Mercurial > hg > truffle
annotate graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotObjectConstantImpl.java @ 18530:2906b3cc3e2f
moved application of Remote marker interface to implementation classes only
author | Doug Simon <doug.simon@oracle.com> |
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date | Wed, 26 Nov 2014 13:20:14 +0100 |
parents | ca81508f2a19 |
children | 25a21e1794ec |
rev | line source |
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1 /* |
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2 * Copyright (c) 2009, 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.hotspot.meta; |
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24 |
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25 import java.lang.invoke.*; |
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26 |
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27 import com.oracle.graal.api.code.*; |
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28 import com.oracle.graal.api.meta.*; |
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29 import com.oracle.graal.graph.*; |
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30 import com.oracle.graal.lir.*; |
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31 |
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32 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings; |
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33 |
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34 /** |
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35 * Represents a constant non-{@code null} object reference, within the compiler and across the |
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36 * compiler/runtime interface. |
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37 */ |
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38 public final class HotSpotObjectConstantImpl extends AbstractValue implements HotSpotObjectConstant, Remote { |
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39 |
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40 private static final long serialVersionUID = 3592151693708093496L; |
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41 |
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42 public static JavaConstant forObject(Object object) { |
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43 return forObject(object, false); |
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44 } |
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45 |
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46 public static JavaConstant forObject(Object object, boolean compressed) { |
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47 if (object == null) { |
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48 return compressed ? HotSpotCompressedNullConstant.COMPRESSED_NULL : JavaConstant.NULL_POINTER; |
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49 } else { |
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50 return new HotSpotObjectConstantImpl(object, compressed); |
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51 } |
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52 } |
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53 |
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54 public static JavaConstant forStableArray(Object object, int stableDimension, boolean isDefaultStable) { |
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55 if (object == null) { |
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56 return JavaConstant.NULL_POINTER; |
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57 } else { |
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58 assert object.getClass().isArray(); |
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59 return new HotSpotObjectConstantImpl(object, false, stableDimension, isDefaultStable); |
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60 } |
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61 } |
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62 |
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63 public static JavaConstant forBoxedValue(Kind kind, Object value) { |
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64 if (kind == Kind.Object) { |
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65 return HotSpotObjectConstantImpl.forObject(value); |
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66 } else { |
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67 return JavaConstant.forBoxedPrimitive(value); |
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68 } |
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69 } |
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70 |
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71 public static Object asBoxedValue(Constant constant) { |
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72 if (JavaConstant.isNull(constant)) { |
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73 return null; |
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74 } else if (constant instanceof HotSpotObjectConstantImpl) { |
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75 return ((HotSpotObjectConstantImpl) constant).object; |
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76 } else { |
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77 return ((JavaConstant) constant).asBoxedPrimitive(); |
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78 } |
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79 } |
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80 |
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81 private final Object object; |
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82 private final boolean compressed; |
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83 private final byte stableDimension; |
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84 private final boolean isDefaultStable; |
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85 |
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86 private HotSpotObjectConstantImpl(Object object, boolean compressed, int stableDimension, boolean isDefaultStable) { |
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87 super(LIRKind.reference(compressed ? Kind.Int : Kind.Object)); |
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88 this.object = object; |
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89 this.compressed = compressed; |
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90 this.stableDimension = (byte) stableDimension; |
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91 this.isDefaultStable = isDefaultStable; |
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92 assert object != null; |
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93 assert stableDimension == 0 || (object != null && object.getClass().isArray()); |
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94 assert stableDimension >= 0 && stableDimension <= 255; |
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95 assert !isDefaultStable || stableDimension > 0; |
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96 } |
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97 |
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98 private HotSpotObjectConstantImpl(Object object, boolean compressed) { |
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99 this(object, compressed, 0, false); |
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100 } |
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101 |
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102 /** |
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103 * Package-private accessor for the object represented by this constant. |
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104 */ |
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105 Object object() { |
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106 return object; |
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107 } |
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108 |
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109 /** |
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110 * Determines if the object represented by this constant is {@link Object#equals(Object) equal} |
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111 * to a given object. |
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112 */ |
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113 public boolean isEqualTo(Object obj) { |
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114 return object.equals(obj); |
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115 } |
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116 |
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117 /** |
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118 * Gets the class of the object represented by this constant. |
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119 */ |
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120 public Class<?> getObjectClass() { |
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121 return object.getClass(); |
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122 } |
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123 |
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124 public boolean isCompressed() { |
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125 return compressed; |
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126 } |
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127 |
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128 public JavaConstant compress() { |
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129 assert !compressed; |
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130 return new HotSpotObjectConstantImpl(object, true, stableDimension, isDefaultStable); |
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131 } |
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132 |
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133 public JavaConstant uncompress() { |
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134 assert compressed; |
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135 return new HotSpotObjectConstantImpl(object, false, stableDimension, isDefaultStable); |
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136 } |
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137 |
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138 public JavaConstant getClassLoader() { |
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139 if (object instanceof Class) { |
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140 /* |
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141 * This is an intrinsic for getClassLoader0, which occurs after any security checks. We |
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142 * can't call that directly so just call getClassLoader. |
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143 */ |
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144 return HotSpotObjectConstantImpl.forObject(((Class<?>) object).getClassLoader()); |
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145 } |
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146 return null; |
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147 } |
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148 |
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added HotSpotObjectConstant.getIdentityHashCode()
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149 public int getIdentityHashCode() { |
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150 return System.identityHashCode(object); |
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151 } |
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152 |
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153 public JavaConstant getNodeClass() { |
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154 if (object instanceof Class) { |
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155 return HotSpotObjectConstantImpl.forObject(NodeClass.get((Class<?>) object)); |
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156 } |
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157 return null; |
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158 } |
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159 |
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160 public JavaConstant getComponentType() { |
