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annotate jvmci/jdk.internal.jvmci.hotspot/src/jdk/internal/jvmci/hotspot/HotSpotReferenceMap.java @ 22190:488d54275360

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Rename LIRKind.derivedReference to LIRKind.unknownReference.
author Roland Schatz <roland.schatz@oracle.com>
date Thu, 09 Jul 2015 14:39:08 +0200
parents ae67bd822493
children 9c811a5e6a62
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1 /*
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2 * Copyright (c) 2009, 2015, 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 jdk.internal.jvmci.hotspot;
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24
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25 import static jdk.internal.jvmci.code.ValueUtil.*;
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26
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27 import java.util.*;
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28
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29 import jdk.internal.jvmci.code.*;
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30 import jdk.internal.jvmci.common.*;
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31 import jdk.internal.jvmci.meta.*;
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32
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33 public final class HotSpotReferenceMap extends ReferenceMap {
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34
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35 private Location[] objects;
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36 private Location[] derivedBase;
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37 private int[] sizeInBytes;
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38 private int maxRegisterSize;
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39
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40 private ArrayList<Value> objectValues;
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41 private int objectCount;
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42
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43 private final TargetDescription target;
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44 private final int totalFrameSize;
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45
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46 public HotSpotReferenceMap(TargetDescription target, int totalFrameSize) {
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47 this.target = target;
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48 this.objectCount = 0;
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49 this.totalFrameSize = totalFrameSize;
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50 }
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51
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52 @Override
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53 public void reset() {
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54 objects = null;
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55 derivedBase = null;
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56 sizeInBytes = null;
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57 maxRegisterSize = 0;
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58
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59 objectValues = new ArrayList<>();
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60 objectCount = 0;
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61 }
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62
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63 @Override
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64 public void addLiveValue(Value v) {
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65 if (isConstant(v)) {
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66 return;
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67 }
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68 LIRKind lirKind = v.getLIRKind();
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69 if (!lirKind.isValue()) {
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70 objectValues.add(v);
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71 if (lirKind.isUnknownReference()) {
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72 objectCount++;
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73 } else {
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74 objectCount += lirKind.getReferenceCount();
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75 }
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76 }
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77 if (isRegister(v)) {
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78 int size = target.getSizeInBytes(lirKind.getPlatformKind());
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79 if (size > maxRegisterSize) {
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80 maxRegisterSize = size;
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81 }
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82 }
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83 }
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84
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85 @Override
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86 public void finish() {
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87 objects = new Location[objectCount];
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88 derivedBase = new Location[objectCount];
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89 sizeInBytes = new int[objectCount];
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90
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91 int idx = 0;
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92 for (Value obj : objectValues) {
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93 LIRKind kind = obj.getLIRKind();
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94 int bytes = bytesPerElement(kind);
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95 if (kind.isUnknownReference()) {
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96 throw JVMCIError.unimplemented("derived references not yet implemented");
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97 } else {
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98 for (int i = 0; i < kind.getPlatformKind().getVectorLength(); i++) {
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99 if (kind.isReference(i)) {
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100 objects[idx] = toLocation(obj, i * bytes);
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101 derivedBase[idx] = null;
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102 sizeInBytes[idx] = bytes;
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103 idx++;
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104 }
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105 }
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106 }
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107 }
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108
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109 assert idx == objectCount;
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110 objectValues = null;
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111 objectCount = 0;
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112 }
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113
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114 private int bytesPerElement(LIRKind kind) {
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115 PlatformKind platformKind = kind.getPlatformKind();
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116 return target.getSizeInBytes(platformKind) / platformKind.getVectorLength();
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117 }
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118
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119 private Location toLocation(Value v, int offset) {
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120 if (isRegister(v)) {
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121 return Location.subregister(asRegister(v), offset);
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122 } else {
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123 StackSlot s = asStackSlot(v);
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124 return Location.stack(s.getOffset(totalFrameSize) + offset);
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125 }
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126 }
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127
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128 @Override
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129 public int hashCode() {
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130 throw new UnsupportedOperationException();
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131 }
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132
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133 @Override
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134 public boolean equals(Object obj) {
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135 if (this == obj) {
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136 return true;
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137 }
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138 if (obj instanceof HotSpotReferenceMap) {
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139 HotSpotReferenceMap that = (HotSpotReferenceMap) obj;
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140 if (Arrays.equals(objects, that.objects) && this.target.equals(that.target)) {
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141 return true;
d60dd21329f2 implemented .equals() for CompilationResult and the objects it encapsulates
Doug Simon <doug.simon@oracle.com>
parents: 16114
diff changeset
142 }
d60dd21329f2 implemented .equals() for CompilationResult and the objects it encapsulates
Doug Simon <doug.simon@oracle.com>
parents: 16114
diff changeset
143 }
d60dd21329f2 implemented .equals() for CompilationResult and the objects it encapsulates
Doug Simon <doug.simon@oracle.com>
parents: 16114
diff changeset
144 return false;
d60dd21329f2 implemented .equals() for CompilationResult and the objects it encapsulates
Doug Simon <doug.simon@oracle.com>
parents: 16114
diff changeset
145 }
d60dd21329f2 implemented .equals() for CompilationResult and the objects it encapsulates
Doug Simon <doug.simon@oracle.com>
parents: 16114
diff changeset
146
20981
92fc95e8667d Add more efficient implementation of HotSpotReferenceMap
Tom Rodriguez <tom.rodriguez@oracle.com>
parents: 18706
diff changeset
147 @Override
92fc95e8667d Add more efficient implementation of HotSpotReferenceMap
Tom Rodriguez <tom.rodriguez@oracle.com>
parents: 18706
diff changeset
148 public String toString() {
21730
b9f9b8af17ff Simplify interface to reference map
Tom Rodriguez <tom.rodriguez@oracle.com>
parents: 21556
diff changeset
149 return Arrays.toString(objects);
20981
92fc95e8667d Add more efficient implementation of HotSpotReferenceMap
Tom Rodriguez <tom.rodriguez@oracle.com>
parents: 18706
diff changeset
150 }
13725
8d8732e14447 Refactor reference maps.
Roland Schatz <roland.schatz@oracle.com>
parents:
diff changeset
151 }