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annotate graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/SpecializationGroup.java @ 11442:2868b55001d4

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Truffle-DSL: fixed specializationg grouping failed with guards using base types.
author Christian Humer <christian.humer@gmail.com>
date Wed, 28 Aug 2013 01:45:13 +0200
parents 7fc3e1fb3965
children b33783cbd8ce
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1 /*
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2 * Copyright (c) 2012, 2012, 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.oracle.truffle.dsl.processor.node;
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24
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25 import java.util.*;
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26
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27 import javax.lang.model.type.*;
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28
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29 import com.oracle.truffle.dsl.processor.*;
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30 import com.oracle.truffle.dsl.processor.template.*;
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31 import com.oracle.truffle.dsl.processor.template.TemplateMethod.Signature;
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32 import com.oracle.truffle.dsl.processor.typesystem.*;
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33
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34 /**
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35 * Class creates groups of specializations to optimize the layout of generated executeAndSpecialize
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36 * and generic execute methods.
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37 */
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38 public final class SpecializationGroup {
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39
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40 private final List<String> assumptions;
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41 private final List<TypeGuard> typeGuards;
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42 private final List<GuardData> guards;
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43
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44 private final SpecializationData specialization;
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45 private final List<SpecializationGroup> children = new ArrayList<>();
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46
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47 private SpecializationGroup parent;
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48
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49 private SpecializationGroup(SpecializationData data) {
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50 this.assumptions = new ArrayList<>();
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51 this.typeGuards = new ArrayList<>();
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52 this.guards = new ArrayList<>();
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53 this.specialization = data;
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54
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55 this.assumptions.addAll(data.getAssumptions());
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56 Signature sig = data.getSignature();
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57 for (int i = 1; i < sig.size(); i++) {
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58 typeGuards.add(new TypeGuard(sig.get(i), i - 1));
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59 }
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60 this.guards.addAll(data.getGuards());
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61 }
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62
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63 public SpecializationGroup(List<SpecializationGroup> children, List<String> assumptionMatches, List<TypeGuard> typeGuardsMatches, List<GuardData> guardMatches) {
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64 this.assumptions = assumptionMatches;
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65 this.typeGuards = typeGuardsMatches;
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66 this.guards = guardMatches;
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67 this.specialization = null;
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68 updateChildren(children);
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69 }
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70
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71 public List<TypeGuard> getAllGuards() {
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72 List<TypeGuard> collectedGuards = new ArrayList<>();
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73 collectedGuards.addAll(typeGuards);
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74 if (parent != null) {
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75 collectedGuards.addAll(parent.getAllGuards());
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76 }
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77 return collectedGuards;
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78 }
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79
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80 public TypeGuard findTypeGuard(int signatureIndex) {
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81 for (TypeGuard guard : typeGuards) {
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82 if (guard.getSignatureIndex() == signatureIndex) {
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83 return guard;
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84 }
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85 }
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86 return null;
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87 }
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88
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89 public List<GuardData> getElseConnectableGuards() {
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90 if (!getTypeGuards().isEmpty() || !getAssumptions().isEmpty()) {
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91 return Collections.emptyList();
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92 }
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93
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94 if (getGuards().isEmpty()) {
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95 return Collections.emptyList();
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96 }
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97
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98 List<GuardData> elseConnectableGuards = new ArrayList<>();
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99 int guardIndex = 0;
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100 while (guardIndex < getGuards().size() && findNegatedGuardInPrevious(getGuards().get(guardIndex)) != null) {
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101 elseConnectableGuards.add(getGuards().get(guardIndex));
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102 guardIndex++;
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103 }
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104
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105 return elseConnectableGuards;
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106 }
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107
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108 private GuardData findNegatedGuardInPrevious(GuardData guard) {
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109 SpecializationGroup previous = this;
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110 while ((previous = previous.getPreviousGroup()) != null) {
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111 List<GuardData> elseConnectedGuards = previous.getElseConnectableGuards();
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112
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113 if (previous == null || previous.getGuards().size() != elseConnectedGuards.size() + 1) {
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114 return null;
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115 }
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116 GuardData previousGuard = previous.getGuards().get(elseConnectedGuards.size());
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117 if (guard.getMethod().equals(previousGuard.getMethod())) {
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118 assert guard.isNegated() != previousGuard.isNegated();
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119 return guard;
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120 }
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121 }
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122 return null;
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123 }
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124
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125 private void updateChildren(List<SpecializationGroup> childs) {
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126 if (!children.isEmpty()) {
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diff changeset
127 children.clear();
4f52b08bd2f9 Truffle-DSL: Implemented specialization grouping for generic cases.
