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annotate graal/com.oracle.graal.lir/src/com/oracle/graal/lir/LIRInstruction.java @ 19526:8fc336a04d77

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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 35481bcb5882
children a69a7c0e0ccc
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1 /*
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2 * Copyright (c) 2009, 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.lir;
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24
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25 import java.lang.annotation.*;
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26 import java.util.*;
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27
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28 import static com.oracle.graal.lir.LIRInstruction.OperandFlag.*;
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29 import static com.oracle.graal.lir.LIRInstruction.OperandMode.*;
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30
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31 import com.oracle.graal.api.code.*;
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32 import com.oracle.graal.api.meta.*;
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33 import com.oracle.graal.debug.*;
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34 import com.oracle.graal.lir.asm.*;
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35
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36 /**
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37 * The base class for an {@code LIRInstruction}.
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38 */
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39 public abstract class LIRInstruction {
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40 public static final Value[] NO_OPERANDS = {};
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41
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42 /**
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43 * Constants denoting how a LIR instruction uses an operand.
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44 */
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45 public enum OperandMode {
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46 /**
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47 * The value must have been defined before. It is alive before the instruction until the
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48 * beginning of the instruction, but not necessarily throughout the instruction. A register
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49 * assigned to it can also be assigned to a {@link #TEMP} or {@link #DEF} operand. The value
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50 * can be used again after the instruction, so the instruction must not modify the register.
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51 */
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52 USE,
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53
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54 /**
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55 * The value must have been defined before. It is alive before the instruction and
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56 * throughout the instruction. A register assigned to it cannot be assigned to a
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57 * {@link #TEMP} or {@link #DEF} operand. The value can be used again after the instruction,
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58 * so the instruction must not modify the register.
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59 */
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60 ALIVE,
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61
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62 /**
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63 * The value must not have been defined before, and must not be used after the instruction.
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64 * The instruction can do whatever it wants with the register assigned to it (or not use it
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65 * at all).
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66 */
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67 TEMP,
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69 /**
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70 * The value must not have been defined before. The instruction has to assign a value to the
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71 * register. The value can (and most likely will) be used after the instruction.
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72 */
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73 DEF,
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74 }
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75
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76 @Retention(RetentionPolicy.RUNTIME)
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77 @Target(ElementType.FIELD)
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78 public static @interface Use {
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79
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80 OperandFlag[] value() default OperandFlag.REG;
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81 }
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82
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83 @Retention(RetentionPolicy.RUNTIME)
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84 @Target(ElementType.FIELD)
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85 public static @interface Alive {
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86
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87 OperandFlag[] value() default OperandFlag.REG;
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88 }
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89
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90 @Retention(RetentionPolicy.RUNTIME)
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91 @Target(ElementType.FIELD)
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92 public static @interface Temp {
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93
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94 OperandFlag[] value() default OperandFlag.REG;
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95 }
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96
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97 @Retention(RetentionPolicy.RUNTIME)
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98 @Target(ElementType.FIELD)
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99 public static @interface Def {
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100
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101 OperandFlag[] value() default OperandFlag.REG;
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102 }
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103
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104 @Retention(RetentionPolicy.RUNTIME)
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105 @Target(ElementType.FIELD)
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106 public static @interface State {
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107 }
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108
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109 /**
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110 * Flags for an operand.
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111 */
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112 public enum OperandFlag {
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113 /**
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114 * The value can be a {@link RegisterValue}.
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115 */
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116 REG,
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117
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118 /**
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119 * The value can be a {@link StackSlot}.
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120 */
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121 STACK,
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122
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123 /**
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124 * The value can be a {@link CompositeValue}.
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125 */
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126 COMPOSITE,
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127
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128 /**
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129 * The value can be a {@link JavaConstant}.
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130 */
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131 CONST,
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132
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133 /**
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134 * The value can be {@link Value#ILLEGAL}.
