Mercurial > hg > truffle
annotate graal/com.oracle.max.graal.graph/src/com/oracle/max/graal/graph/Graph.java @ 4614:a3882fd1ae61
Make it possible to have multiple LoopEnds per LoopBegin
Factor out the 2 versions of KillCFG (GraphUitl/Canonicalizer)
Remove unused loop detection code from FloatingReadPhase
Made InvokeNode's toString/getDebugProperties more robust
author | Gilles Duboscq <duboscq@ssw.jku.at> |
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date | Thu, 16 Feb 2012 11:57:38 +0100 |
parents | cd2b68ef8e23 |
children | 75dcf829cfdc |
rev | line source |
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1 /* |
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2 * Copyright (c) 2011, 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.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.graph.GraphEvent.NodeEvent; |
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28 import com.oracle.max.graal.graph.Node.IterableNodeType; |
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29 import com.oracle.max.graal.graph.Node.ValueNumberable; |
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30 import com.oracle.max.graal.graph.iterators.*; |
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31 |
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32 /** |
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33 * This class is a graph container, it contains the set of nodes that belong to this graph. |
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34 */ |
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35 public class Graph { |
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36 |
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37 protected final String name; |
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38 |
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39 private static final boolean TIME_TRAVEL = false; |
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40 |
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41 private final ArrayList<Node> nodes; |
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42 |
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43 // these two arrays contain one entry for each NodeClass, indexed by NodeClass.iterableId. |
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44 // they contain the first and last pointer to a linked list of all nodes with this type. |
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45 private final ArrayList<Node> nodeCacheFirst; |
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46 private final ArrayList<Node> nodeCacheLast; |
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47 private int deletedNodeCount; |
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48 private int mark; |
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49 private GraphEventLog eventLog; |
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50 |
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51 ArrayList<Node> usagesDropped = new ArrayList<>(); |
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52 NodeWorkList inputChanged; |
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53 private final HashMap<CacheEntry, Node> cachedNodes = new HashMap<>(); |
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54 |
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55 private static final class CacheEntry { |
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56 |
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57 private final Node node; |
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58 |
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59 public CacheEntry(Node node) { |
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60 this.node = node; |
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61 } |
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62 |
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63 @Override |
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64 public int hashCode() { |
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65 return node.getNodeClass().valueNumber(node); |
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66 } |
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67 |
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68 @Override |
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69 public boolean equals(Object obj) { |
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70 if (obj == this) { |
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71 return true; |
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72 } |
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73 if (obj instanceof CacheEntry) { |
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74 CacheEntry other = (CacheEntry) obj; |
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75 NodeClass nodeClass = node.getNodeClass(); |
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76 if (other.node.getNodeClass() == nodeClass) { |
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77 return nodeClass.valueNumberable() && nodeClass.valueEqual(node, other.node) && nodeClass.edgesEqual(node, other.node); |
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78 } |
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79 } |
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80 return false; |
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81 } |
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82 } |
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83 |
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84 /** |
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85 * Creates an empty Graph with no name. |
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86 */ |
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87 public Graph() { |
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88 this(null); |
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89 } |
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90 |
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91 /** |
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92 * Creates an empty Graph with a given name. |
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93 * |
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94 * @param name the name of the graph, used for debugging purposes |
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95 */ |
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96 public Graph(String name) { |
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97 nodes = new ArrayList<>(32); |
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98 nodeCacheFirst = new ArrayList<>(NodeClass.cacheSize()); |
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99 nodeCacheLast = new ArrayList<>(NodeClass.cacheSize()); |
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100 this.name = name; |
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101 } |
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102 |
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103 /** |
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104 * Creates a copy of this graph. |
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105 */ |
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106 public Graph copy() { |
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107 return copy(name); |
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108 } |
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109 |
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110 /** |
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111 * Creates a copy of this graph. |
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112 * |
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113 * @param name the name of the copy, used for debugging purposes (can be null) |
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114 */ |
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115 public Graph copy(String newName) { |
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116 Graph copy = new Graph(newName); |
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117 Map<Node, Node> emptyMap = Collections.emptyMap(); |
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118 copy.addDuplicates(getNodes(), emptyMap); |
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119 return copy; |
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120 } |
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121 |
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122 @Override |
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123 public String toString() { |
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124 return name == null ? super.toString() : "Graph " + name; |
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125 } |
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126 |
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127 /** |
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128 * Gets the number of live nodes in this graph. That is the number of nodes which have been added to the graph minus the number of deleted nodes. |
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129 * @return the number of live nodes in this graph |
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130 */ |
