Mercurial > hg > graal-compiler
annotate graal/GraalCompiler/src/com/sun/c1x/alloc/LIRInsertionBuffer.java @ 2776:398b8fa5dc81
Removed stateAfter from BlockEnd class. Clean up.
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Tue, 24 May 2011 13:55:56 +0200 |
parents | 16b9a8b5ad39 |
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rev | line source |
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1 /* |
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2 * Copyright (c) 2009, 2010, 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.alloc; |
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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.sun.c1x.lir.*; |
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28 import com.sun.c1x.util.*; |
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29 import com.sun.cri.ci.*; |
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30 |
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31 /** |
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32 * |
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33 * @author Thomas Wuerthinger |
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34 */ |
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35 public final class LIRInsertionBuffer { |
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36 |
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37 private LIRList lir; // the lir list where ops of this buffer should be inserted later (null when uninitialized) |
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38 |
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39 // list of insertion points. index and count are stored alternately: |
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40 // indexAndCount[i * 2]: the index into lir list where "count" ops should be inserted |
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41 // indexAndCount[i * 2 + 1]: the number of ops to be inserted at index |
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42 private final IntList indexAndCount; |
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43 |
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44 // the LIROps to be inserted |
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45 private final List<LIRInstruction> ops; |
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46 |
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47 private void appendNew(int index, int count) { |
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48 indexAndCount.add(index); |
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49 indexAndCount.add(count); |
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50 } |
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51 |
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52 private void setCountAt(int i, int value) { |
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53 indexAndCount.set((i << 1) + 1, value); |
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54 } |
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55 |
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56 LIRInsertionBuffer() { |
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57 ops = new ArrayList<LIRInstruction>(8); |
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58 indexAndCount = new IntList(8); |
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59 } |
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60 |
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61 // must be called before using the insertion buffer |
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62 void init(LIRList lir) { |
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63 assert !initialized() : "already initialized"; |
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64 this.lir = lir; |
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65 indexAndCount.clear(); |
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66 ops.clear(); |
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67 } |
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68 |
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69 boolean initialized() { |
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70 return lir != null; |
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71 } |
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72 |
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73 // called automatically when the buffer is appended to the LIRList |
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74 public void finish() { |
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75 lir = null; |
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76 } |
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77 |
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78 // accessors |
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79 public LIRList lirList() { |
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80 return lir; |
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81 } |
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82 |
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83 public int numberOfInsertionPoints() { |
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84 return indexAndCount.size() >> 1; |
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85 } |
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86 |
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87 public int indexAt(int i) { |
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88 return indexAndCount.get((i << 1)); |
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89 } |
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90 |
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91 public int countAt(int i) { |
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92 return indexAndCount.get((i << 1) + 1); |
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93 } |
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94 |
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95 public int numberOfOps() { |
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96 return ops.size(); |
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97 } |
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98 |
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99 public LIRInstruction opAt(int i) { |
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100 return ops.get(i); |
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101 } |
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102 |
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103 void move(int index, CiValue src, CiValue dst, LIRDebugInfo info) { |
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104 append(index, new LIROp1(LIROpcode.Move, src, dst, dst.kind, info)); |
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105 } |
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106 |
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107 // Implementation of LIRInsertionBuffer |
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108 |
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109 private void append(int index, LIRInstruction op) { |
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110 assert indexAndCount.size() % 2 == 0 : "must have a count for each index"; |
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111 |
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112 int i = numberOfInsertionPoints() - 1; |
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113 if (i < 0 || indexAt(i) < index) { |
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114 appendNew(index, 1); |
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115 } else { |
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116 assert indexAt(i) == index : "can append LIROps in ascending order only"; |
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117 assert countAt(i) > 0 : "check"; |
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118 setCountAt(i, countAt(i) + 1); |
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119 } |
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120 ops.add(op); |
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121 |
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122 assert verify(); |
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123 } |
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124 |
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125 private boolean verify() { |
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126 int sum = 0; |
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127 int prevIdx = -1; |
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Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
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128 |
9ec15d6914ca
Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
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129 for (int i = 0; i < numberOfInsertionPoints(); i++) { |
9ec15d6914ca
Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
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130 assert prevIdx < indexAt(i) : "index must be ordered ascending"; |
9ec15d6914ca
Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
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131 sum += countAt(i); |
9ec15d6914ca
Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
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132 } |
9ec15d6914ca
Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
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133 assert sum == numberOfOps() : "wrong total sum"; |
9ec15d6914ca
Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
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134 return true; |
9ec15d6914ca
Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
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135 } |
9ec15d6914ca
Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
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changeset
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136 } |