Mercurial > hg > graal-jvmci-8
annotate graal/GraalCompiler/src/com/sun/c1x/graph/IR.java @ 2779:93ec3f067420
Changed CriticalEdgeFinder to use LIRBlock.
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Wed, 25 May 2011 11:04:59 +0200 |
parents | 2ac7b30b7290 |
children | 79dda81dd337 |
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.graph; |
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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.oracle.graal.graph.*; |
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28 import com.oracle.max.graal.schedule.*; |
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29 import com.sun.c1x.*; |
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30 import com.sun.c1x.debug.*; |
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31 import com.sun.c1x.ir.*; |
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32 import com.sun.c1x.lir.*; |
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33 import com.sun.c1x.observer.*; |
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34 |
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35 /** |
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36 * This class implements the overall container for the HIR (high-level IR) graph |
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37 * and directs its construction, optimization, and finalization. |
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38 */ |
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39 public class IR { |
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40 |
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41 /** |
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42 * The compilation associated with this IR. |
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43 */ |
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44 public final C1XCompilation compilation; |
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45 |
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46 /** |
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47 * The start block of this IR. |
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48 */ |
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49 public LIRBlock startBlock; |
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50 |
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51 private int maxLocks; |
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52 |
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53 /** |
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54 * The linear-scan ordered list of blocks. |
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55 */ |
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56 private List<LIRBlock> orderedBlocks; |
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57 |
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58 /** |
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59 * Creates a new IR instance for the specified compilation. |
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60 * @param compilation the compilation |
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61 */ |
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62 public IR(C1XCompilation compilation) { |
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63 this.compilation = compilation; |
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64 } |
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65 |
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66 public Map<Value, LIRBlock> valueToBlock; |
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67 |
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68 /** |
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69 * Builds the graph, optimizes it, and computes the linear scan block order. |
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70 */ |
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71 public void build() { |
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72 if (C1XOptions.PrintTimers) { |
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73 C1XTimers.HIR_CREATE.start(); |
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74 } |
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75 |
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76 buildGraph(); |
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77 |
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78 if (C1XOptions.PrintTimers) { |
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79 C1XTimers.HIR_CREATE.stop(); |
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80 C1XTimers.HIR_OPTIMIZE.start(); |
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81 } |
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82 |
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83 Schedule schedule = new Schedule(this.compilation.graph); |
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84 List<Block> blocks = schedule.getBlocks(); |
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85 List<LIRBlock> lirBlocks = new ArrayList<LIRBlock>(); |
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86 Map<Block, LIRBlock> map = new HashMap<Block, LIRBlock>(); |
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87 for (Block b : blocks) { |
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88 LIRBlock block = new LIRBlock(b.blockID()); |
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89 block.setExceptionEntry(b.isExceptionEntry()); |
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90 map.put(b, block); |
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91 block.setInstructions(b.getInstructions()); |
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92 block.setLinearScanNumber(b.blockID()); |
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93 lirBlocks.add(block); |
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94 } |
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95 |
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96 for (Block b : blocks) { |
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97 for (Block succ : b.getSuccessors()) { |
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98 if (succ.isExceptionEntry()) { |
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99 map.get(b).getExceptionHandlerSuccessors().add(map.get(succ)); |
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100 } else { |
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101 map.get(b).blockSuccessors().add(map.get(succ)); |
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102 } |
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103 } |
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104 |
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105 for (Block pred : b.getPredecessors()) { |
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106 map.get(b).blockPredecessors().add(map.get(pred)); |
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107 } |
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108 } |
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109 |
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110 |
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111 // TODO(tw): Schedule nodes within a block. |
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112 //computeLinearScanOrder(); |
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113 |
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114 // assert orderedBlocks.size() == lirBlocks.size(); |
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115 |
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116 |
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117 CriticalEdgeFinder finder = new CriticalEdgeFinder(lirBlocks, compilation.graph); |
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118 finder.splitCriticalEdges(); |
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119 |
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120 |
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121 orderedBlocks = lirBlocks; |
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122 |
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123 valueToBlock = new HashMap<Value, LIRBlock>(); |
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124 for (LIRBlock b : orderedBlocks) { |
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125 for (Instruction i : b.getInstructions()) { |
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126 valueToBlock.put(i, b); |
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127 } |
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128 } |
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129 startBlock = valueToBlock.get(getHIRStartBlock()); |
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130 assert startBlock != null; |
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131 verifyAndPrint("After linear scan order"); |
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132 |
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133 ComputeLinearScanOrder clso = new ComputeLinearScanOrder(lirBlocks.size(), startBlock); |
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134 orderedBlocks = clso.linearScanOrder(); |
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135 this.compilation.stats.loopCount = clso.numLoops(); |
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136 |
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137 int z = 0; |
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138 for (LIRBlock b : orderedBlocks) { |
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139 b.setLinearScanNumber(z++); |
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140 |
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141 /* TTY.println(); |
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142 |
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143 for (Instruction i : b.getInstructions()) { |
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144 if (i instanceof BlockBegin) { |
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145 TTY.println("BlockBegin #" + ((BlockBegin) i).blockID); |
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146 |
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147 TTY.print(" => succs: "); |
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148 for (LIRBlock succBlock : b.blockSuccessors()) { |
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149 TTY.print("B#" + ((BlockBegin) succBlock.getInstructions().get(0)).blockID); |
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150 } |
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151 TTY.print(" => ex: "); |
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152 for (LIRBlock succBlock : b.getExceptionHandlerSuccessors()) { |
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153 TTY.print("B#" + ((BlockBegin) succBlock.getInstructions().get(0)).blockID); |
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154 } |
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155 TTY.println(); |
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156 } else { |
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157 TTY.println(i.getClass().getSimpleName() + " #" + i.id()); |
