(); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
762 |
Label L_done = new Label(); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
763 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
764 |
// load test result |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
765 |
emitPushArgument(selectAlternativeName, 0); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
766 |
mv.visitInsn(Opcodes.ICONST_1); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
767 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
768 |
// if_icmpne L_fallback |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
769 |
mv.visitJumpInsn(Opcodes.IF_ICMPNE, L_fallback); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
770 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
771 |
// invoke selectAlternativeName.arguments[1] |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
772 |
emitPushArgument(selectAlternativeName, 1); // get 2nd argument of selectAlternative |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
773 |
emitAstoreInsn(receiver.index()); // store the MH in the receiver slot |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
774 |
emitInvoke(invokeBasicName); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
775 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
776 |
// goto L_done |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
777 |
mv.visitJumpInsn(Opcodes.GOTO, L_done); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
778 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
779 |
// L_fallback: |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
780 |
mv.visitLabel(L_fallback); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
781 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
782 |
// invoke selectAlternativeName.arguments[2] |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
783 |
emitPushArgument(selectAlternativeName, 2); // get 3rd argument of selectAlternative |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
784 |
emitAstoreInsn(receiver.index()); // store the MH in the receiver slot |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
785 |
emitInvoke(invokeBasicName); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
786 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
787 |
// L_done: |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
788 |
mv.visitLabel(L_done); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
789 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
790 |
|
23038
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
791 |
/** |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
792 |
* Emit bytecode for the guardWithCatch idiom. |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
793 |
* |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
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diff
changeset
|
794 |
* The pattern looks like (Cf. MethodHandleImpl.makeGuardWithCatch): |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
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diff
changeset
|
795 |
* <blockquote><pre>{@code |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
796 |
* guardWithCatch=Lambda(a0:L,a1:L,a2:L,a3:L,a4:L,a5:L,a6:L,a7:L)=>{ |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
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parents:
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diff
changeset
|
797 |
* t8:L=MethodHandle.invokeBasic(a4:L,a6:L,a7:L); |
bb8b3b23af3a
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vlivanov
parents:
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diff
changeset
|
798 |
* t9:L=MethodHandleImpl.guardWithCatch(a1:L,a2:L,a3:L,t8:L); |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
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diff
changeset
|
799 |
* t10:I=MethodHandle.invokeBasic(a5:L,t9:L);t10:I} |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
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parents:
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diff
changeset
|
800 |
* }</pre></blockquote> |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
801 |
* |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
802 |
* It is compiled into bytecode equivalent of the following code: |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
803 |
* <blockquote><pre>{@code |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
804 |
* try { |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
805 |
* return a1.invokeBasic(a6, a7); |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
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diff
changeset
|
806 |
* } catch (Throwable e) { |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
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diff
changeset
|
807 |
* if (!a2.isInstance(e)) throw e; |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
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diff
changeset
|
808 |
* return a3.invokeBasic(ex, a6, a7); |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
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diff
changeset
|
809 |
* }} |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
810 |
*/ |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
811 |
private void emitGuardWithCatch(int pos) { |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
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diff
changeset
|
812 |
Name args = lambdaForm.names[pos]; |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
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diff
changeset
|
813 |
Name invoker = lambdaForm.names[pos+1]; |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
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diff
changeset
|
814 |
Name result = lambdaForm.names[pos+2]; |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
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diff
changeset
|
815 |
|
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
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diff
changeset
|
816 |
Label L_startBlock = new Label(); |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
817 |
Label L_endBlock = new Label(); |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
818 |
Label L_handler = new Label(); |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
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diff
changeset
|
819 |
Label L_done = new Label(); |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
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diff
changeset
|
820 |
|
bb8b3b23af3a
8027827: Improve performance of catchException combinator
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parents:
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diff
changeset
|
821 |
