Mercurial > hg > graal-jvmci-8
annotate graal/GraalCompiler/src/com/sun/c1x/graph/IR.java @ 2783:9bc0c2eb00d6
Made graph builder removal of BlockBegin work.
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Wed, 25 May 2011 12:04:58 +0200 |
parents | 915456e4959e |
children | df4c5254c5cc |
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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.max.graal.schedule.*; |
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28 import com.sun.c1x.*; |
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29 import com.sun.c1x.debug.*; |
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30 import com.sun.c1x.ir.*; |
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31 import com.sun.c1x.lir.*; |
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32 import com.sun.c1x.observer.*; |
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33 |
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34 /** |
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35 * This class implements the overall container for the HIR (high-level IR) graph |
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36 * and directs its construction, optimization, and finalization. |
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37 */ |
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38 public class IR { |
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39 |
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40 /** |
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41 * The compilation associated with this IR. |
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42 */ |
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43 public final C1XCompilation compilation; |
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44 |
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45 /** |
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46 * The start block of this IR. |
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47 */ |
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48 public LIRBlock startBlock; |
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49 |
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50 private int maxLocks; |
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51 |
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52 /** |
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53 * The linear-scan ordered list of blocks. |
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54 */ |
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55 private List<LIRBlock> orderedBlocks; |
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56 |
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57 /** |
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58 * Creates a new IR instance for the specified compilation. |
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59 * @param compilation the compilation |
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60 */ |
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61 public IR(C1XCompilation compilation) { |
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62 this.compilation = compilation; |
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63 } |
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64 |
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65 public Map<Value, LIRBlock> valueToBlock; |
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66 |
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67 /** |
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68 * Builds the graph, optimizes it, and computes the linear scan block order. |
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69 */ |
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70 public void build() { |
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71 if (C1XOptions.PrintTimers) { |
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72 C1XTimers.HIR_CREATE.start(); |
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73 } |
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74 |
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75 buildGraph(); |
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76 |
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77 if (C1XOptions.PrintTimers) { |
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78 C1XTimers.HIR_CREATE.stop(); |
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79 C1XTimers.HIR_OPTIMIZE.start(); |
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80 } |
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81 |
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82 Schedule schedule = new Schedule(this.compilation.graph); |
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83 List<Block> blocks = schedule.getBlocks(); |
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84 List<LIRBlock> lirBlocks = new ArrayList<LIRBlock>(); |
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85 Map<Block, LIRBlock> map = new HashMap<Block, LIRBlock>(); |
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86 for (Block b : blocks) { |
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87 LIRBlock block = new LIRBlock(b.blockID()); |
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88 block.setExceptionEntry(b.isExceptionEntry()); |
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89 map.put(b, block); |
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90 block.setInstructions(b.getInstructions()); |
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91 block.setLinearScanNumber(b.blockID()); |
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92 lirBlocks.add(block); |
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93 } |
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94 |
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95 for (Block b : blocks) { |
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96 for (Block succ : b.getSuccessors()) { |
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97 if (succ.isExceptionEntry()) { |
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98 map.get(b).getExceptionHandlerSuccessors().add(map.get(succ)); |
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99 } else { |
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100 map.get(b).blockSuccessors().add(map.get(succ)); |
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101 } |
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102 } |
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103 |
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104 for (Block pred : b.getPredecessors()) { |
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105 map.get(b).blockPredecessors().add(map.get(pred)); |
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106 } |
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107 } |
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108 |
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109 |
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110 // TODO(tw): Schedule nodes within a block. |
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111 |
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112 |
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113 CriticalEdgeFinder finder = new CriticalEdgeFinder(lirBlocks, compilation.graph); |
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114 finder.splitCriticalEdges(); |
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115 |
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116 |
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117 orderedBlocks = lirBlocks; |
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118 |
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119 valueToBlock = new HashMap<Value, LIRBlock>(); |
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120 for (LIRBlock b : orderedBlocks) { |
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121 for (Instruction i : b.getInstructions()) { |
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122 valueToBlock.put(i, b); |
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123 } |
