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annotate graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/IndexedLocationNode.java @ 19403:7e2c87dae93e

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Create static final NodeClass field named TYPE in Node subclasses.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Mon, 16 Feb 2015 15:43:03 +0100
parents f57d86eb036f
children 61d3cb8e1280
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1 /*
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2 * Copyright (c) 2011, 2015, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.oracle.graal.nodes.extended;
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24
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25 import com.oracle.graal.api.code.*;
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26 import com.oracle.graal.api.meta.*;
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27 import com.oracle.graal.compiler.common.type.*;
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28 import com.oracle.graal.graph.*;
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29 import com.oracle.graal.graph.spi.*;
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30 import com.oracle.graal.lir.gen.*;
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31 import com.oracle.graal.nodeinfo.*;
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32 import com.oracle.graal.nodes.*;
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33 import com.oracle.graal.nodes.spi.*;
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34
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35 /**
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36 * Location node that has a displacement and a scaled index. Can represent locations in the form of
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37 * [base + index * scale + disp] where base and index are nodes and scale and disp are integer
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38 * constants.
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39 */
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40 @NodeInfo(nameTemplate = "IdxLoc {p#locationIdentity/s}")
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41 public final class IndexedLocationNode extends LocationNode implements Canonicalizable {
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42 public static final NodeClass TYPE = NodeClass.get(IndexedLocationNode.class);
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43
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44 protected final LocationIdentity locationIdentity;
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45 protected final long displacement;
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46 @Input ValueNode index;
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47 protected final int indexScaling;
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48
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49 /**
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50 * Gets the index or offset of this location.
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51 */
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52 public ValueNode getIndex() {
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53 return index;
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54 }
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55
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56 public long getDisplacement() {
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57 return displacement;
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58 }
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59
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60 /**
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61 * @return Constant that is used to scale the index.
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62 */
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63 public int getIndexScaling() {
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64 return indexScaling;
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65 }
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66
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67 public IndexedLocationNode(LocationIdentity identity, long displacement, ValueNode index, int indexScaling) {
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68 super(TYPE, StampFactory.forVoid());
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69 assert index != null;
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70 assert indexScaling != 0;
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71 this.locationIdentity = identity;
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72 this.index = index;
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73 this.displacement = displacement;
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74 this.indexScaling = indexScaling;
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75 }
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76
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77 @Override
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78 public LocationIdentity getLocationIdentity() {
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79 return locationIdentity;
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80 }
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81
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82 @Override
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83 public Node canonical(CanonicalizerTool tool) {
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84 if (index.isConstant()) {
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85 return new ConstantLocationNode(getLocationIdentity(), index.asJavaConstant().asLong() * indexScaling + displacement);
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86 }
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87 return this;
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88 }
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90 @Override
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91 public IntegerStamp getDisplacementStamp() {
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92 assert indexScaling > 0 && CodeUtil.isPowerOf2(indexScaling);
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93 int scale = CodeUtil.log2(indexScaling);
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94 return (IntegerStamp) IntegerStamp.OPS.getAdd().foldStamp(StampFactory.forInteger(64, displacement, displacement),
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95 IntegerStamp.OPS.getSignExtend().foldStamp(32, 64, IntegerStamp.OPS.getShl().foldStamp(index.stamp(), StampFactory.forInteger(64, scale, scale))));
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96 }
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97
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98 @Override
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99 public Value generateAddress(NodeMappableLIRBuilder builder, LIRGeneratorTool gen, Value base) {
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100 return gen.emitAddress(base, displacement, builder.operand(getIndex()), getIndexScaling());
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101 }
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102 }