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161 if (object instanceof Class) { |
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162 return HotSpotObjectConstantImpl.forObject(((Class<?>) object).getComponentType()); |
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163 } |
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164 return null; |
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165 } |
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166 |
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167 public JavaConstant getSuperclass() { |
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168 if (object instanceof Class) { |
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169 return HotSpotObjectConstantImpl.forObject(((Class<?>) object).getSuperclass()); |
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170 } |
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171 return null; |
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172 } |
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173 |
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174 public JavaConstant getCallSiteTarget(Assumptions assumptions) { |
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175 if (object instanceof CallSite) { |
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176 CallSite callSite = (CallSite) object; |
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177 MethodHandle target = callSite.getTarget(); |
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178 if (!(callSite instanceof ConstantCallSite)) { |
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179 if (assumptions == null || !assumptions.useOptimisticAssumptions()) { |
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180 return null; |
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181 } |
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|
182 assumptions.record(new Assumptions.CallSiteTargetValue(callSite, target)); |
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183 } |
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184 return HotSpotObjectConstantImpl.forObject(target); |
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185 } |
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186 return null; |
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|
187 } |
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added HotSpotObjectConstant.getCallSiteTarget()
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|
188 |
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added HotSpotObjectConstant.getCompositeValueClass()
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|
189 @SuppressWarnings("unchecked") |
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190 public JavaConstant getCompositeValueClass() { |
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added HotSpotObjectConstant.getCompositeValueClass()
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191 if (object instanceof Class) { |
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|
192 Class<? extends CompositeValue> c = (Class<? extends CompositeValue>) object; |
18293
ab8fbaa5e72f
fixed minor regressions after removing HotSpotObjectConstantImpl.asObject()
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|
193 assert CompositeValue.class.isAssignableFrom(c) : c; |
18287
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194 return HotSpotObjectConstantImpl.forObject(CompositeValueClass.get(c)); |
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195 } |
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196 return null; |
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|
197 } |
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|
198 |
18288
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added HotSpotObjectConstant.isInternedString()
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|
199 @SuppressFBWarnings(value = "ES_COMPARING_STRINGS_WITH_EQ", justification = "reference equality is what we want") |
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added HotSpotObjectConstant.isInternedString()
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200 public boolean isInternedString() { |
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added HotSpotObjectConstant.isInternedString()
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201 if (object instanceof String) { |
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added HotSpotObjectConstant.isInternedString()
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|
202 String s = (String) object; |
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added HotSpotObjectConstant.isInternedString()
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203 return s.intern() == s; |
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added HotSpotObjectConstant.isInternedString()
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|
204 } |
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added HotSpotObjectConstant.isInternedString()
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|
205 return false; |
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added HotSpotObjectConstant.isInternedString()
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|
206 } |
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added HotSpotObjectConstant.isInternedString()
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|
207 |
15018
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Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
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|
208 @Override |
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209 public boolean isNull() { |
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210 return false; |
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|
211 } |
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|
212 |
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|
213 @Override |
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|
214 public boolean isDefaultForKind() { |
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|
215 return false; |
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|
216 } |
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|
217 |
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|
218 @Override |
18186
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Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
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|
219 public Object asBoxedPrimitive() { |
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Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
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|
220 throw new IllegalArgumentException(); |
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221 } |
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222 |
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|
223 @Override |
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224 public int asInt() { |
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|
225 throw new IllegalArgumentException(); |
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226 } |
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227 |
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228 @Override |
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229 public boolean asBoolean() { |
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230 throw new IllegalArgumentException(); |
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231 } |
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232 |
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233 @Override |
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234 public long asLong() { |
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235 throw new IllegalArgumentException(); |
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236 } |
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237 |
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238 @Override |
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239 public float asFloat() { |
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240 throw new IllegalArgumentException(); |
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241 } |
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242 |
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243 @Override |
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244 public double asDouble() { |
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245 throw new IllegalArgumentException(); |
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246 } |
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247 |
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248 @Override |
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249 public int hashCode() { |
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250 return System.identityHashCode(object); |
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251 } |
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252 |
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253 @Override |
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254 public boolean equals(Object o) { |
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255 if (o == this) { |
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256 return true; |
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257 } else if (o instanceof HotSpotObjectConstantImpl) { |
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258 HotSpotObjectConstantImpl other = (HotSpotObjectConstantImpl) o; |
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259 return super.equals(o) && object == other.object && compressed == other.compressed && stableDimension == other.stableDimension && isDefaultStable == other.isDefaultStable; |
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260 } |
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261 return false; |
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262 } |
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263 |
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264 @Override |
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265 public String toValueString() { |
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266 if (object instanceof String) { |
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267 return (String) object; |
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268 } else { |
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269 return Kind.Object.format(object); |
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270 } |
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271 } |
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272 |
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273 @Override |
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274 public String toString() { |
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275 return (compressed ? "NarrowOop" : getKind().getJavaName()) + "[" + Kind.Object.format(object) + "]"; |
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276 } |
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277 |
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278 /** |
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279 * Number of stable dimensions if this constant is a stable array. |
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280 */ |
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281 public int getStableDimension() { |
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282 return stableDimension & 0xff; |
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283 } |
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284 |
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285 /** |
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286 * Returns {@code true} if this is a stable array constant and its elements should be considered |
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287 * as stable regardless of whether they are default values. |
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288 */ |
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289 public boolean isDefaultStable() { |
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290 return isDefaultStable; |
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291 } |
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292 } |