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annotate graal/com.oracle.jvmci.hotspot/src/com/oracle/jvmci/hotspot/HotSpotCompressedNullConstant.java @ 21551:5324104ac4f3

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moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
author Doug Simon <doug.simon@oracle.com>
date Tue, 26 May 2015 17:13:37 +0200
parents
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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21551
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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1 /*
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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2 * Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved.
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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4 *
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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5 * This code is free software; you can redistribute it and/or modify it
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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6 * under the terms of the GNU General Public License version 2 only, as
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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7 * published by the Free Software Foundation.
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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8 *
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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12 * version 2 for more details (a copy is included in the LICENSE file that
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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13 * accompanied this code).
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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14 *
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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15 * You should have received a copy of the GNU General Public License version
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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16 * 2 along with this work; if not, write to the Free Software Foundation,
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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18 *
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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20 * or visit www.oracle.com if you need additional information or have any
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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21 * questions.
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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22 */
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23 package com.oracle.jvmci.hotspot;
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24
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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25 import com.oracle.graal.api.meta.*;
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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26
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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27 /**
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28 * The compressed representation of the {@link JavaConstant#NULL_POINTER null constant}.
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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29 */
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30 public final class HotSpotCompressedNullConstant extends AbstractValue implements JavaConstant, HotSpotConstant {
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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31
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32 public static final JavaConstant COMPRESSED_NULL = new HotSpotCompressedNullConstant();
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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33
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34 private HotSpotCompressedNullConstant() {
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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35 super(LIRKind.reference(Kind.Int));
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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36 }
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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37
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38 @Override
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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39 public boolean isNull() {
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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40 return true;
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41 }
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42
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43 @Override
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44 public boolean isCompressed() {
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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45 return true;
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46 }
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47
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48 @Override
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49 public boolean isDefaultForKind() {
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50 return true;
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51 }
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52
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53 @Override
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54 public Object asBoxedPrimitive() {
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55 throw new IllegalArgumentException();
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56 }
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57
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58 @Override
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59 public int asInt() {
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60 throw new IllegalArgumentException();
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61 }
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62
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63 @Override
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64 public boolean asBoolean() {
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65 throw new IllegalArgumentException();
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66 }
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67
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68 @Override
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69 public long asLong() {
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70 throw new IllegalArgumentException();
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71 }
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72
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73 @Override
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74 public float asFloat() {
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75 throw new IllegalArgumentException();
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76 }
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77
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78 @Override
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79 public double asDouble() {
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80 throw new IllegalArgumentException();
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81 }
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82
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83 @Override
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84 public String toString() {
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85 return JavaConstant.toString(this);
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86 }
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87
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88 @Override
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89 public String toValueString() {
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90 return "null";
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91 }
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92
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93 @Override
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94 public int hashCode() {
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95 return System.identityHashCode(this);
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96 }
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97
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98 @Override
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99 public boolean equals(Object o) {
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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100 return o instanceof HotSpotCompressedNullConstant;
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101 }
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102 }