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}