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annotate graal/com.oracle.graal.phases.common/src/com/oracle/graal/phases/common/inlining/info/MultiTypeGuardInlineInfo.java @ 15798:8c5bcddb4320

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[inlining-6] moved Inlineable to dedicated package for inlineable elements
author Miguel Garcia <miguel.m.garcia@oracle.com>
date Tue, 20 May 2014 12:04:10 +0200
parents ef6b8d1898e6
children ebe257551ffd
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1 /*
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2 * Copyright (c) 2013, 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.graal.phases.common.inlining.info;
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24
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25 import static com.oracle.graal.compiler.common.GraalOptions.*;
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26
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27 import java.util.*;
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29 import com.oracle.graal.api.code.*;
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30 import com.oracle.graal.api.meta.*;
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31 import com.oracle.graal.api.meta.JavaTypeProfile.ProfiledType;
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32 import com.oracle.graal.compiler.common.calc.*;
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33 import com.oracle.graal.compiler.common.type.*;
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34 import com.oracle.graal.debug.*;
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35 import com.oracle.graal.graph.*;
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36 import com.oracle.graal.nodes.*;
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37 import com.oracle.graal.nodes.calc.*;
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38 import com.oracle.graal.nodes.extended.*;
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39 import com.oracle.graal.nodes.java.*;
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40 import com.oracle.graal.nodes.java.MethodCallTargetNode.InvokeKind;
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41 import com.oracle.graal.nodes.util.*;
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42 import com.oracle.graal.phases.common.*;
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43 import com.oracle.graal.phases.common.inlining.*;
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44 import com.oracle.graal.phases.common.inlining.info.elem.Inlineable;
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45 import com.oracle.graal.phases.tiers.*;
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46 import com.oracle.graal.phases.util.*;
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47
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48 /**
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49 * Polymorphic inlining of m methods with n type checks (n &ge; m) in case that the profiling
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50 * information suggests a reasonable amount of different receiver types and different methods. If an
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51 * unknown type is encountered a deoptimization is triggered.
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52 */
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53 public class MultiTypeGuardInlineInfo extends AbstractInlineInfo {
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54
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55 private static final DebugMetric metricInliningTailDuplication = Debug.metric("InliningTailDuplication");
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56
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57 private final List<ResolvedJavaMethod> concretes;
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58 private final double[] methodProbabilities;
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59 private final double maximumMethodProbability;
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60 private final ArrayList<Integer> typesToConcretes;
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61 private final ArrayList<ProfiledType> ptypes;
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62 private final ArrayList<Double> concretesProbabilities;
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63 private final double notRecordedTypeProbability;
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64 private final Inlineable[] inlineableElements;
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65
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66 public MultiTypeGuardInlineInfo(Invoke invoke, ArrayList<ResolvedJavaMethod> concretes, ArrayList<Double> concretesProbabilities, ArrayList<ProfiledType> ptypes,
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67 ArrayList<Integer> typesToConcretes, double notRecordedTypeProbability) {
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68 super(invoke);
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69 assert concretes.size() > 0 : "must have at least one method";
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70 assert ptypes.size() == typesToConcretes.size() : "array lengths must match";
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71
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72 this.concretesProbabilities = concretesProbabilities;
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73 this.concretes = concretes;
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74 this.ptypes = ptypes;
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75 this.typesToConcretes = typesToConcretes;
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76 this.notRecordedTypeProbability = notRecordedTypeProbability;
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77 this.inlineableElements = new Inlineable[concretes.size()];
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78 this.methodProbabilities = computeMethodProbabilities();
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79 this.maximumMethodProbability = maximumMethodProbability();
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80 assert maximumMethodProbability > 0;
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81 }
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82
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83 private double[] computeMethodProbabilities() {
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84 double[] result = new double[concretes.size()];
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85 for (int i = 0; i < typesToConcretes.size(); i++) {
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86 int concrete = typesToConcretes.get(i);
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87 double probability = ptypes.get(i).getProbability();
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88 result[concrete] += probability;
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89 }
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90 return result;
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91 }
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92
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93 private double maximumMethodProbability() {
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94 double max = 0;
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95 for (int i = 0; i < methodProbabilities.length; i++) {
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96 max = Math.max(max, methodProbabilities[i]);
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97 }
