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annotate graal/com.oracle.max.graal.compiler/src/com/oracle/max/graal/compiler/graph/IR.java @ 2948:c76db61fbb73

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Merge.
author Thomas Wuerthinger <thomas@wuerthinger.net>
date Fri, 10 Jun 2011 21:52:19 +0200
parents 41318fcb6b56 c7783b6773ea
children 445233cd91df 49a8b14e9d24 42681ed31c4d
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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.oracle.max.graal.compiler.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.compiler.*;
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28 import com.oracle.max.graal.compiler.ir.*;
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29 import com.oracle.max.graal.compiler.lir.*;
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30 import com.oracle.max.graal.compiler.observer.*;
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31 import com.oracle.max.graal.compiler.phases.*;
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32 import com.oracle.max.graal.compiler.schedule.*;
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33 import com.oracle.max.graal.compiler.value.*;
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34 import com.oracle.max.graal.graph.*;
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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 GraalCompilation 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 /**
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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(GraalCompilation 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<Node, 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 new GraphBuilderPhase(compilation, compilation.method, false, false).apply(compilation.graph);
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72 printGraph("After GraphBuilding", compilation.graph);
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73 //new DuplicationPhase().apply(compilation.graph);
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74 new DeadCodeEliminationPhase().apply(compilation.graph);
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75 printGraph("After DeadCodeElimination", compilation.graph);
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76
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77 if (GraalOptions.Inline) {
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78 new InliningPhase(compilation, this, GraalOptions.TraceInlining).apply(compilation.graph);
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79 printGraph("After Ininling", compilation.graph);
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80 }
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81
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82 if (GraalOptions.Time) {
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83 GraalTimers.COMPUTE_LINEAR_SCAN_ORDER.start();
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84 }
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85
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86 Graph graph = compilation.graph;
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87
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88 if (GraalOptions.OptCanonicalizer) {
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89 new CanonicalizerPhase().apply(graph);
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90 new DeadCodeEliminationPhase().apply(compilation.graph);
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91 printGraph("After Canonicalization", graph);
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92 }
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93
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94 new LoweringPhase().apply(graph);
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95
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96 new SplitCriticalEdgesPhase().apply(graph);
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97
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98 IdentifyBlocksPhase schedule = new IdentifyBlocksPhase(true);
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99 schedule.apply(graph);
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100
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101
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102 List<Block> blocks = schedule.getBlocks();
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103 List<LIRBlock> lirBlocks = new ArrayList<LIRBlock>();
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104 Map<Block, LIRBlock> map = new HashMap<Block, LIRBlock>();
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105 for (Block b : blocks) {
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106 LIRBlock block = new LIRBlock(b.blockID());
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107 map.put(b, block);
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108 block.setInstructions(b.getInstructions());
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109 block.setLinearScanNumber(b.blockID());
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110
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111 block.setFirstInstruction(b.firstNode());
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112 block.setLastInstruction(b.lastNode());
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113 lirBlocks.add(block);
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114 }
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115
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116 for (Block b : blocks) {
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117 for (Block succ : b.getSuccessors()) {
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118 map.get(b).blockSuccessors().add(map.get(succ));
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119 }
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120
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121 for (Block pred : b.getPredecessors()) {
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122 map.get(b).blockPredecessors().add(map.get(pred));
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123 }
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124 }
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125
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126 orderedBlocks = lirBlocks;
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127 valueToBlock = new HashMap<Node, LIRBlock>();
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128 for (LIRBlock b : orderedBlocks) {
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129 for (Node i : b.getInstructions()) {
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130 valueToBlock.put(i, b);
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131 }
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132 }
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133 startBlock = lirBlocks.get(0);
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134 assert startBlock != null;
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135 assert startBlock.blockPredecessors().size() == 0;
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136
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137 ComputeLinearScanOrder clso = new ComputeLinearScanOrder(lirBlocks.size(), startBlock);
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138 orderedBlocks = clso.linearScanOrder();
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139 this.compilation.stats.loopCount = clso.numLoops();
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140
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141 int z = 0;
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142 for (LIRBlock b : orderedBlocks) {
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143 b.setLinearScanNumber(z++);
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144 }
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145
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146 printGraph("After linear scan order", compilation.graph);
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147
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148 if (GraalOptions.Time) {
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149 GraalTimers.COMPUTE_LINEAR_SCAN_ORDER.stop();
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150 }
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151 }
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152
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153 /**
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154 * Gets the linear scan ordering of blocks as a list.
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155 * @return the blocks in linear scan order
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156 */
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157 public List<LIRBlock> linearScanOrder() {
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158 return orderedBlocks;
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159 }
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160
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161 public void printGraph(String phase, Graph graph) {
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162 if (compilation.compiler.isObserved()) {
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163 compilation.compiler.fireCompilationEvent(new CompilationEvent(compilation, phase, graph, true, false));
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164 }
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165 }
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166
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167 public int numLoops() {
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168 return compilation.stats.loopCount;
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169 }
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170
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171 /**
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172 * Gets the maximum number of locks in the graph's frame states.
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173 */
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174 public final int maxLocks() {
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175 int maxLocks = 0;
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176 for (Node node : compilation.graph.getNodes()) {
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177 if (node instanceof FrameState) {
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178 FrameState current = (FrameState) node;
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179 int lockCount = 0;
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180 while (current != null) {
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181 lockCount += current.locksSize();
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182 current = current.outerFrameState();
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183 }
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184 if (lockCount > maxLocks) {
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185 maxLocks = lockCount;
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186 }
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187 }
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188 }
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189 return maxLocks;
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190 }
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191
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192 public Instruction getHIRStartBlock() {
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193 return (Instruction) compilation.graph.start().successors().get(0);
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194 }
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195 }