Class<?> returnType = result.function.resolvedHandle.type().returnType(); |
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8027827: Improve performance of catchException combinator
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diff
changeset
|
822 |
MethodType type = args.function.resolvedHandle.type() |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
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diff
changeset
|
823 |
.dropParameterTypes(0,1) |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
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diff
changeset
|
824 |
.changeReturnType(returnType); |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
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diff
changeset
|
825 |
|
bb8b3b23af3a
8027827: Improve performance of catchException combinator
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parents:
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diff
changeset
|
826 |
mv.visitTryCatchBlock(L_startBlock, L_endBlock, L_handler, "java/lang/Throwable"); |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
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diff
changeset
|
827 |
|
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
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diff
changeset
|
828 |
// Normal case |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
829 |
mv.visitLabel(L_startBlock); |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
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diff
changeset
|
830 |
// load target |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
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parents:
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diff
changeset
|
831 |
emitPushArgument(invoker, 0); |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
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diff
changeset
|
832 |
emitPushArguments(args, 1); // skip 1st argument: method handle |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
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diff
changeset
|
833 |
mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, MH, "invokeBasic", type.basicType().toMethodDescriptorString(), false); |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
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parents:
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diff
changeset
|
834 |
mv.visitLabel(L_endBlock); |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
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parents:
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diff
changeset
|
835 |
mv.visitJumpInsn(Opcodes.GOTO, L_done); |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
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diff
changeset
|
836 |
|
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
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diff
changeset
|
837 |
// Exceptional case |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
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parents:
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diff
changeset
|
838 |
mv.visitLabel(L_handler); |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
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diff
changeset
|
839 |
|
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
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diff
changeset
|
840 |
// Check exception's type |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
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parents:
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diff
changeset
|
841 |
mv.visitInsn(Opcodes.DUP); |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
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diff
changeset
|
842 |
// load exception class |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
843 |
emitPushArgument(invoker, 1); |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
844 |
mv.visitInsn(Opcodes.SWAP); |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
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changeset
|
845 |
mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Class", "isInstance", "(Ljava/lang/Object;)Z", false); |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
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parents:
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diff
changeset
|
846 |
Label L_rethrow = new Label(); |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
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parents:
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diff
changeset
|
847 |
mv.visitJumpInsn(Opcodes.IFEQ, L_rethrow); |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
848 |
|
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
849 |
// Invoke catcher |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
850 |
// load catcher |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
851 |
emitPushArgument(invoker, 2); |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
852 |
mv.visitInsn(Opcodes.SWAP); |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
853 |
emitPushArguments(args, 1); // skip 1st argument: method handle |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
854 |
MethodType catcherType = type.insertParameterTypes(0, Throwable.class); |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
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diff
changeset
|
855 |
mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, MH, "invokeBasic", catcherType.basicType().toMethodDescriptorString(), false); |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
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diff
changeset
|
856 |
mv.visitJumpInsn(Opcodes.GOTO, L_done); |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
857 |
|
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
858 |
mv.visitLabel(L_rethrow); |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
859 |
mv.visitInsn(Opcodes.ATHROW); |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
860 |
|
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
861 |
mv.visitLabel(L_done); |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
862 |
} |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
863 |
|
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
864 |
private void emitPushArguments(Name args, int start) { |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
865 |
for (int i = start; i < args.arguments.length; i++) { |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
866 |
emitPushArgument(args, i); |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
867 |
} |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
868 |
} |
bb8b3b23af3a
