| /* |
| * Copyright (c) 2012, 2015, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| package org.graalvm.compiler.word; |
| |
| import org.graalvm.compiler.bytecode.BridgeMethodUtils; |
| import org.graalvm.compiler.core.common.type.Stamp; |
| import org.graalvm.compiler.core.common.type.StampFactory; |
| import org.graalvm.compiler.nodes.ValueNode; |
| import org.graalvm.compiler.nodes.type.StampTool; |
| import org.graalvm.compiler.word.Word.Operation; |
| |
| import jdk.vm.ci.meta.JavaKind; |
| import jdk.vm.ci.meta.JavaType; |
| import jdk.vm.ci.meta.MetaAccessProvider; |
| import jdk.vm.ci.meta.ResolvedJavaMethod; |
| import jdk.vm.ci.meta.ResolvedJavaType; |
| |
| /** |
| * Encapsulates information for Java types representing raw words (as opposed to Objects). |
| */ |
| public class WordTypes { |
| |
| /** |
| * Resolved type for {@link WordBase}. |
| */ |
| private final ResolvedJavaType wordBaseType; |
| |
| /** |
| * Resolved type for {@link Word}. |
| */ |
| private final ResolvedJavaType wordImplType; |
| |
| /** |
| * Resolved type for {@link ObjectAccess}. |
| */ |
| private final ResolvedJavaType objectAccessType; |
| |
| /** |
| * Resolved type for {@link BarrieredAccess}. |
| */ |
| private final ResolvedJavaType barrieredAccessType; |
| |
| private final JavaKind wordKind; |
| |
| public WordTypes(MetaAccessProvider metaAccess, JavaKind wordKind) { |
| this.wordKind = wordKind; |
| this.wordBaseType = metaAccess.lookupJavaType(WordBase.class); |
| this.wordImplType = metaAccess.lookupJavaType(Word.class); |
| this.objectAccessType = metaAccess.lookupJavaType(ObjectAccess.class); |
| this.barrieredAccessType = metaAccess.lookupJavaType(BarrieredAccess.class); |
| } |
| |
| /** |
| * Determines if a given method denotes a word operation. |
| */ |
| public boolean isWordOperation(ResolvedJavaMethod targetMethod) { |
| final boolean isObjectAccess = objectAccessType.equals(targetMethod.getDeclaringClass()); |
| final boolean isBarrieredAccess = barrieredAccessType.equals(targetMethod.getDeclaringClass()); |
| if (isObjectAccess || isBarrieredAccess) { |
| assert targetMethod.getAnnotation(Operation.class) != null : targetMethod + " should be annotated with @" + Operation.class.getSimpleName(); |
| return true; |
| } |
| return isWord(targetMethod.getDeclaringClass()); |
| } |
| |
| /** |
| * Gets the method annotated with {@link Operation} based on a given method that represents a |
| * word operation (but may not necessarily have the annotation). |
| * |
| * @param callingContextType the {@linkplain ResolvedJavaType type} from which |
| * {@code targetMethod} is invoked |
| * @return the {@link Operation} method resolved for {@code targetMethod} if any |
| */ |
| public ResolvedJavaMethod getWordOperation(ResolvedJavaMethod targetMethod, ResolvedJavaType callingContextType) { |
| final boolean isWordBase = wordBaseType.isAssignableFrom(targetMethod.getDeclaringClass()); |
| ResolvedJavaMethod wordMethod = targetMethod; |
| if (isWordBase && !targetMethod.isStatic()) { |
| assert wordImplType.isLinked(); |
| wordMethod = wordImplType.resolveConcreteMethod(targetMethod, callingContextType); |
| } |
| assert wordMethod != null : targetMethod; |
| assert BridgeMethodUtils.getAnnotation(Operation.class, wordMethod) != null; |
| return wordMethod; |
| } |
| |
| /** |
| * Determines if a given node has a word type. |
| */ |
| public boolean isWord(ValueNode node) { |
| return isWord(StampTool.typeOrNull(node)); |
| } |
| |
| /** |
| * Determines if a given type is a word type. |
| */ |
| public boolean isWord(JavaType type) { |
| return type instanceof ResolvedJavaType && wordBaseType.isAssignableFrom((ResolvedJavaType) type); |
| } |
| |
| /** |
| * Gets the kind for a given type, returning the {@linkplain #getWordKind() word kind} if |
| * {@code type} is a {@linkplain #isWord(JavaType) word type}. |
| */ |
| public JavaKind asKind(JavaType type) { |
| if (isWord(type)) { |
| return wordKind; |
| } else { |
| return type.getJavaKind(); |
| } |
| } |
| |
| public JavaKind getWordKind() { |
| return wordKind; |
| } |
| |
| /** |
| * Gets the stamp for a given {@linkplain #isWord(JavaType) word type}. |
| */ |
| public Stamp getWordStamp(ResolvedJavaType type) { |
| assert isWord(type); |
| return StampFactory.forKind(wordKind); |
| } |
| |
| public ResolvedJavaType getWordImplType() { |
| return wordImplType; |
| } |
| } |