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annotate graal/GraalCompiler/src/com/sun/c1x/asm/AbstractAssembler.java @ 2671:d8601d421b96

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New Deoptimize node, remove ResolveClass node and replace it with deoptimization
author Gilles Duboscq <gilles.duboscq@oracle.com>
date Thu, 12 May 2011 17:17:50 +0200
parents 46586c77b129
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 /*
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2 * Copyright (c) 2009, 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.c1x.asm;
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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.c1x.*;
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28 import com.sun.c1x.debug.*;
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29 import com.sun.c1x.ir.*;
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30 import com.sun.c1x.lir.*;
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31 import com.sun.c1x.util.*;
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32 import com.sun.cri.ci.*;
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33 import com.sun.cri.ci.CiTargetMethod.CodeComment;
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34 import com.sun.cri.ci.CiTargetMethod.Mark;
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35 import com.sun.cri.ri.*;
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36
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37 /**
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38 * @author Marcelo Cintra
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39 * @author Thomas Wuerthinger
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40 */
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41 public abstract class AbstractAssembler {
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42
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43 public final Buffer codeBuffer;
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44 public final CiTarget target;
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45 public final CiTargetMethod targetMethod;
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46 public List<ExceptionInfo> exceptionInfoList;
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47 protected int lastSafepointPos;
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48
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49 public AbstractAssembler(CiTarget target) {
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50 this.target = target;
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51 this.targetMethod = new CiTargetMethod();
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52 this.codeBuffer = new Buffer(target.arch.byteOrder);
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53 }
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54
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55 public final void bind(Label l) {
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56 assert !l.isBound() : "can bind label only once";
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57 l.bind(codeBuffer.position());
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58 l.patchInstructions(this);
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59 }
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60
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61 public void setFrameSize(int frameSize) {
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62 targetMethod.setFrameSize(frameSize);
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63 }
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64
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65 public CiTargetMethod finishTargetMethod(Object name, RiRuntime runtime, int registerRestoreEpilogueOffset, boolean isStub) {
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66 // Install code, data and frame size
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67 targetMethod.setTargetCode(codeBuffer.close(false), codeBuffer.position());
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68 targetMethod.setRegisterRestoreEpilogueOffset(registerRestoreEpilogueOffset);
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69
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70 // Record exception handlers if they exist
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71 if (exceptionInfoList != null) {
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72 for (ExceptionInfo ei : exceptionInfoList) {
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73 int codeOffset = ei.codeOffset;
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74 for (ExceptionHandler handler : ei.exceptionHandlers) {
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75 int entryOffset = handler.entryCodeOffset();
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76 RiType caughtType = handler.handler.catchType();
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77 targetMethod.recordExceptionHandler(codeOffset, ei.bci, 0, entryOffset, handler.handlerBCI(), caughtType);
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78 }
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79 }
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80 }
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81
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82 if (C1XOptions.PrintMetrics) {
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83 C1XMetrics.TargetMethods++;
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84 C1XMetrics.CodeBytesEmitted += targetMethod.targetCodeSize();
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85 C1XMetrics.SafepointsEmitted += targetMethod.safepoints.size();
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86 C1XMetrics.DirectCallSitesEmitted += targetMethod.directCalls.size();
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87 C1XMetrics.IndirectCallSitesEmitted += targetMethod.indirectCalls.size();
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88 C1XMetrics.DataPatches += targetMethod.dataReferences.size();
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89 C1XMetrics.ExceptionHandlersEmitted += targetMethod.exceptionHandlers.size();
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90 }
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91
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92 if (C1XOptions.PrintAssembly && !TTY.isSuppressed() && !isStub) {
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93 Util.printSection("Target Method", Util.SECTION_CHARACTER);
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94 TTY.println("Name: " + name);
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95 TTY.println("Frame size: " + targetMethod.frameSize());
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96 TTY.println("Register size: " + target.arch.registerReferenceMapBitCount);
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97
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98 if (C1XOptions.PrintCodeBytes) {
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99 Util.printSection("Code", Util.SUB_SECTION_CHARACTER);
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100 TTY.println("Code: %d bytes", targetMethod.targetCodeSize());
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101 Util.printBytes(0L, targetMethod.targetCode(), 0, targetMethod.targetCodeSize(), C1XOptions.PrintAssemblyBytesPerLine);
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102 }
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103
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104 Util.printSection("Disassembly", Util.SUB_SECTION_CHARACTER);
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105 String disassembly = runtime.disassemble(targetMethod);
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106 TTY.println(disassembly);
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107 boolean noDis = disassembly == null || disassembly.length() == 0;
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108
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109 Util.printSection("Safepoints", Util.SUB_SECTION_CHARACTER);
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110 for (CiTargetMethod.Safepoint x : targetMethod.safepoints) {
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111 TTY.println(x.toString());
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112 if (noDis && x.debugInfo != null) {
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113 TTY.println(CiUtil.indent(x.debugInfo.toString(), " "));
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114 }
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115 }
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116
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117 Util.printSection("Direct Call Sites", Util.SUB_SECTION_CHARACTER);
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118 for (CiTargetMethod.Call x : targetMethod.directCalls) {
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119 TTY.println(x.toString());
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120 if (noDis && x.debugInfo != null) {
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121 TTY.println(CiUtil.indent(x.debugInfo.toString(), " "));
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122 }
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123 }
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124
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125 Util.printSection("Indirect Call Sites", Util.SUB_SECTION_CHARACTER);
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126 for (CiTargetMethod.Call x : targetMethod.indirectCalls) {