8027827: Improve performance of catchException combinator
vlivanov
parents:
22297
diff
changeset
|
869 |
|
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
870 |
private void emitPushArgument(Name name, int paramIndex) { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
871 |
Object arg = name.arguments[paramIndex]; |
24572
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
872 |
Class<?> ptype = name.function.methodType().parameterType(paramIndex); |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
873 |
emitPushArgument(ptype, arg); |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
874 |
} |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
875 |
|
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
876 |
private void emitPushArgument(Class<?> ptype, Object arg) { |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
877 |
BasicType bptype = basicType(ptype); |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
878 |
if (arg instanceof Name) { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
879 |
Name n = (Name) arg; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
880 |
emitLoadInsn(n.type, n.index()); |
24572
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
881 |
emitImplicitConversion(n.type, ptype); |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
882 |
} else if ((arg == null || arg instanceof String) && bptype == L_TYPE) { |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
883 |
emitConst(arg); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
884 |
} else { |
24572
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
885 |
if (Wrapper.isWrapperType(arg.getClass()) && bptype != L_TYPE) { |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
886 |
emitConst(arg); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
887 |
} else { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
888 |
mv.visitLdcInsn(constantPlaceholder(arg)); |
24572
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
889 |
emitImplicitConversion(L_TYPE, ptype); |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
890 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
891 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
892 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
893 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
894 |
/** |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
895 |
* Emits a return statement from a LF invoker. If required, the result type is cast to the correct return type. |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
896 |
*/ |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
897 |
private void emitReturn() { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
898 |
// return statement |
24572
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
899 |
Class<?> rclass = invokerType.returnType(); |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
900 |
BasicType rtype = lambdaForm.returnType(); |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
901 |
assert(rtype == basicType(rclass)); // must agree |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
902 |
if (rtype == V_TYPE) { |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
903 |
// void |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
904 |
mv.visitInsn(Opcodes.RETURN); |
24572
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
905 |
// it doesn't matter what rclass is; the JVM will discard any value |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
906 |
} else { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
907 |
LambdaForm.Name rn = lambdaForm.names[lambdaForm.result]; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
908 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
909 |
// put return value on the stack if it is not already there |
24572
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
910 |
if (lambdaForm.result != lambdaForm.names.length - 1 || |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
911 |
lambdaForm.result < lambdaForm.arity) { |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
912 |
emitLoadInsn(rn.type, lambdaForm.result); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
913 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
914 |
|
24572
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
915 |
emitImplicitConversion(rtype, rclass); |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
916 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
917 |
// generate actual return statement |
24572
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
918 |
emitReturnInsn(rtype); |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
919 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
920 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
921 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
922 |
/** |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
923 |
* Emit a type conversion bytecode casting from "from" to "to". |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
924 |
*/ |
24572
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
925 |
private void emitPrimCast(Wrapper from, Wrapper to) { |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
926 |
// Here's how. |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
927 |
// - indicates forbidden |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
928 |
// <-> indicates implicit |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
929 |
// to ----> boolean byte short char int long float double |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
930 |
// from boolean <-> - - - - - - - |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
931 |
// byte - <-> i2s i2c <-> i2l i2f i2d |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
932 |
// short - i2b <-> i2c <-> i2l i2f i2d |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
933 |
// char - i2b i2s <-> <-> i2l i2f i2d |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
934 |
// int - i2b i2s i2c <-> i2l i2f i2d |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
935 |
// long - l2i,i2b l2i,i2s l2i,i2c l2i <-> l2f l2d |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
936 |
// float - f2i,i2b f2i,i2s f2i,i2c f2i f2l <-> f2d |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
937 |
// double - d2i,i2b d2i,i2s d2i,i2c d2i d2l d2f <-> |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
938 |
if (from == to) { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
939 |
// no cast required, should be dead code anyway |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
940 |
return; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
941 |
} |
24572
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
942 |
if (from.isSubwordOrInt()) { |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
943 |
