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annotate graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/snippets/HotSpotSnippetUtils.java @ 7099:3656236c7d27

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Cleanup of Kind class: remove use of Unsafe class
author Christian Wimmer <christian.wimmer@oracle.com>
date Thu, 29 Nov 2012 12:17:02 -0800
parents 41938af2b3d8
children 445193cc2a7d fcae6d960acd
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1 /*
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2 * Copyright (c) 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.hotspot.snippets;
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24
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25 import com.oracle.graal.api.code.*;
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26 import com.oracle.graal.api.meta.*;
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27 import com.oracle.graal.graph.Node.ConstantNodeParameter;
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28 import com.oracle.graal.graph.Node.NodeIntrinsic;
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29 import com.oracle.graal.hotspot.*;
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30 import com.oracle.graal.hotspot.meta.*;
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31 import com.oracle.graal.hotspot.nodes.*;
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32 import com.oracle.graal.nodes.extended.*;
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33 import com.oracle.graal.snippets.Snippet.Fold;
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34 import com.oracle.graal.snippets.*;
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35
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36 //JaCoCo Exclude
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37
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38 /**
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39 * A collection of methods used in HotSpot snippets.
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40 */
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41 public class HotSpotSnippetUtils {
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42
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43 @Fold
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44 static boolean verifyOops() {
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45 return HotSpotGraalRuntime.getInstance().getConfig().verifyOops;
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46 }
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47
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48 @Fold
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49 static int threadTlabTopOffset() {
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50 return HotSpotGraalRuntime.getInstance().getConfig().threadTlabTopOffset;
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51 }
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52
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53 @Fold
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54 static int threadTlabEndOffset() {
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55 return HotSpotGraalRuntime.getInstance().getConfig().threadTlabEndOffset;
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56 }
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57
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58 @Fold
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59 static Kind wordKind() {
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60 return HotSpotGraalRuntime.getInstance().getTarget().wordKind;
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61 }
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62
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63 @Fold
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64 static Register threadRegister() {
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65 return HotSpotGraalRuntime.getInstance().getRuntime().threadRegister();
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66 }
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67
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68 @Fold
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69 static Register stackPointerRegister() {
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70 return HotSpotGraalRuntime.getInstance().getRuntime().stackPointerRegister();
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71 }
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72
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73 @Fold
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74 static int wordSize() {
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75 return HotSpotGraalRuntime.getInstance().getTarget().wordSize;
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76 }
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77
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78 @Fold
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79 static int pageSize() {
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80 return HotSpotGraalRuntime.getInstance().getTarget().pageSize;
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81 }
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82
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83 @Fold
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84 static int prototypeMarkWordOffset() {
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85 return HotSpotGraalRuntime.getInstance().getConfig().prototypeMarkWordOffset;
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86 }
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87
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88 @Fold
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89 static int markOffset() {
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90 return HotSpotGraalRuntime.getInstance().getConfig().markOffset;
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91 }
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92
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93 @Fold
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94 static int unlockedMask() {
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95 return HotSpotGraalRuntime.getInstance().getConfig().unlockedMask;
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96 }
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97
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98 /**
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99 * Mask for a biasable, locked or unlocked mark word.
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100 * <pre>
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101 * +----------------------------------+-+-+
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102 * | 1|1|1|
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103 * +----------------------------------+-+-+
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104 * </pre>
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105 *
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106 */
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107 @Fold
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108 static int biasedLockMaskInPlace() {
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109 return HotSpotGraalRuntime.getInstance().getConfig().biasedLockMaskInPlace;
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110 }
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111
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112 @Fold
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113 static int epochMaskInPlace() {
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114 return HotSpotGraalRuntime.getInstance().getConfig().epochMaskInPlace;
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115 }
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116
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117 /**
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118 * Pattern for a biasable, unlocked mark word.
