Mercurial > hg > graal-compiler
annotate graal/GraalCompiler/src/com/sun/c1x/ir/BlockBegin.java @ 2723:173067211acb
Removed two more BlockBegin flags.
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Thu, 19 May 2011 16:44:05 +0200 |
parents | 23d0bcfa3c84 |
children | e2d20fc3760f |
rev | line source |
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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.sun.c1x.ir; |
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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.graph.*; |
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28 import com.oracle.max.asm.*; |
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29 import com.sun.c1x.*; |
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30 import com.sun.c1x.debug.*; |
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31 import com.sun.c1x.lir.*; |
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32 import com.sun.c1x.util.*; |
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33 import com.sun.c1x.value.*; |
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34 import com.sun.cri.ci.*; |
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35 import com.sun.cri.ri.*; |
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36 |
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37 /** |
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38 * Denotes the beginning of a basic block, and holds information |
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39 * about the basic block, including the successor and |
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40 * predecessor blocks, exception handlers, liveness information, etc. |
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41 */ |
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42 public final class BlockBegin extends StateSplit { |
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43 |
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44 private static final int INPUT_COUNT = 1; |
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45 private static final int INPUT_STATE_BEFORE = 0; |
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46 |
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47 private static final int SUCCESSOR_COUNT = 1; |
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48 private static final int SUCCESSOR_END = 0; |
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49 |
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50 @Override |
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51 protected int inputCount() { |
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52 return super.inputCount() + INPUT_COUNT; |
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53 } |
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54 |
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55 @Override |
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56 protected int successorCount() { |
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57 return super.successorCount() + SUCCESSOR_COUNT; |
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58 } |
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59 |
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60 /** |
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61 * The last node in the block (which contains the successors). |
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62 */ |
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63 public BlockEnd end() { |
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64 return (BlockEnd) successors().get(super.successorCount() + SUCCESSOR_END); |
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65 } |
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66 |
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67 @Override |
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68 public boolean needsStateAfter() { |
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69 return false; |
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70 } |
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71 |
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72 public void setEnd(BlockEnd end) { |
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73 assert end != null; |
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74 successors().set(super.successorCount() + SUCCESSOR_END, end); |
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75 } |
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76 |
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77 private static final List<BlockBegin> NO_HANDLERS = Collections.emptyList(); |
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78 |
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79 /** |
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80 * An enumeration of flags for block entries indicating various things. |
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81 */ |
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82 public enum BlockFlag { |
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83 ParserLoopHeader; |
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84 |
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85 public final int mask = 1 << ordinal(); |
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86 } |
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87 |
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88 /** |
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89 * A unique id used in tracing. |
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90 */ |
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91 public final int blockID; |
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92 |
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93 /** |
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94 * Denotes the current set of {@link BlockBegin.BlockFlag} settings. |
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95 */ |
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96 private int blockFlags; |
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97 |
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98 private int depthFirstNumber; |
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99 private int linearScanNumber; |
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100 |
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101 private BlockBegin dominator; |
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102 |
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103 // LIR block |
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104 private LIRBlock lirBlock; |
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105 |
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106 public void setLIRBlock(LIRBlock block) { |
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107 this.lirBlock = block; |
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108 } |
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109 |
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110 /** |
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111 * Index of bytecode that generated this node when appended in a basic block. |
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112 * Negative values indicate special cases. |
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113 */ |
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114 private int bci; |
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115 |
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116 /** |
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117 * Constructs a new BlockBegin at the specified bytecode index. |
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118 * @param bci the bytecode index of the start |
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119 * @param blockID the ID of the block |
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120 * @param graph |
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121 */ |
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122 public BlockBegin(int bci, int blockID, Graph graph) { |
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123 super(CiKind.Illegal, INPUT_COUNT, SUCCESSOR_COUNT, graph); |
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124 this.blockID = blockID; |
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125 depthFirstNumber = -1; |
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126 linearScanNumber = -1; |
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127 setBCI(bci); |
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128 } |
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129 |
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130 /** |
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131 * Gets the list of predecessors of this block. |
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132 * @return the predecessor list |
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133 */ |
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134 @SuppressWarnings({ "unchecked", "rawtypes" }) |
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135 public List<Instruction> blockPredecessors() { |
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136 if (predecessors().size() == 1 && predecessors().get(0) == graph().root()) { |
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137 return Collections.EMPTY_LIST; |
