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annotate graal/com.oracle.graal.word/src/com/oracle/graal/word/nodes/SnippetLocationNode.java @ 19529:8fc336a04d77

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Create TYPE fields for LIRInstruction and CompositeValue. Renaming NodeClass#get to NodeClass#create.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Fri, 20 Feb 2015 22:22:55 +0100
parents 61d3cb8e1280
children 3d0116ec99c5
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * Copyright (c) 2013, 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.word.nodes;
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24
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25 import static com.oracle.graal.api.meta.LocationIdentity.*;
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26
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27 import com.oracle.graal.api.meta.*;
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28 import com.oracle.graal.api.replacements.*;
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29 import com.oracle.graal.compiler.common.*;
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30 import com.oracle.graal.compiler.common.type.*;
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31 import com.oracle.graal.graph.*;
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32 import com.oracle.graal.graph.spi.*;
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33 import com.oracle.graal.lir.gen.*;
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34 import com.oracle.graal.nodeinfo.*;
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35 import com.oracle.graal.nodes.*;
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36 import com.oracle.graal.nodes.extended.*;
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37 import com.oracle.graal.nodes.spi.*;
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38
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39 /**
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40 * Location node that can be used inside a snippet without having the elements (including the
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41 * location identity and kind) as a snippet constant. Can represent locations in the form of [base +
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42 * index * scale + disp]. When the location is created, all elements (base, index, scale, disp) are
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43 * nodes. Both scale and disp must eventually canonicalize to {@link ConstantNode constants} so that
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44 * this node can be canonicalized to a {@link IndexedLocationNode} or {@link ConstantLocationNode}.
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45 */
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46 @NodeInfo
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47 public final class SnippetLocationNode extends LocationNode implements Canonicalizable {
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48 public static final NodeClass<SnippetLocationNode> TYPE = NodeClass.create(SnippetLocationNode.class);
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49
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50 protected final SnippetReflectionProvider snippetReflection;
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51
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52 @Input(InputType.Association) ValueNode locationIdentity;
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53 @Input ValueNode displacement;
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54 @Input ValueNode index;
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55 @Input ValueNode indexScaling;
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56
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57 public SnippetLocationNode(@InjectedNodeParameter SnippetReflectionProvider snippetReflection, ValueNode locationIdentity, ValueNode displacement) {
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58 this(snippetReflection, locationIdentity, displacement, null, null);
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59 }
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60
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61 public SnippetLocationNode(@InjectedNodeParameter SnippetReflectionProvider snippetReflection, ValueNode locationIdentity, ValueNode displacement, ValueNode index, ValueNode indexScaling) {
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62 super(TYPE, StampFactory.object());
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63 this.snippetReflection = snippetReflection;
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64 this.locationIdentity = locationIdentity;
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65 this.displacement = displacement;
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66 this.index = index;
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67 this.indexScaling = indexScaling;
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68 }
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69
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70 @Override
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71 public LocationIdentity getLocationIdentity() {
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72 if (locationIdentity.isConstant()) {
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73 LocationIdentity identity = snippetReflection.asObject(LocationIdentity.class, locationIdentity.asJavaConstant());
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74 return identity;
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75 }
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76 // We do not know our actual location identity yet, so be conservative.
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77 return ANY_LOCATION;
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78 }
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79
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80 @Override
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81 public Node canonical(CanonicalizerTool tool) {
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82 if (locationIdentity.isConstant() && displacement.isConstant() && (indexScaling == null || indexScaling.isConstant())) {
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83 LocationIdentity constLocation = snippetReflection.asObject(LocationIdentity.class, locationIdentity.asJavaConstant());
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84 long constDisplacement = displacement.asJavaConstant().asLong();
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85 int constIndexScaling = indexScaling == null ? 0 : indexScaling.asJavaConstant().asInt();
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86
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87 if (index == null || constIndexScaling == 0) {
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88 return graph().unique(new ConstantLocationNode(constLocation, constDisplacement));
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89 } else if (index.isConstant()) {
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90 return graph().unique(new ConstantLocationNode(constLocation, index.asJavaConstant().asLong() * constIndexScaling + constDisplacement));
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91 } else {
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92 return graph().unique(new IndexedLocationNode(constLocation, constDisplacement, index, constIndexScaling));
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93 }
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94 }
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95 return this;
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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 throw new GraalInternalError("locationIdentity must be a constant so that this node can be canonicalized: " + locationIdentity);
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101 }
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102
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103 @Override
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104 public IntegerStamp getDisplacementStamp() {
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105 throw GraalInternalError.shouldNotReachHere();
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106 }
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107
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108 @NodeIntrinsic
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109 public static native Location constantLocation(LocationIdentity identity, long displacement);
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110
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111 @NodeIntrinsic
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112 public static native Location indexedLocation(LocationIdentity identity, long displacement, int index, int indexScaling);
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113 }