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131 public int getNodeCount() { |
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132 return nodes.size() - getDeletedNodeCount(); |
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133 } |
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134 |
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135 /** |
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136 * Gets the number of node which have been deleted from this graph. |
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137 * @return the number of node which have been deleted from this graph |
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138 */ |
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139 public int getDeletedNodeCount() { |
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140 return deletedNodeCount; |
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141 } |
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142 |
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143 /** |
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144 * Adds a new node to the graph. |
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145 * @param node the node to be added |
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146 * @return the node which was added to the graph |
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147 */ |
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148 public <T extends Node> T add(T node) { |
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149 node.initialize(this); |
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150 return node; |
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151 } |
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152 |
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153 public int getUsagesDroppedNodesCount() { |
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154 return usagesDropped.size(); |
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155 } |
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156 |
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157 public List<Node> getAndCleanUsagesDroppedNodes() { |
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158 ArrayList<Node> result = usagesDropped; |
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159 usagesDropped = new ArrayList<>(); |
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160 return result; |
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161 } |
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162 |
4614
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163 public void trackInputChange(NodeWorkList worklist) { |
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164 this.inputChanged = worklist; |
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165 } |
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166 |
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167 public void stopTrackingInputChange() { |
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168 inputChanged = null; |
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169 } |
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170 |
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171 /** |
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172 * Adds a new node to the graph, if a <i>similar</i> node already exists in the graph, the provided node will not be added to the graph but the <i>similar</i> node will be returned instead. |
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173 * @param node |
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174 * @return the node which was added to the graph or a <i>similar</i> which was already in the graph. |
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175 */ |
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176 @SuppressWarnings("unchecked") |
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177 public <T extends Node & ValueNumberable> T unique(T node) { |
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178 assert checkValueNumberable(node); |
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179 if (!node.getNodeClass().hasOutgoingEdges()) { |
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180 Node cachedNode = cachedNodes.get(new CacheEntry(node)); |
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181 if (cachedNode != null && cachedNode.isAlive()) { |
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182 return (T) cachedNode; |
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183 } else { |
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184 Node result = add(node); |
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185 cachedNodes.put(new CacheEntry(node), result); |
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186 return (T) result; |
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187 } |
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188 } else { |
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189 Node duplicate = findDuplicate(node); |
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190 if (duplicate != null) { |
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191 return (T) duplicate; |
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192 } |
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193 return add(node); |
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194 } |
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195 } |
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196 |
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197 public Node findDuplicate(Node node) { |
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198 if (node.getNodeClass().valueNumberable()) { |
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199 for (Node input : node.inputs()) { |
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200 if (input != null) { |
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201 for (Node usage : input.usages()) { |
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202 if (usage != node && node.getNodeClass().valueEqual(node, usage) && node.getNodeClass().edgesEqual(node, usage)) { |
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203 return usage; |
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204 } |
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205 } |
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206 break; |
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207 } |
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208 } |
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209 } |
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210 return null; |
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211 } |
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212 |
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213 private static boolean checkValueNumberable(Node node) { |
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214 if (!node.getNodeClass().valueNumberable()) { |
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215 throw new VerificationError("node is not valueNumberable").addContext(node); |
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216 } |
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217 return true; |
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218 } |
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219 |
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220 public void mark() { |
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221 this.mark = nodeIdCount(); |
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222 } |
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223 |
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224 private class NodeIterator implements Iterator<Node> { |
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225 private int index; |
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226 |
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227 public NodeIterator() { |
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228 this(0); |
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229 } |
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230 |
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231 public NodeIterator(int index) { |
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232 this.index = index - 1; |
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|
233 forward(); |
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234 } |
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235 |
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236 private void forward() { |
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237 if (index < nodes.size()) { |
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238 do { |
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239 index++; |
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|
240 } while (index < nodes.size() && nodes.get(index) == null); |
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|
241 } |
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|
242 } |
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243 |
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|
244 @Override |
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|