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138 } else { |
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139 return (List) Collections.unmodifiableList(predecessors()); |
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140 } |
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141 } |
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142 |
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143 /** |
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144 * Sets the dominator block for this block. |
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145 * @param dominator the dominator for this block |
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146 */ |
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147 public void setDominator(BlockBegin dominator) { |
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148 this.dominator = dominator; |
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149 } |
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150 |
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151 /** |
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152 * Gets the depth first traversal number of this block. |
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153 * @return the depth first number |
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154 */ |
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155 public int depthFirstNumber() { |
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156 return depthFirstNumber; |
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157 } |
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158 |
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159 /** |
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160 * Gets the linear scan number of this block. |
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161 * @return the linear scan number |
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162 */ |
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163 public int linearScanNumber() { |
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164 return linearScanNumber; |
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165 } |
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166 |
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167 public void setDepthFirstNumber(int depthFirstNumber) { |
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168 assert depthFirstNumber >= 0; |
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169 this.depthFirstNumber = depthFirstNumber; |
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170 } |
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171 |
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172 public void setLinearScanNumber(int linearScanNumber) { |
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173 this.linearScanNumber = linearScanNumber; |
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174 } |
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175 |
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176 /** |
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177 * Set a flag on this block. |
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178 * @param flag the flag to set |
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179 */ |
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180 public void setBlockFlag(BlockFlag flag) { |
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181 blockFlags |= flag.mask; |
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182 } |
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183 |
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184 /** |
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185 * Clear a flag on this block. |
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186 * @param flag the flag to clear |
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187 */ |
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188 public void clearBlockFlag(BlockFlag flag) { |
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189 blockFlags &= ~flag.mask; |
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190 } |
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191 |
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192 public void copyBlockFlag(BlockBegin other, BlockFlag flag) { |
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193 setBlockFlag(flag, other.checkBlockFlag(flag)); |
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194 } |
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195 |
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196 /** |
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197 * Check whether this block has the specified flag set. |
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198 * @param flag the flag to test |
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199 * @return {@code true} if this block has the flag |
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200 */ |
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201 public boolean checkBlockFlag(BlockFlag flag) { |
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202 return (blockFlags & flag.mask) != 0; |
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203 } |
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204 |
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205 /** |
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206 * Iterate over this block, its exception handlers, and its successors, in that order. |
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207 * @param closure the closure to apply to each block |
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208 */ |
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209 public void iteratePreOrder(BlockClosure closure) { |
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210 // XXX: identity hash map might be too slow, consider a boolean array or a mark field |
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211 iterate(new IdentityHashMap<BlockBegin, BlockBegin>(), closure); |
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212 } |
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213 |
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214 /** |
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215 * Iterate over all blocks transitively reachable from this block. |
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216 * @param closure the closure to apply to each block |
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217 * @param predecessors {@code true} if also to include this blocks predecessors |
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218 */ |
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219 public void iterateAnyOrder(BlockClosure closure, boolean predecessors) { |
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220 IdentityHashMap<BlockBegin, BlockBegin> mark = new IdentityHashMap<BlockBegin, BlockBegin>(); |
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221 LinkedList<BlockBegin> queue = new LinkedList<BlockBegin>(); |
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222 queue.offer(this); |
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223 mark.put(this, this); |
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224 BlockBegin block; |
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225 while ((block = queue.poll()) != null) { |
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226 closure.apply(block); |
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227 |
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228 Instruction inst = block; |
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229 ArrayList<BlockBegin> excBlocks = new ArrayList<BlockBegin>(); |
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230 while (inst != null) { |
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231 if (inst instanceof ExceptionEdgeInstruction) { |
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232 excBlocks.add(((ExceptionEdgeInstruction) inst).exceptionEdge()); |
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233 } |
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234 inst = inst.next(); |
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235 } |
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236 while (excBlocks.remove(null)) { |
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237 // nothing |
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238 } |
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239 if (excBlocks.size() > 0) { |
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240 queueBlocks(queue, excBlocks, mark); |
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241 } |
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242 |
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243 queueBlocks(queue, block.end().blockSuccessors(), mark); |
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244 if (predecessors) { |
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245 queueBlockEnds(queue, block.blockPredecessors(), mark); |
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246 } |
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247 } |
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248 } |
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249 |
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250 private void queueBlocks(LinkedList<BlockBegin> queue, List<BlockBegin> list, IdentityHashMap<BlockBegin, BlockBegin> mark) { |
