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annotate graal/com.oracle.graal.virtual/src/com/oracle/graal/virtual/phases/ea/VirtualizerToolImpl.java @ 15018:db4254246f9a

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Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
author Christian Wimmer <christian.wimmer@oracle.com>
date Mon, 07 Apr 2014 16:09:17 -0700
parents da2431cc1506
children 288c23143d47
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 /*
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2 * Copyright (c) 2011, 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.graal.virtual.phases.ea;
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24
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25 import static com.oracle.graal.phases.GraalOptions.*;
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26
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27 import java.util.*;
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28
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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.graph.*;
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32 import com.oracle.graal.nodes.*;
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33 import com.oracle.graal.nodes.calc.*;
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34 import com.oracle.graal.nodes.java.*;
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35 import com.oracle.graal.nodes.spi.Virtualizable.EscapeState;
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36 import com.oracle.graal.nodes.spi.Virtualizable.State;
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37 import com.oracle.graal.nodes.spi.*;
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38 import com.oracle.graal.nodes.virtual.*;
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39
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40 class VirtualizerToolImpl implements VirtualizerTool {
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41
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42 private final MetaAccessProvider metaAccess;
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43 private final ConstantReflectionProvider constantReflection;
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44 private final Assumptions assumptions;
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45 private final PartialEscapeClosure<?> closure;
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46
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47 VirtualizerToolImpl(MetaAccessProvider metaAccess, ConstantReflectionProvider constantReflection, Assumptions assumptions, PartialEscapeClosure<?> closure) {
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48 this.metaAccess = metaAccess;
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49 this.constantReflection = constantReflection;
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50 this.assumptions = assumptions;
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51 this.closure = closure;
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52 }
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53
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54 private boolean deleted;
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55 private PartialEscapeBlockState<?> state;
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56 private ValueNode current;
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57 private FixedNode position;
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58 private GraphEffectList effects;
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59
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60 @Override
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61 public MetaAccessProvider getMetaAccessProvider() {
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62 return metaAccess;
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63 }
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64
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65 public ConstantReflectionProvider getConstantReflectionProvider() {
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66 return constantReflection;
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67 }
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68
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69 @Override
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70 public Assumptions getAssumptions() {
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71 return assumptions;
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72 }
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73
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74 public void reset(PartialEscapeBlockState newState, ValueNode newCurrent, FixedNode newPosition, GraphEffectList newEffects) {
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75 deleted = false;
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76 state = newState;
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77 current = newCurrent;
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78 position = newPosition;
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79 effects = newEffects;
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80 }
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81
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82 public boolean isDeleted() {
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83 return deleted;
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84 }
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85
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86 @Override
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87 public State getObjectState(ValueNode value) {
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88 return closure.getObjectState(state, value);
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89 }
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90
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91 @Override
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92 public void setVirtualEntry(State objectState, int index, ValueNode value, boolean unsafe) {
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93 ObjectState obj = (ObjectState) objectState;
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94 assert obj != null && obj.isVirtual() : "not virtual: " + obj;
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95 ValueNode newValue;
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96 if (value == null) {
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97 newValue = null;
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98 } else {
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99 ObjectState valueState = closure.getObjectState(state, value);
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100 if (valueState == null) {
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101 newValue = getReplacedValue(value);
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102 assert unsafe || obj.getEntry(index) == null || obj.getEntry(index).getKind() == newValue.getKind() || (isObjectEntry(obj.getEntry(index)) && isObjectEntry(newValue));
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103 } else {
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104 if (valueState.getState() != EscapeState.Virtual) {
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105 newValue = valueState.getMaterializedValue();
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106 assert newValue.getKind() == Kind.Object;
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107 } else {
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108 newValue = valueState.getVirtualObject();
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109 }
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110 assert obj.getEntry(index) == null || isObjectEntry(obj.getEntry(index));
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111 }
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112 }
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113 obj.setEntry(index, newValue);
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114 }
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115
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116 private static boolean isObjectEntry(ValueNode value) {
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117 return value.getKind() == Kind.Object || value instanceof VirtualObjectNode;
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118 }
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119
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120 @Override
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121 public ValueNode getReplacedValue(ValueNode original) {
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122 return closure.getScalarAlias(original);
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123 }
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124
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125 @Override
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126 public void replaceWithVirtual(VirtualObjectNode virtual) {
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127 closure.addAndMarkAlias(virtual, current);
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128 if (current instanceof FixedWithNextNode) {
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129 effects.deleteFixedNode((FixedWithNextNode) current);
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130 }
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131 deleted = true;
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132 }
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133
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134 @Override
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135 public void replaceWithValue(ValueNode replacement) {
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136 effects.replaceAtUsages(current, closure.getScalarAlias(replacement));
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137 closure.addScalarAlias(current, replacement);
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138 deleted = true;
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139 }
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140
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141 @Override
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142 public void delete() {
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143 effects.deleteFixedNode((FixedWithNextNode) current);
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144 deleted = true;
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145 }
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146
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147 @Override
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148 public void replaceFirstInput(Node oldInput, Node replacement) {
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149 effects.replaceFirstInput(current, oldInput, replacement);
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150 }
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151
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152 @Override
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153 public void addNode(ValueNode node) {
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154 if (node instanceof FloatingNode) {
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155 effects.addFloatingNode(node, "VirtualizerTool");
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156 } else {
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157 effects.addFixedNodeBefore((FixedWithNextNode) node, position);
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158 }
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159 }
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160
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161 @Override
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162 public void createVirtualObject(VirtualObjectNode virtualObject, ValueNode[] entryState, List<MonitorIdNode> locks) {
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163 VirtualUtil.trace("{{%s}} ", current);
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164 if (!virtualObject.isAlive()) {
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165 effects.addFloatingNode(virtualObject, "newVirtualObject");
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166 }
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167 for (int i = 0; i < entryState.length; i++) {
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168 if (!(entryState[i] instanceof VirtualObjectNode)) {
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169 ObjectState v = closure.getObjectState(state, entryState[i]);
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170 if (v != null) {
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171 entryState[i] = v.isVirtual() ? v.getVirtualObject() : v.getMaterializedValue();
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172 } else {
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173 entryState[i] = closure.getScalarAlias(entryState[i]);
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174 }
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175 }
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176 }
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177 state.addObject(virtualObject, new ObjectState(virtualObject, entryState, EscapeState.Virtual, locks));
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178 closure.addAndMarkAlias(virtualObject, virtualObject);
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179 PartialEscapeClosure.METRIC_ALLOCATION_REMOVED.increment();
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180 }
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181
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182 @Override
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183 public int getMaximumEntryCount() {
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184 return MaximumEscapeAnalysisArrayLength.getValue();
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185 }
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186
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187 @Override
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188 public void replaceWith(ValueNode node) {
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189 State resultState = getObjectState(node);
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190 if (resultState == null) {
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191 replaceWithValue(node);
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192 } else {
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193 if (resultState.getState() == EscapeState.Virtual) {
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194 replaceWithVirtual(resultState.getVirtualObject());
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195 } else {
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196 replaceWithValue(resultState.getMaterializedValue());
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197 }
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198 }
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199 }
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200 }