001/*
002 * Copyright (c) 2015, 2015, 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.hotspot.replacements.arraycopy;
024
025import static jdk.internal.jvmci.meta.LocationIdentity.*;
026import jdk.internal.jvmci.meta.*;
027
028import com.oracle.graal.compiler.common.type.*;
029import com.oracle.graal.graph.*;
030import com.oracle.graal.nodeinfo.*;
031import com.oracle.graal.nodes.*;
032import com.oracle.graal.nodes.extended.*;
033import com.oracle.graal.nodes.memory.*;
034import com.oracle.graal.nodes.spi.*;
035
036@NodeInfo
037public class ArrayCopyUnrollNode extends ArrayRangeWriteNode implements MemoryCheckpoint.Single, Lowerable, MemoryAccess {
038
039    public static final NodeClass<ArrayCopyUnrollNode> TYPE = NodeClass.create(ArrayCopyUnrollNode.class);
040
041    @Input protected ValueNode src;
042    @Input protected ValueNode srcPos;
043    @Input protected ValueNode dest;
044    @Input protected ValueNode destPos;
045    @Input protected ValueNode length;
046
047    private Kind elementKind;
048
049    private int unrolledLength;
050
051    @OptionalInput(InputType.Memory) private MemoryNode lastLocationAccess;
052
053    public ArrayCopyUnrollNode(ValueNode src, ValueNode srcPos, ValueNode dest, ValueNode destPos, ValueNode length, int unrolledLength, Kind elementKind) {
054        super(TYPE, StampFactory.forKind(Kind.Void));
055        this.src = src;
056        this.srcPos = srcPos;
057        this.dest = dest;
058        this.destPos = destPos;
059        this.length = length;
060        this.unrolledLength = unrolledLength;
061        assert elementKind != null && elementKind != Kind.Illegal;
062        this.elementKind = elementKind;
063    }
064
065    public ValueNode getSource() {
066        return src;
067    }
068
069    public ValueNode getSourcePosition() {
070        return srcPos;
071    }
072
073    public ValueNode getDestination() {
074        return dest;
075    }
076
077    public ValueNode getDestinationPosition() {
078        return destPos;
079    }
080
081    @Override
082    public ValueNode getLength() {
083        return length;
084    }
085
086    @Override
087    public ValueNode getArray() {
088        return dest;
089    }
090
091    @Override
092    public ValueNode getIndex() {
093        return destPos;
094    }
095
096    @Override
097    public boolean isObjectArray() {
098        return elementKind == Kind.Object;
099    }
100
101    @Override
102    public boolean isInitialization() {
103        return false;
104    }
105
106    @NodeIntrinsic
107    public static native void arraycopy(Object nonNullSrc, int srcPos, Object nonNullDest, int destPos, int length, @ConstantNodeParameter int unrolledLength, @ConstantNodeParameter Kind elementKind);
108
109    public int getUnrollLength() {
110        return unrolledLength;
111    }
112
113    public Kind getElementKind() {
114        return elementKind;
115    }
116
117    @Override
118    public LocationIdentity getLocationIdentity() {
119        if (elementKind != null) {
120            return NamedLocationIdentity.getArrayLocation(elementKind);
121        }
122        return any();
123    }
124
125    @Override
126    public void lower(LoweringTool tool) {
127        tool.getLowerer().lower(this, tool);
128    }
129
130    public MemoryNode getLastLocationAccess() {
131        return lastLocationAccess;
132    }
133
134    public void setLastLocationAccess(MemoryNode lla) {
135        updateUsagesInterface(lastLocationAccess, lla);
136        lastLocationAccess = lla;
137    }
138}