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annotate graal/com.oracle.max.cri/src/com/oracle/max/cri/ci/CiRegisterValue.java @ 5507:dc71b06d09f8

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Moving classes from cri.ri to api.meta.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Thu, 07 Jun 2012 18:24:06 +0200
parents 56860d3f9f39
children
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1 /*
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2 * Copyright (c) 2009, 2012, 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.max.cri.ci;
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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 * Denotes a register that stores a value of a fixed kind. There is exactly one (canonical) instance of {@code
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29 * CiRegisterValue} for each ({@link CiRegister}, {@link RiKind}) pair. Use {@link CiRegister#asValue(RiKind)} to
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30 * retrieve the canonical {@link CiRegisterValue} instance for a given (register,kind) pair.
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31 */
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32 public final class CiRegisterValue extends RiValue {
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33 private static final long serialVersionUID = 7999341472196897163L;
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35 /**
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36 * The register.
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37 */
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38 public final CiRegister reg;
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39
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40 /**
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41 * Should only be called from {@link CiRegister#CiRegister} to ensure canonicalization.
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42 */
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43 protected CiRegisterValue(RiKind kind, CiRegister register) {
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44 super(kind);
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45 this.reg = register;
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46 }
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47
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48 @Override
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49 public int hashCode() {
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50 return (reg.number << 4) ^ kind.ordinal();
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51 }
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53 @Override
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54 public String toString() {
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55 return reg.name + kindSuffix();
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56 }
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57 }