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parents:
diff changeset
128 }
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parents:
diff changeset
129 this.children.addAll(childs);
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parents:
diff changeset
130 for (SpecializationGroup child : childs) {
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parents:
diff changeset
131 child.parent = this;
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parents:
diff changeset
132 }
4f52b08bd2f9 Truffle-DSL: Implemented specialization grouping for generic cases.
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parents:
diff changeset
133 }
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parents:
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134
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135 public SpecializationGroup getParent() {
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diff changeset
136 return parent;
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parents:
diff changeset
137 }
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diff changeset
138
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diff changeset
139 public List<String> getAssumptions() {
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140 return assumptions;
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parents:
diff changeset
141 }
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142
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143 public List<TypeGuard> getTypeGuards() {
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144 return typeGuards;
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diff changeset
145 }
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parents:
diff changeset
146
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147 public List<GuardData> getGuards() {
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148 return guards;
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parents:
diff changeset
149 }
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150
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151 public List<SpecializationGroup> getChildren() {
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152 return children;
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153 }
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154
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155 public SpecializationData getSpecialization() {
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156 return specialization;
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157 }
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158
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159 private static SpecializationGroup combine(List<SpecializationGroup> groups) {
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160 if (groups.isEmpty()) {
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161 throw new IllegalArgumentException("empty combinations");
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parents:
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162 }
4f52b08bd2f9 Truffle-DSL: Implemented specialization grouping for generic cases.
Christian Humer <christian.humer@gmail.com>
parents:
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163 if (groups.size() == 1) {
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Christian Humer <christian.humer@gmail.com>
parents:
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164 return null;
4f52b08bd2f9 Truffle-DSL: Implemented specialization grouping for generic cases.
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parents:
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165 }
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parents:
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166
4f52b08bd2f9 Truffle-DSL: Implemented specialization grouping for generic cases.
Christian Humer <christian.humer@gmail.com>
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167 List<String> assumptionMatches = new ArrayList<>();
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168 List<TypeGuard> typeGuardsMatches = new ArrayList<>();
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169 List<GuardData> guardMatches = new ArrayList<>();
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170
4f52b08bd2f9 Truffle-DSL: Implemented specialization grouping for generic cases.
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diff changeset
171 SpecializationGroup first = groups.get(0);
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parents:
diff changeset
172 List<SpecializationGroup> others = groups.subList(1, groups.size());
4f52b08bd2f9 Truffle-DSL: Implemented specialization grouping for generic cases.
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173
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diff changeset
174 outer: for (String assumption : first.assumptions) {
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175 for (SpecializationGroup other : others) {
4f52b08bd2f9 Truffle-DSL: Implemented specialization grouping for generic cases.
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parents:
diff changeset
176 if (!other.assumptions.contains(assumption)) {
4f52b08bd2f9 Truffle-DSL: Implemented specialization grouping for generic cases.
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177 // assumptions can be combined unordered
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178 continue outer;
4f52b08bd2f9 Truffle-DSL: Implemented specialization grouping for generic cases.
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parents:
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179 }
4f52b08bd2f9 Truffle-DSL: Implemented specialization grouping for generic cases.
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180 }
4f52b08bd2f9 Truffle-DSL: Implemented specialization grouping for generic cases.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
181 assumptionMatches.add(assumption);
4f52b08bd2f9 Truffle-DSL: Implemented specialization grouping for generic cases.
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parents:
diff changeset
182 }
4f52b08bd2f9 Truffle-DSL: Implemented specialization grouping for generic cases.
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diff changeset
183
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diff changeset
184 outer: for (TypeGuard typeGuard : first.typeGuards) {
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185 for (SpecializationGroup other : others) {
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diff changeset
186 if (!other.typeGuards.contains(typeGuard)) {
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187 // type guards can be combined unordered
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188 continue outer;
11195
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parents:
diff changeset
189 }
4f52b08bd2f9 Truffle-DSL: Implemented specialization grouping for generic cases.
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parents:
diff changeset
190 }
4f52b08bd2f9 Truffle-DSL: Implemented specialization grouping for generic cases.
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parents:
diff changeset
191 typeGuardsMatches.add(typeGuard);
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parents:
diff changeset
192 }
4f52b08bd2f9 Truffle-DSL: Implemented specialization grouping for generic cases.
