Mercurial > hg > graal-jvmci-8
annotate jvmci/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/HotSpotObjectConstantImpl.java @ 22679:4688478ecb7b
Make space in frame for native callee to spill outgoing parameters
author | Stefan Anzinger <stefan.anzinger@oracle.com> |
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date | Tue, 13 Oct 2015 17:07:59 +0200 |
parents | 1bbd4a7c274b |
children | f102ee538647 |
rev | line source |
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1 /* |
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2 * Copyright (c) 2009, 2015, 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 jdk.vm.ci.hotspot; |
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24 |
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25 import static jdk.vm.ci.hotspot.HotSpotResolvedObjectTypeImpl.fromObjectClass; |
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26 |
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27 import java.lang.invoke.CallSite; |
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28 import java.lang.invoke.ConstantCallSite; |
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29 import java.lang.invoke.MethodHandle; |
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30 |
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31 import jdk.vm.ci.inittimer.SuppressFBWarnings; |
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32 import jdk.vm.ci.meta.Assumptions; |
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33 import jdk.vm.ci.meta.Constant; |
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34 import jdk.vm.ci.meta.JavaConstant; |
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35 import jdk.vm.ci.meta.JavaKind; |
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36 import jdk.vm.ci.meta.ResolvedJavaType; |
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37 |
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38 /** |
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39 * Represents a constant non-{@code null} object reference, within the compiler and across the |
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40 * compiler/runtime interface. |
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41 */ |
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42 final class HotSpotObjectConstantImpl implements HotSpotObjectConstant, HotSpotProxified { |
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43 |
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44 static JavaConstant forObject(Object object) { |
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45 return forObject(object, false); |
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46 } |
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47 |
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48 static JavaConstant forObject(Object object, boolean compressed) { |
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49 if (object == null) { |
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50 return compressed ? HotSpotCompressedNullConstant.COMPRESSED_NULL : JavaConstant.NULL_POINTER; |
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51 } else { |
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52 return new HotSpotObjectConstantImpl(object, compressed); |
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53 } |
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54 } |
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55 |
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56 static JavaConstant forStableArray(Object object, int stableDimension, boolean isDefaultStable) { |
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57 if (object == null) { |
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58 return JavaConstant.NULL_POINTER; |
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59 } else { |
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60 assert object.getClass().isArray(); |
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61 return new HotSpotObjectConstantImpl(object, false, stableDimension, isDefaultStable); |
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62 } |
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63 } |
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64 |
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65 public static JavaConstant forBoxedValue(JavaKind kind, Object value) { |
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66 if (kind == JavaKind.Object) { |
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67 return HotSpotObjectConstantImpl.forObject(value); |
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68 } else { |
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69 return JavaConstant.forBoxedPrimitive(value); |
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70 } |
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71 } |
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72 |
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73 static Object asBoxedValue(Constant constant) { |
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74 if (JavaConstant.isNull(constant)) { |
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75 return null; |
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76 } else if (constant instanceof HotSpotObjectConstantImpl) { |
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77 return ((HotSpotObjectConstantImpl) constant).object; |
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78 } else { |
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79 return ((JavaConstant) constant).asBoxedPrimitive(); |
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80 } |
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81 } |
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82 |
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83 private final Object object; |
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84 private final boolean compressed; |
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85 private final byte stableDimension; |
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86 private final boolean isDefaultStable; |
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87 |
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88 private HotSpotObjectConstantImpl(Object object, boolean compressed, int stableDimension, boolean isDefaultStable) { |
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89 this.object = object; |
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90 this.compressed = compressed; |
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91 this.stableDimension = (byte) stableDimension; |
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92 this.isDefaultStable = isDefaultStable; |
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93 assert object != null; |
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94 assert stableDimension == 0 || (object != null && object.getClass().isArray()); |
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95 assert stableDimension >= 0 && stableDimension <= 255; |
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96 assert !isDefaultStable || stableDimension > 0; |
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97 } |
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98 |
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99 private HotSpotObjectConstantImpl(Object object, boolean compressed) { |
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100 this(object, compressed, 0, false); |
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101 } |
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102 |
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103 @Override |
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104 public JavaKind getJavaKind() { |
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105 return JavaKind.Object; |
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106 } |
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107 |
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108 /** |
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109 * Package-private accessor for the object represented by this constant. |
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110 */ |
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111 Object object() { |
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112 return object; |
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113 } |
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114 |
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replaced HotSpotObjectConstantImpl.isCompressed() with HotSpotObjectConstant.isCompressed()
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115 public boolean isCompressed() { |
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116 return compressed; |
