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comparison 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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21797:42452d2dfbec 21798:395ac43a8578
1 /*
2 * Copyright (c) 2014, 2014, Oracle and/or its affiliates. All rights reserved.
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 */
23 package com.oracle.jvmci.code;
24
25 import com.oracle.jvmci.meta.LIRKind;
26
27 /**
28 * {@link VirtualStackSlot}s are stack slots that are not yet fixed to specific frame offset. They
29 * are replaced by real {@link StackSlot}s with a fixed position in the frame before code emission.
30 */
31 public abstract class VirtualStackSlot extends StackSlotValue {
32
33 private final int id;
34
35 public VirtualStackSlot(int id, LIRKind lirKind) {
36 super(lirKind);
37 this.id = id;
38 }
39
40 public int getId() {
41 return id;
42 }
43
44 @Override
45 public String toString() {
46 return "vstack:" + id + getKindSuffix();
47 }
48
49 @Override
50 public int hashCode() {
51 final int prime = 31;
52 int result = super.hashCode();
53 result = prime * result + id;
54 return result;
55 }
56
57 @Override
58 public boolean equals(Object obj) {
59 if (this == obj) {
60 return true;
61 }
62 if (!super.equals(obj)) {
63 return false;
64 }
65 if (getClass() != obj.getClass()) {
66 return false;
67 }
68 VirtualStackSlot other = (VirtualStackSlot) obj;
69 if (id != other.id) {
70 return false;
71 }
72 return true;
73 }
74
75 }