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parents:
diff changeset
193
4f52b08bd2f9 Truffle-DSL: Implemented specialization grouping for generic cases.
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parents:
diff changeset
194 outer: for (GuardData guard : first.guards) {
4f52b08bd2f9 Truffle-DSL: Implemented specialization grouping for generic cases.
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diff changeset
195 for (SpecializationGroup other : others) {
4f52b08bd2f9 Truffle-DSL: Implemented specialization grouping for generic cases.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
196 if (!other.guards.contains(guard)) {
4f52b08bd2f9 Truffle-DSL: Implemented specialization grouping for generic cases.
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parents:
diff changeset
197 // we must break here. One guard may depend on the other.
4f52b08bd2f9 Truffle-DSL: Implemented specialization grouping for generic cases.
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parents:
diff changeset
198 break outer;
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parents:
diff changeset
199 }
4f52b08bd2f9 Truffle-DSL: Implemented specialization grouping for generic cases.
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parents:
diff changeset
200 }
4f52b08bd2f9 Truffle-DSL: Implemented specialization grouping for generic cases.
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parents:
diff changeset
201 guardMatches.add(guard);
4f52b08bd2f9 Truffle-DSL: Implemented specialization grouping for generic cases.
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parents:
diff changeset
202 }
4f52b08bd2f9 Truffle-DSL: Implemented specialization grouping for generic cases.
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parents:
diff changeset
203
11442
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diff changeset
204 // check for guards for required type casts
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parents: 11201
diff changeset
205 for (Iterator<GuardData> iterator = guardMatches.iterator(); iterator.hasNext();) {
2868b55001d4 Truffle-DSL: fixed specializationg grouping failed with guards using base types.
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parents: 11201
diff changeset
206 GuardData guardMatch = iterator.next();
2868b55001d4 Truffle-DSL: fixed specializationg grouping failed with guards using base types.
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parents: 11201
diff changeset
207
2868b55001d4 Truffle-DSL: fixed specializationg grouping failed with guards using base types.
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parents: 11201
diff changeset
208 List<TypeMirror> guardTypes = TemplateMethod.getSignatureTypes(guardMatch.getParameters());
2868b55001d4 Truffle-DSL: fixed specializationg grouping failed with guards using base types.
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parents: 11201
diff changeset
209 for (int i = 0; i < guardTypes.size(); i++) {
2868b55001d4 Truffle-DSL: fixed specializationg grouping failed with guards using base types.
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parents: 11201
diff changeset
210 TypeMirror guardType = guardTypes.get(i);
2868b55001d4 Truffle-DSL: fixed specializationg grouping failed with guards using base types.
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parents: 11201
diff changeset
211 int signatureIndex = i + 1;
2868b55001d4 Truffle-DSL: fixed specializationg grouping failed with guards using base types.
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diff changeset
212
2868b55001d4 Truffle-DSL: fixed specializationg grouping failed with guards using base types.
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diff changeset
213 // object guards can be safely moved up
2868b55001d4 Truffle-DSL: fixed specializationg grouping failed with guards using base types.
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parents: 11201
diff changeset
214 if (Utils.isObject(guardType)) {
2868b55001d4 Truffle-DSL: fixed specializationg grouping failed with guards using base types.
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parents: 11201
diff changeset
215 continue;
2868b55001d4 Truffle-DSL: fixed specializationg grouping failed with guards using base types.
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parents: 11201
diff changeset
216 }
2868b55001d4 Truffle-DSL: fixed specializationg grouping failed with guards using base types.
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diff changeset
217
2868b55001d4 Truffle-DSL: fixed specializationg grouping failed with guards using base types.
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diff changeset
218 // signature index required for moving up guards
2868b55001d4 Truffle-DSL: fixed specializationg grouping failed with guards using base types.
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parents: 11201
diff changeset
219 if (containsIndex(typeGuardsMatches, signatureIndex) || (first.getParent() != null && first.getParent().containsTypeGuardIndex(signatureIndex))) {
2868b55001d4 Truffle-DSL: fixed specializationg grouping failed with guards using base types.
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parents: 11201
diff changeset
220 continue;
2868b55001d4 Truffle-DSL: fixed specializationg grouping failed with guards using base types.
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parents: 11201
diff changeset
221 }
2868b55001d4 Truffle-DSL: fixed specializationg grouping failed with guards using base types.
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parents: 11201
diff changeset
222
2868b55001d4 Truffle-DSL: fixed specializationg grouping failed with guards using base types.
