Mercurial > hg > truffle
annotate graal/com.oracle.max.asmdis/src/com/sun/max/asm/gen/InstructionDescription.java @ 4150:c78bace5086a
start work on integrating old hooks into mx, work on sanity checks
introduce a DB class to access the bench DB in an easier way (create benchmarks and benchmark values automatically in the DB)
author | Gilles Duboscq <gilles.m.duboscq@gmail.com> |
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date | Tue, 20 Dec 2011 15:34:43 +0100 |
parents | bc8527f3071c |
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rev | line source |
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1 /* |
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2 * Copyright (c) 2007, 2011, 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.sun.max.asm.gen; |
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24 |
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25 import java.util.*; |
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26 |
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27 import com.sun.max.asm.gen.cisc.x86.*; |
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28 import com.sun.max.asm.gen.risc.*; |
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29 import com.sun.max.asm.gen.risc.field.*; |
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30 import com.sun.max.lang.*; |
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31 import com.sun.max.program.*; |
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32 |
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33 /** |
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34 * A sequence of objects that describe group of closely related instructions. An |
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35 * {@link #Template instruction template} is created for each instruction in the |
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36 * group. |
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37 * <p> |
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38 * The types of objects that an instruction description contains |
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39 * depend on the whether the underlying platform is CISC or RISC. |
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40 * The types for these two instruction categories are enumerated by |
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41 * the {@code visit...} methods in the {@link RiscInstructionDescriptionVisitor} |
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42 * and {@link X86InstructionDescriptionVisitor} classes. |
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43 */ |
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44 public abstract class InstructionDescription implements Iterable<Object>, Cloneable { |
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45 |
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46 private static int nextSerial; |
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47 |
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48 private int serial; |
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49 |
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50 /** |
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51 * The components of the description. |
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52 */ |
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53 private final List<Object> specifications; |
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54 |
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55 public InstructionDescription(List<Object> specifications) { |
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56 this.specifications = specifications; |
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57 this.serial = nextSerial++; |
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58 } |
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59 |
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60 public int serial() { |
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61 return serial; |
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62 } |
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63 |
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64 /** |
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65 * @return the objects from which this description is composed |
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66 */ |
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67 public List<Object> specifications() { |
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68 return specifications; |
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69 } |
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70 |
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71 private List<InstructionConstraint> constraints; |
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72 |
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73 /** |
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74 * @return the {@link InstructionConstraint} instances (if any) within this description |
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75 */ |
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76 public List<InstructionConstraint> constraints() { |
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77 if (constraints == null) { |
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78 constraints = new ArrayList<>(specifications.size()); |
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79 for (Object s : specifications) { |
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80 if (s instanceof InstructionConstraint) { |
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81 constraints.add((InstructionConstraint) s); |
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82 } |
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83 } |
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84 } |
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85 return constraints; |
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86 } |
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87 |
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88 private String architectureManualSection; |
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89 |
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90 public InstructionDescription setArchitectureManualSection(String section) { |
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91 architectureManualSection = section; |
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92 return this; |
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93 } |
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94 |
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95 public String architectureManualSection() { |
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96 return architectureManualSection; |
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97 } |
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98 |
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99 private String externalName; |
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100 |
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101 public String externalName() { |
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102 return externalName; |
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103 } |
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104 |
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105 public InstructionDescription setExternalName(String name) { |
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106 this.externalName = name; |
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107 return this; |
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108 } |
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109 |
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110 private boolean isDisassemblable = true; |
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111 |
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112 /** |
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113 * Determines if the templates created from the description can be recovered from an assembled instruction. |
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114 * This is almost always possible. One example where it isn't is an instruction description that |
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115 * has a parameter that is not correlated one-to-one with some bits in the encoded instruction. |
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116 * In RISC architectures, this will be any instruction that has at least one {@link InputOperandField} |
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117 * parameter. |
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118 */ |
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119 public boolean isDisassemblable() { |
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120 return isDisassemblable; |
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121 } |
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122 |
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123 public InstructionDescription beNotDisassemblable() { |
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124 isDisassemblable = false; |
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125 return this; |
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126 } |
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127 |
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128 public boolean isSynthetic() { |
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129 return false; |
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130 } |
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131 |
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132 private boolean isExternallyTestable = true; |
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133 |
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134 public boolean isExternallyTestable() { |
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135 return isExternallyTestable; |
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136 } |
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137 |
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138 public InstructionDescription beNotExternallyTestable() { |
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139 isExternallyTestable = false; |
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140 return this; |
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141 } |
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142 |
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143 private WordWidth requiredAddressSize; |
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144 |
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145 public WordWidth requiredAddressSize() { |
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146 return requiredAddressSize; |
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147 } |
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148 |
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149 public InstructionDescription requireAddressSize(WordWidth addressSize) { |
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150 this.requiredAddressSize = addressSize; |
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151 return this; |
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152 } |
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153 |
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154 private WordWidth requiredOperandSize; |
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155 |
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156 public WordWidth requiredOperandSize() { |
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157 return requiredOperandSize; |
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158 } |
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159 |
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160 public InstructionDescription requireOperandSize(WordWidth operandSize) { |
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161 this.requiredOperandSize = operandSize; |
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162 return this; |
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163 } |
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164 |
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165 public Iterator<Object> iterator() { |
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166 return specifications.iterator(); |
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167 } |
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168 |
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169 @Override |
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170 public InstructionDescription clone() { |
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171 try { |
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172 final InstructionDescription clone = (InstructionDescription) super.clone(); |
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173 clone.serial = ++nextSerial; |
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174 return clone; |
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175 } catch (CloneNotSupportedException cloneNotSupportedException) { |
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176 throw ProgramError.unexpected(cloneNotSupportedException); |
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177 } |
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178 } |
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179 |
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180 @Override |
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181 public final int hashCode() { |
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182 return serial; |
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183 } |
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184 |
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185 @Override |
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186 public final boolean equals(Object object) { |
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187 if (object instanceof InstructionDescription) { |
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188 return serial == ((InstructionDescription) object).serial; |
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189 } |
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190 return false; |
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191 } |
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192 |
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193 } |