Mercurial > hg > truffle
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/IndexedLocationNode.java @ 19526:8fc336a04d77
Create TYPE fields for LIRInstruction and CompositeValue. Renaming NodeClass#get to NodeClass#create.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Fri, 20 Feb 2015 22:22:55 +0100 |
parents | 61d3cb8e1280 |
children | 58f2aad37d0e |
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/* * Copyright (c) 2011, 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 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.*; /** * 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 { public static final NodeClass<IndexedLocationNode> TYPE = NodeClass.create(IndexedLocationNode.class); protected final LocationIdentity locationIdentity; protected final long displacement; @Input ValueNode index; protected 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 IndexedLocationNode(LocationIdentity identity, long displacement, ValueNode index, int indexScaling) { super(TYPE, StampFactory.forVoid()); assert index != null; assert indexScaling != 0; this.locationIdentity = identity; this.index = index; this.displacement = displacement; this.indexScaling = indexScaling; } @Override public LocationIdentity getLocationIdentity() { return locationIdentity; } @Override public Node canonical(CanonicalizerTool tool) { if (index.isConstant()) { return new ConstantLocationNode(getLocationIdentity(), index.asJavaConstant().asLong() * indexScaling + displacement); } return this; } @Override public IntegerStamp getDisplacementStamp() { assert indexScaling > 0 && CodeUtil.isPowerOf2(indexScaling); int scale = CodeUtil.log2(indexScaling); return (IntegerStamp) IntegerStamp.OPS.getAdd().foldStamp(StampFactory.forInteger(64, displacement, displacement), IntegerStamp.OPS.getSignExtend().foldStamp(32, 64, IntegerStamp.OPS.getShl().foldStamp(index.stamp(), StampFactory.forInteger(64, scale, scale)))); } @Override public Value generateAddress(NodeMappableLIRBuilder builder, LIRGeneratorTool gen, Value base) { return gen.emitAddress(base, displacement, builder.operand(getIndex()), getIndexScaling()); } }