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98 return max;
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99 }
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100
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101 @Override
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102 public int numberOfMethods() {
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103 return concretes.size();
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104 }
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105
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106 @Override
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107 public ResolvedJavaMethod methodAt(int index) {
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108 assert index >= 0 && index < concretes.size();
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109 return concretes.get(index);
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110 }
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111
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112 @Override
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113 public Inlineable inlineableElementAt(int index) {
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114 assert index >= 0 && index < concretes.size();
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115 return inlineableElements[index];
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116 }
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117
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118 @Override
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119 public double probabilityAt(int index) {
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120 return methodProbabilities[index];
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121 }
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122
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123 @Override
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124 public double relevanceAt(int index) {
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125 return probabilityAt(index) / maximumMethodProbability;
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126 }
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127
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128 @Override
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129 public void setInlinableElement(int index, Inlineable inlineableElement) {
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130 assert index >= 0 && index < concretes.size();
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131 inlineableElements[index] = inlineableElement;
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132 }
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133
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134 @Override
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135 public void inline(Providers providers, Assumptions assumptions) {
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136 if (hasSingleMethod()) {
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137 inlineSingleMethod(graph(), providers.getMetaAccess(), assumptions);
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138 } else {
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139 inlineMultipleMethods(graph(), providers, assumptions);
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140 }
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141 }
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142
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143 public boolean shouldInline() {
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144 for (ResolvedJavaMethod method : concretes) {
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145 if (method.shouldBeInlined()) {
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146 return true;
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147 }
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148 }
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149 return false;
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150 }
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151
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152 private boolean hasSingleMethod() {
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153 return concretes.size() == 1 && !shouldFallbackToInvoke();
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154 }
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155
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156 private boolean shouldFallbackToInvoke() {
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157 return notRecordedTypeProbability > 0;
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158 }
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159
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160 private void inlineMultipleMethods(StructuredGraph graph, Providers providers, Assumptions assumptions) {
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161 int numberOfMethods = concretes.size();
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162 FixedNode continuation = invoke.next();
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163
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164 ValueNode originalReceiver = ((MethodCallTargetNode) invoke.callTarget()).receiver();
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165 // setup merge and phi nodes for results and exceptions
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166 MergeNode returnMerge = graph.add(new MergeNode());
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167 returnMerge.setStateAfter(invoke.stateAfter());
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168
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169 PhiNode returnValuePhi = null;
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170 if (invoke.asNode().getKind() != Kind.Void) {
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171 returnValuePhi = graph.addWithoutUnique(new ValuePhiNode(invoke.asNode().stamp().unrestricted(), returnMerge));
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172 }
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173
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174 MergeNode exceptionMerge = null;
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175 PhiNode exceptionObjectPhi = null;
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176 if (invoke instanceof InvokeWithExceptionNode) {
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177 InvokeWithExceptionNode invokeWithException = (InvokeWithExceptionNode) invoke;
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178 ExceptionObjectNode exceptionEdge = (ExceptionObjectNode) invokeWithException.exceptionEdge();
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179
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180 exceptionMerge = graph.add(new MergeNode());
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181
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182 FixedNode exceptionSux = exceptionEdge.next();
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183 graph.addBeforeFixed(exceptionSux, exceptionMerge);
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184 exceptionObjectPhi = graph.addWithoutUnique(new ValuePhiNode(StampFactory.forKind(Kind.Object), exceptionMerge));
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185 exceptionMerge.setStateAfter(exceptionEdge.stateAfter().duplicateModified(invoke.stateAfter().bci, true, Kind.Object, exceptionObjectPhi));
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186 }
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187
