1 /* 2 * Copyright (c) 2013, 2015, 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; 26 27 import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_IGNORED; 28 import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_IGNORED; 29 30 import org.graalvm.compiler.core.common.type.Stamp; 31 import org.graalvm.compiler.graph.NodeClass; 32 import org.graalvm.compiler.graph.NodeInputList; 33 import org.graalvm.compiler.nodeinfo.InputType; 34 import org.graalvm.compiler.nodeinfo.NodeInfo; 35 import org.graalvm.compiler.nodes.FixedWithNextNode; 36 import org.graalvm.compiler.nodes.ValueNode; 37 import org.graalvm.compiler.nodes.ValueNodeUtil; 38 import org.graalvm.compiler.nodes.memory.MemoryAccess; 39 import org.graalvm.compiler.nodes.memory.MemoryNode; 40 import org.graalvm.compiler.nodes.spi.Lowerable; 41 import org.graalvm.compiler.nodes.spi.LoweringTool; 42 import jdk.internal.vm.compiler.word.LocationIdentity; 43 44 @NodeInfo(cycles = CYCLES_IGNORED, size = SIZE_IGNORED) 45 public class SnippetLowerableMemoryNode extends FixedWithNextNode implements Lowerable, MemoryAccess { 46 public static final NodeClass<SnippetLowerableMemoryNode> TYPE = NodeClass.create(SnippetLowerableMemoryNode.class); 47 48 public interface SnippetLowering { lower(SnippetLowerableMemoryNode node, LoweringTool tool)49 void lower(SnippetLowerableMemoryNode node, LoweringTool tool); 50 } 51 52 @Input protected NodeInputList<ValueNode> arguments; 53 @OptionalInput(InputType.Memory) protected MemoryNode lastLocationAccess; 54 private final LocationIdentity locationIdentity; 55 SnippetLowering lowering; 56 SnippetLowerableMemoryNode(SnippetLowering lowering, LocationIdentity locationIdentity, Stamp stamp, ValueNode... arguments)57 public SnippetLowerableMemoryNode(SnippetLowering lowering, LocationIdentity locationIdentity, Stamp stamp, ValueNode... arguments) { 58 super(TYPE, stamp); 59 this.arguments = new NodeInputList<>(this, arguments); 60 this.lowering = lowering; 61 this.locationIdentity = locationIdentity; 62 } 63 getArgument(int i)64 public ValueNode getArgument(int i) { 65 return arguments.get(i); 66 } 67 getArgumentCount()68 public int getArgumentCount() { 69 return arguments.size(); 70 } 71 72 @Override lower(LoweringTool tool)73 public void lower(LoweringTool tool) { 74 lowering.lower(this, tool); 75 } 76 77 @Override getLocationIdentity()78 public LocationIdentity getLocationIdentity() { 79 return locationIdentity; 80 } 81 82 @Override getLastLocationAccess()83 public MemoryNode getLastLocationAccess() { 84 return lastLocationAccess; 85 } 86 87 @Override setLastLocationAccess(MemoryNode lla)88 public void setLastLocationAccess(MemoryNode lla) { 89 updateUsages(ValueNodeUtil.asNode(lastLocationAccess), ValueNodeUtil.asNode(lla)); 90 lastLocationAccess = lla; 91 } 92 } 93