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annotate graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/UnsafeStoreNode.java @ 18950:3fc907b46313

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[SPARC] Fix Partial Escape Analysis for SPARC in Truffle
author Stefan Anzinger <stefan.anzinger@oracle.com>
date Mon, 26 Jan 2015 21:21:06 +0100
parents 9f85ac52d521
children 05a56a6d0886
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1 /*
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2 * Copyright (c) 2011, 2014, 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.compiler.common.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.compiler.common.type.*;
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29 import com.oracle.graal.nodeinfo.*;
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30 import com.oracle.graal.nodes.*;
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31 import com.oracle.graal.nodes.java.*;
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32 import com.oracle.graal.nodes.spi.*;
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33
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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 @NodeInfo
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39 public class UnsafeStoreNode extends UnsafeAccessNode implements StateSplit, Lowerable, Virtualizable, MemoryCheckpoint.Single {
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40
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41 @Input ValueNode value;
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42 @OptionalInput(InputType.State) FrameState stateAfter;
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43
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44 public UnsafeStoreNode(ValueNode object, ValueNode offset, ValueNode value, Kind accessKind, LocationIdentity locationIdentity) {
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45 this(object, offset, value, accessKind, locationIdentity, null);
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46 }
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47
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48 public UnsafeStoreNode(ValueNode object, ValueNode offset, ValueNode value, Kind accessKind, LocationIdentity locationIdentity, FrameState stateAfter) {
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49 super(StampFactory.forVoid(), object, offset, accessKind, locationIdentity);
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50 this.value = value;
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51 this.stateAfter = stateAfter;
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52 assert accessKind != Kind.Void && accessKind != Kind.Illegal;
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53 }
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54
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55 public FrameState stateAfter() {
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56 return stateAfter;
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57 }
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58
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59 public void setStateAfter(FrameState x) {
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60 assert x == null || x.isAlive() : "frame state must be in a graph";
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61 updateUsages(stateAfter, x);
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62 stateAfter = x;
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63 }
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64
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65 public boolean hasSideEffect() {
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66 return true;
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67 }
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68
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69 public ValueNode value() {
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70 return value;
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71 }
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72
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73 @Override
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74 public void lower(LoweringTool tool) {
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75 tool.getLowerer().lower(this, tool);
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76 }
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77
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78 @Override
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79 public void virtualize(VirtualizerTool tool) {
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80 State state = tool.getObjectState(object());
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81 if (state != null && state.getState() == EscapeState.Virtual) {
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82 ValueNode indexValue = tool.getReplacedValue(offset());
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83 if (indexValue.isConstant()) {
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84 long off = indexValue.asJavaConstant().asLong();
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85 int entryIndex = state.getVirtualObject().entryIndexForOffset(off);
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86 if (entryIndex != -1) {
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87 Kind entryKind = state.getVirtualObject().entryKind(entryIndex);
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88 ValueNode entry = state.getEntry(entryIndex);
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89 boolean isLoadSafe = ByteOrder.nativeOrder() == ByteOrder.LITTLE_ENDIAN || accessKind() == entryKind;
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90 if (isLoadSafe) {
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91 if (entry.getKind() == value.getKind() || entryKind == accessKind()) {
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92 tool.setVirtualEntry(state, entryIndex, value(), true);
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93 tool.delete();
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94 } else {
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95 if ((accessKind() == Kind.Long || accessKind() == Kind.Double) && entryKind == Kind.Int) {
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96 int nextIndex = state.getVirtualObject().entryIndexForOffset(off + 4);
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97 if (nextIndex != -1) {
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98 Kind nextKind = state.getVirtualObject().entryKind(nextIndex);
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99 if (nextKind == Kind.Int) {
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100 tool.setVirtualEntry(state, entryIndex, value(), true);
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101 tool.setVirtualEntry(state, nextIndex, ConstantNode.forConstant(JavaConstant.forIllegal(), tool.getMetaAccessProvider(), graph()), true);
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102 tool.delete();
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103 }
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104 }
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105 }
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106 }
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107 }
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108 }
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109 }
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110 }
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111 }
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112
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113 @Override
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114 protected ValueNode cloneAsFieldAccess(ResolvedJavaField field) {
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115 return new StoreFieldNode(object(), field, value(), stateAfter());
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116 }
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117
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118 @Override
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119 protected ValueNode cloneAsArrayAccess(ValueNode location, LocationIdentity identity) {
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120 return new UnsafeStoreNode(object(), location, value, accessKind(), identity, stateAfter());
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121 }
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122
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123 public FrameState getState() {
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124 return stateAfter;
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125 }
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126
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127 // specialized on value type until boxing/unboxing is sorted out in intrinsification
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128
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129 @SuppressWarnings("unused")
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130 @NodeIntrinsic
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131 public static void store(Object object, long offset, Object value, @ConstantNodeParameter Kind kind, @ConstantNodeParameter LocationIdentity locationIdentity) {
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132 unsafe.putObject(object, offset, value);
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133 }
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134
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135 @SuppressWarnings("unused")
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136 @NodeIntrinsic
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137 public static void store(Object object, long offset, boolean value, @ConstantNodeParameter Kind kind, @ConstantNodeParameter LocationIdentity locationIdentity) {
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138 unsafe.putBoolean(object, offset, value);
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139 }
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140
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141 @SuppressWarnings("unused")
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142 @NodeIntrinsic
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143 public static void store(Object object, long offset, byte value, @ConstantNodeParameter Kind kind, @ConstantNodeParameter LocationIdentity locationIdentity) {
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144 unsafe.putByte(object, offset, value);
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145 }
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146
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147 @SuppressWarnings("unused")
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148 @NodeIntrinsic
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149 public static void store(Object object, long offset, char value, @ConstantNodeParameter Kind kind, @ConstantNodeParameter LocationIdentity locationIdentity) {
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150 unsafe.putChar(object, offset, value);
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151 }
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152
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153 @SuppressWarnings("unused")
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154 @NodeIntrinsic
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155 public static void store(Object object, long offset, double value, @ConstantNodeParameter Kind kind, @ConstantNodeParameter LocationIdentity locationIdentity) {
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156 unsafe.putDouble(object, offset, value);
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157 }
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158
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159 @SuppressWarnings("unused")
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160 @NodeIntrinsic
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161 public static void store(Object object, long offset, float value, @ConstantNodeParameter Kind kind, @ConstantNodeParameter LocationIdentity locationIdentity) {
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162 unsafe.putFloat(object, offset, value);
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163 }
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164
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165 @SuppressWarnings("unused")
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166 @NodeIntrinsic
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167 public static void store(Object object, long offset, int value, @ConstantNodeParameter Kind kind, @ConstantNodeParameter LocationIdentity locationIdentity) {
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168 unsafe.putInt(object, offset, value);
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169 }
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170
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171 @SuppressWarnings("unused")
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172 @NodeIntrinsic
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173 public static void store(Object object, long offset, long value, @ConstantNodeParameter Kind kind, @ConstantNodeParameter LocationIdentity locationIdentity) {
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174 unsafe.putLong(object, offset, value);
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175 }
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176
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177 @SuppressWarnings("unused")
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178 @NodeIntrinsic
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179 public static void store(Object object, long offset, short value, @ConstantNodeParameter Kind kind, @ConstantNodeParameter LocationIdentity locationIdentity) {
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180 unsafe.putShort(object, offset, value);
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181 }
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182 }