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188 // create one separate block for each invoked method
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189 BeginNode[] successors = new BeginNode[numberOfMethods + 1];
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190 for (int i = 0; i < numberOfMethods; i++) {
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191 successors[i] = createInvocationBlock(graph, invoke, returnMerge, returnValuePhi, exceptionMerge, exceptionObjectPhi, true);
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192 }
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193
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194 // create the successor for an unknown type
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195 FixedNode unknownTypeSux;
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196 if (shouldFallbackToInvoke()) {
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197 unknownTypeSux = createInvocationBlock(graph, invoke, returnMerge, returnValuePhi, exceptionMerge, exceptionObjectPhi, false);
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198 } else {
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199 unknownTypeSux = graph.add(new DeoptimizeNode(DeoptimizationAction.InvalidateReprofile, DeoptimizationReason.TypeCheckedInliningViolated));
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200 }
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201 successors[successors.length - 1] = BeginNode.begin(unknownTypeSux);
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202
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203 // replace the invoke exception edge
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204 if (invoke instanceof InvokeWithExceptionNode) {
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205 InvokeWithExceptionNode invokeWithExceptionNode = (InvokeWithExceptionNode) invoke;
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206 ExceptionObjectNode exceptionEdge = (ExceptionObjectNode) invokeWithExceptionNode.exceptionEdge();
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207 exceptionEdge.replaceAtUsages(exceptionObjectPhi);
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208 exceptionEdge.setNext(null);
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209 GraphUtil.killCFG(invokeWithExceptionNode.exceptionEdge());
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210 }
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211
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212 assert invoke.asNode().isAlive();
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213
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214 // replace the invoke with a switch on the type of the actual receiver
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215 boolean methodDispatch = createDispatchOnTypeBeforeInvoke(graph, successors, false, providers.getMetaAccess());
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216
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217 assert invoke.next() == continuation;
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218 invoke.setNext(null);
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219 returnMerge.setNext(continuation);
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diff changeset
220 invoke.asNode().replaceAtUsages(returnValuePhi);
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diff changeset
221 invoke.asNode().replaceAndDelete(null);
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222
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223 ArrayList<GuardedValueNode> replacementNodes = new ArrayList<>();
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224
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225 // do the actual inlining for every invoke
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226 for (int i = 0; i < numberOfMethods; i++) {
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227 BeginNode node = successors[i];
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228 Invoke invokeForInlining = (Invoke) node.next();
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229
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230 ResolvedJavaType commonType;
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231 if (methodDispatch) {
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232 commonType = concretes.get(i).getDeclaringClass();
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233 } else {
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234 commonType = getLeastCommonType(i);
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235 }
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236
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237 ValueNode receiver = ((MethodCallTargetNode) invokeForInlining.callTarget()).receiver();
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238 boolean exact = (getTypeCount(i) == 1 && !methodDispatch);
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239 GuardedValueNode anchoredReceiver = InliningUtil.createAnchoredReceiver(graph, node, commonType, receiver, exact);
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diff changeset
240 invokeForInlining.callTarget().replaceFirstInput(receiver, anchoredReceiver);
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241
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242 inline(invokeForInlining, methodAt(i), inlineableElementAt(i), assumptions, false);
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243
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244 replacementNodes.add(anchoredReceiver);
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245 }
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246 if (shouldFallbackToInvoke()) {
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247 replacementNodes.add(null);
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248 }
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249
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250 if (OptTailDuplication.getValue()) {
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251 /*
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252 * We might want to perform tail duplication at the merge after a type switch, if there
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253 * are invokes that would benefit from the improvement in type information.
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254 */
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255 FixedNode current = returnMerge;
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256 int opportunities = 0;
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257 do {
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258 if (current instanceof InvokeNode && ((InvokeNode) current).callTarget() instanceof MethodCallTargetNode &&
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259 ((MethodCallTargetNode) ((InvokeNode) current).callTarget()).receiver() == originalReceiver) {
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260 opportunities++;
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261 } else if (current.inputs().contains(originalReceiver)) {
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262 opportunities++;
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263 }
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264 current = ((FixedWithNextNode) current).next();
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265 } while (current instanceof FixedWithNextNode);
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266
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267 if (opportunities > 0) {