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158 } |
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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 |
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164 if (C1XOptions.PrintTimers) { |
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165 C1XTimers.HIR_OPTIMIZE.stop(); |
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166 } |
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167 } |
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168 |
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169 private void buildGraph() { |
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170 // Graph builder must set the startBlock and the osrEntryBlock |
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171 new GraphBuilder(compilation, this, compilation.graph).build(); |
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172 verifyAndPrint("After graph building"); |
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173 |
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174 if (C1XOptions.PrintCompilation) { |
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175 TTY.print(String.format("%3d blocks | ", this.numberOfBlocks())); |
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176 } |
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177 } |
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178 |
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179 private Map<Value, LIRBlock> computeLinearScanOrder() { |
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180 return makeLinearScanOrder(); |
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181 } |
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182 |
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183 private Map<Value, LIRBlock> makeLinearScanOrder() { |
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184 /* |
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185 if (orderedBlocks == null) { |
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186 |
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187 Map<Value, LIRBlock> valueToBlock = new HashMap<Value, LIRBlock>(); |
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188 ComputeLinearScanOrder computeLinearScanOrder = new ComputeLinearScanOrder(compilation.stats.blockCount, getHIRStartBlock()); |
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189 List<BlockBegin> blocks = computeLinearScanOrder.linearScanOrder(); |
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190 orderedBlocks = new ArrayList<LIRBlock>(); |
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191 |
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192 int z = 0; |
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193 for (BlockBegin bb : blocks) { |
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194 LIRBlock lirBlock = new LIRBlock(z); |
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195 lirBlock.getInstructions().add(bb); |
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196 valueToBlock.put(bb, lirBlock); |
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197 lirBlock.setLinearScanNumber(bb.linearScanNumber()); |
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198 // TODO(tw): Initialize LIRBlock.linearScanLoopHeader and LIRBlock.linearScanLoopEnd |
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199 orderedBlocks.add(lirBlock); |
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200 ++z; |
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201 } |
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202 |
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203 z = 0; |
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204 for (BlockBegin bb : blocks) { |
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205 LIRBlock lirBlock = orderedBlocks.get(z); |
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206 for (int i = 0; i < bb.numberOfPreds(); ++i) { |
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207 lirBlock.blockPredecessors().add(valueToBlock.get(bb.predAt(i).block())); |
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208 } |
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209 |
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210 BlockEnd end = bb.end(); |
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211 for (int i = 0; i < end.blockSuccessorCount(); ++i) { |
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212 lirBlock.blockSuccessors().add(valueToBlock.get(end.blockSuccessor(i))); |
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213 } |
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214 |
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215 Instruction first = bb; |
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216 while (first != null) { |
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217 lirBlock.getInstructions().add(first); |
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218 first = first.next(); |
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219 } |
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220 ++z; |
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221 } |
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222 |
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223 }*/ |
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224 return null; |
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225 //return valueToBlock; |
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226 } |
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227 |
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228 /** |
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229 * Gets the linear scan ordering of blocks as a list. |
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230 * @return the blocks in linear scan order |
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231 */ |
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232 public List<LIRBlock> linearScanOrder() { |
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233 return orderedBlocks; |
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234 } |
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235 |
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236 private void print(boolean cfgOnly) { |
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237 if (!TTY.isSuppressed()) { |
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238 TTY.println("IR for " + compilation.method); |
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239 final InstructionPrinter ip = new InstructionPrinter(TTY.out()); |
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240 final BlockPrinter bp = new BlockPrinter(this, ip, cfgOnly); |
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241 getHIRStartBlock().iteratePreOrder(bp); |
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242 } |
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243 } |
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244 |
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245 /** |
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246 * Verifies the IR and prints it out if the relevant options are set. |
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247 * @param phase the name of the phase for printing |
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248 */ |
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249 public void verifyAndPrint(String phase) { |
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250 if (C1XOptions.PrintHIR && !TTY.isSuppressed()) { |
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251 TTY.println(phase); |
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252 print(false); |
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253 } |
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254 |
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255 if (compilation.compiler.isObserved()) { |
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256 compilation.compiler.fireCompilationEvent(new CompilationEvent(compilation, phase, getHIRStartBlock(), true, false)); |
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257 } |
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258 } |
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259 |
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260 |
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261 public int nextBlockNumber() { |
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262 return compilation.stats.blockCount++; |
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263 } |
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264 |
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265 public int numberOfBlocks() { |
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266 return compilation.stats.blockCount; |
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267 } |
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268 |
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269 public int numLoops() { |
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270 return compilation.stats.loopCount; |
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271 } |
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272 |
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273 /** |
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274 * Updates the maximum number of locks held at any one time. |
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275 * |
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276 * @param locks a lock count that will replace the current {@linkplain #maxLocks() max locks} if it is greater |
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277 */ |
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278 public void updateMaxLocks(int locks) { |
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279 if (locks > maxLocks) { |
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280 maxLocks = locks; |
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281 } |
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282 } |
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283 |
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284 /** |
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285 * Gets the number of locks. |
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286 * @return the number of locks |
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287 */ |
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288 public final int maxLocks() { |
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289 return maxLocks; |
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290 } |
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291 |
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292 public BlockBegin getHIRStartBlock() { |
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293 return (BlockBegin) compilation.graph.start().successors().get(0); |
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294 } |
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295 } |