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117 } |
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118 |
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119 public JavaConstant compress() { |
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120 assert !compressed; |
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121 return new HotSpotObjectConstantImpl(object, true, stableDimension, isDefaultStable); |
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122 } |
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123 |
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124 public JavaConstant uncompress() { |
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125 assert compressed; |
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126 return new HotSpotObjectConstantImpl(object, false, stableDimension, isDefaultStable); |
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127 } |
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128 |
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129 public HotSpotResolvedObjectType getType() { |
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130 return fromObjectClass(object.getClass()); |
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131 } |
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132 |
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133 public JavaConstant getClassLoader() { |
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134 if (object instanceof Class) { |
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added HotSpotObjectConstant.getClassLoader()
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135 /* |
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136 * This is an intrinsic for getClassLoader0, which occurs after any security checks. We |
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added HotSpotObjectConstant.getClassLoader()
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137 * can't call that directly so just call getClassLoader. |
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138 */ |
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139 return HotSpotObjectConstantImpl.forObject(((Class<?>) object).getClassLoader()); |
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140 } |
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added HotSpotObjectConstant.getClassLoader()
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141 return null; |
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added HotSpotObjectConstant.getClassLoader()
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142 } |
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added HotSpotObjectConstant.getClassLoader()
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143 |
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added HotSpotObjectConstant.getIdentityHashCode()
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144 public int getIdentityHashCode() { |
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added HotSpotObjectConstant.getIdentityHashCode()
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145 return System.identityHashCode(object); |
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added HotSpotObjectConstant.getIdentityHashCode()
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146 } |
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added HotSpotObjectConstant.getIdentityHashCode()
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147 |
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added HotSpotObjectConstant.getComponentType()
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|
148 public JavaConstant getComponentType() { |
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added HotSpotObjectConstant.getComponentType()
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149 if (object instanceof Class) { |
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150 return HotSpotObjectConstantImpl.forObject(((Class<?>) object).getComponentType()); |
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|
151 } |
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152 return null; |
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|
153 } |
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|
154 |
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|
155 public JavaConstant getSuperclass() { |
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added HotSpotObjectConstant.getSuperclass()
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156 if (object instanceof Class) { |
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added HotSpotObjectConstant.getSuperclass()
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|
157 return HotSpotObjectConstantImpl.forObject(((Class<?>) object).getSuperclass()); |
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|
158 } |
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|
159 return null; |
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|
160 } |
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added HotSpotObjectConstant.getSuperclass()
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|
161 |
18286
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added HotSpotObjectConstant.getCallSiteTarget()
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|
162 public JavaConstant getCallSiteTarget(Assumptions assumptions) { |
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added HotSpotObjectConstant.getCallSiteTarget()
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163 if (object instanceof CallSite) { |
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added HotSpotObjectConstant.getCallSiteTarget()
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164 CallSite callSite = (CallSite) object; |
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165 MethodHandle target = callSite.getTarget(); |
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added HotSpotObjectConstant.getCallSiteTarget()
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|
166 if (!(callSite instanceof ConstantCallSite)) { |
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|
167 if (assumptions == null) { |
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added HotSpotObjectConstant.getCallSiteTarget()
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|
168 return null; |
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added HotSpotObjectConstant.getCallSiteTarget()
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|
169 } |
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added HotSpotObjectConstant.getCallSiteTarget()
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|
170 assumptions.record(new Assumptions.CallSiteTargetValue(callSite, target)); |
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added HotSpotObjectConstant.getCallSiteTarget()
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|
171 } |
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added HotSpotObjectConstant.getCallSiteTarget()
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172 return HotSpotObjectConstantImpl.forObject(target); |
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|
173 } |
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added HotSpotObjectConstant.getCallSiteTarget()
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|
174 return null; |
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added HotSpotObjectConstant.getCallSiteTarget()
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|
175 } |
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added HotSpotObjectConstant.getCallSiteTarget()
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|
176 |
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added HotSpotObjectConstant.isInternedString()
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|
177 @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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178 public boolean isInternedString() { |
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added HotSpotObjectConstant.isInternedString()
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|
179 if (object instanceof String) { |
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added HotSpotObjectConstant.isInternedString()
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|
180 String s = (String) object; |
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added HotSpotObjectConstant.isInternedString()
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|
181 return s.intern() == s; |
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added HotSpotObjectConstant.isInternedString()
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|
182 } |
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added HotSpotObjectConstant.isInternedString()
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|