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127 TTY.println(x.toString());
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128 if (noDis && x.debugInfo != null) {
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129 TTY.println(CiUtil.indent(x.debugInfo.toString(), " "));
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130 }
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131 }
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132
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133 Util.printSection("Data Patches", Util.SUB_SECTION_CHARACTER);
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134 for (CiTargetMethod.DataPatch x : targetMethod.dataReferences) {
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135 TTY.println(x.toString());
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136 }
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137
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138 Util.printSection("Marks", Util.SUB_SECTION_CHARACTER);
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139 for (CiTargetMethod.Mark x : targetMethod.marks) {
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140 TTY.println(x.toString());
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141 }
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142
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143 Util.printSection("Exception Handlers", Util.SUB_SECTION_CHARACTER);
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144 for (CiTargetMethod.ExceptionHandler x : targetMethod.exceptionHandlers) {
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145 TTY.println(x.toString());
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146 }
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147 }
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148
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149 return targetMethod;
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150 }
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151
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152 public void recordExceptionHandlers(int pcOffset, LIRDebugInfo info) {
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153 if (info != null) {
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154 if (info.exceptionHandlers != null) {
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155 if (exceptionInfoList == null) {
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156 exceptionInfoList = new ArrayList<ExceptionInfo>(4);
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157 }
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158 exceptionInfoList.add(new ExceptionInfo(pcOffset, info.exceptionHandlers, info.state.bci));
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159 }
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160 }
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161 }
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162
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163 public void recordImplicitException(int pcOffset, LIRDebugInfo info) {
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164 // record an implicit exception point
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165 if (info != null) {
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166 assert lastSafepointPos < pcOffset;
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167 lastSafepointPos = pcOffset;
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168 targetMethod.recordSafepoint(pcOffset, info.debugInfo());
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169 recordExceptionHandlers(pcOffset, info);
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170 }
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171 }
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172
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173 protected void recordDirectCall(int posBefore, int posAfter, Object target, LIRDebugInfo info) {
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174 CiDebugInfo debugInfo = info != null ? info.debugInfo() : null;
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175 assert lastSafepointPos < posAfter;
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176 lastSafepointPos = posAfter;
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177 targetMethod.recordCall(posBefore, target, debugInfo, true);
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178 }
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179
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180 protected void recordIndirectCall(int posBefore, int posAfter, Object target, LIRDebugInfo info) {
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181 CiDebugInfo debugInfo = info != null ? info.debugInfo() : null;
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182 assert lastSafepointPos < posAfter;
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183 lastSafepointPos = posAfter;
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184 targetMethod.recordCall(posBefore, target, debugInfo, false);
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185 }
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186
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187 public void recordSafepoint(int pos, LIRDebugInfo info) {
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188 // safepoints always need debug info
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189 CiDebugInfo debugInfo = info.debugInfo();
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190 assert lastSafepointPos < pos;
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191 lastSafepointPos = pos;
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192 targetMethod.recordSafepoint(pos, debugInfo);
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193 }
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194
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195 public CiAddress recordDataReferenceInCode(CiConstant data) {
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196 assert data != null;
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197
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198 int pos = codeBuffer.position();
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199
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200 if (C1XOptions.TraceRelocation) {
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201 TTY.print("Data reference in code: pos = %d, data = %s", pos, data.toString());
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202 }
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203
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204 targetMethod.recordDataReference(pos, data);
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205 return CiAddress.Placeholder;
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206 }
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207
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208 public Mark recordMark(Object id, Mark[] references) {
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209 return targetMethod.recordMark(codeBuffer.position(), id, references);
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210 }
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211
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212 public abstract void nop();
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213
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214 public abstract void nullCheck(CiRegister r);
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215
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216 public abstract void align(int codeEntryAlignment);
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217
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218 public abstract void patchJumpTarget(int branch, int target);
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219
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220 public final void emitByte(int x) {
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221 codeBuffer.emitByte(x);
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222 }
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223
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224 public final void emitShort(int x) {
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225 codeBuffer.emitShort(x);
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226 }
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227
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228 public final void emitInt(int x) {
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229 codeBuffer.emitInt(x);
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230 }
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231
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232 public final void emitLong(long x) {
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233 codeBuffer.emitLong(x);
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234 }
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235
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236 public void blockComment(String s) {
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237 targetMethod.addAnnotation(new CodeComment(codeBuffer.position(), s));
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238 }
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239
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240 public int lastSafepointPos() {
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241 return lastSafepointPos;
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242 }
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243 }