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annotate c1x4hotspotsrc/HotSpotVM/src/com/sun/hotspot/c1x/HotSpotTypeResolved.java @ 2059:9508a52cbd32

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Add deoptimization blob support.
author Thomas Wuerthinger <wuerthinger@ssw.jku.at>
date Wed, 19 Jan 2011 15:48:15 +0100
parents 8f033d37798a
children 231bf6b9f5ad
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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
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29 /**
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30 * Implementation of RiType for resolved non-primitive HotSpot classes.
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31 *
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32 * @author Thomas Wuerthinger, Lukas Stadler
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33 */
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34 public class HotSpotTypeResolved extends HotSpotType {
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35
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36 private Class javaMirror;
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37 private String simpleName;
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38 private int accessFlags;
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39 private boolean hasFinalizer;
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40 private boolean hasSubclass;
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41 private boolean hasFinalizableSubclass;
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42 private boolean isInitialized;
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43 private boolean isArrayClass;
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44 private boolean isInstanceClass;
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45 private boolean isInterface;
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46 private int instanceSize;
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47 private RiType componentType;
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48 private HashMap<Integer, RiField> fieldCache;
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49
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50 @Override
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51 public int accessFlags() {
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52 return accessFlags;
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53 }
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54
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55 @Override
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56 public RiType arrayOf() {
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57 return Compiler.getVMEntries().RiType_arrayOf(this);
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58 }
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59
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60 @Override
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61 public RiType componentType() {
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62 return Compiler.getVMEntries().RiType_componentType(this);
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63 }
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64
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65 @Override
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66 public RiType uniqueConcreteSubtype() {
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67 return Compiler.getVMEntries().RiType_uniqueConcreteSubtype(this);
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68 }
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69
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70 @Override
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71 public RiType exactType() {
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72 if (Modifier.isFinal(accessFlags)) {
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73 return this;
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74 }
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75 return null;
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76 }
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77
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78 @Override
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79 public CiConstant getEncoding(Representation r) {
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80 switch (r) {
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81 case JavaClass:
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82 return CiConstant.forObject(javaClass());
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83 case ObjectHub:
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84 return CiConstant.forObject(this);
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85 case StaticFields:
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86 return CiConstant.forObject(this);
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87 case TypeInfo:
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88 return CiConstant.forObject(this);
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89 default:
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90 return null;
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91 }
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92 }
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93
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94 @Override
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95 public CiKind getRepresentationKind(Representation r) {
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96 return CiKind.Object;
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97 }
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98
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99 @Override
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100 public boolean hasFinalizableSubclass() {
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101 return hasFinalizableSubclass;
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102 }
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103
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104 @Override
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105 public boolean hasFinalizer() {
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106 return hasFinalizer;
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107 }
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108
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109 @Override
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110 public boolean hasSubclass() {
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111 return hasSubclass;
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112 }
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113
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114 @Override
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115 public boolean isArrayClass() {
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116 return isArrayClass;
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117 }
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118
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119 @Override
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120 public boolean isInitialized() {
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121 return isInitialized;
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122 }
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123
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124 @Override
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125 public boolean isInstance(Object obj) {
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126 return javaMirror.isInstance(obj);
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127 }
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128
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129 @Override
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130 public boolean isInstanceClass() {
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131 return isInstanceClass;
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132 }
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133
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134 @Override
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135 public boolean isInterface() {
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136 return isInterface;
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137 }
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138
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139 @Override
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140 public boolean isResolved() {
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141 return true;
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142 }
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143
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144 @Override
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145 public boolean isSubtypeOf(RiType other) {
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146 if (other instanceof HotSpotTypeResolved) {
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147 return Compiler.getVMEntries().RiType_isSubtypeOf(this, other);
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148 }
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149 // No resolved type is a subtype of an unresolved type.
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150 return false;
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151 }
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152
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153 @Override
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154 public Class<?> javaClass() {
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155 return javaMirror;
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156 }
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157
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158 @Override
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159 public CiKind kind() {
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160 return CiKind.Object;
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161 }
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162
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163 @Override
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164 public RiMethod resolveMethodImpl(RiMethod method) {
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165 assert method instanceof HotSpotMethod;
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166 return Compiler.getVMEntries().RiType_resolveMethodImpl(this, method.name(), method.signature().asString());
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167 }
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168
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169 @Override
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170 public String toString() {
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171 return "HotSpotType<" + simpleName + ", resolved>";
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172 }
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173
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174 public RiConstantPool constantPool() {
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175 return Compiler.getVMEntries().RiType_constantPool(this);
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176 }
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177
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178 public int instanceSize() {
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179 return instanceSize;
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180 }
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181
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182 public RiField createRiField(String name, RiType type, int offset) {
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183 RiField result = null;
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184
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185 // (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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186 if (fieldCache == null) {
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187 fieldCache = new HashMap<Integer, RiField>(8);
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188 } else {
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189 result = fieldCache.get(offset);
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190 }
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191
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192 if (result == null) {
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193 result = new HotSpotField(this, name, type, offset);
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194 fieldCache.put(offset, result);
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195 }
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196
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197 return result;
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198 }
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199
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200 }