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119 * <pre>
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120 * +----------------------------------+-+-+
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121 * | 1|0|1|
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122 * +----------------------------------+-+-+
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123 * </pre>
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124 *
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125 */
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126 @Fold
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127 static int biasedLockPattern() {
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128 return HotSpotGraalRuntime.getInstance().getConfig().biasedLockPattern;
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129 }
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130
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131 @Fold
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132 static int ageMaskInPlace() {
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133 return HotSpotGraalRuntime.getInstance().getConfig().ageMaskInPlace;
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134 }
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135
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136 @Fold
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137 static int hubOffset() {
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138 return HotSpotGraalRuntime.getInstance().getConfig().hubOffset;
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139 }
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140
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141 @Fold
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142 static int metaspaceArrayLengthOffset() {
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143 return HotSpotGraalRuntime.getInstance().getConfig().metaspaceArrayLengthOffset;
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144 }
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145
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146 @Fold
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147 static int metaspaceArrayBaseOffset() {
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148 return HotSpotGraalRuntime.getInstance().getConfig().metaspaceArrayBaseOffset;
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149 }
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150
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151 @Fold
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152 static int arrayLengthOffset() {
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153 return HotSpotGraalRuntime.getInstance().getConfig().arrayLengthOffset;
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154 }
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155
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156 @Fold
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157 static int arrayBaseOffset(Kind elementKind) {
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158 return HotSpotRuntime.getArrayBaseOffset(elementKind);
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159 }
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160
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161 @Fold
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162 static int arrayIndexScale(Kind elementKind) {
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163 return HotSpotRuntime.getArrayIndexScale(elementKind);
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164 }
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165
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166 @Fold
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167 static int cardTableShift() {
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168 return HotSpotGraalRuntime.getInstance().getConfig().cardtableShift;
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169 }
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170
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171 @Fold
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172 static long cardTableStart() {
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173 return HotSpotGraalRuntime.getInstance().getConfig().cardtableStartAddress;
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174 }
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175
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176 @Fold
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177 static int superCheckOffsetOffset() {
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178 return HotSpotGraalRuntime.getInstance().getConfig().superCheckOffsetOffset;
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179 }
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180
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181 @Fold
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182 static int secondarySuperCacheOffset() {
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183 return HotSpotGraalRuntime.getInstance().getConfig().secondarySuperCacheOffset;
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184 }
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185
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186 @Fold
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187 static int secondarySupersOffset() {
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188 return HotSpotGraalRuntime.getInstance().getConfig().secondarySupersOffset;
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189 }
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190
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191 @Fold
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192 static int lockDisplacedMarkOffset() {
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193 return HotSpotGraalRuntime.getInstance().getConfig().basicLockDisplacedHeaderOffset;
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194 }
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195
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196 @Fold
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197 static boolean useBiasedLocking() {
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198 return HotSpotGraalRuntime.getInstance().getConfig().useBiasedLocking;
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199 }
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200
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201 /**
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202 * Loads the hub from a object, null checking it first.
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203 */
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204 static Word loadHub(Object object) {
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205 return loadHubIntrinsic(object, wordKind());
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206 }
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207
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208 static Object verifyOop(Object object) {
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209 if (verifyOops()) {
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210 VerifyOopStubCall.call(object);
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211 }
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212 return object;
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213 }
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214
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215 /**
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216 * Gets the value of the stack pointer register as a Word.
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217 */
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218 static Word stackPointer() {
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219 return HotSpotSnippetUtils.registerAsWord(stackPointerRegister());
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220 }
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221
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222 /**
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223 * Gets the value of the thread register as a Word.
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224 */
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225 static Word thread() {
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226 return HotSpotSnippetUtils.registerAsWord(threadRegister());
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227 }
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228
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229 static int loadIntFromWord(Word address, int offset) {
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230 Integer value = UnsafeLoadNode.load(address, 0, offset, Kind.Int);
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231 return value;
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232 }
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233
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234 static Word loadWordFromWord(Word address, int offset) {
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235 return loadWordFromWordIntrinsic(address, 0, offset, wordKind());
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236 }
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237
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238 static Word loadWordFromObject(Object object, int offset) {
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239 return loadWordFromObjectIntrinsic(object, 0, offset, wordKind());
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240 }
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241
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242 @NodeIntrinsic(value = RegisterNode.class, setStampFromReturnType = true)
6458
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243 public static native Word registerAsWord(@ConstantNodeParameter Register register);
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244
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245 @NodeIntrinsic(value = UnsafeLoadNode.class, setStampFromReturnType = true)
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246 private static native Word loadWordFromObjectIntrinsic(Object object, @ConstantNodeParameter int displacement, long offset, @ConstantNodeParameter Kind wordKind);
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247
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248 @NodeIntrinsic(value = UnsafeLoadNode.class, setStampFromReturnType = true)
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249 private static native Word loadWordFromWordIntrinsic(Word address, @ConstantNodeParameter int displacement, long offset, @ConstantNodeParameter Kind wordKind);
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250
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251 @NodeIntrinsic(value = LoadHubNode.class, setStampFromReturnType = true)
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252 static native Word loadHubIntrinsic(Object object, @ConstantNodeParameter Kind word);
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253
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254 static {
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255 assert arrayIndexScale(Kind.Byte) == 1;
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256 assert arrayIndexScale(Kind.Boolean) == 1;
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257 assert arrayIndexScale(Kind.Char) == 2;
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258 assert arrayIndexScale(Kind.Short) == 2;
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259 assert arrayIndexScale(Kind.Int) == 4;
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260 assert arrayIndexScale(Kind.Long) == 8;
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261 assert arrayIndexScale(Kind.Float) == 4;
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262 assert arrayIndexScale(Kind.Double) == 8;
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263 }
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264 }