| /* |
| * Copyright (c) 2009, 2011, 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.nodes.java; |
| |
| import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_15; |
| import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_10; |
| |
| import org.graalvm.compiler.core.common.type.Stamp; |
| import org.graalvm.compiler.graph.NodeClass; |
| import org.graalvm.compiler.nodeinfo.NodeInfo; |
| import org.graalvm.compiler.nodeinfo.Verbosity; |
| import org.graalvm.compiler.nodes.FixedWithNextNode; |
| import org.graalvm.compiler.nodes.ValueNode; |
| import org.graalvm.compiler.nodes.spi.Lowerable; |
| import org.graalvm.compiler.nodes.spi.LoweringTool; |
| |
| import jdk.vm.ci.meta.ResolvedJavaField; |
| |
| /** |
| * The base class of all instructions that access fields. |
| */ |
| @NodeInfo(cycles = CYCLES_15, size = SIZE_10) |
| public abstract class AccessFieldNode extends FixedWithNextNode implements Lowerable { |
| |
| public static final NodeClass<AccessFieldNode> TYPE = NodeClass.create(AccessFieldNode.class); |
| @OptionalInput ValueNode object; |
| |
| protected final ResolvedJavaField field; |
| |
| public ValueNode object() { |
| return object; |
| } |
| |
| /** |
| * Constructs a new access field object. |
| * |
| * @param object the instruction producing the receiver object |
| * @param field the compiler interface representation of the field |
| */ |
| public AccessFieldNode(NodeClass<? extends AccessFieldNode> c, Stamp stamp, ValueNode object, ResolvedJavaField field) { |
| super(c, stamp); |
| this.object = object; |
| this.field = field; |
| assert field.getDeclaringClass().isInitialized(); |
| } |
| |
| /** |
| * Gets the compiler interface field for this field access. |
| * |
| * @return the compiler interface field for this field access |
| */ |
| public ResolvedJavaField field() { |
| return field; |
| } |
| |
| /** |
| * Checks whether this field access is an access to a static field. |
| * |
| * @return {@code true} if this field access is to a static field |
| */ |
| public boolean isStatic() { |
| return field.isStatic(); |
| } |
| |
| /** |
| * Checks whether this field is declared volatile. |
| * |
| * @return {@code true} if the field is resolved and declared volatile |
| */ |
| public boolean isVolatile() { |
| return field.isVolatile(); |
| } |
| |
| @Override |
| public void lower(LoweringTool tool) { |
| tool.getLowerer().lower(this, tool); |
| } |
| |
| @Override |
| public String toString(Verbosity verbosity) { |
| if (verbosity == Verbosity.Name) { |
| return super.toString(verbosity) + "#" + field.getName(); |
| } else { |
| return super.toString(verbosity); |
| } |
| } |
| |
| @Override |
| public boolean verify() { |
| assertTrue((object == null) == isStatic(), "static field must not have object, instance field must have object"); |
| return super.verify(); |
| } |
| } |