/*
 * Copyright (c) 2014, 2019, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
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 *
 */


package org.graalvm.compiler.nodes.extended;

import org.graalvm.compiler.core.common.type.Stamp;
import org.graalvm.compiler.core.common.type.StampFactory;
import org.graalvm.compiler.graph.NodeClass;
import org.graalvm.compiler.nodeinfo.NodeInfo;
import org.graalvm.compiler.nodes.StateSplit;
import org.graalvm.compiler.nodes.ValueNode;
import org.graalvm.compiler.nodes.memory.AbstractWriteNode;
import org.graalvm.compiler.nodes.memory.MemoryAccess;
import org.graalvm.compiler.nodes.memory.MemoryCheckpoint;
import org.graalvm.compiler.nodes.memory.address.AddressNode;
import org.graalvm.compiler.nodes.spi.Lowerable;
import org.graalvm.compiler.nodes.spi.LoweringTool;
import jdk.internal.vm.compiler.word.LocationIdentity;

import jdk.vm.ci.meta.JavaKind;

/**
 * Write a raw memory location according to Java field or array write semantics. It will perform
 * write barriers, implicit conversions and optionally oop compression.
 */
@NodeInfo(nameTemplate = "JavaWrite#{p#location/s}")
public final class JavaWriteNode extends AbstractWriteNode implements Lowerable, StateSplit, MemoryAccess, MemoryCheckpoint.Single {

    public static final NodeClass<JavaWriteNode> TYPE = NodeClass.create(JavaWriteNode.class);
    protected final JavaKind writeKind;
    protected final boolean compressible;

    public JavaWriteNode(JavaKind writeKind, AddressNode address, LocationIdentity location, ValueNode value, BarrierType barrierType, boolean compressible) {
        super(TYPE, address, location, value, barrierType);
        this.writeKind = writeKind;
        this.compressible = compressible;
    }

    @Override
    public void lower(LoweringTool tool) {
        tool.getLowerer().lower(this, tool);
    }

    @Override
    public boolean canNullCheck() {
        return true;
    }

    public JavaKind getWriteKind() {
        return writeKind;
    }

    public boolean isCompressible() {
        return compressible;
    }

    @Override
    public Stamp getAccessStamp() {
        return StampFactory.forKind(writeKind);
    }

    @Override
    public LocationIdentity getKilledLocationIdentity() {
        return getLocationIdentity();
    }
}