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135 */
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136 ILLEGAL,
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137
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138 /**
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139 * The register allocator should try to assign a certain register to improve code quality.
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140 * Use {@link LIRInstruction#forEachRegisterHint} to access the register hints.
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141 */
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142 HINT,
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143
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144 /**
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145 * The value can be uninitialized, e.g., a stack slot that has not written to before. This
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146 * is only used to avoid false positives in verification code.
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147 */
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148 UNINITIALIZED,
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149 }
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150
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151 /**
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152 * For validity checking of the operand flags defined by instruction subclasses.
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153 */
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154 protected static final EnumMap<OperandMode, EnumSet<OperandFlag>> ALLOWED_FLAGS;
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155
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156 static {
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157 ALLOWED_FLAGS = new EnumMap<>(OperandMode.class);
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158 ALLOWED_FLAGS.put(OperandMode.USE, EnumSet.of(REG, STACK, COMPOSITE, CONST, ILLEGAL, HINT, UNINITIALIZED));
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159 ALLOWED_FLAGS.put(ALIVE, EnumSet.of(REG, STACK, COMPOSITE, CONST, ILLEGAL, HINT, UNINITIALIZED));
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160 ALLOWED_FLAGS.put(TEMP, EnumSet.of(REG, COMPOSITE, CONST, ILLEGAL, HINT));
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161 ALLOWED_FLAGS.put(DEF, EnumSet.of(REG, STACK, COMPOSITE, ILLEGAL, HINT));
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162 }
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163
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164 /**
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165 * The flags of the base and index value of an address.
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166 */
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167 protected static final EnumSet<OperandFlag> ADDRESS_FLAGS = EnumSet.of(REG, ILLEGAL);
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168
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169 private final LIRInstructionClass<?> instructionClass;
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170
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171 /**
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172 * Instruction id for register allocation.
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173 */
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174 private int id;
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175
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176 private static final DebugMetric LIR_NODE_COUNT = Debug.metric("LIRNodes");
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177
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178 /**
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179 * Constructs a new LIR instruction.
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180 */
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181 public LIRInstruction(LIRInstructionClass<? extends LIRInstruction> c) {
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182 LIR_NODE_COUNT.increment();
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183 instructionClass = c;
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184 assert c.getClazz() == this.getClass();
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185 id = -1;
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186 }
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187
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188 public abstract void emitCode(CompilationResultBuilder crb);
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189
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190 public final int id() {
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191 return id;
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192 }
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193
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194 public final void setId(int id) {
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195 this.id = id;
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196 }
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197
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198 public final String name() {
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199 return instructionClass.getOpcode(this);
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200 }
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201
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202 public final boolean hasOperands() {
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203 return instructionClass.hasOperands() || hasState() || destroysCallerSavedRegisters();
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204 }
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205
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206 public final boolean hasState() {
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207 return instructionClass.hasState(this);
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208 }
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209
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210 public boolean destroysCallerSavedRegisters() {
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211 return false;
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212 }
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213
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214 // ValuePositionProcedures
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215 public final void forEachInputPos(ValuePositionProcedure proc) {
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216 instructionClass.forEachUsePos(this, proc);
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217 }
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218
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219 public final void forEachAlivePos(ValuePositionProcedure proc) {
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220 instructionClass.forEachAlivePos(this, proc);
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221 }
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222
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223 public final void forEachTempPos(ValuePositionProcedure proc) {
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224 instructionClass.forEachTempPos(this, proc);
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225 }
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226
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227 public final void forEachOutputPos(ValuePositionProcedure proc) {
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228 instructionClass.forEachDefPos(this, proc);
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229 }
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230
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231 // InstructionValueProcedures
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232 public final void forEachInput(InstructionValueProcedure proc) {
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233 instructionClass.forEachUse(this, proc);
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234 }
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235
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236 public final void forEachAlive(InstructionValueProcedure proc) {
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237 instructionClass.forEachAlive(this, proc);
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238 }
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239
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240 public final void forEachTemp(InstructionValueProcedure proc) {
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241 instructionClass.forEachTemp(this, proc);
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242 }
