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annotate graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotObjectConstantImpl.java @ 18280:c7e0405a35d8

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added HotSpotObjectConstant.getClassLoader()
author Doug Simon <doug.simon@oracle.com>
date Thu, 06 Nov 2014 13:19:25 +0100
parents f7d45e2426d4
children ecf3de366ecc
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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 com.oracle.graal.api.meta.*;
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26
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27 /**
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28 * Represents a constant non-{@code null} object reference, within the compiler and across the
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29 * compiler/runtime interface.
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30 */
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31 public final class HotSpotObjectConstantImpl extends JavaConstant implements HotSpotObjectConstant {
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32
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33 private static final long serialVersionUID = 3592151693708093496L;
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34
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35 public static JavaConstant forObject(Object object) {
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36 if (object == null) {
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37 return JavaConstant.NULL_OBJECT;
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38 } else {
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39 return new HotSpotObjectConstantImpl(object, false);
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40 }
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41 }
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42
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43 public static JavaConstant forBoxedValue(Kind kind, Object value) {
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44 if (kind == Kind.Object) {
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45 return HotSpotObjectConstantImpl.forObject(value);
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46 } else {
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47 return JavaConstant.forBoxedPrimitive(value);
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48 }
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49 }
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50
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51 public static Object asObject(Constant constant) {
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52 if (JavaConstant.isNull(constant)) {
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53 return null;
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54 } else {
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55 return ((HotSpotObjectConstantImpl) constant).object;
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56 }
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57 }
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58
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59 public static Object asBoxedValue(Constant constant) {
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60 if (JavaConstant.isNull(constant)) {
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61 return null;
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62 } else if (constant instanceof HotSpotObjectConstantImpl) {
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63 return ((HotSpotObjectConstantImpl) constant).object;
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64 } else {
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65 return ((JavaConstant) constant).asBoxedPrimitive();
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66 }
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67 }
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68
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69 public static boolean isCompressed(Constant constant) {
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70 if (JavaConstant.isNull(constant)) {
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71 return HotSpotCompressedNullConstant.NULL_OBJECT.equals(constant);
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72 } else {
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73 return ((HotSpotObjectConstantImpl) constant).compressed;
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74 }
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75 }
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76
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77 private final Object object;
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78 private final boolean compressed;
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79
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80 private HotSpotObjectConstantImpl(Object object, boolean compressed) {
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81 super(LIRKind.reference(compressed ? Kind.Int : Kind.Object));
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82 this.object = object;
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83 this.compressed = compressed;
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84 assert object != null;
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85 }
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86
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87 public JavaConstant compress() {
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88 assert !compressed;
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89 return new HotSpotObjectConstantImpl(object, true);
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90 }
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91
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92 public JavaConstant uncompress() {
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93 assert compressed;
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94 return new HotSpotObjectConstantImpl(object, false);
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95 }
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96
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97 public JavaConstant getClassLoader() {
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98 if (object instanceof Class) {
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99 /*
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100 * This is an intrinsic for getClassLoader0, which occurs after any security checks. We
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101 * can't call that directly so just call getClassLoader.
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102 */
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103 return HotSpotObjectConstantImpl.forObject(((Class<?>) object).getClassLoader());
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104 }
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105 return null;
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106 }
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107
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108 @Override
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109 public boolean isNull() {
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110 return false;
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111 }
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112
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113 @Override
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114 public boolean isDefaultForKind() {
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115 return false;
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116 }
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117
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118 @Override
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119 public Object asBoxedPrimitive() {
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120 throw new IllegalArgumentException();
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121 }
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122
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123 @Override
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124 public int asInt() {
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125 throw new IllegalArgumentException();
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126 }
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127
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128 @Override
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129 public boolean asBoolean() {
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130 throw new IllegalArgumentException();
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131 }
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132
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diff changeset
133 @Override
ef357effbda7 Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents: 18176
diff changeset
134 public long asLong() {
ef357effbda7 Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents: 18176
diff changeset
135 throw new IllegalArgumentException();
ef357effbda7 Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents: 18176
diff changeset
136 }
ef357effbda7 Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents: 18176
diff changeset
137
ef357effbda7 Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents: 18176
diff changeset
138 @Override
ef357effbda7 Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents: 18176
diff changeset
139 public float asFloat() {
ef357effbda7 Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents: 18176
diff changeset
140 throw new IllegalArgumentException();
ef357effbda7 Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents: 18176
diff changeset
141 }
ef357effbda7 Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents: 18176
diff changeset
142
ef357effbda7 Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents: 18176
diff changeset
143 @Override
ef357effbda7 Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents: 18176
diff changeset
144 public double asDouble() {
ef357effbda7 Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents: 18176
diff changeset
145 throw new IllegalArgumentException();
ef357effbda7 Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents: 18176
diff changeset
146 }
ef357effbda7 Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents: 18176
diff changeset
147
ef357effbda7 Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents: 18176
diff changeset
148 @Override
15018
db4254246f9a Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
149 public int hashCode() {
db4254246f9a Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
150 return System.identityHashCode(object);
db4254246f9a Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
151 }
db4254246f9a Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
152
db4254246f9a Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
153 @Override
db4254246f9a Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
154 public boolean equals(Object o) {
18262
f7d45e2426d4 converted HotSpotObjectConstant to an interface
Doug Simon <doug.simon@oracle.com>
parents: 18188
diff changeset
155 return o == this || (o instanceof HotSpotObjectConstantImpl && super.equals(o) && object == ((HotSpotObjectConstantImpl) o).object);
15018
db4254246f9a Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
156 }
db4254246f9a Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
157
db4254246f9a Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
158 @Override
db4254246f9a Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
159 public String toValueString() {
db4254246f9a Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
160 if (object instanceof String) {
db4254246f9a Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
161 return (String) object;
db4254246f9a Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
162 } else {
db4254246f9a Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
163 return Kind.Object.format(object);
db4254246f9a Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
164 }
db4254246f9a Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
165 }
db4254246f9a Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
166
db4254246f9a Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
167 @Override
db4254246f9a Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
168 public String toString() {
15909
e43591136d9f Support for compressed constants.
Roland Schatz <roland.schatz@oracle.com>
parents: 15018
diff changeset
169 return (compressed ? "NarrowOop" : getKind().getJavaName()) + "[" + Kind.Object.format(object) + "]";
15018
db4254246f9a Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
170 }
db4254246f9a Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
171 }