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annotate c1x4hotspotsrc/HotSpotVM/src/com/sun/hotspot/c1x/HotSpotSignature.java @ 2054:3c0a889a176b

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Added GC stats. Enabling intrinsics.
author Thomas Wuerthinger <wuerthinger@ssw.jku.at>
date Wed, 12 Jan 2011 19:14:32 +0100
parents 79d04223b8a5
children 569d3fe7d65c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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 }