// cast from {byte,short,char,int} to anything |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
944 |
emitI2X(to); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
945 |
} else { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
946 |
// cast from {long,float,double} to anything |
24572
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
947 |
if (to.isSubwordOrInt()) { |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
948 |
// cast to {byte,short,char,int} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
949 |
emitX2I(from); |
24572
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
950 |
if (to.bitWidth() < 32) { |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
951 |
// targets other than int require another conversion |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
952 |
emitI2X(to); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
953 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
954 |
} else { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
955 |
// cast to {long,float,double} - this is verbose |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
956 |
boolean error = false; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
957 |
switch (from) { |
24572
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
958 |
case LONG: |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
959 |
switch (to) { |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
960 |
case FLOAT: mv.visitInsn(Opcodes.L2F); break; |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
961 |
case DOUBLE: mv.visitInsn(Opcodes.L2D); break; |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
962 |
default: error = true; break; |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
963 |
} |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
964 |
break; |
24572
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
965 |
case FLOAT: |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
966 |
switch (to) { |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
967 |
case LONG : mv.visitInsn(Opcodes.F2L); break; |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
968 |
case DOUBLE: mv.visitInsn(Opcodes.F2D); break; |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
969 |
default: error = true; break; |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
970 |
} |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
971 |
break; |
24572
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
972 |
case DOUBLE: |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
973 |
switch (to) { |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
974 |
case LONG : mv.visitInsn(Opcodes.D2L); break; |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
975 |
case FLOAT: mv.visitInsn(Opcodes.D2F); break; |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
976 |
default: error = true; break; |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
977 |
} |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
978 |
break; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
979 |
default: |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
980 |
error = true; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
981 |
break; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
982 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
983 |
if (error) { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
984 |
throw new IllegalStateException("unhandled prim cast: " + from + "2" + to); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
985 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
986 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
987 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
988 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
989 |
|
24572
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
990 |
private void emitI2X(Wrapper type) { |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
991 |
switch (type) { |
24572
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
992 |
case BYTE: mv.visitInsn(Opcodes.I2B); break; |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
993 |
case SHORT: mv.visitInsn(Opcodes.I2S); break; |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
994 |
case CHAR: mv.visitInsn(Opcodes.I2C); break; |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
995 |
case INT: /* naught */ break; |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
996 |
case LONG: mv.visitInsn(Opcodes.I2L); break; |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
997 |
case FLOAT: mv.visitInsn(Opcodes.I2F); break; |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
998 |
case DOUBLE: mv.visitInsn(Opcodes.I2D); break; |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
999 |
case BOOLEAN: |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1000 |
// For compatibility with ValueConversions and explicitCastArguments: |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1001 |
mv.visitInsn(Opcodes.ICONST_1); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1002 |
mv.visitInsn(Opcodes.IAND); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1003 |
break; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1004 |
default: throw new InternalError("unknown type: " + type); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1005 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1006 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1007 |
|
24572
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
1008 |
private void emitX2I(Wrapper type) { |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1009 |
switch (type) { |
24572
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
1010 |
case LONG: mv.visitInsn(Opcodes.L2I); break; |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
1011 |
case FLOAT: mv.visitInsn(Opcodes.F2I); break; |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
1012 |
case DOUBLE: mv.visitInsn(Opcodes.D2I); break; |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
1013 |
default: throw new InternalError("unknown type: " + type); |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1014 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1015 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1016 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1017 |
/** |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1018 |
* Generate bytecode for a LambdaForm.vmentry which calls interpretWithArguments. |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1019 |
*/ |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1020 |
static MemberName generateLambdaFormInterpreterEntryPoint(String sig) { |
24572
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
1021 |
assert(isValidSignature(sig)); |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
1022 |
String name = "interpret_"+signatureReturn(sig).basicTypeChar(); |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
