Mercurial > hg > graal-compiler
annotate graal/GraalCompiler/src/com/sun/c1x/graph/IR.java @ 2838:adc4b3ec0a8c
Deleted LIR critical edge splitter and replaced with GraalIR edge splitter using Anchor nodes (=> simpler).
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Tue, 31 May 2011 15:17:55 +0200 |
parents | c1c8a0291771 |
children | 633e66de40fe |
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.gen.*; |
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32 import com.sun.c1x.ir.*; |
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33 import com.sun.c1x.lir.*; |
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34 import com.sun.c1x.observer.*; |
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35 |
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36 /** |
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37 * This class implements the overall container for the HIR (high-level IR) graph |
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38 * and directs its construction, optimization, and finalization. |
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39 */ |
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40 public class IR { |
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41 |
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42 /** |
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43 * The compilation associated with this IR. |
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44 */ |
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45 public final C1XCompilation compilation; |
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46 |
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47 /** |
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48 * The start block of this IR. |
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49 */ |
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50 public LIRBlock startBlock; |
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51 |
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52 private int maxLocks; |
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53 |
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54 /** |
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55 * The linear-scan ordered list of blocks. |
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56 */ |
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57 private List<LIRBlock> orderedBlocks; |
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58 |
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59 /** |
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60 * Creates a new IR instance for the specified compilation. |
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61 * @param compilation the compilation |
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62 */ |
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63 public IR(C1XCompilation compilation) { |
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64 this.compilation = compilation; |
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65 } |
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66 |
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67 public Map<Node, LIRBlock> valueToBlock; |
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68 |
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69 /** |
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70 * Builds the graph, optimizes it, and computes the linear scan block order. |
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71 */ |
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72 public void build() { |
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73 if (C1XOptions.PrintTimers) { |
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74 C1XTimers.HIR_CREATE.start(); |
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75 } |
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76 |
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77 buildGraph(); |
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78 |
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79 if (C1XOptions.PrintTimers) { |
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80 C1XTimers.HIR_CREATE.stop(); |
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81 C1XTimers.HIR_OPTIMIZE.start(); |
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82 } |
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83 |
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84 new PhiSimplifier(this); |
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85 |
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86 // Graph newGraph = new Graph(); |
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87 // HashMap<Node, Node> replacement = new HashMap<Node, Node>(); |
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88 // replacement.put(compilation.graph.start(), newGraph.start()); |
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89 // replacement.put(compilation.graph.end(), newGraph.end()); |
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90 // newGraph.addDuplicate(compilation.graph.getNodes(), replacement); |
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91 // compilation.graph = newGraph; |
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92 |
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93 Graph graph = compilation.graph; |
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94 |
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95 // Split critical edges. |
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96 List<Node> nodes = graph.getNodes(); |
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97 for (int i = 0; i < nodes.size(); ++i) { |
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98 Node n = nodes.get(i); |
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99 if (Schedule.trueSuccessorCount(n) > 1) { |
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100 for (int j = 0; j < n.successors().size(); ++j) { |
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101 Node succ = n.successors().get(j); |
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102 if (Schedule.truePredecessorCount(succ) > 1) { |
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103 Anchor a = new Anchor(null, graph); |
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104 a.successors().setAndClear(1, n, j); |
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105 n.successors().set(j, a); |
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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 |
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111 Schedule schedule = new Schedule(graph); |
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112 List<Block> blocks = schedule.getBlocks(); |
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113 List<LIRBlock> lirBlocks = new ArrayList<LIRBlock>(); |
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114 Map<Block, LIRBlock> map = new HashMap<Block, LIRBlock>(); |
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115 for (Block b : blocks) { |
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116 LIRBlock block = new LIRBlock(b.blockID()); |
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117 map.put(b, block); |
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118 block.setInstructions(b.getInstructions()); |
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119 block.setLinearScanNumber(b.blockID()); |
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120 |
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121 block.setFirstInstruction(b.firstNode()); |
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122 block.setLastInstruction(b.lastNode()); |
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123 lirBlocks.add(block); |
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124 } |
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125 |
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126 for (Block b : blocks) { |
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127 for (Block succ : b.getSuccessors()) { |
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128 map.get(b).blockSuccessors().add(map.get(succ)); |
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129 } |
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130 |
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131 for (Block pred : b.getPredecessors()) { |
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132 map.get(b).blockPredecessors().add(map.get(pred)); |
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133 } |
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134 } |
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135 |
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136 orderedBlocks = lirBlocks; |