245 public boolean hasNext() { |
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|
246 checkForDeletedNode(); |
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|
247 return index < nodes.size(); |
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248 } |
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249 |
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|
250 private void checkForDeletedNode() { |
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251 if (index < nodes.size()) { |
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252 while (index < nodes.size() && nodes.get(index) == null) { |
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253 index++; |
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254 } |
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255 } |
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256 } |
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257 |
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258 @Override |
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259 public Node next() { |
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260 try { |
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261 return nodes.get(index); |
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262 } finally { |
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263 forward(); |
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264 } |
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265 } |
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266 |
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267 @Override |
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268 public void remove() { |
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269 throw new UnsupportedOperationException(); |
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270 } |
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271 } |
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272 |
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273 /** |
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274 * Returns an {@link Iterable} providing all nodes added since the last {@link Graph#mark() mark}. |
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275 * @return an {@link Iterable} providing the new nodes |
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276 */ |
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277 public NodeIterable<Node> getNewNodes() { |
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278 final int index = this.mark; |
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279 return new NodeIterable<Node>() { |
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280 @Override |
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281 public Iterator<Node> iterator() { |
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282 return new NodeIterator(index); |
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283 } |
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284 }; |
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285 } |
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286 |
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287 /** |
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288 * Returns an {@link Iterable} providing all the live nodes. |
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289 * @return an {@link Iterable} providing all the live nodes. |
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290 */ |
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291 public NodeIterable<Node> getNodes() { |
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292 return new NodeIterable<Node>() { |
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293 @Override |
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294 public Iterator<Node> iterator() { |
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295 return new NodeIterator(); |
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296 } |
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297 }; |
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298 } |
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299 |
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300 private static class TypedNodeIterator<T extends IterableNodeType> implements Iterator<T> { |
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301 private Node current; |
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302 private final Node start; |
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303 |
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304 public TypedNodeIterator(Node start) { |
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305 if (start != null && start.isDeleted()) { |
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306 this.current = start; |
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307 } else { |
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308 this.current = null; |
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309 } |
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310 this.start = start; |
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311 } |
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312 |
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313 @Override |
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314 public boolean hasNext() { |
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315 if (current != null) { |
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316 Node next = current.typeCacheNext; |
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317 if (next != null) { |
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318 while (next.isDeleted()) { |
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319 next = next.typeCacheNext; |
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320 if (next == null) { |
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321 return false; |
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322 } |
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323 current.typeCacheNext = next; |
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324 } |
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325 return true; |
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|
326 } |
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327 return false; |
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328 } else { |
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329 return start != null; |
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330 } |
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|
331 } |
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|
332 |
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|
333 @Override |
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334 @SuppressWarnings("unchecked") |
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335 public T next() { |
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336 if (current == null) { |
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|
337 Node result = start; |
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338 current = result; |
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339 return (T) result; |
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340 } else { |
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|
341 Node result = current.typeCacheNext; |
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342 current = result; |
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343 return (T) result; |
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344 } |
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345 } |
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346 |
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|
347 @Override |
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348 public void remove() { |
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349 throw new UnsupportedOperationException(); |
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|
350 } |
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|
351 } |
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352 |
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|
353 /** |
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|
354 * Returns an {@link Iterable} providing all the live nodes whose type is compatible with {@code type}. |
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355 * @param type the type of node to return |
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356 * @return an {@link Iterable} providing all the matching nodes. |
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357 */ |
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358 public <T extends Node & IterableNodeType> NodeIterable<T> getNodes(final Class<T> type) { |
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359 final Node start = getStartNode(type); |
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360 return new NodeIterable<T>() { |
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|
361 @Override |
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|
362 public Iterator<T> iterator() { |
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Adjust code base to new level of warnings.
