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annotate graal/com.oracle.max.graal.compiler/src/com/oracle/max/graal/compiler/graph/IR.java @ 2887:0e10a9bce78e

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Clean up added deleted node count.
author Thomas Wuerthinger <thomas@wuerthinger.net>
date Wed, 08 Jun 2011 13:19:56 +0200
parents c3b8968233fa
children 224412c24426
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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 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 /**
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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<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 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 new GraphBuilderPhase(compilation, compilation.method, false).apply(compilation.graph);
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76 new DuplicationPhase().apply(compilation.graph);
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77 new DeadCodeEliminationPhase().apply(compilation.graph);
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78
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79 if (C1XOptions.Inline) {
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80 new InliningPhase(compilation, this).apply(compilation.graph);
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81 }
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82
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83 if (C1XOptions.PrintTimers) {
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84 C1XTimers.HIR_CREATE.stop();
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85 C1XTimers.HIR_OPTIMIZE.start();
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86 }
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87
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88 Graph graph = compilation.graph;
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89
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90 if (C1XOptions.OptCanonicalizer) {
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91 new CanonicalizerPhase().apply(graph);
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92 }
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93
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94 new SplitCriticalEdgesPhase().apply(graph);
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95
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96 Schedule schedule = new Schedule(graph);
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97 List<Block> blocks = schedule.getBlocks();
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98 List<LIRBlock> lirBlocks = new ArrayList<LIRBlock>();
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99 Map<Block, LIRBlock> map = new HashMap<Block, LIRBlock>();
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100 for (Block b : blocks) {
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101 LIRBlock block = new LIRBlock(b.blockID());
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102 map.put(b, block);
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103 block.setInstructions(b.getInstructions());
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104 block.setLinearScanNumber(b.blockID());
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105
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106 block.setFirstInstruction(b.firstNode());
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107 block.setLastInstruction(b.lastNode());
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108 lirBlocks.add(block);
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109 }
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110
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111 for (Block b : blocks) {
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112 for (Block succ : b.getSuccessors()) {
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113 map.get(b).blockSuccessors().add(map.get(succ));
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114 }
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115
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116 for (Block pred : b.getPredecessors()) {
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117 map.get(b).blockPredecessors().add(map.get(pred));
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118 }
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119 }
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120
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121 orderedBlocks = lirBlocks;
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122 valueToBlock = new HashMap<Node, LIRBlock>();
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123 for (LIRBlock b : orderedBlocks) {
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124 for (Node i : b.getInstructions()) {
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125 valueToBlock.put(i, b);
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126 }
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127 }
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128 startBlock = lirBlocks.get(0);
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129 assert startBlock != null;
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130 assert startBlock.blockPredecessors().size() == 0;
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131
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132 ComputeLinearScanOrder clso = new ComputeLinearScanOrder(lirBlocks.size(), startBlock);
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133 orderedBlocks = clso.linearScanOrder();
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134 this.compilation.stats.loopCount = clso.numLoops();
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135
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136 int z = 0;
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137 for (LIRBlock b : orderedBlocks) {
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138 b.setLinearScanNumber(z++);
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139 }
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140
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141 verifyAndPrint("After linear scan order");
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142
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143 if (C1XOptions.PrintTimers) {
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144 C1XTimers.HIR_OPTIMIZE.stop();
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145 }
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146 }
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147
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148 /**
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149 * Gets the linear scan ordering of blocks as a list.
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150 * @return the blocks in linear scan order
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151 */
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152 public List<LIRBlock> linearScanOrder() {
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153 return orderedBlocks;
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154 }
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155
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156 /**
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157 * Verifies the IR and prints it out if the relevant options are set.
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158 * @param phase the name of the phase for printing
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159 */
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160 public void verifyAndPrint(String phase) {
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161 if (compilation.compiler.isObserved()) {
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162 compilation.compiler.fireCompilationEvent(new CompilationEvent(compilation, phase, compilation.graph, true, false));
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163 }
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164 }
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165
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166 public void printGraph(String phase, Graph graph) {
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167 if (compilation.compiler.isObserved()) {
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168 compilation.compiler.fireCompilationEvent(new CompilationEvent(compilation, phase, graph, true, false));
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169 }
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170 }
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171
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172 public int numLoops() {
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173 return compilation.stats.loopCount;
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174 }
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175
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176 /**
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177 * Gets the maximum number of locks in the graph's frame states.
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178 */
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179 public final int maxLocks() {
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180 int maxLocks = 0;
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181 for (Node node : compilation.graph.getNodes()) {
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182 if (node instanceof FrameState) {
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183 int lockCount = ((FrameState) node).locksSize();
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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 }