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251 if (list != null) { |
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252 for (BlockBegin b : list) { |
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253 if (!mark.containsKey(b)) { |
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254 queue.offer(b); |
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255 mark.put(b, b); |
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256 } |
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257 } |
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258 } |
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259 } |
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260 |
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261 private void queueBlockEnds(LinkedList<BlockBegin> queue, List<Instruction> list, IdentityHashMap<BlockBegin, BlockBegin> mark) { |
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262 if (list != null) { |
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263 for (Instruction end : list) { |
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264 BlockBegin b = end.block(); |
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265 if (!mark.containsKey(b)) { |
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266 queue.offer(b); |
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267 mark.put(b, b); |
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268 } |
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269 } |
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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 * Gets the bytecode index of this instruction. |
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275 * @return the bytecode index of this instruction |
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276 */ |
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277 public int bci() { |
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278 return bci; |
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279 } |
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280 |
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281 /** |
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282 * Sets the bytecode index of this instruction. |
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283 * @param bci the new bytecode index for this instruction |
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284 */ |
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285 public void setBCI(int bci) { |
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286 this.bci = bci; |
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287 } |
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288 |
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289 private void iterate(IdentityHashMap<BlockBegin, BlockBegin> mark, BlockClosure closure) { |
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290 if (!mark.containsKey(this)) { |
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291 mark.put(this, this); |
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292 closure.apply(this); |
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293 BlockEnd e = end(); |
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294 |
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295 Instruction inst = this; |
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296 ArrayList<BlockBegin> excBlocks = new ArrayList<BlockBegin>(); |
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297 while (inst != null) { |
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298 if (inst instanceof Invoke) { |
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299 excBlocks.add(((Invoke) inst).exceptionEdge()); |
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300 } else if (inst instanceof Throw) { |
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301 excBlocks.add(((Throw) inst).exceptionEdge()); |
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302 } |
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303 inst = inst.next(); |
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304 } |
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305 while (excBlocks.remove(null)) { |
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306 // nothing |
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307 } |
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308 if (excBlocks.size() > 0) { |
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309 iterateReverse(mark, closure, excBlocks); |
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310 } |
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311 |
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312 assert e != null : "block must have block end"; |
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313 iterateReverse(mark, closure, e.blockSuccessors()); |
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314 } |
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315 } |
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316 |
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317 private void iterateReverse(IdentityHashMap<BlockBegin, BlockBegin> mark, BlockClosure closure, List<BlockBegin> list) { |
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318 for (int i = list.size() - 1; i >= 0; i--) { |
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319 list.get(i).iterate(mark, closure); |
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320 } |
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321 } |
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322 |
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323 @Override |
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324 public void accept(ValueVisitor v) { |
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325 v.visitBlockBegin(this); |
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326 } |
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327 |
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328 public void mergeOrClone(FrameStateAccess newState, RiMethod method) { |
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329 FrameState existingState = stateBefore(); |
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330 |
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331 if (existingState == null) { |
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332 // copy state because it is modified |
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333 FrameState duplicate = newState.duplicate(bci()); |
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334 |
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335 if (C1XOptions.UseStackMapTableLiveness && method != null) { |
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336 // if a liveness map is available, use it to invalidate dead locals |
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337 CiBitMap[] livenessMap = method.livenessMap(); |
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338 if (livenessMap != null && bci() >= 0) { |
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339 assert bci() < livenessMap.length; |
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340 CiBitMap liveness = livenessMap[bci()]; |
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341 if (liveness != null) { |
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342 invalidateDeadLocals(duplicate, liveness); |
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343 } |
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344 } |
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345 } |
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346 |
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347 // if the block is a loop header, insert all necessary phis |
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348 if (isParserLoopHeader()) { |
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349 insertLoopPhis(duplicate); |
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350 } |
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351 |
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352 setStateBefore(duplicate); |
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353 } else { |
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354 if (!C1XOptions.AssumeVerifiedBytecode && !existingState.isCompatibleWith(newState)) { |
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355 // stacks or locks do not match--bytecodes would not verify |
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356 throw new CiBailout("stack or locks do not match"); |
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357 } |
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358 |
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359 assert existingState.localsSize() == newState.localsSize(); |
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360 assert existingState.stackSize() == newState.stackSize(); |
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361 |
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362 existingState.merge(this, newState); |
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363 } |
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364 } |
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365 |
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366 private void invalidateDeadLocals(FrameState newState, CiBitMap liveness) { |
