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annotate c1x4hotspotsrc/HotSpotVM/src/com/sun/hotspot/c1x/HotSpotTypeResolved.java @ 2058:8f033d37798a

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Better support for array types.
author Thomas Wuerthinger <wuerthinger@ssw.jku.at>
date Tue, 18 Jan 2011 10:19:59 +0100
parents 99ad52189524
children 9508a52cbd32
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1 /*
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2 * Copyright (c) 2010 Sun Microsystems, Inc. All rights reserved.
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3 *
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4 * Sun Microsystems, Inc. has intellectual property rights relating to technology embodied in the product
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5 * that is described in this document. In particular, and without limitation, these intellectual property
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6 * rights may include one or more of the U.S. patents listed at http://www.sun.com/patents and one or
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7 * more additional patents or pending patent applications in the U.S. and in other countries.
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8 *
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9 * U.S. Government Rights - Commercial software. Government users are subject to the Sun
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10 * Microsystems, Inc. standard license agreement and applicable provisions of the FAR and its
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11 * supplements.
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12 *
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13 * Use is subject to license terms. Sun, Sun Microsystems, the Sun logo, Java and Solaris are trademarks or
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14 * registered trademarks of Sun Microsystems, Inc. in the U.S. and other countries. All SPARC trademarks
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15 * are used under license and are trademarks or registered trademarks of SPARC International, Inc. in the
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16 * U.S. and other countries.
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17 *
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18 * UNIX is a registered trademark in the U.S. and other countries, exclusively licensed through X/Open
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19 * Company, Ltd.
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20 */
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21 package com.sun.hotspot.c1x;
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22
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23 import java.lang.reflect.*;
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24 import java.util.*;
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25
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26 import com.sun.cri.ci.*;
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27 import com.sun.cri.ri.*;
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28 import com.sun.hotspot.c1x.logging.*;
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29
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30 /**
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31 * Implementation of RiType for resolved non-primitive HotSpot classes.
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32 *
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33 * @author Thomas Wuerthinger, Lukas Stadler
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34 */
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35 public class HotSpotTypeResolved extends HotSpotType {
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36
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37 private Class javaMirror;
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38 private String simpleName;
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39 private int accessFlags;
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40 private boolean hasFinalizer;
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41 private boolean hasSubclass;
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42 private boolean hasFinalizableSubclass;
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43 private boolean isInitialized;
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44 private boolean isArrayClass;
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45 private boolean isInstanceClass;
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46 private boolean isInterface;
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47 private int instanceSize;
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48 private RiType componentType;
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49 private HashMap<Integer, RiField> fieldCache;
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50
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51 @Override
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52 public int accessFlags() {
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53 return accessFlags;
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54 }
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56 @Override
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57 public RiType arrayOf() {
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58 return Compiler.getVMEntries().RiType_arrayOf(this);
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59 }
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60
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61 @Override
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62 public RiType componentType() {
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63 return Compiler.getVMEntries().RiType_componentType(this);
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64 }
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65
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66 @Override
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67 public RiType uniqueConcreteSubtype() {
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68 return Compiler.getVMEntries().RiType_uniqueConcreteSubtype(this);
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69 }
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70
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71 @Override
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72 public RiType exactType() {
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73 if (Modifier.isFinal(accessFlags)) {
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74 return this;
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75 }
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76 return null;
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77 }
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78
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79 @Override
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80 public CiConstant getEncoding(Representation r) {
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81 switch (r) {
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82 case JavaClass:
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83 return CiConstant.forObject(javaClass());
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84 case ObjectHub:
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85 return CiConstant.forObject(this);
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86 case StaticFields:
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87 return CiConstant.forObject(this);
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88 case TypeInfo:
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89 return CiConstant.forObject(this);
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90 default:
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91 return null;
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92 }
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93 }
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94
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95 @Override
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96 public CiKind getRepresentationKind(Representation r) {
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97 return CiKind.Object;
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98 }
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99
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100 @Override
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101 public boolean hasFinalizableSubclass() {
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102 return hasFinalizableSubclass;
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103 }
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104
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105 @Override
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106 public boolean hasFinalizer() {
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107 return hasFinalizer;
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108 }
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109
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110 @Override
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111 public boolean hasSubclass() {
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112 return hasSubclass;
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113 }
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114
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115 @Override
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116 public boolean isArrayClass() {
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117 return isArrayClass;
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118 }
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119
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120 @Override
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121 public boolean isInitialized() {
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122 return isInitialized;
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123 }
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124
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125 @Override
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126 public boolean isInstance(Object obj) {
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127 return javaMirror.isInstance(obj);
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128 }
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129
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130 @Override
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131 public boolean isInstanceClass() {
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132 return isInstanceClass;
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133 }
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134
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135 @Override
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136 public boolean isInterface() {
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137 return isInterface;
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138 }
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139
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140 @Override
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141 public boolean isResolved() {
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142 return true;
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143 }
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144
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145 @Override
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146 public boolean isSubtypeOf(RiType other) {
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147 if (other instanceof HotSpotTypeResolved) {
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148 return Compiler.getVMEntries().RiType_isSubtypeOf(this, other);
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149 }
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150 // No resolved type is a subtype of an unresolved type.
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151 return false;
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152 }
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153
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154 @Override
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155 public Class<?> javaClass() {
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156 return javaMirror;
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157 }
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158
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159 @Override
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160 public CiKind kind() {
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161 return CiKind.Object;
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162 }
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163
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164 @Override
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165 public RiMethod resolveMethodImpl(RiMethod method) {
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166 assert method instanceof HotSpotMethod;
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167 return Compiler.getVMEntries().RiType_resolveMethodImpl(this, method.name(), method.signature().asString());
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168 }
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169
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170 @Override
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171 public String toString() {
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172 return "HotSpotType<" + simpleName + ", resolved>";
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173 }
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174
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175 public RiConstantPool constantPool() {
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176 return Compiler.getVMEntries().RiType_constantPool(this);
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177 }
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178
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179 public int instanceSize() {
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180 return instanceSize;
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181 }
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182
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183 public RiField createRiField(String name, RiType type, int offset) {
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184 RiField result = null;
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185
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186 // (tw) Must cache the fields, because the local load elimination only works if the objects from two field lookups are equal.
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187 if (fieldCache == null) {
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188 fieldCache = new HashMap<Integer, RiField>(8);
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189 } else {
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190 result = fieldCache.get(offset);
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191 }
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192
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193 if (result == null) {
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194 result = new HotSpotField(this, name, type, offset);
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195 fieldCache.put(offset, result);
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196 }
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197
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198 return result;
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199 }
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200
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201 }