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annotate c1x4hotspotsrc/HotSpotVM/src/com/sun/hotspot/c1x/HotSpotField.java @ 2055:99ad52189524

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Refactorings to get towards less CRI overhead.
author Thomas Wuerthinger <wuerthinger@ssw.jku.at>
date Thu, 13 Jan 2011 17:45:17 +0100
parents 3c0a889a176b
children 89bf01e6b049
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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
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22 package com.sun.hotspot.c1x;
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23
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24 import com.sun.cri.ci.CiConstant;
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25 import com.sun.cri.ci.CiKind;
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26 import com.sun.cri.ri.RiField;
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27 import com.sun.cri.ri.RiType;
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28
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29 /**
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30 * Represents a field in a HotSpot type.
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31 *
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32 * @author Thomas Wuerthinger, Lukas Stadler
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33 */
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34 public class HotSpotField extends CompilerObject implements RiField {
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35
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36 private final RiType holder;
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37 private final String name;
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38 private final RiType type;
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39 private final int offset;
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40 private CiConstant constant;
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41
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42 public HotSpotField(RiType holder, String name, RiType type, int offset) {
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43 this.holder = holder;
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44 this.name = name;
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45 this.type = type;
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46 this.offset = offset;
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47 }
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48
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49 @Override
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50 public int accessFlags() {
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51 // TODO Auto-generated method stub
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52 return 0;
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53 }
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54
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55 @Override
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56 public CiConstant constantValue(Object object) {
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57 if (object == null) {
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58 // Constant part only valid for static fields.
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59 return constant;
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60 }
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61 return null;
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62 }
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63
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64 @Override
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65 public RiType holder() {
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66 return holder;
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67 }
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68
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69 @Override
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70 public boolean equals(Object obj) {
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71 if (obj instanceof HotSpotField) {
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72 HotSpotField other = (HotSpotField) obj;
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73 return other.offset == offset && other.holder.equals(holder());
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74 }
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75 return false;
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76 }
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77
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78 @Override
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79 public boolean isResolved() {
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80 return offset != -1;
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81 }
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82
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83 @Override
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84 public CiKind kind() {
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85 return type().kind();
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86 }
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87
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88 @Override
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89 public String name() {
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90 return name;
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91 }
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92
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93 @Override
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94 public RiType type() {
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95 return type;
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96 }
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97
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98 public int offset() {
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99 return offset;
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100 }
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101
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102 @Override
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103 public String toString() {
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104 return "HotSpotField<" + holder.name() + "." + name + ">";
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105 }
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106
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107 }