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annotate graal/GraalCompiler/src/com/sun/c1x/C1XCompilation.java @ 2515:4fdef1464592

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Removed extended bytecodes and related HIR instructions.
author Thomas Wuerthinger <thomas@wuerthinger.net>
date Wed, 27 Apr 2011 15:36:29 +0200
parents 16b9a8b5ad39
children a384fac3fd34
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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2507
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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
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24 package com.sun.c1x;
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25
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26 import java.util.*;
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27
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28 import com.sun.c1x.alloc.*;
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29 import com.sun.c1x.asm.*;
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30 import com.sun.c1x.gen.*;
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31 import com.sun.c1x.gen.LIRGenerator.DeoptimizationStub;
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32 import com.sun.c1x.graph.*;
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33 import com.sun.c1x.ir.*;
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34 import com.sun.c1x.lir.*;
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35 import com.sun.c1x.observer.*;
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36 import com.sun.c1x.value.*;
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37 import com.sun.cri.ci.*;
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38 import com.sun.cri.ri.*;
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39
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40 /**
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41 * This class encapsulates global information about the compilation of a particular method,
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42 * including a reference to the runtime, statistics about the compiled code, etc.
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43 *
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44 * @author Ben L. Titzer
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45 */
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46 public final class C1XCompilation {
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47
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48 private static ThreadLocal<C1XCompilation> currentCompilation = new ThreadLocal<C1XCompilation>();
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49
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50 public final C1XCompiler compiler;
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51 public final CiTarget target;
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52 public final RiRuntime runtime;
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53 public final RiMethod method;
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54 public final RiRegisterConfig registerConfig;
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55 public final CiStatistics stats;
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56 public final int osrBCI;
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57 public final CiAssumptions assumptions = new CiAssumptions();
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58 public final FrameState placeholderState;
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59
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60 private boolean hasExceptionHandlers;
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61 private final C1XCompilation parent;
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62
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63 /**
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64 * @see #setNotTypesafe()
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65 * @see #isTypesafe()
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66 */
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67 private boolean typesafe = true;
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68
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69 private int nextID = 1;
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70
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71 private FrameMap frameMap;
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72 private AbstractAssembler assembler;
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73
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74 private IR hir;
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75
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76 private LIRGenerator lirGenerator;
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77
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78 /**
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79 * Creates a new compilation for the specified method and runtime.
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80 *
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81 * @param compiler the compiler
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82 * @param method the method to be compiled or {@code null} if generating code for a stub
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83 * @param osrBCI the bytecode index for on-stack replacement, if requested
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84 * @param stats externally supplied statistics object to be used if not {@code null}
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85 */
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86 public C1XCompilation(C1XCompiler compiler, RiMethod method, int osrBCI, CiStatistics stats) {
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87 this.parent = currentCompilation.get();
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88 currentCompilation.set(this);
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89 this.compiler = compiler;
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90 this.target = compiler.target;
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91 this.runtime = compiler.runtime;
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92 this.method = method;
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93 this.osrBCI = osrBCI;
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94 this.stats = stats == null ? new CiStatistics() : stats;
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95 this.registerConfig = method == null ? compiler.globalStubRegisterConfig : runtime.getRegisterConfig(method);
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96 this.placeholderState = method != null && method.minimalDebugInfo() ? new MutableFrameState(new IRScope(null, null, method, -1), 0, 0, 0) : null;
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97
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98 if (compiler.isObserved()) {
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99 compiler.fireCompilationStarted(new CompilationEvent(this));
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100 }
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101 }
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102
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103 public void close() {
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104 currentCompilation.set(parent);
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105 }
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106
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107 public IR hir() {
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108 return hir;
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109 }
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110
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111 /**
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112 * Records that this compilation has exception handlers.
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113 */
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114 public void setHasExceptionHandlers() {
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115 hasExceptionHandlers = true;
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116 }
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117
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118 /**
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119 * Checks whether this compilation is for an on-stack replacement.