Christian Humer <christian.humer@gmail.com>
parents: 11201
diff changeset
223 iterator.remove();
2868b55001d4 Truffle-DSL: fixed specializationg grouping failed with guards using base types.
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parents: 11201
diff changeset
224 break;
2868b55001d4 Truffle-DSL: fixed specializationg grouping failed with guards using base types.
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parents: 11201
diff changeset
225 }
2868b55001d4 Truffle-DSL: fixed specializationg grouping failed with guards using base types.
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diff changeset
226 }
2868b55001d4 Truffle-DSL: fixed specializationg grouping failed with guards using base types.
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diff changeset
227
11195
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diff changeset
228 if (assumptionMatches.isEmpty() && typeGuardsMatches.isEmpty() && guardMatches.isEmpty()) {
4f52b08bd2f9 Truffle-DSL: Implemented specialization grouping for generic cases.
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parents:
diff changeset
229 return null;
4f52b08bd2f9 Truffle-DSL: Implemented specialization grouping for generic cases.
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parents:
diff changeset
230 }
4f52b08bd2f9 Truffle-DSL: Implemented specialization grouping for generic cases.
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parents:
diff changeset
231
4f52b08bd2f9 Truffle-DSL: Implemented specialization grouping for generic cases.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
232 for (SpecializationGroup group : groups) {
4f52b08bd2f9 Truffle-DSL: Implemented specialization grouping for generic cases.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
233 group.assumptions.removeAll(assumptionMatches);
11201
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diff changeset
234 group.typeGuards.removeAll(typeGuardsMatches);
11195
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diff changeset
235 group.guards.removeAll(guardMatches);
4f52b08bd2f9 Truffle-DSL: Implemented specialization grouping for generic cases.
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parents:
diff changeset
236 }
4f52b08bd2f9 Truffle-DSL: Implemented specialization grouping for generic cases.
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parents:
diff changeset
237
4f52b08bd2f9 Truffle-DSL: Implemented specialization grouping for generic cases.
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parents:
diff changeset
238 List<SpecializationGroup> newChildren = new ArrayList<>(groups);
4f52b08bd2f9 Truffle-DSL: Implemented specialization grouping for generic cases.
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parents:
diff changeset
239 return new SpecializationGroup(newChildren, assumptionMatches, typeGuardsMatches, guardMatches);
4f52b08bd2f9 Truffle-DSL: Implemented specialization grouping for generic cases.
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parents:
diff changeset
240 }
4f52b08bd2f9 Truffle-DSL: Implemented specialization grouping for generic cases.
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parents:
diff changeset
241
11442
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diff changeset
242 private boolean containsTypeGuardIndex(int index) {
2868b55001d4 Truffle-DSL: fixed specializationg grouping failed with guards using base types.
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diff changeset
243 if (containsIndex(typeGuards, index)) {
2868b55001d4 Truffle-DSL: fixed specializationg grouping failed with guards using base types.
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diff changeset
244 return true;
2868b55001d4 Truffle-DSL: fixed specializationg grouping failed with guards using base types.
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parents: 11201
diff changeset
245 }
2868b55001d4 Truffle-DSL: fixed specializationg grouping failed with guards using base types.
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parents: 11201
diff changeset
246 if (parent != null) {
2868b55001d4 Truffle-DSL: fixed specializationg grouping failed with guards using base types.
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diff changeset
247 return parent.containsTypeGuardIndex(index);
2868b55001d4 Truffle-DSL: fixed specializationg grouping failed with guards using base types.
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diff changeset
248 }
2868b55001d4 Truffle-DSL: fixed specializationg grouping failed with guards using base types.
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diff changeset
249 return false;
2868b55001d4 Truffle-DSL: fixed specializationg grouping failed with guards using base types.
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diff changeset
250 }
2868b55001d4 Truffle-DSL: fixed specializationg grouping failed with guards using base types.
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diff changeset
251
2868b55001d4 Truffle-DSL: fixed specializationg grouping failed with guards using base types.
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diff changeset
252 private static boolean containsIndex(List<TypeGuard> typeGuards, int signatureIndex) {
2868b55001d4 Truffle-DSL: fixed specializationg grouping failed with guards using base types.
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diff changeset
253 for (TypeGuard guard : typeGuards) {
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diff changeset
254 if (guard.signatureIndex == signatureIndex) {
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diff changeset
255 return true;
2868b55001d4 Truffle-DSL: fixed specializationg grouping failed with guards using base types.
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parents: 11201
diff changeset
256 }
2868b55001d4 Truffle-DSL: fixed specializationg grouping failed with guards using base types.
