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annotate graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/UnsafeStoreNode.java @ 8481:92571f3eeeeb

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made VM independent method substitutions be interpretable
author Doug Simon <doug.simon@oracle.com>
date Tue, 26 Mar 2013 14:00:16 +0100
parents 2ffd472c5d25
children 435bb9425124
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1 /*
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2 * Copyright (c) 2011, 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.nodes.extended;
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24
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25 import static com.oracle.graal.graph.UnsafeAccess.*;
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26
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27 import com.oracle.graal.api.meta.*;
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28 import com.oracle.graal.graph.*;
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29 import com.oracle.graal.nodes.*;
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30 import com.oracle.graal.nodes.java.*;
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31 import com.oracle.graal.nodes.spi.*;
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32 import com.oracle.graal.nodes.type.*;
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34 /**
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35 * Store of a value at a location specified as an offset relative to an object. No null check is
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36 * performed before the store.
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37 */
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38 public class UnsafeStoreNode extends UnsafeAccessNode implements StateSplit, Lowerable, Virtualizable, Canonicalizable, MemoryCheckpoint {
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39
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40 @Input private ValueNode value;
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41 @Input(notDataflow = true) private FrameState stateAfter;
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42
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43 public UnsafeStoreNode(ValueNode object, int displacement, ValueNode offset, ValueNode value, Kind accessKind) {
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44 this(StampFactory.forVoid(), object, displacement, offset, value, accessKind);
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45 }
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46
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47 public UnsafeStoreNode(Stamp stamp, ValueNode object, int displacement, ValueNode offset, ValueNode value, Kind accessKind) {
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48 super(stamp, object, displacement, offset, accessKind);
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49 assert accessKind != Kind.Void && accessKind != Kind.Illegal;
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50 this.value = value;
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51 }
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52
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53 public FrameState stateAfter() {
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54 return stateAfter;
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55 }
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56
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57 public void setStateAfter(FrameState x) {
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58 assert x == null || x.isAlive() : "frame state must be in a graph";
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59 updateUsages(stateAfter, x);
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60 stateAfter = x;
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61 }
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62
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63 public boolean hasSideEffect() {
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64 return true;
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65 }
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66
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67 public ValueNode value() {
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68 return value;
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69 }
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70
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71 @Override
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72 public void lower(LoweringTool tool) {
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73 tool.getRuntime().lower(this, tool);
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74 }
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75
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76 @Override
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77 public Object[] getLocationIdentities() {
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78 return new Object[]{LocationNode.ANY_LOCATION};
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79 }
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80
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81 @Override
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82 public void virtualize(VirtualizerTool tool) {
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83 State state = tool.getObjectState(object());
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84 if (state != null && state.getState() == EscapeState.Virtual) {
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85 ValueNode indexValue = tool.getReplacedValue(offset());
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86 if (indexValue.isConstant()) {
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87 long offset = indexValue.asConstant().asLong() + displacement();
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88 int entryIndex = state.getVirtualObject().entryIndexForOffset(offset);
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89 if (entryIndex != -1 && state.getVirtualObject().entryKind(entryIndex) == accessKind()) {
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90 tool.setVirtualEntry(state, entryIndex, value());
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91 tool.delete();
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92 }
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93 }
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94 }
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95 }
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96
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97 @Override
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98 public ValueNode canonical(CanonicalizerTool tool) {
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99 if (offset().isConstant()) {
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100 long constantOffset = offset().asConstant().asLong();
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101 if (constantOffset != 0) {
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102 int intDisplacement = (int) (constantOffset + displacement());
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103 if (constantOffset == intDisplacement) {
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104 Graph graph = this.graph();
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105 return graph.add(new UnsafeStoreNode(this.stamp(), object(), intDisplacement, graph.unique(ConstantNode.forInt(0, graph)), value(), accessKind()));
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106 }
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107 } else if (object().stamp() instanceof ObjectStamp) { // TODO (gd) remove that once
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108 // UnsafeAccess only have an
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109 // object base
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110 ObjectStamp receiverStamp = object().objectStamp();
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111 if (receiverStamp.nonNull()) {
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112 ResolvedJavaType receiverType = receiverStamp.type();
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113 ResolvedJavaField field = receiverType.findInstanceFieldWithOffset(displacement());
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114 if (field != null) {
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115 return this.graph().add(new StoreFieldNode(object(), field, value()));
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116 }
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117 }
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118 }
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119 }
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120 return this;
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121 }
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122
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123 // specialized on value type until boxing/unboxing is sorted out in intrinsification
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124
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125 @SuppressWarnings("unused")
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126 @NodeIntrinsic
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127 public static void store(Object object, @ConstantNodeParameter int displacement, long offset, Object value, @ConstantNodeParameter Kind kind) {
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128 unsafe.putObject(object, offset + displacement, value);
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129 }
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130
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131 @SuppressWarnings("unused")
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132 @NodeIntrinsic
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133 public static void store(Object object, @ConstantNodeParameter int displacement, long offset, boolean value, @ConstantNodeParameter Kind kind) {
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134 unsafe.putBoolean(object, offset + displacement, value);
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135 }
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136
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137 @SuppressWarnings("unused")
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138 @NodeIntrinsic
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139 public static void store(Object object, @ConstantNodeParameter int displacement, long offset, byte value, @ConstantNodeParameter Kind kind) {
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140 unsafe.putByte(object, offset + displacement, value);
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141 }
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142
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143 @SuppressWarnings("unused")
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144 @NodeIntrinsic
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145 public static void store(Object object, @ConstantNodeParameter int displacement, long offset, char value, @ConstantNodeParameter Kind kind) {
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146 unsafe.putChar(object, offset + displacement, value);
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147 }
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148
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149 @SuppressWarnings("unused")
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150 @NodeIntrinsic
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151 public static void store(Object object, @ConstantNodeParameter int displacement, long offset, double value, @ConstantNodeParameter Kind kind) {
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152 unsafe.putDouble(object, offset + displacement, value);
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153 }
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154
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155 @SuppressWarnings("unused")
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156 @NodeIntrinsic
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157 public static void store(Object object, @ConstantNodeParameter int displacement, long offset, float value, @ConstantNodeParameter Kind kind) {
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158 unsafe.putFloat(object, offset + displacement, value);
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159 }
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160
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161 @SuppressWarnings("unused")
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162 @NodeIntrinsic
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163 public static void store(Object object, @ConstantNodeParameter int displacement, long offset, int value, @ConstantNodeParameter Kind kind) {
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164 unsafe.putInt(object, offset + displacement, value);
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165 }
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166
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167 @SuppressWarnings("unused")
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168 @NodeIntrinsic
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169 public static void store(Object object, @ConstantNodeParameter int displacement, long offset, long value, @ConstantNodeParameter Kind kind) {
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170 unsafe.putLong(object, offset + displacement, value);
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171 }
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172
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173 @SuppressWarnings("unused")
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174 @NodeIntrinsic
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175 public static void store(Object object, @ConstantNodeParameter int displacement, long offset, short value, @ConstantNodeParameter Kind kind) {
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176 unsafe.putShort(object, offset + displacement, value);
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177 }
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178 }