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120 *
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121 * @return {@code true} if this compilation is for an on-stack replacement
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122 */
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123 public boolean isOsrCompilation() {
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124 return osrBCI >= 0;
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125 }
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126
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127 /**
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128 * Translates a given kind to a canonical architecture kind.
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129 * This is an identity function for all but {@link CiKind#Word}
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130 * which is translated to {@link CiKind#Int} or {@link CiKind#Long}
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131 * depending on whether or not this is a {@linkplain #is64Bit() 64-bit}
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132 * compilation.
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133 */
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134 public CiKind archKind(CiKind kind) {
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135 if (kind.isWord()) {
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136 return target.arch.is64bit() ? CiKind.Long : CiKind.Int;
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137 }
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138 return kind;
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139 }
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140
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141 /**
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142 * Determines if two given kinds are equal at the {@linkplain #archKind(CiKind) architecture} level.
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143 */
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144 public boolean archKindsEqual(CiKind kind1, CiKind kind2) {
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145 return archKind(kind1) == archKind(kind2);
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146 }
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147
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148 /**
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149 * Gets the frame which describes the layout of the OSR interpreter frame for this method.
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150 *
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151 * @return the OSR frame
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152 */
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153 public RiOsrFrame getOsrFrame() {
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154 return runtime.getOsrFrame(method, osrBCI);
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155 }
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156
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157 /**
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158 * Records an assumption that the specified type has no finalizable subclasses.
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159 *
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160 * @param receiverType the type that is assumed to have no finalizable subclasses
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161 * @return {@code true} if the assumption was recorded and can be assumed; {@code false} otherwise
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162 */
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163 public boolean recordNoFinalizableSubclassAssumption(RiType receiverType) {
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164 return false;
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165 }
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166
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167 /**
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168 * Converts this compilation to a string.
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169 *
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170 * @return a string representation of this compilation
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171 */
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172 @Override
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173 public String toString() {
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174 if (isOsrCompilation()) {
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175 return "osr-compile @ " + osrBCI + ": " + method;
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176 }
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177 return "compile: " + method;
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178 }
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179
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180 /**
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181 * Builds the block map for the specified method.
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182 *
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183 * @param method the method for which to build the block map
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184 * @param osrBCI the OSR bytecode index; {@code -1} if this is not an OSR
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185 * @return the block map for the specified method
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186 */
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187 public BlockMap getBlockMap(RiMethod method, int osrBCI) {
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188 // PERF: cache the block map for methods that are compiled or inlined often
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189 BlockMap map = new BlockMap(method, hir.numberOfBlocks());
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190 boolean isOsrCompilation = false;
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191 if (osrBCI >= 0) {
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192 map.addEntrypoint(osrBCI, BlockBegin.BlockFlag.OsrEntry);
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193 isOsrCompilation = true;
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194 }
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195 if (!map.build(!isOsrCompilation && C1XOptions.PhiLoopStores)) {
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196 throw new CiBailout("build of BlockMap failed for " + method);
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197 } else {
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198 if (compiler.isObserved()) {
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199 String label = CiUtil.format("BlockListBuilder %f %r %H.%n(%p)", method, true);
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200 compiler.fireCompilationEvent(new CompilationEvent(this, label, map, method.code().length));
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201 }
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202 }
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203 map.cleanup();
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204 stats.bytecodeCount += map.numberOfBytes();
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205 stats.blockCount += map.numberOfBlocks();
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206 return map;
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207 }
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208
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209 /**
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210 * Returns the frame map of this compilation.