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363 return new TypedNodeIterator<>(start); |
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364 } |
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|
365 }; |
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|
366 } |
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|
367 |
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|
368 /** |
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|
369 * Returns whether the graph contains at least one node of the given type. |
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370 * @param type the type of node that is checked for occurrence |
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371 * @return whether there is at least one such node |
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372 */ |
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|
373 public <T extends Node & IterableNodeType> boolean hasNode(final Class<T> type) { |
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374 return getNodes(type).iterator().hasNext(); |
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|
375 } |
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376 |
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|
377 private <T> Node getStartNode(final Class<T> type) { |
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378 int nodeClassId = NodeClass.get(type).iterableId(); |
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|
379 assert nodeClassId != -1 : type + " is not iterable within graphs (missing \"implements IterableNodeType\"?)"; |
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|
380 Node start = nodeCacheFirst.size() <= nodeClassId ? null : nodeCacheFirst.get(nodeClassId); |
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|
381 return start; |
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parents:
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|
382 } |
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parents:
diff
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|
383 |
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parents:
diff
changeset
|
384 public NodeBitMap createNodeBitMap() { |
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parents:
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|
385 return new NodeBitMap(this); |
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parents:
diff
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|
386 } |
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parents:
diff
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|
387 |
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parents:
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|
388 public <T> NodeMap<T> createNodeMap() { |
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389 return new NodeMap<>(this); |
3733
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|
390 } |
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parents:
diff
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391 |
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parents:
diff
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|
392 public NodeFlood createNodeFlood() { |
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393 return new NodeFlood(this); |
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parents:
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394 } |
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parents:
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|
395 |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
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|
396 public NodeWorkList createNodeWorkList() { |
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parents:
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397 return new NodeWorkList(this); |
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parents:
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|
398 } |
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parents:
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|
399 |
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400 public NodeWorkList createNodeWorkList(boolean fill, int iterationLimitPerNode) { |
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401 return new NodeWorkList(this, fill, iterationLimitPerNode); |
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parents:
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402 } |
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parents:
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|
403 |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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404 void register(Node node) { |
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parents:
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|
405 assert node.id() == Node.INITIAL_ID; |
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406 int id = nodes.size(); |
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parents:
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407 nodes.add(id, node); |
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|
408 |
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409 int nodeClassId = node.getNodeClass().iterableId(); |
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410 if (nodeClassId != NodeClass.NOT_ITERABLE) { |
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parents:
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411 while (nodeCacheFirst.size() <= nodeClassId) { |
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412 nodeCacheFirst.add(null); |
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413 nodeCacheLast.add(null); |
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414 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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changeset
|
415 Node prev = nodeCacheLast.get(nodeClassId); |
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416 if (prev != null) { |
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parents:
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changeset
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417 prev.typeCacheNext = node; |
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|
418 } else { |
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|
419 nodeCacheFirst.set(nodeClassId, node); |
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|
420 } |
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|
421 nodeCacheLast.set(nodeClassId, node); |
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|
422 } |
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|
423 |
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424 node.id = id; |
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parents:
diff
changeset
|
425 logNodeAdded(node); |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
426 } |
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parents:
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changeset
|
427 |
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|
428 void logNodeAdded(Node node) { |
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429 if (TIME_TRAVEL) { |
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430 log(new GraphEvent.NodeEvent(node, GraphEvent.NodeEvent.Type.ADDED)); |