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243
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244 public final void forEachOutput(InstructionValueProcedure proc) {
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245 instructionClass.forEachDef(this, proc);
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246 }
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247
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248 public final void forEachState(InstructionValueProcedure proc) {
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249 instructionClass.forEachState(this, proc);
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250 }
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251
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252 // ValueProcedures
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253 public final void forEachInput(ValueProcedure proc) {
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254 instructionClass.forEachUse(this, proc);
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255 }
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256
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257 public final void forEachAlive(ValueProcedure proc) {
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258 instructionClass.forEachAlive(this, proc);
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259 }
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260
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261 public final void forEachTemp(ValueProcedure proc) {
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262 instructionClass.forEachTemp(this, proc);
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263 }
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264
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265 public final void forEachOutput(ValueProcedure proc) {
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266 instructionClass.forEachDef(this, proc);
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267 }
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268
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269 public final void forEachState(ValueProcedure proc) {
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270 instructionClass.forEachState(this, proc);
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271 }
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272
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273 // States
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274 public final void forEachState(InstructionStateProcedure proc) {
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275 instructionClass.forEachState(this, proc);
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276 }
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277
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278 public final void forEachState(StateProcedure proc) {
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279 instructionClass.forEachState(this, proc);
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280 }
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281
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282 // InstructionValueConsumers
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283 public final void visitEachInput(InstructionValueConsumer proc) {
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284 instructionClass.forEachUse(this, proc);
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285 }
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286
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287 public final void visitEachAlive(InstructionValueConsumer proc) {
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288 instructionClass.forEachAlive(this, proc);
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289 }
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290
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291 public final void visitEachTemp(InstructionValueConsumer proc) {
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292 instructionClass.forEachTemp(this, proc);
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293 }
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294
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295 public final void visitEachOutput(InstructionValueConsumer proc) {
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296 instructionClass.forEachDef(this, proc);
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297 }
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298
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299 public final void visitEachState(InstructionValueConsumer proc) {
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300 instructionClass.forEachState(this, proc);
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301 }
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302
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303 // ValueConsumers
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304 public final void visitEachInput(ValueConsumer proc) {
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305 instructionClass.forEachUse(this, proc);
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306 }
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307
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308 public final void visitEachAlive(ValueConsumer proc) {
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309 instructionClass.forEachAlive(this, proc);
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310 }
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311
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312 public final void visitEachTemp(ValueConsumer proc) {
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313 instructionClass.forEachTemp(this, proc);
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314 }
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315
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316 public final void visitEachOutput(ValueConsumer proc) {
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317 instructionClass.forEachDef(this, proc);
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318 }
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319
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320 public final void visitEachState(ValueConsumer proc) {
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321 instructionClass.forEachState(this, proc);
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322 }
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323
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324 @SuppressWarnings("unused")
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325 public final Value forEachRegisterHint(Value value, OperandMode mode, InstructionValueProcedure proc) {
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326 return instructionClass.forEachRegisterHint(this, mode, proc);
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327 }
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328
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329 @SuppressWarnings("unused")
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330 public final Value forEachRegisterHint(Value value, OperandMode mode, ValueProcedure proc) {
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331 return instructionClass.forEachRegisterHint(this, mode, proc);
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332 }
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333
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334 public void verify() {
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335 }
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336
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337 public final String toStringWithIdPrefix() {
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338 if (id != -1) {
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339 return String.format("%4d %s", id, toString());
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340 }
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341 return " " + toString();
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342 }
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343
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344 @Override
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345 public String toString() {
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346 return instructionClass.toString(this);
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347 }
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348
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349 public LIRInstructionClass<?> getLIRInstructionClass() {
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350 return instructionClass;
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351 }
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352 }