1 /* 2 * Copyright (c) 2013, 2018, 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 */ 23 24 25 package org.graalvm.compiler.replacements.arraycopy; 26 27 import static jdk.internal.vm.compiler.word.LocationIdentity.any; 28 29 import org.graalvm.compiler.graph.NodeClass; 30 import org.graalvm.compiler.nodeinfo.NodeInfo; 31 import org.graalvm.compiler.nodes.NamedLocationIdentity; 32 import org.graalvm.compiler.nodes.ValueNode; 33 import org.graalvm.compiler.nodes.spi.Lowerable; 34 import org.graalvm.compiler.nodes.spi.LoweringTool; 35 import org.graalvm.compiler.replacements.nodes.BasicArrayCopyNode; 36 import jdk.internal.vm.compiler.word.LocationIdentity; 37 38 @NodeInfo 39 public final class ArrayCopyNode extends BasicArrayCopyNode implements Lowerable { 40 41 public static final NodeClass<ArrayCopyNode> TYPE = NodeClass.create(ArrayCopyNode.class); 42 43 protected final boolean forceAnyLocation; 44 45 public ArrayCopyNode(int bci, ValueNode src, ValueNode srcPos, ValueNode dst, ValueNode dstPos, ValueNode length) { 46 this(bci, src, srcPos, dst, dstPos, length, false); 47 } 48 49 public ArrayCopyNode(int bci, ValueNode src, ValueNode srcPos, ValueNode dst, ValueNode dstPos, ValueNode length, boolean forceAnyLocation) { 50 super(TYPE, src, srcPos, dst, dstPos, length, null, bci); 51 this.forceAnyLocation = forceAnyLocation; 52 if (!forceAnyLocation) { 53 elementKind = ArrayCopySnippets.Templates.selectComponentKind(this); 54 } else { 55 assert elementKind == null; 56 } 57 } 58 59 @Override 60 public LocationIdentity getLocationIdentity() { 61 if (!forceAnyLocation && elementKind == null) { 62 elementKind = ArrayCopySnippets.Templates.selectComponentKind(this); 63 } 64 if (elementKind != null) { 65 return NamedLocationIdentity.getArrayLocation(elementKind); 66 } 67 return any(); 68 } 69 70 @Override 71 public void lower(LoweringTool tool) { 72 tool.getLowerer().lower(this, tool); 73 } 74 75 public boolean killsAnyLocation() { 76 return forceAnyLocation; 77 } 78 }