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268 metricInliningTailDuplication.increment();
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269 Debug.log("MultiTypeGuardInlineInfo starting tail duplication (%d opportunities)", opportunities);
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270 PhaseContext phaseContext = new PhaseContext(providers, assumptions);
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271 CanonicalizerPhase canonicalizer = new CanonicalizerPhase(!ImmutableCode.getValue());
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272 TailDuplicationPhase.tailDuplicate(returnMerge, TailDuplicationPhase.TRUE_DECISION, replacementNodes, phaseContext, canonicalizer);
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273 }
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274 }
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275 }
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276
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277 private int getTypeCount(int concreteMethodIndex) {
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278 int count = 0;
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279 for (int i = 0; i < typesToConcretes.size(); i++) {
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280 if (typesToConcretes.get(i) == concreteMethodIndex) {
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281 count++;
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282 }
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283 }
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284 return count;
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285 }
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286
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287 private ResolvedJavaType getLeastCommonType(int concreteMethodIndex) {
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288 ResolvedJavaType commonType = null;
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289 for (int i = 0; i < typesToConcretes.size(); i++) {
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290 if (typesToConcretes.get(i) == concreteMethodIndex) {
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291 if (commonType == null) {
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292 commonType = ptypes.get(i).getType();
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293 } else {
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294 commonType = commonType.findLeastCommonAncestor(ptypes.get(i).getType());
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295 }
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296 }
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297 }
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298 assert commonType != null;
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299 return commonType;
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300 }
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301
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302 private ResolvedJavaType getLeastCommonType() {
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diff changeset
303 ResolvedJavaType result = getLeastCommonType(0);
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diff changeset
304 for (int i = 1; i < concretes.size(); i++) {
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diff changeset
305 result = result.findLeastCommonAncestor(getLeastCommonType(i));
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diff changeset
306 }
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diff changeset
307 return result;
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diff changeset
308 }
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diff changeset
309
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diff changeset
310 private void inlineSingleMethod(StructuredGraph graph, MetaAccessProvider metaAccess, Assumptions assumptions) {
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diff changeset
311 assert concretes.size() == 1 && inlineableElements.length == 1 && ptypes.size() > 1 && !shouldFallbackToInvoke() && notRecordedTypeProbability == 0;
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diff changeset
312
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diff changeset
313 BeginNode calleeEntryNode = graph.add(new BeginNode());
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diff changeset
314
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diff changeset
315 BeginNode unknownTypeSux = createUnknownTypeSuccessor(graph);
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diff changeset
316 BeginNode[] successors = new BeginNode[]{calleeEntryNode, unknownTypeSux};
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diff changeset
317 createDispatchOnTypeBeforeInvoke(graph, successors, false, metaAccess);
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diff changeset
318
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diff changeset
319 calleeEntryNode.setNext(invoke.asNode());
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diff changeset
320
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diff changeset
321 inline(invoke, methodAt(0), inlineableElementAt(0), assumptions, false);
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diff changeset
322 }
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diff changeset
323
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
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diff changeset
324 private boolean createDispatchOnTypeBeforeInvoke(StructuredGraph graph, BeginNode[] successors, boolean invokeIsOnlySuccessor, MetaAccessProvider metaAccess) {
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diff changeset
325 assert ptypes.size() >= 1;
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diff changeset
326 ValueNode nonNullReceiver = InliningUtil.nonNullReceiver(invoke);
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
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diff changeset
327 Kind hubKind = ((MethodCallTargetNode) invoke.callTarget()).targetMethod().getDeclaringClass().getEncoding(ResolvedJavaType.Representation.ObjectHub).getKind();
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diff changeset
328 LoadHubNode hub = graph.unique(new LoadHubNode(nonNullReceiver, hubKind));
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diff changeset
329
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
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parents:
diff changeset
330 if (!invokeIsOnlySuccessor && chooseMethodDispatch()) {
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parents:
diff changeset
331 assert successors.length == concretes.size() + 1;
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parents:
diff changeset
332 assert concretes.size() > 0;
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parents:
diff changeset
333 Debug.log("Method check cascade with %d methods", concretes.size());
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
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diff changeset
334
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diff changeset
335 ValueNode[] constantMethods = new ValueNode[concretes.size()];
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diff changeset
336 double[] probability = new double[concretes.size()];
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parents:
diff changeset
337 for (int i = 0; i < concretes.size(); ++i) {
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parents:
diff changeset
338 ResolvedJavaMethod firstMethod = concretes.get(i);
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parents:
diff changeset
339 Constant firstMethodConstant = firstMethod.getEncoding();
