/*
 * Copyright (c) 2014, 2020, 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.
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package org.graalvm.compiler.nodes.extended;

import org.graalvm.compiler.core.common.type.Stamp;
import org.graalvm.compiler.graph.NodeClass;
import org.graalvm.compiler.nodeinfo.NodeInfo;
import org.graalvm.compiler.nodes.NodeView;
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.SingleMemoryKill;
import org.graalvm.compiler.nodes.memory.address.AddressNode;
import org.graalvm.compiler.nodes.spi.Lowerable;
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.
/** * 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, SingleMemoryKill { public static final NodeClass<JavaWriteNode> TYPE = NodeClass.create(JavaWriteNode.class); protected final JavaKind writeKind; protected final boolean compressible; protected final boolean hasSideEffect; public JavaWriteNode(JavaKind writeKind, AddressNode address, LocationIdentity location, ValueNode value, BarrierType barrierType, boolean compressible, boolean hasSideEffect) { super(TYPE, address, location, value, barrierType); this.writeKind = writeKind; this.compressible = compressible; this.hasSideEffect = hasSideEffect; } 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; this.hasSideEffect = true; } @Override public boolean canNullCheck() { return true; } public JavaKind getWriteKind() { return writeKind; } public boolean isCompressible() { return compressible; } @Override public LocationIdentity getKilledLocationIdentity() { return getLocationIdentity(); } @Override public Stamp getAccessStamp(NodeView view) { return value().stamp(view); } @Override public boolean hasSideEffect() { return hasSideEffect; } }