Mercurial > hg > graal-compiler
annotate c1x4hotspotsrc/HotSpotVM/src/com/sun/hotspot/c1x/HotSpotSignature.java @ 2062:231bf6b9f5ad
Added caching for constant pool entries.
author | Thomas Wuerthinger <wuerthinger@ssw.jku.at> |
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date | Sat, 22 Jan 2011 17:31:11 +0100 |
parents | 3c0a889a176b |
children | 569d3fe7d65c |
rev | line source |
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1 /* |
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2 * Copyright (c) 2010 Sun Microsystems, Inc. All rights reserved. |
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3 * |
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4 * Sun Microsystems, Inc. has intellectual property rights relating to technology embodied in the product |
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5 * that is described in this document. In particular, and without limitation, these intellectual property |
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6 * rights may include one or more of the U.S. patents listed at http://www.sun.com/patents and one or |
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7 * more additional patents or pending patent applications in the U.S. and in other countries. |
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8 * |
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9 * U.S. Government Rights - Commercial software. Government users are subject to the Sun |
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10 * Microsystems, Inc. standard license agreement and applicable provisions of the FAR and its |
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11 * supplements. |
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12 * |
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13 * Use is subject to license terms. Sun, Sun Microsystems, the Sun logo, Java and Solaris are trademarks or |
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14 * registered trademarks of Sun Microsystems, Inc. in the U.S. and other countries. All SPARC trademarks |
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15 * are used under license and are trademarks or registered trademarks of SPARC International, Inc. in the |
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16 * U.S. and other countries. |
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17 * |
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18 * UNIX is a registered trademark in the U.S. and other countries, exclusively licensed through X/Open |
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19 * Company, Ltd. |
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20 */ |
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21 package com.sun.hotspot.c1x; |
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22 |
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23 import java.util.*; |
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24 |
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25 import com.sun.cri.ci.*; |
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26 import com.sun.cri.ri.*; |
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27 |
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28 /** |
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29 * Represents a method signature. |
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30 * |
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31 * @author Thomas Wuerthinger, Lukas Stadler |
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32 */ |
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33 public class HotSpotSignature extends CompilerObject implements RiSignature { |
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34 |
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35 private final List<String> arguments = new ArrayList<String>(); |
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36 private final String returnType; |
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37 private final String originalString; |
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38 private RiType[] argumentTypes; |
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39 private RiType returnTypeCache; |
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40 |
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41 public HotSpotSignature(String signature) { |
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42 assert signature.length() > 0; |
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43 this.originalString = signature; |
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44 |
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45 if (signature.charAt(0) == '(') { |
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46 int cur = 1; |
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47 while (cur < signature.length() && signature.charAt(cur) != ')') { |
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48 int nextCur = parseSignature(signature, cur); |
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49 arguments.add(signature.substring(cur, nextCur)); |
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50 cur = nextCur; |
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51 } |
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52 |
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53 cur++; |
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54 int nextCur = parseSignature(signature, cur); |
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55 returnType = signature.substring(cur, nextCur); |
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56 assert nextCur == signature.length(); |
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57 } else { |
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58 returnType = null; |
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59 } |
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60 } |
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61 |
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62 private int parseSignature(String signature, int cur) { |
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63 char first; |
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64 do { |
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65 first = signature.charAt(cur++); |
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66 } while (first == '['); |
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67 |
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68 switch (first) { |
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69 case 'L': |
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70 while (signature.charAt(cur) != ';') { |
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71 cur++; |
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72 } |
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73 cur++; |
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74 break; |
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75 case 'V': |
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76 case 'I': |
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77 case 'B': |
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78 case 'C': |
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79 case 'D': |
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80 case 'F': |
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81 case 'J': |
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82 case 'S': |
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83 case 'Z': |
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84 break; |
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85 default: |
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86 assert false; |
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87 } |
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88 return cur; |
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89 } |
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90 |
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91 @Override |
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92 public int argumentCount(boolean withReceiver) { |
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93 return arguments.size() + (withReceiver ? 1 : 0); |
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94 } |
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95 |
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96 @Override |
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97 public CiKind argumentKindAt(int index) { |
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98 return CiKind.fromTypeString(arguments.get(index)); |
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99 } |
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100 |
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101 @Override |
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102 public int argumentSlots(boolean withReceiver) { |
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103 |
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104 int argSlots = 0; |
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105 for (int i = 0; i < argumentCount(false); i++) { |
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106 argSlots += argumentKindAt(i).sizeInSlots(); |
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107 } |
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108 |
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109 return argSlots + (withReceiver ? 1 : 0); |
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110 } |
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111 |
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112 @Override |
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113 public RiType argumentTypeAt(int index, RiType accessingClass) { |
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114 if (argumentTypes == null) { |
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115 argumentTypes = new RiType[arguments.size()]; |
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116 } |
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117 RiType type = argumentTypes[index]; |
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118 if (type == null) { |
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119 type = Compiler.getVMEntries().RiSignature_lookupType(arguments.get(index), (HotSpotTypeResolved) accessingClass); |
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120 argumentTypes[index] = type; |
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121 } |
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122 return type; |
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123 } |
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124 |
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125 @Override |
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126 public String asString() { |
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127 return originalString; |
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128 } |
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129 |
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130 @Override |
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131 public CiKind returnKind() { |
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132 return CiKind.fromTypeString(returnType); |
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133 } |
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134 |
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135 @Override |
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136 public RiType returnType(RiType accessingClass) { |
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137 if (returnTypeCache == null) { |
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138 returnTypeCache = Compiler.getVMEntries().RiSignature_lookupType(returnType, (HotSpotTypeResolved) accessingClass); |
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139 } |
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140 return returnTypeCache; |
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141 } |
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142 |
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143 @Override |
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144 public String toString() { |
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145 return "HotSpotSignature<" + originalString + ">"; |
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146 } |
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147 |
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148 } |