Mercurial > hg > graal-jvmci-8
annotate graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/cfg/Block.java @ 19721:b503dd4e723c
Perform full schedule for conditional elimination only in a phase where floating guards are available.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Mon, 09 Mar 2015 12:03:48 +0100 |
parents | d9e44edfca9b |
children | 6b73ce815fc2 |
rev | line source |
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1 /* |
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2 * Copyright (c) 2009, 2012, 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.graal.nodes.cfg; |
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24 |
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25 import java.util.*; |
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26 |
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27 import com.oracle.graal.compiler.common.cfg.*; |
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28 import com.oracle.graal.graph.*; |
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29 import com.oracle.graal.nodes.*; |
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30 |
14797 | 31 public final class Block extends AbstractBlockBase<Block> { |
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32 |
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33 protected final AbstractBeginNode beginNode; |
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34 |
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35 protected FixedNode endNode; |
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36 |
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37 protected double probability; |
15107 | 38 protected Loop<Block> loop; |
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39 |
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40 protected Block postdominator; |
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41 protected Block distancedDominatorCache; |
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42 |
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43 protected Block(AbstractBeginNode node) { |
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44 this.beginNode = node; |
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45 } |
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46 |
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47 public AbstractBeginNode getBeginNode() { |
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48 return beginNode; |
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49 } |
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50 |
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51 public FixedNode getEndNode() { |
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52 return endNode; |
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53 } |
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54 |
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55 @Override |
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57 return loop; |
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58 } |
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59 |
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60 public void setLoop(Loop<Block> loop) { |
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61 this.loop = loop; |
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62 } |
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63 |
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64 @Override |
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65 public int getLoopDepth() { |
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66 return loop == null ? 0 : loop.getDepth(); |
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67 } |
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68 |
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69 @Override |
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70 public boolean isLoopHeader() { |
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71 return getBeginNode() instanceof LoopBeginNode; |
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72 } |
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73 |
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74 @Override |
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75 public boolean isLoopEnd() { |
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76 return getEndNode() instanceof LoopEndNode; |
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77 } |
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78 |
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79 @Override |
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80 public boolean isExceptionEntry() { |
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81 Node predecessor = getBeginNode().predecessor(); |
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82 return predecessor != null && predecessor instanceof InvokeWithExceptionNode && getBeginNode() == ((InvokeWithExceptionNode) predecessor).exceptionEdge(); |
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83 } |
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84 |
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85 public Block getFirstPredecessor() { |
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86 return getPredecessors().get(0); |
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87 } |
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88 |
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89 public Block getFirstSuccessor() { |
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90 return getSuccessors().get(0); |
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91 } |
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92 |
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93 public Block getEarliestPostDominated() { |
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94 Block b = this; |
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95 while (true) { |
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96 Block dom = b.getDominator(); |
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97 if (dom != null && dom.getPostdominator() == b) { |
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98 b = dom; |
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99 } else { |
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100 break; |
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101 } |
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102 } |
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103 return b; |
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104 } |
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105 |
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106 @Override |
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107 public Block getPostdominator() { |
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108 return postdominator; |
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109 } |
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110 |
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111 private class NodeIterator implements Iterator<FixedNode> { |
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112 |
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113 private FixedNode cur; |
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114 |
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115 public NodeIterator() { |
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116 cur = getBeginNode(); |
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117 } |
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118 |
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119 @Override |
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120 public boolean hasNext() { |
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121 return cur != null; |
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122 } |
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123 |
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124 @Override |
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125 public FixedNode next() { |
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126 FixedNode result = cur; |
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127 if (result instanceof FixedWithNextNode) { |
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128 FixedWithNextNode fixedWithNextNode = (FixedWithNextNode) result; |
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129 FixedNode next = fixedWithNextNode.next(); |
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130 if (next instanceof AbstractBeginNode) { |
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131 next = null; |
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132 } |
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133 cur = next; |
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134 } else { |
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135 cur = null; |
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136 } |
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137 assert !(cur instanceof AbstractBeginNode); |
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138 return result; |
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139 } |
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140 |
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141 @Override |
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142 public void remove() { |
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143 throw new UnsupportedOperationException(); |
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144 } |
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145 } |
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146 |
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147 public Iterable<FixedNode> getNodes() { |
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148 return new Iterable<FixedNode>() { |
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149 |
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150 @Override |
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151 public Iterator<FixedNode> iterator() { |
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152 return new NodeIterator(); |
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153 } |
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154 |
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155 @Override |
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156 public String toString() { |
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157 StringBuilder str = new StringBuilder().append('['); |
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158 for (FixedNode node : this) { |
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159 str.append(node).append(", "); |
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160 } |
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161 if (str.length() > 1) { |
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162 str.setLength(str.length() - 2); |
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163 } |
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164 return str.append(']').toString(); |
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165 } |
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166 }; |
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167 } |
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168 |
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169 @Override |
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170 public String toString() { |
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171 return "B" + id; |
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172 } |
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173 |
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174 @Override |
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175 public double probability() { |
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176 return probability; |
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177 } |
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178 |
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179 public void setProbability(double probability) { |
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180 assert probability >= 0 && Double.isFinite(probability); |
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181 this.probability = probability; |
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182 } |
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183 |
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184 @Override |
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185 public Block getDominator(int distance) { |
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186 Block result = this; |
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187 for (int i = 0; i < distance; ++i) { |
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188 result = result.getDominator(); |
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189 } |
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190 return result; |
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191 } |
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192 } |