183 return false; |
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added HotSpotObjectConstant.isInternedString()
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|
184 } |
feef9ed5fc56
added HotSpotObjectConstant.isInternedString()
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changeset
|
185 |
18533
25a21e1794ec
modified SnippetReflectionProvider to support both VM-side and compiler-side constants in a compilation replay context
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|
186 public <T> T asObject(Class<T> type) { |
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modified SnippetReflectionProvider to support both VM-side and compiler-side constants in a compilation replay context
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|
187 if (type.isInstance(object)) { |
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modified SnippetReflectionProvider to support both VM-side and compiler-side constants in a compilation replay context
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188 return type.cast(object); |
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|
189 } |
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|
190 return null; |
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|
191 } |
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|
192 |
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|
193 public Object asObject(ResolvedJavaType type) { |
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modified SnippetReflectionProvider to support both VM-side and compiler-side constants in a compilation replay context
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|
194 if (type.isInstance(this)) { |
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|
195 return object; |
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|
196 } |
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|
197 return null; |
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|
198 } |
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|
199 |
15018
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Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
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|
200 @Override |
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|
201 public boolean isNull() { |
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|
202 return false; |
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|
203 } |
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|
204 |
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|
205 @Override |
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|
206 public boolean isDefaultForKind() { |
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|
207 return false; |
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|
208 } |
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|
209 |
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|
210 @Override |
18186
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|
211 public Object asBoxedPrimitive() { |
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|
212 throw new IllegalArgumentException(); |
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|
213 } |
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|
214 |
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|
215 @Override |
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|
216 public int asInt() { |
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|
217 throw new IllegalArgumentException(); |
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218 } |
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219 |
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|
220 @Override |
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|
221 public boolean asBoolean() { |
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|
222 throw new IllegalArgumentException(); |
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223 } |
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|
224 |
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|
225 @Override |
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|
226 public long asLong() { |
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|
227 throw new IllegalArgumentException(); |
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228 } |
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229 |
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|
230 @Override |
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|
231 public float asFloat() { |
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232 throw new IllegalArgumentException(); |
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233 } |
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234 |
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235 @Override |
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236 public double asDouble() { |
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237 throw new IllegalArgumentException(); |
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238 } |
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239 |
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240 @Override |
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241 public int hashCode() { |
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242 return System.identityHashCode(object); |
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243 } |
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244 |
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245 @Override |
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246 public boolean equals(Object o) { |
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247 if (o == this) { |
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248 return true; |
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249 } else if (o instanceof HotSpotObjectConstantImpl) { |
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250 HotSpotObjectConstantImpl other = (HotSpotObjectConstantImpl) o; |
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251 return object == other.object && compressed == other.compressed && stableDimension == other.stableDimension && isDefaultStable == other.isDefaultStable; |
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252 } |
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253 return false; |
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254 } |
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255 |
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256 @Override |
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257 public String toValueString() { |
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258 if (object instanceof String) { |
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259 return "\"" + (String) object + "\""; |
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260 } else { |
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261 return JavaKind.Object.format(object); |
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262 } |
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263 } |
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264 |
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265 @Override |
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266 public String toString() { |
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267 return (compressed ? "NarrowOop" : getJavaKind().getJavaName()) + "[" + JavaKind.Object.format(object) + "]"; |
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268 } |
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269 |
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270 /** |
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271 * Number of stable dimensions if this constant is a stable array. |
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272 */ |
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273 public int getStableDimension() { |
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274 return stableDimension & 0xff; |
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275 } |
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276 |
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277 /** |
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278 * Returns {@code true} if this is a stable array constant and its elements should be considered |
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279 * as stable regardless of whether they are default values. |
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280 */ |
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281 public boolean isDefaultStable() { |
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282 return isDefaultStable; |
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283 } |
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284 } |