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annotate jvmci/com.oracle.jvmci.code/src/com/oracle/jvmci/code/VirtualStackSlot.java @ 21798:395ac43a8578

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moved JVMCI sources from graal/ to jvmci/ directory
author Doug Simon <doug.simon@oracle.com>
date Tue, 09 Jun 2015 00:22:49 +0200
parents graal/com.oracle.jvmci.code/src/com/oracle/jvmci/code/VirtualStackSlot.java@48c1ebd24120
children
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1 /*
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2 * Copyright (c) 2014, 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.LIRKind;
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26
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27 /**
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28 * {@link VirtualStackSlot}s are stack slots that are not yet fixed to specific frame offset. They
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29 * are replaced by real {@link StackSlot}s with a fixed position in the frame before code emission.
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30 */
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31 public abstract class VirtualStackSlot extends StackSlotValue {
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32
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33 private final int id;
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34
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35 public VirtualStackSlot(int id, LIRKind lirKind) {
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36 super(lirKind);
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37 this.id = id;
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38 }
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39
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40 public int getId() {
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41 return id;
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42 }
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43
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44 @Override
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45 public String toString() {
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46 return "vstack:" + id + getKindSuffix();
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47 }
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48
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49 @Override
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50 public int hashCode() {
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51 final int prime = 31;
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52 int result = super.hashCode();
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53 result = prime * result + id;
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54 return result;
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55 }
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56
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57 @Override
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58 public boolean equals(Object obj) {
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59 if (this == obj) {
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60 return true;
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61 }
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62 if (!super.equals(obj)) {
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63 return false;
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64 }
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65 if (getClass() != obj.getClass()) {
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66 return false;
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67 }
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68 VirtualStackSlot other = (VirtualStackSlot) obj;
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69 if (id != other.id) {
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70 return false;
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71 }
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72 return true;
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73 }
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74
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75 }