1023 |
MethodType type = signatureType(sig); // sig includes leading argument |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
1024 |
type = type.changeParameterType(0, MethodHandle.class); |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
1025 |
InvokerBytecodeGenerator g = new InvokerBytecodeGenerator("LFI", name, type); |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1026 |
return g.loadMethod(g.generateLambdaFormInterpreterEntryPointBytes()); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1027 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1028 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1029 |
private byte[] generateLambdaFormInterpreterEntryPointBytes() { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1030 |
classFilePrologue(); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1031 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1032 |
// Suppress this method in backtraces displayed to the user. |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1033 |
mv.visitAnnotation("Ljava/lang/invoke/LambdaForm$Hidden;", true); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1034 |
|
14852 | 1035 |
// Don't inline the interpreter entry. |
1036 |
mv.visitAnnotation("Ljava/lang/invoke/DontInline;", true); |
|
1037 |
||
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1038 |
// create parameter array |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1039 |
emitIconstInsn(invokerType.parameterCount()); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1040 |
mv.visitTypeInsn(Opcodes.ANEWARRAY, "java/lang/Object"); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1041 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1042 |
// fill parameter array |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1043 |
for (int i = 0; i < invokerType.parameterCount(); i++) { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1044 |
Class<?> ptype = invokerType.parameterType(i); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1045 |
mv.visitInsn(Opcodes.DUP); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1046 |
emitIconstInsn(i); |
24572
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
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|
1047 |
emitLoadInsn(basicType(ptype), i); |
13423
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twisti
parents:
diff
changeset
|
1048 |
// box if primitive type |
17843fff200d
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twisti
parents:
diff
changeset
|
1049 |
if (ptype.isPrimitive()) { |
24572
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8037210: Get rid of char-based descriptions 'J' of basic types
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changeset
|
1050 |
emitBoxing(Wrapper.forPrimitiveType(ptype)); |
13423
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7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1051 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1052 |
mv.visitInsn(Opcodes.AASTORE); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1053 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1054 |
// invoke |
17843fff200d
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twisti
parents:
diff
changeset
|
1055 |
emitAloadInsn(0); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1056 |
mv.visitFieldInsn(Opcodes.GETFIELD, MH, "form", "Ljava/lang/invoke/LambdaForm;"); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
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changeset
|
1057 |
mv.visitInsn(Opcodes.SWAP); // swap form and array; avoid local variable |
22297 | 1058 |
mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, LF, "interpretWithArguments", "([Ljava/lang/Object;)Ljava/lang/Object;", false); |
13423
17843fff200d
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twisti
parents:
diff
changeset
|
1059 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1060 |
// maybe unbox |
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parents:
diff
changeset
|
1061 |
Class<?> rtype = invokerType.returnType(); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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parents:
diff
changeset
|
1062 |
if (rtype.isPrimitive() && rtype != void.class) { |
24572
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8037210: Get rid of char-based descriptions 'J' of basic types
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changeset
|
1063 |
emitUnboxing(Wrapper.forPrimitiveType(rtype)); |
13423
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7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1064 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1065 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1066 |
// return statement |
24572
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|
1067 |
emitReturnInsn(basicType(rtype)); |
13423
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twisti
parents:
diff
changeset
|
1068 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1069 |
classFileEpilogue(); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1070 |
bogusMethod(invokerType); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1071 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1072 |
final byte[] classFile = cw.toByteArray(); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1073 |
maybeDump(className, classFile); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1074 |
return classFile; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1075 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1076 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1077 |
/** |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1078 |
* Generate bytecode for a NamedFunction invoker. |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1079 |
*/ |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1080 |
static MemberName generateNamedFunctionInvoker(MethodTypeForm typeForm) { |
24572
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changeset
|
1081 |
MethodType invokerType = NamedFunction.INVOKER_METHOD_TYPE; |
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parents:
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|
1082 |
String invokerName = "invoke_" + shortenSignature(basicTypeSignature(typeForm.erasedType())); |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1083 |
InvokerBytecodeGenerator g = new InvokerBytecodeGenerator("NFI", invokerName, invokerType); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1084 |
return g.loadMethod(g.generateNamedFunctionInvokerImpl(typeForm)); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1085 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1086 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1087 |