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parents:
diff changeset
340
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diff changeset
341 ValueNode firstMethodConstantNode = ConstantNode.forConstant(firstMethodConstant, metaAccess, graph);
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diff changeset
342 constantMethods[i] = firstMethodConstantNode;
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parents:
diff changeset
343 double concretesProbability = concretesProbabilities.get(i);
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parents:
diff changeset
344 assert concretesProbability >= 0.0;
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parents:
diff changeset
345 probability[i] = concretesProbability;
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
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parents:
diff changeset
346 if (i > 0) {
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parents:
diff changeset
347 double prevProbability = probability[i - 1];
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parents:
diff changeset
348 if (prevProbability == 1.0) {
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diff changeset
349 probability[i] = 1.0;
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
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parents:
diff changeset
350 } else {
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diff changeset
351 probability[i] = Math.min(1.0, Math.max(0.0, probability[i] / (1.0 - prevProbability)));
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diff changeset
352 }
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
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diff changeset
353 }
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
354 }
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
355
15725
ef6b8d1898e6 Add resolved receiver type to ResolvedJavaMethod.isInVirtualMethodTable in order to be able to do vtable-calls for miranda and default methods
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 15722
diff changeset
356 ResolvedJavaType receiverType = invoke.getReceiverType();
15644
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
357 FixedNode lastSucc = successors[concretes.size()];
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
358 for (int i = concretes.size() - 1; i >= 0; --i) {
15725
ef6b8d1898e6 Add resolved receiver type to ResolvedJavaMethod.isInVirtualMethodTable in order to be able to do vtable-calls for miranda and default methods
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 15722
diff changeset
359 LoadMethodNode method = graph.add(new LoadMethodNode(concretes.get(i), receiverType, hub, constantMethods[i].getKind()));
15644
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
360 CompareNode methodCheck = CompareNode.createCompareNode(graph, Condition.EQ, method, constantMethods[i]);
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
361 IfNode ifNode = graph.add(new IfNode(methodCheck, successors[i], lastSucc, probability[i]));
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
362 method.setNext(ifNode);
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
363 lastSucc = method;
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
364 }
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
365
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
366 FixedWithNextNode pred = (FixedWithNextNode) invoke.asNode().predecessor();
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
367 pred.setNext(lastSucc);
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
368 return true;
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
369 } else {
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
370 Debug.log("Type switch with %d types", concretes.size());
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
371 }
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
372
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
373 ResolvedJavaType[] keys = new ResolvedJavaType[ptypes.size()];
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
374 double[] keyProbabilities = new double[ptypes.size() + 1];
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
375 int[] keySuccessors = new int[ptypes.size() + 1];
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
376 for (int i = 0; i < ptypes.size(); i++) {
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
377 keys[i] = ptypes.get(i).getType();
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
378 keyProbabilities[i] = ptypes.get(i).getProbability();
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
379 keySuccessors[i] = invokeIsOnlySuccessor ? 0 : typesToConcretes.get(i);
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
380 assert keySuccessors[i] < successors.length - 1 : "last successor is the unknownTypeSux";
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
381 }
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
382 keyProbabilities[keyProbabilities.length - 1] = notRecordedTypeProbability;
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
383 keySuccessors[keySuccessors.length - 1] = successors.length - 1;
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
384
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
385 TypeSwitchNode typeSwitch = graph.add(new TypeSwitchNode(hub, successors, keys, keyProbabilities, keySuccessors));
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
386 FixedWithNextNode pred = (FixedWithNextNode) invoke.asNode().predecessor();
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
387 pred.setNext(typeSwitch);
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
388 return false;
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
389 }
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
390
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
391 private boolean chooseMethodDispatch() {
15725
ef6b8d1898e6 Add resolved receiver type to ResolvedJavaMethod.isInVirtualMethodTable in order to be able to do vtable-calls for miranda and default methods
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 15722
diff changeset
392 ResolvedJavaType receiverType = invoke.getReceiverType();
15644
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
393 for (ResolvedJavaMethod concrete : concretes) {
15725
ef6b8d1898e6 Add resolved receiver type to ResolvedJavaMethod.isInVirtualMethodTable in order to be able to do vtable-calls for miranda and default methods
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 15722
diff changeset
394 if (!concrete.isInVirtualMethodTable(receiverType)) {
15644
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
395 return false;
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
396 }
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
397 }
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
398
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
399 if (concretes.size() == 1 && this.notRecordedTypeProbability > 0) {
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
400 // Always chose method dispatch if there is a single concrete method and the call
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
401 // site is megamorphic.
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
402 return true;
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
403 }
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
404
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
405 if (concretes.size() == ptypes.size()) {
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
406 // Always prefer types over methods if the number of types is smaller than the
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
407 // number of methods.