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367 int max = newState.localsSize(); |
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368 assert max <= liveness.size(); |
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369 for (int i = 0; i < max; i++) { |
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370 Value x = newState.localAt(i); |
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371 if (x != null) { |
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372 if (!liveness.get(i)) { |
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373 // invalidate the local if it is not live |
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374 newState.invalidateLocal(i); |
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375 } |
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376 } |
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377 } |
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378 } |
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379 |
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380 private void insertLoopPhis(FrameState newState) { |
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381 int stackSize = newState.stackSize(); |
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382 for (int i = 0; i < stackSize; i++) { |
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383 // always insert phis for the stack |
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384 newState.setupPhiForStack(this, i); |
2507
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385 } |
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386 int localsSize = newState.localsSize(); |
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387 for (int i = 0; i < localsSize; i++) { |
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388 Value x = newState.localAt(i); |
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389 if (x != null) { |
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390 newState.setupPhiForLocal(this, i); |
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391 } |
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392 } |
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393 } |
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394 |
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395 public boolean isParserLoopHeader() { |
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396 return checkBlockFlag(BlockFlag.ParserLoopHeader); |
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397 } |
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398 |
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399 public void setParserLoopHeader(boolean value) { |
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400 setBlockFlag(BlockFlag.ParserLoopHeader, value); |
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401 } |
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402 |
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403 private void setBlockFlag(BlockFlag flag, boolean value) { |
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404 if (value) { |
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405 setBlockFlag(flag); |
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406 } else { |
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407 clearBlockFlag(flag); |
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408 } |
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409 } |
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410 |
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411 @Override |
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412 public String toString() { |
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413 StringBuilder builder = new StringBuilder(); |
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414 builder.append("block #"); |
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415 builder.append(blockID); |
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416 builder.append(","); |
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417 builder.append(depthFirstNumber); |
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418 builder.append(" ["); |
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419 boolean hasFlag = false; |
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420 for (BlockFlag f : BlockFlag.values()) { |
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421 if (checkBlockFlag(f)) { |
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422 if (hasFlag) { |
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423 builder.append(' '); |
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424 } |
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425 builder.append(f.name()); |
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426 hasFlag = true; |
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427 } |
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|
428 } |
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|
429 |
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430 builder.append("]"); |
2621
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changed stateAfter FrameState to successor (instead of input), checkstyle fixes, added fixed root node to graph
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431 if (end() != null) { |
2507
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432 builder.append(" -> "); |
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433 boolean hasSucc = false; |
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434 for (BlockBegin s : end().blockSuccessors()) { |
2507
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435 if (hasSucc) { |
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|
436 builder.append(", "); |
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437 } |
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438 builder.append("#"); |
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439 builder.append(s.blockID); |
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440 hasSucc = true; |
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|
441 } |
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|
442 } |
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443 return builder.toString(); |
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|
444 } |
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|
445 |
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|
446 /** |
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|
447 * Get the number of successors. |
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|
448 * @return the number of successors |
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|
449 */ |
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450 public int numberOfSux() { |
2621
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changed stateAfter FrameState to successor (instead of input), checkstyle fixes, added fixed root node to graph
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451 return end().blockSuccessorCount(); |
2507
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452 } |
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|
453 |
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|
454 /** |
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455 * Get the successor at a certain position. |
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|
456 * @param i the position |
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|
457 * @return the successor |
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|
458 */ |
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|
459 public BlockBegin suxAt(int i) { |
2621
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|
460 return end().blockSuccessor(i); |
2507
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|
461 } |
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|
462 |
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|
463 /** |
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|
464 * Get the number of predecessors. |
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|
465 * @return the number of predecessors |
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|
466 */ |
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|
467 public int numberOfPreds() { |
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|
468 // ignore the graph root |
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469 if (predecessors().size() == 1 && predecessors().get(0) == graph().root()) { |
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470 return 0; |
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|
471 } else { |
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|
472 return predecessors().size(); |
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|
473 } |
2507
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|
474 } |
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|
475 |
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|
476 /** |
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|
477 * @return the label associated with the block, used by the LIR |
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|
478 */ |
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|
479 public Label label() { |
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|
480 return lirBlock().label; |
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Pull over of compiler from maxine repository.
