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 }
--- EOF ---