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
408 return false;
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
409 }
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
410
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
411 return chooseMethodDispatchCostBased();
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
412 }
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
413
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
414 private boolean chooseMethodDispatchCostBased() {
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
415 double remainder = 1.0 - this.notRecordedTypeProbability;
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
416 double costEstimateMethodDispatch = remainder;
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
417 for (int i = 0; i < concretes.size(); ++i) {
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
418 if (i != 0) {
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
419 costEstimateMethodDispatch += remainder;
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
420 }
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
421 remainder -= concretesProbabilities.get(i);
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
422 }
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
423
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
424 double costEstimateTypeDispatch = 0.0;
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
425 remainder = 1.0;
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
426 for (int i = 0; i < ptypes.size(); ++i) {
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
427 if (i != 0) {
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
428 costEstimateTypeDispatch += remainder;
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
429 }
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
430 remainder -= ptypes.get(i).getProbability();
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
431 }
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
432 costEstimateTypeDispatch += notRecordedTypeProbability;
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
433 return costEstimateMethodDispatch < costEstimateTypeDispatch;
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
434 }
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
435
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
436 private static BeginNode createInvocationBlock(StructuredGraph graph, Invoke invoke, MergeNode returnMerge, PhiNode returnValuePhi, MergeNode exceptionMerge, PhiNode exceptionObjectPhi,
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
437 boolean useForInlining) {
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
438 Invoke duplicatedInvoke = duplicateInvokeForInlining(graph, invoke, exceptionMerge, exceptionObjectPhi, useForInlining);
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
439 BeginNode calleeEntryNode = graph.add(new BeginNode());
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
440 calleeEntryNode.setNext(duplicatedInvoke.asNode());
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
441
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
442 AbstractEndNode endNode = graph.add(new EndNode());
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
443 duplicatedInvoke.setNext(endNode);
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
444 returnMerge.addForwardEnd(endNode);
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
445
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
446 if (returnValuePhi != null) {
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
447 returnValuePhi.addInput(duplicatedInvoke.asNode());
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
448 }
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
449 return calleeEntryNode;
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
450 }
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
451
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
452 private static Invoke duplicateInvokeForInlining(StructuredGraph graph, Invoke invoke, MergeNode exceptionMerge, PhiNode exceptionObjectPhi, boolean useForInlining) {
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
453 Invoke result = (Invoke) invoke.asNode().copyWithInputs();
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
454 Node callTarget = result.callTarget().copyWithInputs();
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
455 result.asNode().replaceFirstInput(result.callTarget(), callTarget);
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
456 result.setUseForInlining(useForInlining);
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
457
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
458 Kind kind = invoke.asNode().getKind();
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
459 if (kind != Kind.Void) {
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
460 FrameState stateAfter = invoke.stateAfter();
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
461 stateAfter = stateAfter.duplicate(stateAfter.bci);
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
462 stateAfter.replaceFirstInput(invoke.asNode(), result.asNode());
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
463 result.setStateAfter(stateAfter);
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
464 }
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
465
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
466 if (invoke instanceof InvokeWithExceptionNode) {
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
467 assert exceptionMerge != null && exceptionObjectPhi != null;
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
468
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
469 InvokeWithExceptionNode invokeWithException = (InvokeWithExceptionNode) invoke;
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
470 ExceptionObjectNode exceptionEdge = (ExceptionObjectNode) invokeWithException.exceptionEdge();
cd436bc5d63a [inlining] moving InlineInfo and subclasses to package inlining.info
Miguel Garcia <miguel.m.garcia@oracle.com>
parents:
diff changeset
471 FrameState stateAfterException = exceptionEdge.stateAfter();
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472
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473 ExceptionObjectNode newExceptionEdge = (ExceptionObjectNode) exceptionEdge.copyWithInputs();
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474 // set new state (pop old exception object, push new one)
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475 newExceptionEdge.setStateAfter(stateAfterException.duplicateModified(stateAfterException.bci, stateAfterException.rethrowException(), Kind.Object, newExceptionEdge));
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476
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477 AbstractEndNode endNode = graph.add(new EndNode());
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478 newExceptionEdge.setNext(endNode);
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479 exceptionMerge.addForwardEnd(endNode);
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480 exceptionObjectPhi.addInput(newExceptionEdge);
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481
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482 ((InvokeWithExceptionNode) result).setExceptionEdge(newExceptionEdge);
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483 }
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484 return result;
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485 }
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486
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487 @Override
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488 public void tryToDevirtualizeInvoke(MetaAccessProvider metaAccess, Assumptions assumptions) {
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489 if (hasSingleMethod()) {
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490 devirtualizeWithTypeSwitch(graph(), InvokeKind.Special, concretes.get(0), metaAccess);
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491 } else {
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492 tryToDevirtualizeMultipleMethods(graph(), metaAccess);
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493 }
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494 }
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495
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496 private void tryToDevirtualizeMultipleMethods(StructuredGraph graph, MetaAccessProvider metaAccess) {
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497 MethodCallTargetNode methodCallTarget = (MethodCallTargetNode) invoke.callTarget();
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498 if (methodCallTarget.invokeKind() == InvokeKind.Interface) {
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499 ResolvedJavaMethod targetMethod = methodCallTarget.targetMethod();
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500 ResolvedJavaType leastCommonType = getLeastCommonType();
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c583759bbcfd ResolvedJavaType.resolveMethod now takes a callerType that is used to check access rules. Make it work for default methods.
