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 24 25 26 package org.graalvm.compiler.core.aarch64; 27 28 import org.graalvm.compiler.asm.aarch64.AArch64Address; 29 import org.graalvm.compiler.asm.aarch64.AArch64Address.AddressingMode; 30 import org.graalvm.compiler.core.common.LIRKind; 31 import org.graalvm.compiler.graph.NodeClass; 32 import org.graalvm.compiler.lir.aarch64.AArch64AddressValue; 33 import org.graalvm.compiler.lir.gen.LIRGeneratorTool; 34 import org.graalvm.compiler.nodeinfo.NodeInfo; 35 import org.graalvm.compiler.nodes.NodeView; 36 import org.graalvm.compiler.nodes.ValueNode; 37 import org.graalvm.compiler.nodes.memory.address.AddressNode; 38 import org.graalvm.compiler.nodes.spi.LIRLowerable; 39 import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool; 40 41 import jdk.vm.ci.meta.AllocatableValue; 42 import jdk.vm.ci.meta.Value; 43 44 /** 45 * Represents an AArch64 address in the graph. 46 */ 47 @NodeInfo 48 public class AArch64AddressNode extends AddressNode implements LIRLowerable { 49 50 public static final NodeClass<AArch64AddressNode> TYPE = NodeClass.create(AArch64AddressNode.class); 51 52 @OptionalInput private ValueNode base; 53 54 @OptionalInput private ValueNode index; 55 private AArch64Address.AddressingMode addressingMode; 56 57 private long displacement; 58 private int scaleFactor; 59 60 public AArch64AddressNode(ValueNode base) { 61 this(base, null); 62 } 63 64 public AArch64AddressNode(ValueNode base, ValueNode index) { 65 super(TYPE); 66 this.base = base; 67 this.index = index; 68 this.addressingMode = AddressingMode.REGISTER_OFFSET; 69 this.displacement = 0; 70 this.scaleFactor = 1; 71 } 72 73 @Override 74 public void generate(NodeLIRBuilderTool gen) { 75 LIRGeneratorTool tool = gen.getLIRGeneratorTool(); 76 77 AllocatableValue baseValue = base == null ? Value.ILLEGAL : tool.asAllocatable(gen.operand(base)); 78 AllocatableValue indexValue = index == null ? Value.ILLEGAL : tool.asAllocatable(gen.operand(index)); 79 80 AllocatableValue baseReference = LIRKind.derivedBaseFromValue(baseValue); 81 AllocatableValue indexReference; 82 if (index == null) { 83 indexReference = null; 84 } else if (addressingMode.equals(AddressingMode.IMMEDIATE_UNSCALED)) { 85 indexReference = LIRKind.derivedBaseFromValue(indexValue); 86 } else { 87 if (LIRKind.isValue(indexValue.getValueKind())) { 88 indexReference = null; 89 } else { 90 indexReference = Value.ILLEGAL; 91 } 92 } 93 94 LIRKind kind = LIRKind.combineDerived(tool.getLIRKind(stamp(NodeView.DEFAULT)), baseReference, indexReference); 95 gen.setResult(this, new AArch64AddressValue(kind, baseValue, indexValue, (int) displacement, scaleFactor, addressingMode)); 96 } 97 98 @Override 99 public ValueNode getBase() { 100 return base; 101 } 102 103 public void setBase(ValueNode base) { 104 // allow modification before inserting into the graph 105 if (isAlive()) { 106 updateUsages(this.base, base); 107 } 108 this.base = base; 109 } 110 111 @Override 112 public ValueNode getIndex() { 113 return index; 114 } 115 116 public void setIndex(ValueNode index) { 117 // allow modification before inserting into the graph 118 if (isAlive()) { 119 updateUsages(this.index, index); 120 } 121 this.index = index; 122 } 123 124 public long getDisplacement() { 125 return displacement; 126 } 127 128 public void setDisplacement(long displacement, int scaleFactor, AArch64Address.AddressingMode addressingMode) { 129 this.displacement = displacement; 130 this.scaleFactor = scaleFactor; 131 this.addressingMode = addressingMode; 132 } 133 134 @Override 135 public long getMaxConstantDisplacement() { 136 return displacement; 137 } 138 139 public AddressingMode getAddressingMode() { 140 return addressingMode; 141 } 142 }