Mercurial > hg > graal-compiler
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/IndexedLocationNode.java @ 10049:ec8dd267d882
public constructor for IndexedLocationNode
author | Lukas Stadler <lukas.stadler@jku.at> |
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date | Fri, 14 Jun 2013 16:27:26 +0200 |
parents | ae5cd887e67c |
children | 9a747d8e0d0f |
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/* * Copyright (c) 2011, 2012, 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 com.oracle.graal.nodes.extended; import com.oracle.graal.api.meta.*; import com.oracle.graal.graph.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.spi.*; import com.oracle.graal.nodes.type.*; /** * Location node that has a displacement and a scaled index. Can represent locations in the form of * [base + index * scale + disp] where base and index are nodes and scale and disp are integer * constants. */ @NodeInfo(nameTemplate = "IdxLoc {p#locationIdentity/s}") public final class IndexedLocationNode extends LocationNode implements Canonicalizable { private final Kind valueKind; private final LocationIdentity locationIdentity; private final long displacement; @Input private ValueNode index; private final int indexScaling; /** * Gets the index or offset of this location. */ public ValueNode getIndex() { return index; } public long getDisplacement() { return displacement; } /** * @return Constant that is used to scale the index. */ public int getIndexScaling() { return indexScaling; } public static IndexedLocationNode create(LocationIdentity identity, Kind kind, long displacement, ValueNode index, Graph graph, int indexScaling) { return graph.unique(new IndexedLocationNode(identity, kind, displacement, index, indexScaling)); } public IndexedLocationNode(LocationIdentity identity, Kind kind, long displacement, ValueNode index, int indexScaling) { super(StampFactory.extension()); assert kind != Kind.Illegal && kind != Kind.Void; this.valueKind = kind; this.locationIdentity = identity; this.index = index; this.displacement = displacement; this.indexScaling = indexScaling; } @Override public Kind getValueKind() { return valueKind; } @Override public LocationIdentity getLocationIdentity() { return locationIdentity; } @Override public ValueNode canonical(CanonicalizerTool tool) { if (index == null || indexScaling == 0) { return ConstantLocationNode.create(getLocationIdentity(), getValueKind(), displacement, graph()); } else if (index.isConstant()) { return ConstantLocationNode.create(getLocationIdentity(), getValueKind(), index.asConstant().asLong() * indexScaling + displacement, graph()); } return this; } @Override public Value generateAddress(LIRGeneratorTool gen, Value base) { return gen.emitAddress(base, displacement, gen.operand(getIndex()), getIndexScaling()); } }