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|
431 } |
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|
432 } |
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|
433 |
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|
434 void logNodeDeleted(Node node) { |
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|
435 if (TIME_TRAVEL) { |
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|
436 log(new GraphEvent.NodeEvent(node, GraphEvent.NodeEvent.Type.DELETED)); |
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|
437 } |
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parents:
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|
438 } |
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parents:
diff
changeset
|
439 |
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parents:
diff
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|
440 private void log(NodeEvent nodeEvent) { |
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|
441 if (eventLog == null) { |
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442 eventLog = new GraphEventLog(); |
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|
443 } |
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parents:
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|
444 eventLog.add(nodeEvent); |
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|
445 } |
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parents:
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changeset
|
446 |
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diff
changeset
|
447 public GraphEventLog getEventLog() { |
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448 return eventLog; |
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parents:
diff
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|
449 } |
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parents:
diff
changeset
|
450 |
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parents:
diff
changeset
|
451 void unregister(Node node) { |
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|
452 assert !node.isDeleted() : "cannot delete a node twice! node=" + node; |
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parents:
diff
changeset
|
453 logNodeDeleted(node); |
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parents:
diff
changeset
|
454 nodes.set(node.id(), null); |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
455 deletedNodeCount++; |
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parents:
diff
changeset
|
456 |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
457 // nodes aren't removed from the type cache here - they will be removed during iteration |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
458 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
459 |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
460 public boolean verify() { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
461 for (Node node : getNodes()) { |
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parents:
diff
changeset
|
462 try { |
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parents:
diff
changeset
|
463 try { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
464 assert node.verify(); |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
465 } catch (AssertionError t) { |
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parents:
diff
changeset
|
466 throw new GraalInternalError(t); |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
467 } catch (RuntimeException t) { |
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parents:
diff
changeset
|
468 throw new GraalInternalError(t); |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
469 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
470 } catch (GraalInternalError e) { |
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parents:
diff
changeset
|
471 throw e.addContext(node).addContext(this); |
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parents:
diff
changeset
|
472 } |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
473 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
474 return true; |
e233f5660da4
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
475 } |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
476 |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
477 Node getNode(int i) { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
478 return nodes.get(i); |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
479 } |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
480 |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
481 /** |
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parents:
diff
changeset
|
482 * Returns the number of node ids generated so far. |
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parents:
diff
changeset
|
483 * @return the number of node ids generated so far |
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parents:
diff
changeset
|
484 */ |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
485 int nodeIdCount() { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
486 return nodes.size(); |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
487 } |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
488 |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
489 /** |
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parents:
diff
changeset
|
490 * Adds duplicates of the nodes in {@code nodes} to this graph. |
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parents:
diff
changeset
|
491 * This will recreate any edges between the duplicate nodes. The {@code replacement} map can be used to |
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parents:
diff
changeset
|
492 * replace a node from the source graph by a given node (which must already be in this graph). |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
493 * Edges between duplicate and replacement nodes will also be recreated so care should be taken |
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parents:
diff
changeset
|
494 * regarding the matching of node types in the replacement map. |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
495 * |
4142
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Adjust code base to new level of warnings.
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3733
diff
changeset
|
496 * @param newNodes the nodes to be duplicated |
3733
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parents:
diff
changeset
|
497 * @param replacements the replacement map (can be null if no replacement is to be performed) |
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parents:
diff
changeset
|
498 * @return a map which associates the original nodes from {@code nodes} to their duplicates |
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parents:
diff
changeset
|
499 */ |
4142
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parents:
3733
diff
changeset
|
500 public Map<Node, Node> addDuplicates(Iterable<Node> newNodes, Map<Node, Node> replacements) { |
bc8527f3071c
Adjust code base to new level of warnings.
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parents:
3733
diff
changeset
|
501 return NodeClass.addGraphDuplicate(this, newNodes, replacements); |
3733
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
502 } |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
503 } |