001/*
002 * Copyright (c) 2014, 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.nodes.extended;
024
025import jdk.internal.jvmci.meta.*;
026
027import com.oracle.graal.graph.*;
028import com.oracle.graal.nodeinfo.*;
029import com.oracle.graal.nodes.*;
030import com.oracle.graal.nodes.memory.*;
031import com.oracle.graal.nodes.memory.address.*;
032import com.oracle.graal.nodes.spi.*;
033
034/**
035 * Write a raw memory location according to Java field or array write semantics. It will perform
036 * write barriers, implicit conversions and optionally oop compression.
037 */
038@NodeInfo(nameTemplate = "JavaWrite#{p#location/s}")
039public final class JavaWriteNode extends AbstractWriteNode implements Lowerable, StateSplit, MemoryAccess, MemoryCheckpoint.Single {
040
041    public static final NodeClass<JavaWriteNode> TYPE = NodeClass.create(JavaWriteNode.class);
042    protected final Kind writeKind;
043    protected final boolean compressible;
044
045    public JavaWriteNode(Kind writeKind, AddressNode address, LocationIdentity location, ValueNode value, BarrierType barrierType, boolean compressible, boolean initialization) {
046        super(TYPE, address, location, value, barrierType, initialization);
047        this.writeKind = writeKind;
048        this.compressible = compressible;
049    }
050
051    public void lower(LoweringTool tool) {
052        tool.getLowerer().lower(this, tool);
053    }
054
055    public boolean canNullCheck() {
056        return true;
057    }
058
059    public Kind getWriteKind() {
060        return writeKind;
061    }
062
063    public boolean isCompressible() {
064        return compressible;
065    }
066}