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parents:
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|
481 } |
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Pull over of compiler from maxine repository.
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|
482 |
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|
483 public LIRList lir() { |
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|
484 return lirBlock().lir(); |
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Pull over of compiler from maxine repository.
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parents:
diff
changeset
|
485 } |
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Pull over of compiler from maxine repository.
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|
486 |
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|
487 public LIRBlock lirBlock() { |
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|
488 return lirBlock; |
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parents:
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|
489 } |
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Pull over of compiler from maxine repository.
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|
490 |
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|
491 public Instruction predAt(int j) { |
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492 return (Instruction) predecessors().get(j); |
2507
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|
493 } |
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|
494 |
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changeset
|
495 |
2707
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|
496 public boolean isPredecessor(Instruction block) { |
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497 return predecessors().contains(block); |
2507
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|
498 } |
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|
499 |
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|
500 public void printWithoutPhis(LogStream out) { |
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501 // print block id |
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502 BlockEnd end = end(); |
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503 out.print("B").print(blockID).print(" "); |
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504 |
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505 // print flags |
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506 StringBuilder sb = new StringBuilder(8); |
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507 if (isParserLoopHeader()) { |
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508 sb.append("LH"); |
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509 } |
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510 if (sb.length() != 0) { |
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511 out.print('(').print(sb.toString()).print(')'); |
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512 } |
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513 |
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514 // print block bci range |
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515 out.print('[').print(-1).print(", ").print(-1).print(']'); |
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516 |
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517 // print block successors |
2581
4a36a0bd6d18
added GraalGraph to classpath, Node as superclass of Value
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518 if (end != null && end.blockSuccessors().size() > 0) { |
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519 out.print(" ."); |
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520 for (BlockBegin successor : end.blockSuccessors()) { |
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521 out.print(" B").print(successor.blockID); |
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522 } |
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523 } |
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|
524 |
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525 // print predecessors |
2581
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526 if (!blockPredecessors().isEmpty()) { |
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527 out.print(" pred:"); |
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exception handling related changes:
Lukas Stadler <lukas.stadler@jku.at>
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528 for (Instruction pred : blockPredecessors()) { |
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529 out.print(" B").print(pred.block().blockID); |
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530 } |
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531 } |
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532 } |
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|
533 |
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534 @Override |
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535 public void print(LogStream out) { |
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|
536 |
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537 printWithoutPhis(out); |
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538 |
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539 // print phi functions |
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540 boolean hasPhisInLocals = false; |
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541 boolean hasPhisOnStack = false; |
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542 |
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changed stateAfter FrameState to successor (instead of input), checkstyle fixes, added fixed root node to graph
Lukas Stadler <lukas.stadler@jku.at>
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543 if (end() != null && end().stateAfter() != null) { |
2507
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544 FrameState state = stateBefore(); |
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diff
changeset
|
545 |
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546 int i = 0; |
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547 while (!hasPhisOnStack && i < state.stackSize()) { |
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548 Value value = state.stackAt(i); |
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Thomas Wuerthinger <thomas@wuerthinger.net>
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549 hasPhisOnStack = isPhiAtBlock(value); |
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550 if (value != null && !value.isIllegal()) { |
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551 i += value.kind.sizeInSlots(); |
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552 } else { |
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parents:
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|
553 i++; |
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Pull over of compiler from maxine repository.
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|
554 } |
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Pull over of compiler from maxine repository.
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|
555 } |
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Pull over of compiler from maxine repository.
