ArrayCopyNode.java revision 13175:3df8ef613001
1/* 2 * Copyright (c) 2013, 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23package org.graalvm.compiler.hotspot.replacements.arraycopy; 24 25import static org.graalvm.word.LocationIdentity.any; 26 27import org.graalvm.compiler.graph.NodeClass; 28import org.graalvm.compiler.nodeinfo.NodeInfo; 29import org.graalvm.compiler.nodes.NamedLocationIdentity; 30import org.graalvm.compiler.nodes.ValueNode; 31import org.graalvm.compiler.nodes.spi.Lowerable; 32import org.graalvm.compiler.nodes.spi.LoweringTool; 33import org.graalvm.compiler.replacements.nodes.BasicArrayCopyNode; 34import org.graalvm.word.LocationIdentity; 35 36import jdk.vm.ci.meta.JavaKind; 37 38@NodeInfo 39public final class ArrayCopyNode extends BasicArrayCopyNode implements Lowerable { 40 41 public static final NodeClass<ArrayCopyNode> TYPE = NodeClass.create(ArrayCopyNode.class); 42 43 private JavaKind elementKind; 44 45 public ArrayCopyNode(int bci, ValueNode src, ValueNode srcPos, ValueNode dst, ValueNode dstPos, ValueNode length) { 46 super(TYPE, src, srcPos, dst, dstPos, length, null, bci); 47 elementKind = ArrayCopySnippets.Templates.selectComponentKind(this); 48 } 49 50 @Override 51 public LocationIdentity getLocationIdentity() { 52 if (elementKind == null) { 53 elementKind = ArrayCopySnippets.Templates.selectComponentKind(this); 54 } 55 if (elementKind != null) { 56 return NamedLocationIdentity.getArrayLocation(elementKind); 57 } 58 return any(); 59 } 60 61 @Override 62 public void lower(LoweringTool tool) { 63 tool.getLowerer().lower(this, tool); 64 } 65} 66