Mercurial > hg > graal-jvmci-8
annotate jvmci/jdk.vm.ci.code/src/jdk/vm/ci/code/Register.java @ 24218:719853999215 jvmci-0.32
Merge with jdk8u141-b15
| author | Doug Simon <doug.simon@oracle.com> |
|---|---|
| date | Mon, 14 Aug 2017 23:20:38 +0200 |
| parents | 9ed5b586018b |
| children |
| rev | line source |
|---|---|
| 22054 | 1 /* |
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23396
9ed5b586018b
Replace LIRKind with abstract base class (JDK-8156942).
Roland Schatz <roland.schatz@oracle.com>
parents:
23395
diff
changeset
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2 * Copyright (c) 2009, 2016, Oracle and/or its affiliates. All rights reserved. |
| 22054 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
| 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 20 * or visit www.oracle.com if you need additional information or have any | |
| 21 * questions. | |
| 22 */ | |
|
22672
1bbd4a7c274b
Rename jdk.internal.jvmci to jdk.vm.ci
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
22662
diff
changeset
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23 package jdk.vm.ci.code; |
| 22054 | 24 |
|
23396
9ed5b586018b
Replace LIRKind with abstract base class (JDK-8156942).
Roland Schatz <roland.schatz@oracle.com>
parents:
23395
diff
changeset
|
25 import jdk.vm.ci.meta.ValueKind; |
| 22054 | 26 |
| 27 /** | |
| 28 * Represents a target machine register. | |
| 29 */ | |
| 30 public final class Register implements Comparable<Register> { | |
| 31 | |
| 32 public static final RegisterCategory SPECIAL = new RegisterCategory("SPECIAL"); | |
| 33 | |
| 34 /** | |
| 35 * Invalid register. | |
| 36 */ | |
| 37 public static final Register None = new Register(-1, -1, "noreg", SPECIAL); | |
| 38 | |
| 39 /** | |
| 40 * The identifier for this register that is unique across all the registers in a | |
|
23393
1d4ce2d19e52
clean up and minimize JVMCI (JDK-8156835)
Doug Simon <doug.simon@oracle.com>
parents:
22688
diff
changeset
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41 * {@link Architecture}. A valid register has {@code number >= 0}. |
| 22054 | 42 */ |
| 43 public final int number; | |
| 44 | |
| 45 /** | |
| 46 * The mnemonic of this register. | |
| 47 */ | |
| 48 public final String name; | |
| 49 | |
| 50 /** | |
| 51 * The actual encoding in a target machine instruction for this register, which may or may not | |
| 52 * be the same as {@link #number}. | |
| 53 */ | |
| 54 public final int encoding; | |
| 55 | |
| 56 /** | |
| 57 * The assembler calls this method to get the register's encoding. | |
| 58 */ | |
| 59 public int encoding() { | |
| 60 return encoding; | |
| 61 } | |
| 62 | |
| 63 /** | |
| 64 * A platform specific register category that describes which values can be stored in a | |
| 65 * register. | |
| 66 */ | |
| 67 private final RegisterCategory registerCategory; | |
| 68 | |
| 69 /** | |
| 70 * A platform specific register type that describes which values can be stored in a register. | |
| 71 */ | |
| 72 public static class RegisterCategory { | |
| 73 | |
| 74 private final String name; | |
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22662
31da25ac2805
Extra flag in RegisterCategory to determine whether a register is part of the reference map.
Roland Schatz <roland.schatz@oracle.com>
parents:
22640
diff
changeset
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75 private final boolean mayContainReference; |
| 22054 | 76 |
| 77 public RegisterCategory(String name) { | |
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22688
ef7d87db544a
Remove unused reference map index.
Roland Schatz <roland.schatz@oracle.com>
parents:
22672
diff
changeset
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78 this(name, true); |
| 22054 | 79 } |
| 80 | |
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22640
3abba3d4aef1
Register and PlatformKind declarations for AVX512.
Roland Schatz <roland.schatz@oracle.com>
parents:
22569
diff
changeset
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81 public RegisterCategory(String name, boolean mayContainReference) { |
| 22054 | 82 this.name = name; |
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22662
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Roland Schatz <roland.schatz@oracle.com>
parents:
22640
diff
changeset
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83 this.mayContainReference = mayContainReference; |
| 22054 | 84 } |
| 85 | |
| 86 @Override | |
| 87 public String toString() { | |
| 88 return name; | |
| 89 } | |
| 90 | |
| 91 @Override | |
| 92 public int hashCode() { | |
| 93 return 23 + name.hashCode(); | |
| 94 } | |
| 95 | |
| 96 @Override | |
| 97 public boolean equals(Object obj) { | |
| 98 if (obj instanceof RegisterCategory) { | |
| 99 RegisterCategory that = (RegisterCategory) obj; | |
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22688
ef7d87db544a
Remove unused reference map index.
