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annotate graal/com.oracle.max.cri/src/com/oracle/max/cri/ri/RiRuntime.java @ 5275:290b3025b66f

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added support for disassembling code after installation (so that the result of patching and relocation can be seen)
author Doug Simon <doug.simon@oracle.com>
date Mon, 23 Apr 2012 15:49:11 +0200
parents dad1ac9dba7d
children 6cc970203f30
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1 /*
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2 * Copyright (c) 2009, 2012, 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.max.cri.ri;
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24
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25 import java.lang.reflect.*;
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26
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27 import com.oracle.max.cri.ci.*;
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29 /**
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30 * Encapsulates the main functionality of the runtime for the compiler, including access
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31 * to constant pools, OSR frames, inlining requirements, and runtime calls such as checkcast.
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32 s */
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33 public interface RiRuntime {
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34
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35 /**
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36 * Offset of the lock within the lock object on the stack.
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37
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38 * Note: superseded by sizeOfLockData() in Graal.
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39 *
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40 * @return the offset in bytes
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41 */
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42 int basicObjectLockOffsetInBytes();
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43
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44 /**
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45 * Get the size in bytes of a lock object on the stack.
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46 *
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47 * Note: superseded by sizeOfLockData() in Graal.
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48 */
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49 int sizeOfBasicObjectLock();
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50
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51 /**
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52 * Get the size in bytes for locking information on the stack.
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53 */
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54 int sizeOfLockData();
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55
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56 /**
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57 * The offset of the normal entry to the code. The compiler inserts NOP instructions to satisfy this constraint.
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58 *
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59 * @return the code offset in bytes
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60 */
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61 int codeOffset();
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62
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63 /**
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64 * Returns a disassembly of the given installed code.
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65 *
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66 * @param code the code that should be disassembled
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67 * @return a disassembly. This will be of length 0 if the runtime does not support disassembling.
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68 */
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69 String disassemble(RiCodeInfo code);
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70
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71 /**
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72 * Returns the disassembly of the given method in a {@code javap}-like format.
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73 *
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74 * @param method the method that should be disassembled
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75 * @return the disassembly. This will be of length 0 if the runtime does not support disassembling.
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76 */
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77 String disassemble(RiResolvedMethod method);
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78
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79 /**
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80 * Registers the given compiler stub and returns an object that can be used to identify it in the relocation
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81 * information.
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82 *
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83 * @param targetMethod the target method representing the code of the compiler stub
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84 * @param name the name of the stub, used for debugging purposes only
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85 * @param info the object into which details of the installed code will be written (ignored if null)
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86 * @return the identification object
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87 */
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88 Object registerCompilerStub(CiTargetMethod targetMethod, String name, RiCodeInfo info);
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89
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90 /**
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91 * Returns the RiType object representing the base type for the given kind.
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92 */
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93 RiResolvedType asRiType(CiKind kind);
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94
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95 /**
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96 * Returns the type of the given constant object.
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97 *
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98 * @return {@code null} if {@code constant.isNull() || !constant.kind.isObject()}
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99 */
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100 RiResolvedType getTypeOf(CiConstant constant);
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101
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102
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103 RiResolvedType getType(Class<?> clazz);
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104
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105 /**
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106 * Returns true if the given type is a subtype of java/lang/Throwable.
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107 */
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108 boolean isExceptionType(RiResolvedType type);
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109
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110 /**
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111 * Used by the canonicalizer to compare objects, since a given runtime might not want to expose the real objects to the compiler.
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112 *
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113 * @return true if the two parameters represent the same runtime object, false otherwise
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114 */
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115 boolean areConstantObjectsEqual(CiConstant x, CiConstant y);
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116
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117 /**
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118 * Gets the register configuration to use when compiling a given method.
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119 *
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120 * @param method the top level method of a compilation
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121 */
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122 RiRegisterConfig getRegisterConfig(RiMethod method);
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123
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124 RiRegisterConfig getGlobalStubRegisterConfig();
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125
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126 /**
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127 * Custom area on the stack of each compiled method that the VM can use for its own purposes.
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128 * @return the size of the custom area in bytes
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129 */
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130 int getCustomStackAreaSize();
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131
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132 /**
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133 * Minimum size of the stack area reserved for outgoing parameters. This area is reserved in all cases, even when
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134 * the compiled method has no regular call instructions.
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135 * @return the minimum size of the outgoing parameter area in bytes
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136 */
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137 int getMinimumOutgoingSize();
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138
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139 /**
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140 * Gets the length of the array that is wrapped in a CiConstant object.
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141 */
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142 int getArrayLength(CiConstant array);
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143
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144 /**
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145 * Converts the given CiConstant object to a object.
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146 *
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147 * @return {@code null} if the conversion is not possible <b>OR</b> {@code c.isNull() == true}
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148 */
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149 Object asJavaObject(CiConstant c);
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150
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151 /**
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152 * Converts the given CiConstant object to a {@link Class} object.
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153 *
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154 * @return {@code null} if the conversion is not possible.
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155 */
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156 Class<?> asJavaClass(CiConstant c);
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157
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158 /**
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159 * Performs any runtime-specific conversion on the object used to describe the target of a call.
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160 */
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161 Object asCallTarget(Object target);
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162
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163 /**
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164 * Returns the maximum absolute offset of a runtime call target from any position in the code cache or -1
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165 * when not known or not applicable. Intended for determining the required size of address/offset fields.
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166 */
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167 long getMaxCallTargetOffset(CiRuntimeCall rtcall);
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168
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169 /**
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170 * Provides the {@link RiMethod} for a {@link Method} obtained via reflection.
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171 */
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172 RiResolvedMethod getRiMethod(Method reflectionMethod);
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173
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174 /**
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175 * Installs some given machine code as the implementation of a given method.
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176 *
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177 * @param method a method whose executable code is being modified
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178 * @param code the code to be executed when {@code method} is called
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179 * @param info the object into which details of the installed code will be written (ignored if null)
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180 */
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181 void installMethod(RiResolvedMethod method, CiTargetMethod code, RiCodeInfo info);
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182
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183 /**
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184 * Adds the given machine code as an implementation of the given method without making it the default implementation.
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185 * @param method a method to which the executable code is begin added
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186 * @param code the code to be added
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187 * @return a reference to the compiled and ready-to-run code
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188 */
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189 RiCompiledMethod addMethod(RiResolvedMethod method, CiTargetMethod code);
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190
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191 /**
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192 * Encodes a deoptimization action and a deoptimization reason in an integer value.
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193 * @return the encoded value as an integer
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194 */
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195 int encodeDeoptActionAndReason(RiDeoptAction action, RiDeoptReason reason);
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196
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197 /**
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198 * Converts a RiDeoptReason into an integer value.
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199 * @return An integer value representing the given RiDeoptReason.
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200 */
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201 int convertDeoptReason(RiDeoptReason reason);
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202
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203 /**
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204 * Converts a RiDeoptAction into an integer value.
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205 * @return An integer value representing the given RiDeoptAction.
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206 */
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207 int convertDeoptAction(RiDeoptAction action);
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208 }