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124 } |
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125 startBlock = valueToBlock.get(getHIRStartBlock()); |
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126 assert startBlock != null; |
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127 verifyAndPrint("After linear scan order"); |
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128 |
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129 ComputeLinearScanOrder clso = new ComputeLinearScanOrder(lirBlocks.size(), startBlock); |
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130 orderedBlocks = clso.linearScanOrder(); |
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131 this.compilation.stats.loopCount = clso.numLoops(); |
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132 |
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133 int z = 0; |
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134 for (LIRBlock b : orderedBlocks) { |
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135 b.setLinearScanNumber(z++); |
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136 } |
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137 |
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138 |
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139 |
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140 if (C1XOptions.PrintTimers) { |
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141 C1XTimers.HIR_OPTIMIZE.stop(); |
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142 } |
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143 } |
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144 |
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145 private void buildGraph() { |
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146 // Graph builder must set the startBlock and the osrEntryBlock |
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147 new GraphBuilder(compilation, this, compilation.graph).build(); |
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148 verifyAndPrint("After graph building"); |
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149 |
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150 if (C1XOptions.PrintCompilation) { |
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151 TTY.print(String.format("%3d blocks | ", this.numberOfBlocks())); |
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152 } |
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153 } |
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154 |
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155 /** |
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156 * Gets the linear scan ordering of blocks as a list. |
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157 * @return the blocks in linear scan order |
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158 */ |
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159 public List<LIRBlock> linearScanOrder() { |
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160 return orderedBlocks; |
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161 } |
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162 |
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163 private void print(boolean cfgOnly) { |
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164 if (!TTY.isSuppressed()) { |
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165 TTY.println("IR for " + compilation.method); |
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166 final InstructionPrinter ip = new InstructionPrinter(TTY.out()); |
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167 final BlockPrinter bp = new BlockPrinter(this, ip, cfgOnly); |
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168 //getHIRStartBlock().iteratePreOrder(bp); |
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169 } |
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170 } |
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171 |
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172 /** |
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173 * Verifies the IR and prints it out if the relevant options are set. |
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174 * @param phase the name of the phase for printing |
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175 */ |
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176 public void verifyAndPrint(String phase) { |
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177 if (C1XOptions.PrintHIR && !TTY.isSuppressed()) { |
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178 TTY.println(phase); |
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179 print(false); |
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180 } |
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181 |
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182 if (compilation.compiler.isObserved()) { |
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183 compilation.compiler.fireCompilationEvent(new CompilationEvent(compilation, phase, getHIRStartBlock(), true, false)); |
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184 } |
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185 } |
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186 |
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187 |
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188 public int nextBlockNumber() { |
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189 return compilation.stats.blockCount++; |
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190 } |
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191 |
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192 public int numberOfBlocks() { |
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193 return compilation.stats.blockCount; |
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194 } |
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195 |
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196 public int numLoops() { |
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197 return compilation.stats.loopCount; |
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198 } |
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199 |
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200 /** |
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201 * Updates the maximum number of locks held at any one time. |
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202 * |
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203 * @param locks a lock count that will replace the current {@linkplain #maxLocks() max locks} if it is greater |
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204 */ |
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205 public void updateMaxLocks(int locks) { |
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206 if (locks > maxLocks) { |
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207 maxLocks = locks; |
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208 } |
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209 } |
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210 |
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211 /** |
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212 * Gets the number of locks. |
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213 * @return the number of locks |
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214 */ |
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215 public final int maxLocks() { |
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216 return maxLocks; |
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217 } |
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218 |
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219 public Instruction getHIRStartBlock() { |
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220 return (Instruction) compilation.graph.start().successors().get(0); |
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221 } |
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222 } |