Roland Schatz <roland.schatz@oracle.com>
parents:
22672
diff
changeset
|
100 return this.name.equals(that.name); |
| 22054 | 101 } |
| 102 return false; | |
| 103 } | |
| 104 } | |
| 105 | |
| 106 /** | |
| 107 * Creates a {@link Register} instance. | |
| 108 * | |
| 109 * @param number unique identifier for the register | |
| 110 * @param encoding the target machine encoding for the register | |
| 111 * @param name the mnemonic name for the register | |
| 112 * @param registerCategory the register category | |
| 113 */ | |
| 114 public Register(int number, int encoding, String name, RegisterCategory registerCategory) { | |
| 115 this.number = number; | |
| 116 this.name = name; | |
| 117 this.registerCategory = registerCategory; | |
| 118 this.encoding = encoding; | |
| 119 } | |
| 120 | |
| 121 public RegisterCategory getRegisterCategory() { | |
| 122 return registerCategory; | |
| 123 } | |
| 124 | |
| 125 /** | |
|
22662
31da25ac2805
Extra flag in RegisterCategory to determine whether a register is part of the reference map.
Roland Schatz <roland.schatz@oracle.com>
parents:
22640
diff
changeset
|
126 * Determine whether this register needs to be part of the reference map. |
|
31da25ac2805
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Roland Schatz <roland.schatz@oracle.com>
parents:
22640
diff
changeset
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127 */ |
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31da25ac2805
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Roland Schatz <roland.schatz@oracle.com>
parents:
22640
diff
changeset
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128 public boolean mayContainReference() { |
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31da25ac2805
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Roland Schatz <roland.schatz@oracle.com>
parents:
22640
diff
changeset
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129 return registerCategory.mayContainReference; |
|
31da25ac2805
Extra flag in RegisterCategory to determine whether a register is part of the reference map.
Roland Schatz <roland.schatz@oracle.com>
parents:
22640
diff
changeset
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130 } |
|
31da25ac2805
Extra flag in RegisterCategory to determine whether a register is part of the reference map.
Roland Schatz <roland.schatz@oracle.com>
parents:
22640
diff
changeset
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131 |
|
31da25ac2805
Extra flag in RegisterCategory to determine whether a register is part of the reference map.
Roland Schatz <roland.schatz@oracle.com>
parents:
22640
diff
changeset
|
132 /** |
| 22054 | 133 * Gets this register as a {@linkplain RegisterValue value} with a specified kind. |
| 134 * | |
| 135 * @param kind the specified kind | |
| 136 * @return the {@link RegisterValue} | |
| 137 */ | |
|
23396
9ed5b586018b
Replace LIRKind with abstract base class (JDK-8156942).
Roland Schatz <roland.schatz@oracle.com>
parents:
23395
diff
changeset
|
138 public RegisterValue asValue(ValueKind<?> kind) { |
| 22054 | 139 return new RegisterValue(kind, this); |
| 140 } | |
| 141 | |
| 142 /** | |
| 143 * Gets this register as a {@linkplain RegisterValue value} with no particular kind. | |
| 144 * | |
|
23396
9ed5b586018b
Replace LIRKind with abstract base class (JDK-8156942).
Roland Schatz <roland.schatz@oracle.com>
parents:
23395
diff
changeset
|
145 * @return a {@link RegisterValue} with {@link ValueKind#Illegal} kind. |
| 22054 | 146 */ |
| 147 public RegisterValue asValue() { | |
|
23396
9ed5b586018b
Replace LIRKind with abstract base class (JDK-8156942).
Roland Schatz <roland.schatz@oracle.com>
parents:
23395
diff
changeset
|
148 return asValue(ValueKind.Illegal); |
| 22054 | 149 } |
| 150 | |
| 151 /** | |
| 152 * Determines if this is a valid register. | |
| 153 * | |
| 154 * @return {@code true} iff this register is valid | |
| 155 */ | |
| 156 public boolean isValid() { | |
| 157 return number >= 0; | |
| 158 } | |
| 159 | |
| 160 @Override | |
| 161 public String toString() { | |
| 162 return name; | |
| 163 } | |
| 164 | |
| 165 @Override | |
| 166 public int compareTo(Register o) { | |
| 167 if (number < o.number) { | |
| 168 return -1; | |
| 169 } | |
| 170 if (number > o.number) { | |
| 171 return 1; | |
| 172 } | |
| 173 return 0; | |
| 174 } | |
| 175 | |
| 176 @Override | |
| 177 public int hashCode() { | |
| 178 return 17 + name.hashCode(); | |
| 179 } | |
| 180 | |
| 181 @Override | |
| 182 public boolean equals(Object obj) { | |
| 183 if (obj instanceof Register) { | |
| 184 Register other = (Register) obj; | |
| 185 if (number == other.number) { | |
| 186 assert name.equals(other.name); | |
| 187 assert encoding == other.encoding; | |
| 188 assert registerCategory.equals(other.registerCategory); | |
| 189 return true; | |
| 190 } | |
| 191 } | |
| 192 return false; | |
| 193 } | |
| 194 } |