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annotate graal/com.oracle.max.graal.compiler/src/com/oracle/max/graal/compiler/schedule/Block.java @ 2874:d90bf514d647

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Renamed packages.
author Thomas Wuerthinger <thomas@wuerthinger.net>
date Wed, 08 Jun 2011 08:59:54 +0200
parents graal/com.oracle.max.graal.compiler/src/com/oracle/max/graal/schedule/Block.java@0341b6424579
children 41318fcb6b56
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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.compiler.schedule;
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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.ir.*;
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28 import com.oracle.max.graal.graph.*;
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29
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30
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31 public class Block {
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32
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33 private int blockID;
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34 private final List<Block> successors = new ArrayList<Block>();
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35 private final List<Block> predecessors = new ArrayList<Block>();
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36 private List<Node> instructions = new ArrayList<Node>();
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37 private Block dominator;
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38 private final List<Block> dominators = new ArrayList<Block>();
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39
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40 private Node firstNode;
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41 private Node lastNode;
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42
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43 public Node firstNode() {
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44 return firstNode;
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45 }
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46
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47 public void setFirstNode(Node node) {
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48 this.firstNode = node;
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49 }
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50
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51 public Node lastNode() {
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52 return lastNode;
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53 }
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54
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55 public void setLastNode(Node node) {
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56 this.lastNode = node;
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57 }
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58
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59 public List<Block> getSuccessors() {
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60 return Collections.unmodifiableList(successors);
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61 }
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62
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63 public void setDominator(Block dominator) {
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64 assert this.dominator == null;
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65 assert dominator != null;
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66 this.dominator = dominator;
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67 dominator.dominators.add(this);
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68 }
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69
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70 public List<Block> getDominators() {
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71 return Collections.unmodifiableList(dominators);
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72 }
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73
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74 public List<Node> getInstructions() {
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75 return instructions;
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76 }
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77
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78 public List<Block> getPredecessors() {
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79 return Collections.unmodifiableList(predecessors);
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80 }
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81
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82 public Block(int blockID) {
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83 this.blockID = blockID;
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84 }
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85
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86 public void addSuccessor(Block other) {
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87 successors.add(other);
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88 other.predecessors.add(this);
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89 }
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90
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91 public int blockID() {
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92 return blockID;
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93 }
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94
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95 /**
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96 * Iterate over this block, its exception handlers, and its successors, in that order.
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97 *
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98 * @param closure the closure to apply to each block
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99 */
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100 public void iteratePreOrder(BlockClosure closure) {
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101 // XXX: identity hash map might be too slow, consider a boolean array or a mark field
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102 iterate(new IdentityHashMap<Block, Block>(), closure);
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103 }
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104
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105 private void iterate(IdentityHashMap<Block, Block> mark, BlockClosure closure) {
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106 if (!mark.containsKey(this)) {
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107 mark.put(this, this);
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108 closure.apply(this);
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109
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110 iterateReverse(mark, closure, this.successors);
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111 }
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112 }
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113
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114 private void iterateReverse(IdentityHashMap<Block, Block> mark, BlockClosure closure, List<Block> list) {
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115 for (int i = list.size() - 1; i >= 0; i--) {
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116 list.get(i).iterate(mark, closure);
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117 }
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118 }
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119
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120 @Override
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121 public String toString() {
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122 return "B" + blockID;
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123 }
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124
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125 public Block dominator() {
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126 return dominator;
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127 }
e3a0630a1dab added code for computing dominators.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents: 2793
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128
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2af109bec0c0 Make block contains a list of nodes instead a list of instructions.
Thomas Wuerthinger <thomas@wuerthinger.net>
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129 public void setInstructions(List<Node> instructions) {
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e3a0630a1dab added code for computing dominators.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents: 2793
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130 this.instructions = instructions;
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Thomas Wuerthinger <thomas@wuerthinger.net>
parents: 2793
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131 }
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45a58c9536de Added BFS node iteration. Started drafting scheduling.
Thomas Wuerthinger <thomas@wuerthinger.net>
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132 }