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501 ResolvedJavaType contextType = invoke.getContextType();
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502 // check if we have a common base type that implements the interface -> in that case
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503 // we have a vtable entry for the interface method and can use a less expensive
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504 // virtual call
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505 if (!leastCommonType.isInterface() && targetMethod.getDeclaringClass().isAssignableFrom(leastCommonType)) {
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506 ResolvedJavaMethod baseClassTargetMethod = leastCommonType.resolveMethod(targetMethod, contextType);
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507 if (baseClassTargetMethod != null) {
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508 devirtualizeWithTypeSwitch(graph, InvokeKind.Virtual, leastCommonType.resolveMethod(targetMethod, contextType), metaAccess);
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509 }
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510 }
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511 }
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512 }
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513
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514 private void devirtualizeWithTypeSwitch(StructuredGraph graph, InvokeKind kind, ResolvedJavaMethod target, MetaAccessProvider metaAccess) {
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515 BeginNode invocationEntry = graph.add(new BeginNode());
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516 BeginNode unknownTypeSux = createUnknownTypeSuccessor(graph);
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517 BeginNode[] successors = new BeginNode[]{invocationEntry, unknownTypeSux};
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518 createDispatchOnTypeBeforeInvoke(graph, successors, true, metaAccess);
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519
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520 invocationEntry.setNext(invoke.asNode());
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521 ValueNode receiver = ((MethodCallTargetNode) invoke.callTarget()).receiver();
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522 GuardedValueNode anchoredReceiver = InliningUtil.createAnchoredReceiver(graph, invocationEntry, target.getDeclaringClass(), receiver, false);
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523 invoke.callTarget().replaceFirstInput(receiver, anchoredReceiver);
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524 InliningUtil.replaceInvokeCallTarget(invoke, graph, kind, target);
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525 }
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526
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527 private static BeginNode createUnknownTypeSuccessor(StructuredGraph graph) {
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528 return BeginNode.begin(graph.add(new DeoptimizeNode(DeoptimizationAction.InvalidateReprofile, DeoptimizationReason.TypeCheckedInliningViolated)));
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529 }
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530
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531 @Override
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532 public String toString() {
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533 StringBuilder builder = new StringBuilder(shouldFallbackToInvoke() ? "megamorphic" : "polymorphic");
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534 builder.append(", ");
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535 builder.append(concretes.size());
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diff changeset
536 builder.append(" methods [ ");
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diff changeset
537 for (int i = 0; i < concretes.size(); i++) {
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diff changeset
538 builder.append(MetaUtil.format(" %H.%n(%p):%r", concretes.get(i)));
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539 }
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diff changeset
540 builder.append(" ], ");
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diff changeset
541 builder.append(ptypes.size());
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diff changeset
542 builder.append(" type checks [ ");
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diff changeset
543 for (int i = 0; i < ptypes.size(); i++) {
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diff changeset
544 builder.append(" ");
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diff changeset
545 builder.append(ptypes.get(i).getType().getName());
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diff changeset
546 builder.append(ptypes.get(i).getProbability());
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diff changeset
547 }
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diff changeset
548 builder.append(" ]");
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parents:
diff changeset
549 return builder.toString();
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diff changeset
550 }
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551 }