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211 * @return the frame map
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212 */
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213 public FrameMap frameMap() {
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214 return frameMap;
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215 }
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216
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217 public AbstractAssembler masm() {
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218 if (assembler == null) {
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219 assembler = compiler.backend.newAssembler(registerConfig);
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220 assembler.setFrameSize(frameMap.frameSize());
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221 assembler.targetMethod.setCustomStackAreaOffset(frameMap.offsetToCustomArea());
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222 }
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223 return assembler;
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224 }
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225
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226 public boolean hasExceptionHandlers() {
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227 return hasExceptionHandlers;
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228 }
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229
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230 public CiResult compile() {
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231 CiTargetMethod targetMethod;
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232 try {
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233 emitHIR();
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234 emitLIR();
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235 targetMethod = emitCode();
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236
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237 if (C1XOptions.PrintMetrics) {
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238 C1XMetrics.BytecodesCompiled += method.code().length;
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239 }
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240 } catch (CiBailout b) {
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241 return new CiResult(null, b, stats);
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242 } catch (Throwable t) {
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243 return new CiResult(null, new CiBailout("Exception while compiling: " + method, t), stats);
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244 } finally {
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245 if (compiler.isObserved()) {
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246 compiler.fireCompilationFinished(new CompilationEvent(this));
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247 }
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248 }
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249
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250 return new CiResult(targetMethod, null, stats);
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251 }
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252
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253 public IR emitHIR() {
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254 hir = new IR(this);
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255 hir.build();
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256 return hir;
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257 }
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258
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259 public void initFrameMap(int numberOfLocks) {
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260 frameMap = this.compiler.backend.newFrameMap(method, numberOfLocks);
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261 }
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262
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263 private void emitLIR() {
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264 if (C1XOptions.GenLIR) {
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265 if (C1XOptions.PrintTimers) {
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266 C1XTimers.LIR_CREATE.start();
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267 }
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268
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269 initFrameMap(hir.topScope.maxLocks());
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270
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271 lirGenerator = compiler.backend.newLIRGenerator(this);
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272 for (BlockBegin begin : hir.linearScanOrder()) {
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273 lirGenerator.doBlock(begin);
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274 }
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275
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276 if (C1XOptions.PrintTimers) {
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277 C1XTimers.LIR_CREATE.stop();
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278 }
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279
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280 new LinearScan(this, hir, lirGenerator, frameMap()).allocate();
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281 }
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282 }
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283
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284 private CiTargetMethod emitCode() {
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285 if (C1XOptions.GenLIR && C1XOptions.GenCode) {
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286 final LIRAssembler lirAssembler = compiler.backend.newLIRAssembler(this);
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287 lirAssembler.emitCode(hir.linearScanOrder());
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288
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289 // generate code for slow cases
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290 lirAssembler.emitLocalStubs();
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291
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292 // generate exception adapters
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293 lirAssembler.emitExceptionEntries();
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294
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295 // generate deoptimization stubs
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296 ArrayList<DeoptimizationStub> deoptimizationStubs = lirGenerator.deoptimizationStubs();
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297 if (deoptimizationStubs != null) {
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298 for (DeoptimizationStub stub : deoptimizationStubs) {
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299 lirAssembler.emitDeoptizationStub(stub);
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300 }
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301 }
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302
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303 // generate traps at the end of the method
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304 lirAssembler.emitTraps();
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305
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306 CiTargetMethod targetMethod = masm().finishTargetMethod(method, runtime, lirAssembler.registerRestoreEpilogueOffset, false);
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307 if (assumptions.count() > 0) {
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308 targetMethod.setAssumptions(assumptions);
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309 }
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310
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311 if (compiler.isObserved()) {
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312 compiler.fireCompilationEvent(new CompilationEvent(this, "After code generation", hir.startBlock, false, true, targetMethod));
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313 }
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314
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315 if (C1XOptions.PrintTimers) {
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316 C1XTimers.CODE_CREATE.stop();
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317 }
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318 return targetMethod;
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319 }
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320
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321 return null;
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322 }
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323
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324 public int nextID() {
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325 return nextID++;
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326 }
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327
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328 public static C1XCompilation compilation() {
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329 C1XCompilation compilation = currentCompilation.get();
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330 assert compilation != null;
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331 return compilation;
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332 }
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333
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334 public static C1XCompilation compilationOrNull() {
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335 return currentCompilation.get();
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336 }
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337 }