001/*
002 * Copyright (c) 2009, 2011, Oracle and/or its affiliates. All rights reserved.
003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004 *
005 * This code is free software; you can redistribute it and/or modify it
006 * under the terms of the GNU General Public License version 2 only, as
007 * published by the Free Software Foundation.
008 *
009 * This code is distributed in the hope that it will be useful, but WITHOUT
010 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
011 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
012 * version 2 for more details (a copy is included in the LICENSE file that
013 * accompanied this code).
014 *
015 * You should have received a copy of the GNU General Public License version
016 * 2 along with this work; if not, write to the Free Software Foundation,
017 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
018 *
019 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
020 * or visit www.oracle.com if you need additional information or have any
021 * questions.
022 */
023package com.oracle.graal.nodes.java;
024
025import jdk.internal.jvmci.meta.*;
026
027import com.oracle.graal.compiler.common.type.*;
028import com.oracle.graal.graph.*;
029import com.oracle.graal.nodeinfo.*;
030import com.oracle.graal.nodes.*;
031import com.oracle.graal.nodes.spi.*;
032
033/**
034 * The {@code AccessIndexedNode} class is the base class of instructions that read or write elements
035 * of an array.
036 */
037@NodeInfo
038public abstract class AccessIndexedNode extends AccessArrayNode implements Lowerable {
039
040    public static final NodeClass<AccessIndexedNode> TYPE = NodeClass.create(AccessIndexedNode.class);
041    @Input protected ValueNode index;
042    protected final Kind elementKind;
043
044    public ValueNode index() {
045        return index;
046    }
047
048    /**
049     * Create an new AccessIndexedNode.
050     *
051     * @param stamp the result kind of the access
052     * @param array the instruction producing the array
053     * @param index the instruction producing the index
054     * @param elementKind the kind of the elements of the array
055     */
056    protected AccessIndexedNode(NodeClass<? extends AccessIndexedNode> c, Stamp stamp, ValueNode array, ValueNode index, Kind elementKind) {
057        super(c, stamp, array);
058        this.index = index;
059        this.elementKind = elementKind;
060    }
061
062    /**
063     * Gets the element type of the array.
064     *
065     * @return the element type
066     */
067    public Kind elementKind() {
068        return elementKind;
069    }
070
071    @Override
072    public void lower(LoweringTool tool) {
073        tool.getLowerer().lower(this, tool);
074    }
075}