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annotate graal/com.oracle.max.graal.compiler/src/com/oracle/max/graal/compiler/graph/IR.java @ 2984:f49685081630

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Merge
author Gilles Duboscq <gilles.duboscq@oracle.com>
date Wed, 15 Jun 2011 19:54:42 +0200
parents cbece91420af 42681ed31c4d
children c6b89544fef5 183389909fe3
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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
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73 //printGraph("After GraphBuilding", compilation.graph);
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74
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75 if (GraalOptions.TestGraphDuplication) {
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76 new DuplicationPhase().apply(compilation.graph);
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77 //printGraph("After Duplication", compilation.graph);
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78 }
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79
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80 new DeadCodeEliminationPhase().apply(compilation.graph);
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81 //printGraph("After DeadCodeElimination", compilation.graph);
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82
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83 if (GraalOptions.Inline) {
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84 new InliningPhase(compilation, this, GraalOptions.TraceInlining).apply(compilation.graph);
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85 //printGraph("After Ininling", compilation.graph);
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86 }
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87
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88 if (GraalOptions.Time) {
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89 GraalTimers.COMPUTE_LINEAR_SCAN_ORDER.start();
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90 }
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91
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92 Graph graph = compilation.graph;
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93
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94 if (GraalOptions.OptCanonicalizer) {
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95 new CanonicalizerPhase().apply(graph);
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96 new DeadCodeEliminationPhase().apply(compilation.graph);
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97 printGraph("After Canonicalization", graph);
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98 }
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99
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100 new LoopPhase().apply(graph);
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101
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102 new LoweringPhase().apply(graph);
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103
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104 IdentifyBlocksPhase schedule = new IdentifyBlocksPhase(true);
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105 schedule.apply(graph);
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106
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107
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108 List<Block> blocks = schedule.getBlocks();
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109 List<LIRBlock> lirBlocks = new ArrayList<LIRBlock>();
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110 Map<Block, LIRBlock> map = new HashMap<Block, LIRBlock>();
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111 for (Block b : blocks) {
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112 LIRBlock block = new LIRBlock(b.blockID());
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113 map.put(b, block);
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114 block.setInstructions(b.getInstructions());
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115 block.setLinearScanNumber(b.blockID());
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116
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117 block.setFirstInstruction(b.firstNode());
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118 block.setLastInstruction(b.lastNode());
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119 lirBlocks.add(block);
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120 }
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121
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122 for (Block b : blocks) {
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123 for (Block succ : b.getSuccessors()) {
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124 map.get(b).blockSuccessors().add(map.get(succ));
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125 }
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126
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127 for (Block pred : b.getPredecessors()) {
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128 map.get(b).blockPredecessors().add(map.get(pred));
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129 }
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130 }
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131
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132 orderedBlocks = lirBlocks;
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133 valueToBlock = new HashMap<Node, LIRBlock>();
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134 for (LIRBlock b : orderedBlocks) {
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135 for (Node i : b.getInstructions()) {
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136 valueToBlock.put(i, b);
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137 }
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138 }
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139 startBlock = valueToBlock.get(graph.start());
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140 assert startBlock != null;
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141 assert startBlock.blockPredecessors().size() == 0;
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142
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143 ComputeLinearScanOrder clso = new ComputeLinearScanOrder(lirBlocks.size(), startBlock);
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144 orderedBlocks = clso.linearScanOrder();
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145 this.compilation.stats.loopCount = clso.numLoops();
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146
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147 int z = 0;
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148 for (LIRBlock b : orderedBlocks) {
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149 b.setLinearScanNumber(z++);
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150 }
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151
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152 printGraph("After linear scan order", compilation.graph);
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153
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154 if (GraalOptions.Time) {
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155 GraalTimers.COMPUTE_LINEAR_SCAN_ORDER.stop();
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156 }
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157 }
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158
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159 /**
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160 * Gets the linear scan ordering of blocks as a list.
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161 * @return the blocks in linear scan order
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162 */
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163 public List<LIRBlock> linearScanOrder() {
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164 return orderedBlocks;
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165 }
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166
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167 public void printGraph(String phase, Graph graph) {
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168 if (compilation.compiler.isObserved()) {
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169 compilation.compiler.fireCompilationEvent(new CompilationEvent(compilation, phase, graph, true, false));
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170 }
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171 }
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172
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173 public int numLoops() {
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174 return compilation.stats.loopCount;
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175 }
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176
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177 /**
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178 * Gets the maximum number of locks in the graph's frame states.
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179 */
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180 public final int maxLocks() {
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181 int maxLocks = 0;
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182 for (Node node : compilation.graph.getNodes()) {
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183 if (node instanceof FrameState) {
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184 FrameState current = (FrameState) node;
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185 int lockCount = 0;
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186 while (current != null) {
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187 lockCount += current.locksSize();
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188 current = current.outerFrameState();
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189 }
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190 if (lockCount > maxLocks) {
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191 maxLocks = lockCount;
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192 }
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193 }
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194 }
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195 return maxLocks;
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196 }
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197
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198 public Instruction getHIRStartBlock() {
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199 return (Instruction) compilation.graph.start().successors().get(0);
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200 }
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201 }