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137 valueToBlock = new HashMap<Node, LIRBlock>(); |
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138 for (LIRBlock b : orderedBlocks) { |
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139 for (Node i : b.getInstructions()) { |
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140 valueToBlock.put(i, b); |
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141 } |
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142 } |
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143 startBlock = lirBlocks.get(0); |
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144 assert startBlock != null; |
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145 assert startBlock.blockPredecessors().size() == 0; |
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146 |
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147 ComputeLinearScanOrder clso = new ComputeLinearScanOrder(lirBlocks.size(), startBlock); |
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148 orderedBlocks = clso.linearScanOrder(); |
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149 this.compilation.stats.loopCount = clso.numLoops(); |
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150 |
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151 int z = 0; |
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152 for (LIRBlock b : orderedBlocks) { |
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153 b.setLinearScanNumber(z++); |
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154 } |
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155 |
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156 verifyAndPrint("After linear scan order"); |
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157 |
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158 if (C1XOptions.PrintTimers) { |
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159 C1XTimers.HIR_OPTIMIZE.stop(); |
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160 } |
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161 } |
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162 |
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163 private void buildGraph() { |
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164 // Graph builder must set the startBlock and the osrEntryBlock |
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165 new GraphBuilder(compilation, this, compilation.graph).build(); |
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166 |
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167 verifyAndPrint("After graph building"); |
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168 |
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169 if (C1XOptions.PrintCompilation) { |
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170 TTY.print(String.format("%3d blocks | ", this.numberOfBlocks())); |
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171 } |
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172 } |
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173 |
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174 /** |
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175 * Gets the linear scan ordering of blocks as a list. |
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176 * @return the blocks in linear scan order |
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177 */ |
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178 public List<LIRBlock> linearScanOrder() { |
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179 return orderedBlocks; |
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180 } |
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181 |
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182 private void print(boolean cfgOnly) { |
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183 if (!TTY.isSuppressed()) { |
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184 TTY.println("IR for " + compilation.method); |
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185 final InstructionPrinter ip = new InstructionPrinter(TTY.out()); |
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186 final BlockPrinter bp = new BlockPrinter(this, ip, cfgOnly); |
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187 //getHIRStartBlock().iteratePreOrder(bp); |
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188 } |
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189 } |
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190 |
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191 /** |
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192 * Verifies the IR and prints it out if the relevant options are set. |
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193 * @param phase the name of the phase for printing |
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194 */ |
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195 public void verifyAndPrint(String phase) { |
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196 if (C1XOptions.PrintHIR && !TTY.isSuppressed()) { |
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197 TTY.println(phase); |
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198 print(false); |
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199 } |
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200 |
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201 if (compilation.compiler.isObserved()) { |
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202 compilation.compiler.fireCompilationEvent(new CompilationEvent(compilation, phase, compilation.graph, true, false)); |
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203 } |
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204 } |
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205 |
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206 |
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207 public int nextBlockNumber() { |
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208 return compilation.stats.blockCount++; |
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209 } |
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210 |
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211 public int numberOfBlocks() { |
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212 return compilation.stats.blockCount; |
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213 } |
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214 |
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215 public int numLoops() { |
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216 return compilation.stats.loopCount; |
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217 } |
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218 |
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219 /** |
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220 * Updates the maximum number of locks held at any one time. |
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221 * |
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222 * @param locks a lock count that will replace the current {@linkplain #maxLocks() max locks} if it is greater |
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223 */ |
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224 public void updateMaxLocks(int locks) { |
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225 if (locks > maxLocks) { |
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226 maxLocks = locks; |
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227 } |
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228 } |
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229 |
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230 /** |
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231 * Gets the number of locks. |
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232 * @return the number of locks |
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233 */ |
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234 public final int maxLocks() { |
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235 return maxLocks; |
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236 } |
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237 |
2781
bda5972a40a5
remove unnecessary BlockBegin nodes in frontend
Lukas Stadler <lukas.stadler@jku.at>
parents:
2776
diff
changeset
|
238 public Instruction getHIRStartBlock() { |
bda5972a40a5
remove unnecessary BlockBegin nodes in frontend
Lukas Stadler <lukas.stadler@jku.at>
parents:
2776
diff
changeset
|
239 return (Instruction) compilation.graph.start().successors().get(0); |
2718
c1ce2a53d6c3
Attempt to remove dependency between backend and BlockBegin.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
2716
diff
changeset
|
240 } |
2507
9ec15d6914ca
Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
changeset
|
241 } |