Mercurial > hg > graal-compiler
annotate graal/com.oracle.jvmci.code/src/com/oracle/jvmci/code/RegisterValue.java @ 21556:48c1ebd24120
renamed com.oracle.graal.api[meta|code] modules to com.oracle.jvmci.[meta|code] (JBS:GRAAL-53)
author | Doug Simon <doug.simon@oracle.com> |
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date | Wed, 27 May 2015 00:36:16 +0200 |
parents | graal/com.oracle.graal.api.code/src/com/oracle/graal/api/code/RegisterValue.java@082417ac43e4 |
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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.jvmci.code; |
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24 |
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25 import com.oracle.jvmci.meta.*; |
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26 |
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27 /** |
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28 * Denotes a register that stores a value of a fixed kind. There is exactly one (canonical) instance |
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29 * of {@link RegisterValue} for each ({@link Register}, {@link Kind}) pair. Use |
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30 * {@link Register#asValue(LIRKind)} to retrieve the canonical {@link RegisterValue} instance for a |
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31 * given (register,kind) pair. |
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32 */ |
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33 public final class RegisterValue extends AllocatableValue { |
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34 |
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35 private final Register reg; |
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36 |
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37 /** |
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38 * Should only be called from {@link Register#Register} to ensure canonicalization. |
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39 */ |
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40 protected RegisterValue(LIRKind kind, Register register) { |
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41 super(kind); |
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42 this.reg = register; |
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43 } |
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44 |
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45 @Override |
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46 public String toString() { |
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47 return getRegister().name + getKindSuffix(); |
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48 } |
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49 |
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50 /** |
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51 * @return the register that contains the value |
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52 */ |
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53 public Register getRegister() { |
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54 return reg; |
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55 } |
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56 |
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57 @Override |
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58 public int hashCode() { |
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59 return 29 * super.hashCode() + reg.hashCode(); |
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60 } |
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61 |
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62 @Override |
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63 public boolean equals(Object obj) { |
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64 if (obj instanceof RegisterValue) { |
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65 RegisterValue other = (RegisterValue) obj; |
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66 return super.equals(obj) && reg.equals(other.reg); |
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67 } |
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68 return false; |
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69 } |
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70 } |