Mercurial > hg > graal-jvmci-8
comparison jvmci/jdk.vm.ci.code/src/jdk/vm/ci/code/Location.java @ 22672:1bbd4a7c274b
Rename jdk.internal.jvmci to jdk.vm.ci
author | Tom Rodriguez <tom.rodriguez@oracle.com> |
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date | Thu, 08 Oct 2015 17:28:41 -0700 |
parents | jvmci/jdk.internal.jvmci.code/src/jdk/internal/jvmci/code/Location.java@ae67bd822493 |
children | 3e8ce13f4e12 |
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22671:97f30e4d0e95 | 22672:1bbd4a7c274b |
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1 /* | |
2 * Copyright (c) 2015, 2015, 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 jdk.vm.ci.code; | |
24 | |
25 /** | |
26 * Represents a location where a value can be stored. This can be either a {@link Register} or a | |
27 * stack slot. | |
28 */ | |
29 public final class Location { | |
30 | |
31 public final Register reg; | |
32 public final int offset; | |
33 | |
34 private Location(Register reg, int offset) { | |
35 this.reg = reg; | |
36 this.offset = offset; | |
37 } | |
38 | |
39 /** | |
40 * Create a {@link Location} for a register. | |
41 */ | |
42 public static Location register(Register reg) { | |
43 return new Location(reg, 0); | |
44 } | |
45 | |
46 /** | |
47 * Create a {@link Location} for a vector subregister. | |
48 * | |
49 * @param reg the {@link Register vector register} | |
50 * @param offset the offset in bytes into the vector register | |
51 */ | |
52 public static Location subregister(Register reg, int offset) { | |
53 return new Location(reg, offset); | |
54 } | |
55 | |
56 /** | |
57 * Create a {@link Location} for a stack slot. | |
58 */ | |
59 public static Location stack(int offset) { | |
60 return new Location(null, offset); | |
61 } | |
62 | |
63 public boolean isRegister() { | |
64 return reg != null; | |
65 } | |
66 | |
67 public boolean isStack() { | |
68 return reg == null; | |
69 } | |
70 | |
71 @Override | |
72 public String toString() { | |
73 String regName; | |
74 if (isRegister()) { | |
75 regName = reg.name + ":"; | |
76 } else { | |
77 regName = "stack:"; | |
78 } | |
79 return regName + offset; | |
80 } | |
81 } |