1 /* 2 * Copyright (c) 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.nodes.memory.address; 26 27 import org.graalvm.compiler.graph.NodeClass; 28 import org.graalvm.compiler.nodeinfo.InputType; 29 import org.graalvm.compiler.nodeinfo.NodeInfo; 30 import org.graalvm.compiler.nodes.ValueNode; 31 import org.graalvm.compiler.nodes.spi.Lowerable; 32 import org.graalvm.compiler.nodes.spi.LoweringTool; 33 34 import jdk.vm.ci.meta.JavaKind; 35 36 /** 37 * Represents an address that points to an element of a Java array. 38 */ 39 @NodeInfo(allowedUsageTypes = InputType.Association) 40 public class IndexAddressNode extends AddressNode implements Lowerable { 41 public static final NodeClass<IndexAddressNode> TYPE = NodeClass.create(IndexAddressNode.class); 42 43 @Input ValueNode array; 44 @Input ValueNode index; 45 46 private final JavaKind elementKind; 47 48 public IndexAddressNode(ValueNode array, ValueNode index, JavaKind elementKind) { 49 super(TYPE); 50 this.array = array; 51 this.index = index; 52 this.elementKind = elementKind; 53 } 54 55 @Override 56 public ValueNode getBase() { 57 return array; 58 } 59 60 public ValueNode getArray() { 61 return array; 62 } 63 64 @Override 65 public ValueNode getIndex() { 66 return index; 67 } 68 69 @Override 70 public long getMaxConstantDisplacement() { 71 return Long.MAX_VALUE; 72 } 73 74 public JavaKind getElementKind() { 75 return elementKind; 76 } 77 78 @Override 79 public void lower(LoweringTool tool) { 80 tool.getLowerer().lower(this, tool); 81 } 82 }