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|
556 |
2564
274360f98f97
Remove inlining (2nd part) removed IRScope
Gilles Duboscq <gilles.duboscq@oracle.com>
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2516
diff
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|
557 for (i = 0; !hasPhisInLocals && i < state.localsSize();) { |
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558 Value value = state.localAt(i); |
274360f98f97
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559 hasPhisInLocals = isPhiAtBlock(value); |
274360f98f97
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|
560 // also ignore illegal HiWords |
274360f98f97
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561 if (value != null && !value.isIllegal()) { |
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parents:
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562 i += value.kind.sizeInSlots(); |
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Remove inlining (2nd part) removed IRScope
Gilles Duboscq <gilles.duboscq@oracle.com>
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563 } else { |
274360f98f97
Remove inlining (2nd part) removed IRScope
Gilles Duboscq <gilles.duboscq@oracle.com>
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564 i++; |
2507
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Pull over of compiler from maxine repository.
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|
565 } |
2564
274360f98f97
Remove inlining (2nd part) removed IRScope
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
2516
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|
566 } |
2507
9ec15d6914ca
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|
567 } |
9ec15d6914ca
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|
568 |
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Pull over of compiler from maxine repository.
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|
569 // print values in locals |
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Pull over of compiler from maxine repository.
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diff
changeset
|
570 if (hasPhisInLocals) { |
9ec15d6914ca
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parents:
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|
571 out.println(); |
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diff
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|
572 out.println("Locals:"); |
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|
573 |
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changeset
|
574 FrameState state = stateBefore(); |
2564
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parents:
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575 int i = 0; |
274360f98f97
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576 while (i < state.localsSize()) { |
274360f98f97
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|
577 Value value = state.localAt(i); |
274360f98f97
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|
578 if (value != null) { |
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Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
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|
579 out.println(stateString(i, value)); |
274360f98f97
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Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
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|
580 // also ignore illegal HiWords |
274360f98f97
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Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
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diff
changeset
|
581 i += value.isIllegal() ? 1 : value.kind.sizeInSlots(); |
274360f98f97
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parents:
2516
diff
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|
582 } else { |
274360f98f97
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Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
2516
diff
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|
583 i++; |
2507
9ec15d6914ca
Pull over of compiler from maxine repository.
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|
584 } |
2564
274360f98f97
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Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
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diff
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|
585 } |
274360f98f97
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Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
2516
diff
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|
586 out.println(); |
2507
9ec15d6914ca
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Thomas Wuerthinger <thomas@wuerthinger.net>
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changeset
|
587 } |
9ec15d6914ca
Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
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changeset
|
588 |
9ec15d6914ca
Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
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|
589 // print values on stack |
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Thomas Wuerthinger <thomas@wuerthinger.net>
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diff
changeset
|
590 if (hasPhisOnStack) { |
9ec15d6914ca
Pull over of compiler from maxine repository.
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diff
changeset
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591 out.println(); |
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Pull over of compiler from maxine repository.
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parents:
diff
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|
592 out.println("Stack:"); |
9ec15d6914ca
Pull over of compiler from maxine repository.
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parents:
diff
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|
593 int i = 0; |
9ec15d6914ca
Pull over of compiler from maxine repository.
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diff
changeset
|
594 while (i < stateBefore().stackSize()) { |
9ec15d6914ca
Pull over of compiler from maxine repository.
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diff
changeset
|
595 Value value = stateBefore().stackAt(i); |
9ec15d6914ca
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diff
changeset
|
596 if (value != null) { |
9ec15d6914ca
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parents:
diff
changeset
|
597 out.println(stateString(i, value)); |
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parents:
diff
changeset
|
598 i += value.kind.sizeInSlots(); |
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parents:
diff
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|
599 } else { |
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parents:
diff
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|
600 i++; |
9ec15d6914ca
Pull over of compiler from maxine repository.
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parents:
diff
changeset
|
601 } |
9ec15d6914ca
Pull over of compiler from maxine repository.
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diff
changeset
|
602 } |
9ec15d6914ca
Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
changeset
|
603 } |
9ec15d6914ca
Pull over of compiler from maxine repository.
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parents:
diff
changeset
|
604 |
9ec15d6914ca
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parents:
diff
changeset
|
605 } |
9ec15d6914ca
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parents:
diff
changeset
|
606 |
9ec15d6914ca
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parents:
diff
changeset
|
607 |
9ec15d6914ca
Pull over of compiler from maxine repository.