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parents: 11201
diff changeset
257 }
2868b55001d4 Truffle-DSL: fixed specializationg grouping failed with guards using base types.
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parents: 11201
diff changeset
258 return false;
2868b55001d4 Truffle-DSL: fixed specializationg grouping failed with guards using base types.
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parents: 11201
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259 }
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260
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261 public static SpecializationGroup create(List<SpecializationData> specializations) {
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262 List<SpecializationGroup> groups = new ArrayList<>();
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263 for (SpecializationData specialization : specializations) {
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264 groups.add(new SpecializationGroup(specialization));
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265 }
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266 return new SpecializationGroup(createCombinationalGroups(groups), Collections.<String> emptyList(), Collections.<TypeGuard> emptyList(), Collections.<GuardData> emptyList());
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267 }
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268
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269 @Override
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270 public String toString() {
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271 return "SpecializationGroup [assumptions=" + assumptions + ", typeGuards=" + typeGuards + ", guards=" + guards + "]";
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272 }
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273
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274 private static List<SpecializationGroup> createCombinationalGroups(List<SpecializationGroup> groups) {
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275 if (groups.size() <= 1) {
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276 return groups;
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277 }
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278 List<SpecializationGroup> newGroups = new ArrayList<>();
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279
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280 int i = 0;
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281 for (i = 0; i < groups.size();) {
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282 SpecializationGroup combined = null;
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283 for (int j = groups.size(); j > i + 1; j--) {
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284 combined = combine(groups.subList(i, j));
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285 if (combined != null) {
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286 break;
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287 }
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288 }
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289 SpecializationGroup newGroup;
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290 if (combined == null) {
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291 newGroup = groups.get(i);
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292 i++;
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293 } else {
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294 newGroup = combined;
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295 List<SpecializationGroup> originalGroups = new ArrayList<>(combined.children);
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296 combined.updateChildren(createCombinationalGroups(originalGroups));
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297 i += originalGroups.size();
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298 }
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299
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300 newGroups.add(newGroup);
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301
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302 }
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303
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304 return newGroups;
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305 }
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306
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307 public SpecializationGroup getPreviousGroup() {
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308 if (parent == null || parent.children.isEmpty()) {
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309 return null;
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310 }
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311 int index = parent.children.indexOf(this);
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312 if (index <= 0) {
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313 return null;
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314 }
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315 return parent.children.get(index - 1);
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316 }
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317
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318 public int getMaxSpecializationIndex() {
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319 if (specialization != null) {
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320 return specialization.getNode().getSpecializations().indexOf(specialization);
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321 } else {
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322 int max = Integer.MIN_VALUE;
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323 for (SpecializationGroup childGroup : getChildren()) {
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324 max = Math.max(max, childGroup.getMaxSpecializationIndex());
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325 }
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326 return max;
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327 }
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328 }
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329
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330 public static final class TypeGuard {
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331
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332 private final int signatureIndex;
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333 private final TypeData type;
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334
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335 public TypeGuard(TypeData type, int signatureIndex) {
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336 this.type = type;
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337 this.signatureIndex = signatureIndex;
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338 }
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339
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340 @Override
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341 public int hashCode() {
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342 final int prime = 31;
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343 int result = 1;
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344 result = prime * result + signatureIndex;
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345 result = prime * result + type.hashCode();
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346 return result;
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347 }
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348
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diff changeset
349 @Override
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350 public boolean equals(Object obj) {
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351 if (this == obj) {
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352 return true;
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353 } else if (obj == null) {
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354 return false;
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355 } else if (getClass() != obj.getClass()) {
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356 return false;
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diff changeset
357 }
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diff changeset
358
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diff changeset
359 TypeGuard other = (TypeGuard) obj;
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diff changeset
360 if (signatureIndex != other.signatureIndex) {
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diff changeset
361 return false;
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diff changeset
362 } else if (!type.equals(other.type)) {
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diff changeset
363 return false;
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diff changeset
364 }
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diff changeset
365 return true;
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diff changeset
366 }
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diff changeset
367
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diff changeset
368 public int getSignatureIndex() {
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diff changeset
369 return signatureIndex;
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diff changeset
370 }
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diff changeset
371
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diff changeset
372 public TypeData getType() {
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diff changeset
373 return type;
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diff changeset
374 }
7fc3e1fb3965 Truffle-DSL: specialization group fixes.
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parents: 11195
diff changeset
375 }
11195
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parents:
diff changeset
376 }