| /* |
| * Copyright (c) 2015, 2015, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package org.graalvm.compiler.core.amd64; |
| |
| import org.graalvm.compiler.asm.amd64.AMD64Address.Scale; |
| import org.graalvm.compiler.core.common.LIRKind; |
| import org.graalvm.compiler.graph.NodeClass; |
| import org.graalvm.compiler.lir.amd64.AMD64AddressValue; |
| import org.graalvm.compiler.lir.gen.LIRGeneratorTool; |
| import org.graalvm.compiler.nodeinfo.NodeInfo; |
| import org.graalvm.compiler.nodes.ValueNode; |
| import org.graalvm.compiler.nodes.memory.address.AddressNode; |
| import org.graalvm.compiler.nodes.spi.LIRLowerable; |
| import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool; |
| |
| import jdk.vm.ci.meta.AllocatableValue; |
| import jdk.vm.ci.meta.Value; |
| |
| /** |
| * Represents an address of the form [base + index*scale + displacement]. Both base and index are |
| * optional. |
| */ |
| @NodeInfo |
| public class AMD64AddressNode extends AddressNode implements LIRLowerable { |
| |
| public static final NodeClass<AMD64AddressNode> TYPE = NodeClass.create(AMD64AddressNode.class); |
| |
| @OptionalInput private ValueNode base; |
| |
| @OptionalInput private ValueNode index; |
| private Scale scale; |
| |
| private int displacement; |
| |
| public AMD64AddressNode(ValueNode base) { |
| this(base, null); |
| } |
| |
| public AMD64AddressNode(ValueNode base, ValueNode index) { |
| super(TYPE); |
| this.base = base; |
| this.index = index; |
| this.scale = Scale.Times1; |
| } |
| |
| @Override |
| public void generate(NodeLIRBuilderTool gen) { |
| LIRGeneratorTool tool = gen.getLIRGeneratorTool(); |
| |
| AllocatableValue baseValue = base == null ? Value.ILLEGAL : tool.asAllocatable(gen.operand(base)); |
| AllocatableValue indexValue = index == null ? Value.ILLEGAL : tool.asAllocatable(gen.operand(index)); |
| |
| AllocatableValue baseReference = LIRKind.derivedBaseFromValue(baseValue); |
| AllocatableValue indexReference; |
| if (scale.equals(Scale.Times1)) { |
| indexReference = LIRKind.derivedBaseFromValue(indexValue); |
| } else { |
| if (LIRKind.isValue(indexValue)) { |
| indexReference = null; |
| } else { |
| indexReference = Value.ILLEGAL; |
| } |
| } |
| |
| LIRKind kind = LIRKind.combineDerived(tool.getLIRKind(stamp()), baseReference, indexReference); |
| gen.setResult(this, new AMD64AddressValue(kind, baseValue, indexValue, scale, displacement)); |
| } |
| |
| public ValueNode getBase() { |
| return base; |
| } |
| |
| public void setBase(ValueNode base) { |
| // allow modification before inserting into the graph |
| if (isAlive()) { |
| updateUsages(this.base, base); |
| } |
| this.base = base; |
| } |
| |
| public ValueNode getIndex() { |
| return index; |
| } |
| |
| public void setIndex(ValueNode index) { |
| // allow modification before inserting into the graph |
| if (isAlive()) { |
| updateUsages(this.index, index); |
| } |
| this.index = index; |
| } |
| |
| public Scale getScale() { |
| return scale; |
| } |
| |
| public void setScale(Scale scale) { |
| this.scale = scale; |
| } |
| |
| public int getDisplacement() { |
| return displacement; |
| } |
| |
| public void setDisplacement(int displacement) { |
| this.displacement = displacement; |
| } |
| } |