private byte[] generateNamedFunctionInvokerImpl(MethodTypeForm typeForm) { |
17843fff200d
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twisti
parents:
diff
changeset
|
1088 |
MethodType dstType = typeForm.erasedType(); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1089 |
classFilePrologue(); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1090 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1091 |
// Suppress this method in backtraces displayed to the user. |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1092 |
mv.visitAnnotation("Ljava/lang/invoke/LambdaForm$Hidden;", true); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1093 |
|
14852 | 1094 |
// Force inlining of this invoker method. |
1095 |
mv.visitAnnotation("Ljava/lang/invoke/ForceInline;", true); |
|
1096 |
||
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1097 |
// Load receiver |
17843fff200d
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twisti
parents:
diff
changeset
|
1098 |
emitAloadInsn(0); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1099 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1100 |
// Load arguments from array |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1101 |
for (int i = 0; i < dstType.parameterCount(); i++) { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1102 |
emitAloadInsn(1); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1103 |
emitIconstInsn(i); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1104 |
mv.visitInsn(Opcodes.AALOAD); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1105 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1106 |
// Maybe unbox |
17843fff200d
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twisti
parents:
diff
changeset
|
1107 |
Class<?> dptype = dstType.parameterType(i); |
17843fff200d
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twisti
parents:
diff
changeset
|
1108 |
if (dptype.isPrimitive()) { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1109 |
Class<?> sptype = dstType.basicType().wrap().parameterType(i); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1110 |
Wrapper dstWrapper = Wrapper.forBasicType(dptype); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1111 |
Wrapper srcWrapper = dstWrapper.isSubwordOrInt() ? Wrapper.INT : dstWrapper; // narrow subword from int |
24572
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parents:
23918
diff
changeset
|
1112 |
emitUnboxing(srcWrapper); |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
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parents:
23918
diff
changeset
|
1113 |
emitPrimCast(srcWrapper, dstWrapper); |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1114 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1115 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1116 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1117 |
// Invoke |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1118 |
String targetDesc = dstType.basicType().toMethodDescriptorString(); |
22297 | 1119 |
mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, MH, "invokeBasic", targetDesc, false); |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1120 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1121 |
// Box primitive types |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1122 |
Class<?> rtype = dstType.returnType(); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1123 |
if (rtype != void.class && rtype.isPrimitive()) { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1124 |
Wrapper srcWrapper = Wrapper.forBasicType(rtype); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1125 |
Wrapper dstWrapper = srcWrapper.isSubwordOrInt() ? Wrapper.INT : srcWrapper; // widen subword to int |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1126 |
// boolean casts not allowed |
24572
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
1127 |
emitPrimCast(srcWrapper, dstWrapper); |
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
1128 |
emitBoxing(dstWrapper); |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1129 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1130 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1131 |
// If the return type is void we return a null reference. |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1132 |
if (rtype == void.class) { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1133 |
mv.visitInsn(Opcodes.ACONST_NULL); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1134 |
} |
24572
5c9e5961d21c
8037210: Get rid of char-based descriptions 'J' of basic types
vlivanov
parents:
23918
diff
changeset
|
1135 |
emitReturnInsn(L_TYPE); // NOTE: NamedFunction invokers always return a reference value. |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1136 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1137 |
classFileEpilogue(); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1138 |
bogusMethod(dstType); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1139 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1140 |
final byte[] classFile = cw.toByteArray(); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1141 |
maybeDump(className, classFile); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1142 |
return classFile; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1143 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1144 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1145 |
/** |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1146 |
* Emit a bogus method that just loads some string constants. This is to get the constants into the constant pool |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1147 |
* for debugging purposes. |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1148 |
*/ |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1149 |
private void bogusMethod(Object... os) { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1150 |
if (DUMP_CLASS_FILES) { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1151 |
mv = cw.visitMethod(Opcodes.ACC_STATIC, "dummy", "()V", null, null); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1152 |
for (Object o : os) { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1153 |
mv.visitLdcInsn(o.toString()); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1154 |
mv.visitInsn(Opcodes.POP); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1155 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1156 |
mv.visitInsn(Opcodes.RETURN); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1157 |
mv.visitMaxs(0, 0); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1158 |
mv.visitEnd(); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1159 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1160 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
diff
changeset
|
1161 |
} |