1/* 2 * Copyright (c) 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 */ 23 24package org.graalvm.compiler.core.aarch64; 25 26import org.graalvm.compiler.asm.aarch64.AArch64Address; 27import org.graalvm.compiler.asm.aarch64.AArch64Address.AddressingMode; 28import org.graalvm.compiler.core.common.LIRKind; 29import org.graalvm.compiler.graph.NodeClass; 30import org.graalvm.compiler.lir.aarch64.AArch64AddressValue; 31import org.graalvm.compiler.lir.gen.LIRGeneratorTool; 32import org.graalvm.compiler.nodeinfo.NodeInfo; 33import org.graalvm.compiler.nodes.ValueNode; 34import org.graalvm.compiler.nodes.memory.address.AddressNode; 35import org.graalvm.compiler.nodes.spi.LIRLowerable; 36import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool; 37 38import jdk.vm.ci.meta.AllocatableValue; 39import jdk.vm.ci.meta.Value; 40 41/** 42 * Represents an AArch64 address in the graph. 43 */ 44@NodeInfo 45public class AArch64AddressNode extends AddressNode implements LIRLowerable { 46 47 public static final NodeClass<AArch64AddressNode> TYPE = NodeClass.create(AArch64AddressNode.class); 48 49 @OptionalInput private ValueNode base; 50 51 @OptionalInput private ValueNode index; 52 private AArch64Address.AddressingMode addressingMode; 53 54 private long displacement; 55 private int scaleFactor; 56 57 public AArch64AddressNode(ValueNode base) { 58 this(base, null); 59 } 60 61 public AArch64AddressNode(ValueNode base, ValueNode index) { 62 super(TYPE); 63 this.base = base; 64 this.index = index; 65 this.addressingMode = AddressingMode.REGISTER_OFFSET; 66 this.displacement = 0; 67 this.scaleFactor = 1; 68 } 69 70 @Override 71 public void generate(NodeLIRBuilderTool gen) { 72 LIRGeneratorTool tool = gen.getLIRGeneratorTool(); 73 74 AllocatableValue baseValue = base == null ? Value.ILLEGAL : tool.asAllocatable(gen.operand(base)); 75 AllocatableValue indexValue = index == null ? Value.ILLEGAL : tool.asAllocatable(gen.operand(index)); 76 77 AllocatableValue baseReference = LIRKind.derivedBaseFromValue(baseValue); 78 AllocatableValue indexReference; 79 if (index == null) { 80 indexReference = null; 81 } else if (addressingMode.equals(AddressingMode.IMMEDIATE_UNSCALED)) { 82 indexReference = LIRKind.derivedBaseFromValue(indexValue); 83 } else { 84 if (LIRKind.isValue(indexValue.getValueKind())) { 85 indexReference = null; 86 } else { 87 indexReference = Value.ILLEGAL; 88 } 89 } 90 91 LIRKind kind = LIRKind.combineDerived(tool.getLIRKind(stamp()), baseReference, indexReference); 92 gen.setResult(this, new AArch64AddressValue(kind, baseValue, indexValue, (int) displacement, scaleFactor, addressingMode)); 93 } 94 95 @Override 96 public ValueNode getBase() { 97 return base; 98 } 99 100 public void setBase(ValueNode base) { 101 // allow modification before inserting into the graph 102 if (isAlive()) { 103 updateUsages(this.base, base); 104 } 105 this.base = base; 106 } 107 108 @Override 109 public ValueNode getIndex() { 110 return index; 111 } 112 113 public void setIndex(ValueNode index) { 114 // allow modification before inserting into the graph 115 if (isAlive()) { 116 updateUsages(this.index, index); 117 } 118 this.index = index; 119 } 120 121 public long getDisplacement() { 122 return displacement; 123 } 124 125 public void setDisplacement(long displacement, int scaleFactor, AArch64Address.AddressingMode addressingMode) { 126 this.displacement = displacement; 127 this.scaleFactor = scaleFactor; 128 this.addressingMode = addressingMode; 129 } 130 131 @Override 132 public long getMaxConstantDisplacement() { 133 return displacement; 134 } 135 136 public AddressingMode getAddressingMode() { 137 return addressingMode; 138 } 139} 140