Mercurial > hg > graal-compiler
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/IndexedLocationNode.java @ 16919:0fe4732e5181
made use of generated Node classes predicated on value of graal.useGeneratedNodes system property (default is false)
author | Doug Simon <doug.simon@oracle.com> |
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date | Mon, 25 Aug 2014 13:45:12 +0200 |
parents | f90dcdbbb75e |
children | 75177b3cc5a8 |
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/* * Copyright (c) 2011, 2014, 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.code.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.compiler.common.type.*; import com.oracle.graal.graph.*; import com.oracle.graal.graph.spi.*; import com.oracle.graal.lir.gen.*; import com.oracle.graal.nodeinfo.*; 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 class IndexedLocationNode extends LocationNode implements Canonicalizable { private final Kind valueKind; private final LocationIdentity locationIdentity; private final long displacement; @Input 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(IndexedLocationNode.create(identity, kind, displacement, index, indexScaling)); } public static IndexedLocationNode create(LocationIdentity identity, Kind kind, long displacement, ValueNode index, int indexScaling) { return USE_GENERATED_NODES ? new IndexedLocationNodeGen(identity, kind, displacement, index, indexScaling) : new IndexedLocationNode(identity, kind, displacement, index, indexScaling); } IndexedLocationNode(LocationIdentity identity, Kind kind, long displacement, ValueNode index, int indexScaling) { super(StampFactory.forVoid()); assert index != null; assert indexScaling != 0; 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 Node canonical(CanonicalizerTool tool) { if (index.isConstant()) { return ConstantLocationNode.create(getLocationIdentity(), getValueKind(), index.asConstant().asLong() * indexScaling + displacement); } return this; } @Override public IntegerStamp getDisplacementStamp() { assert indexScaling > 0 && CodeUtil.isPowerOf2(indexScaling); int scale = CodeUtil.log2(indexScaling); return (IntegerStamp) StampTool.add(StampFactory.forInteger(64, displacement, displacement), StampTool.signExtend(StampTool.leftShift(index.stamp(), StampFactory.forInteger(64, scale, scale)), 64)); } @Override public Value generateAddress(NodeMappableLIRBuilder builder, LIRGeneratorTool gen, Value base) { return gen.emitAddress(base, displacement, builder.operand(getIndex()), getIndexScaling()); } }