001/*
002 * Copyright (c) 2009, 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;
024
025import com.oracle.graal.compiler.common.type.*;
026import com.oracle.graal.graph.*;
027import com.oracle.graal.nodeinfo.*;
028import com.oracle.graal.nodes.memory.*;
029import com.oracle.graal.nodes.spi.*;
030
031@NodeInfo
032public final class ReturnNode extends ControlSinkNode implements LIRLowerable, IterableNodeType {
033
034    public static final NodeClass<ReturnNode> TYPE = NodeClass.create(ReturnNode.class);
035    @OptionalInput ValueNode result;
036    @OptionalInput(InputType.Extension) MemoryMapNode memoryMap;
037
038    public ValueNode result() {
039        return result;
040    }
041
042    public ReturnNode(ValueNode result) {
043        this(result, null);
044    }
045
046    public ReturnNode(ValueNode result, MemoryMapNode memoryMap) {
047        super(TYPE, StampFactory.forVoid());
048        this.result = result;
049        this.memoryMap = memoryMap;
050    }
051
052    @Override
053    public void generate(NodeLIRBuilderTool gen) {
054        if (this.result() == null) {
055            gen.getLIRGeneratorTool().emitReturn(null);
056        } else {
057            gen.getLIRGeneratorTool().emitReturn(gen.operand(this.result()));
058        }
059    }
060
061    public void setMemoryMap(MemoryMapNode memoryMap) {
062        updateUsages(this.memoryMap, memoryMap);
063        this.memoryMap = memoryMap;
064    }
065
066    public MemoryMapNode getMemoryMap() {
067        return memoryMap;
068    }
069}