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parents:
diff
changeset
|
608 |
9ec15d6914ca
Pull over of compiler from maxine repository.
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parents:
diff
changeset
|
609 /** |
9ec15d6914ca
Pull over of compiler from maxine repository.
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diff
changeset
|
610 * Determines if a given instruction is a phi whose {@linkplain Phi#block() join block} is a given block. |
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parents:
diff
changeset
|
611 * |
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parents:
diff
changeset
|
612 * @param value the instruction to test |
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parents:
diff
changeset
|
613 * @param block the block that may be the join block of {@code value} if {@code value} is a phi |
9ec15d6914ca
Pull over of compiler from maxine repository.
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parents:
diff
changeset
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614 * @return {@code true} if {@code value} is a phi and its join block is {@code block} |
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Thomas Wuerthinger <thomas@wuerthinger.net>
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diff
changeset
|
615 */ |
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diff
changeset
|
616 private boolean isPhiAtBlock(Value value) { |
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617 return value instanceof Phi && ((Phi) value).block() == this; |
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diff
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|
618 } |
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Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
changeset
|
619 |
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parents:
diff
changeset
|
620 |
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parents:
diff
changeset
|
621 /** |
9ec15d6914ca
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parents:
diff
changeset
|
622 * Formats a given instruction as a value in a {@linkplain FrameState frame state}. If the instruction is a phi defined at a given |
2582
768d77a1c7af
new node layout: Instruction
Lukas Stadler <lukas.stadler@jku.at>
parents:
2581
diff
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|
623 * block, its {@linkplain Phi#phiInputCount() inputs} are appended to the returned string. |
2507
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Pull over of compiler from maxine repository.
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parents:
diff
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|
624 * |
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Pull over of compiler from maxine repository.
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parents:
diff
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625 * @param index the index of the value in the frame state |
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626 * @param value the frame state value |
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627 * @param block if {@code value} is a phi, then its inputs are formatted if {@code block} is its |
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628 * {@linkplain Phi#block() join point} |
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629 * @return the instruction representation as a string |
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630 */ |
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631 public String stateString(int index, Value value) { |
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632 StringBuilder sb = new StringBuilder(30); |
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633 sb.append(String.format("%2d %s", index, Util.valueString(value))); |
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634 if (value instanceof Phi) { |
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635 Phi phi = (Phi) value; |
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636 // print phi operands |
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637 if (phi.block() == this) { |
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638 sb.append(" ["); |
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639 for (int j = 0; j < phi.phiInputCount(); j++) { |
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640 sb.append(' '); |
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641 Value operand = phi.inputAt(j); |
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642 if (operand != null) { |
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643 sb.append(Util.valueString(operand)); |
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644 } else { |
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645 sb.append("NULL"); |
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646 } |
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647 } |
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648 sb.append("] "); |
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649 } |
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650 } |
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651 if (value != null && value.hasSubst()) { |
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652 sb.append("alias ").append(Util.valueString(value.subst())); |
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653 } |
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654 return sb.toString(); |
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655 } |
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656 |
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657 @Override |
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658 public String shortName() { |
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659 return "BlockBegin #" + blockID; |
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660 } |
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661 |
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662 /** |
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663 * Iterates over all successors of this block: successors of the end node and exception handler. |
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664 */ |
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665 public void allSuccessorsDo(boolean backwards, BlockClosure closure) { |
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666 if (backwards) { |
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667 for (int i = numberOfSux() - 1; i >= 0; i--) { |
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668 closure.apply(suxAt(i)); |
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669 } |
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670 } else { |
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671 for (int i = 0; i < numberOfSux(); i++) { |
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672 closure.apply(suxAt(i)); |
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673 } |
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674 } |
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675 for (Instruction x = next(); x != null; x = x.next()) { |
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676 if (x instanceof ExceptionEdgeInstruction && ((ExceptionEdgeInstruction) x).exceptionEdge() != null) { |
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677 closure.apply(((ExceptionEdgeInstruction) x).exceptionEdge()); |
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678 } |
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679 } |
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680 } |
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681 |
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682 |
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683 } |