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annotate c1x4hotspotsrc/HotSpotVM/src/com/sun/hotspot/c1x/HotSpotRuntime.java @ 1938:1aa5b22a7716

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Support for custom stack area (needed for deoptimization).
author Thomas Wuerthinger <wuerthinger@ssw.jku.at>
date Mon, 27 Dec 2010 14:22:55 +0100
parents ace6e55373eb
children 177398c6147d
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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.io.*;
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24 import java.lang.reflect.*;
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25 import java.util.*;
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26
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27 import com.sun.cri.ci.*;
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28 import com.sun.cri.ci.CiTargetMethod.Call;
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29 import com.sun.cri.ci.CiTargetMethod.DataPatch;
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30 import com.sun.cri.ci.CiTargetMethod.Safepoint;
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31 import com.sun.cri.ri.*;
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32 import com.sun.max.asm.dis.*;
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33 import com.sun.max.lang.*;
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34
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35 /**
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36 * CRI runtime implementation for the HotSpot VM.
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37 *
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38 * @author Thomas Wuerthinger, Lukas Stadler
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39 */
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40 public class HotSpotRuntime implements RiRuntime {
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41
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42 final HotSpotVMConfig config;
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43 final HotSpotRegisterConfig regConfig;
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44 final HotSpotRegisterConfig globalStubRegConfig;
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45
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46
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47 public HotSpotRuntime(HotSpotVMConfig config) {
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48 this.config = config;
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49 regConfig = new HotSpotRegisterConfig(config, false);
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50 globalStubRegConfig = new HotSpotRegisterConfig(config, true);
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51 }
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52
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53 @Override
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54 public int codeOffset() {
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55 return 0;
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56 }
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57
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58 @Override
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59 public String disassemble(byte[] code, long address) {
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60 return disassemble(code, new DisassemblyPrinter(false), address);
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61 }
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62
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63 private String disassemble(byte[] code, DisassemblyPrinter disassemblyPrinter, long address) {
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64 final ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
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65 final ISA instructionSet = ISA.AMD64;
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66 Disassembler.disassemble(byteArrayOutputStream, code, instructionSet, WordWidth.BITS_64, address, null, disassemblyPrinter);
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67 return byteArrayOutputStream.toString();
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68 }
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69
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70 @Override
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71 public String disassemble(final CiTargetMethod targetMethod) {
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72
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73 final DisassemblyPrinter disassemblyPrinter = new DisassemblyPrinter(false) {
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74
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75 private String toString(Call call) {
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76 if (call.runtimeCall != null) {
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77 return "{" + call.runtimeCall.name() + "}";
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78 } else if (call.symbol != null) {
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79 return "{" + call.symbol + "}";
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80 } else if (call.globalStubID != null) {
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81 return "{" + call.globalStubID + "}";
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82 } else {
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83 return "{" + call.method + "}";
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84 }
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85 }
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86
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87 private String siteInfo(int pcOffset) {
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88 for (Call call : targetMethod.directCalls) {
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89 if (call.pcOffset == pcOffset) {
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90 return toString(call);
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91 }
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92 }
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93 for (Call call : targetMethod.indirectCalls) {
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94 if (call.pcOffset == pcOffset) {
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95 return toString(call);
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96 }
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97 }
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98 for (Safepoint site : targetMethod.safepoints) {
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99 if (site.pcOffset == pcOffset) {
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100 return "{safepoint}";
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101 }
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102 }
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103 for (DataPatch site : targetMethod.dataReferences) {
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104 if (site.pcOffset == pcOffset) {
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105 return "{" + site.constant + "}";
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106 }
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107 }
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108 return null;
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109 }
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110
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111 @Override
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112 protected String disassembledObjectString(Disassembler disassembler, DisassembledObject disassembledObject) {
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113 final String string = super.disassembledObjectString(disassembler, disassembledObject);
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114
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115 String site = siteInfo(disassembledObject.startPosition());
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116 if (site != null) {
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117 return string + " " + site;
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118 }
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119 return string;
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120 }
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121 };
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122 final byte[] code = Arrays.copyOf(targetMethod.targetCode(), targetMethod.targetCodeSize());
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123 return disassemble(code, disassemblyPrinter, 0L);
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124 }
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125
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126 @Override
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127 public String disassemble(RiMethod method) {
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128 return "No disassembler available";
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129 }
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130
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131 @Override
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132 public RiConstantPool getConstantPool(RiMethod method) {
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133 return ((HotSpotTypeResolved) method.holder()).constantPool();
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134 }
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135
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136 @Override
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137 public RiOsrFrame getOsrFrame(RiMethod method, int bci) {
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138 return null;
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139 }
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140
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141 @Override
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142 public RiType getRiType(Class<?> javaClass) {
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143 return Compiler.getVMEntries().getType(javaClass);
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144 }
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145
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146 @Override
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147 public RiSnippets getSnippets() {
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148 throw new UnsupportedOperationException("getSnippets");
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149 }
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150
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151 @Override
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152 public boolean mustInline(RiMethod method) {
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153 return false;
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154 }
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155
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156 @Override
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157 public boolean mustNotCompile(RiMethod method) {
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158 return false;
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159 }
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160
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161 @Override
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162 public boolean mustNotInline(RiMethod method) {
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163 return Modifier.isNative(method.accessFlags());
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164 }
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165
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166 @Override
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167 public Object registerGlobalStub(CiTargetMethod targetMethod, String name) {
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168 return HotSpotTargetMethod.installStub(targetMethod, name);
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169 }
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170
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171 @Override
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172 public int sizeOfBasicObjectLock() {
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173 // TODO shouldn't be hard coded
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174 return 2 * 8;
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175 }
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176
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177 @Override
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178 public int basicObjectLockOffsetInBytes() {
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179 return 8;
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180 }
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181
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182 @Override
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183 public RiField getRiField(Field javaField) {
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184 throw new UnsupportedOperationException("getRiField");
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185 }
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186
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187 @Override
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188 public RiMethod getRiMethod(Method javaMethod) {
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189 throw new UnsupportedOperationException("getRiMethod");
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190 }
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191
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192 @Override
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193 public RiMethod getRiMethod(Constructor<?> javaConstructor) {
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194 throw new UnsupportedOperationException("getRiMethod");
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195 }
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196
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197 @Override
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198 public CiConstant invoke(RiMethod method, CiMethodInvokeArguments args) {
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199 return null;
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200 }
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201
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202 @Override
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203 public CiConstant foldWordOperation(int opcode, CiMethodInvokeArguments args) {
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204 throw new UnsupportedOperationException("foldWordOperation");
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205 }
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206
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207 @Override
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208 public boolean compareConstantObjects(Object x, Object y) {
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209 return x == y;
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210 }
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211
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212 @Override
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213 public boolean recordLeafMethodAssumption(RiMethod method) {
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214 return false;
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215 }
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216
1439
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217 @Override
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218 public RiRegisterConfig getRegisterConfig(RiMethod method) {
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219 return regConfig;
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220 }
1938
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221
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222 /**
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223 * HotSpots needs an area suitable for storing a program counter for temporary use during the deoptimization process.
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224 */
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225 @Override
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226 public int getCustomStackAreaSize() {
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227 return 8;
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228 }
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229 }