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comparison graal/com.oracle.jvmci.meta/src/com/oracle/jvmci/meta/Value.java @ 21556:48c1ebd24120

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renamed com.oracle.graal.api[meta|code] modules to com.oracle.jvmci.[meta|code] (JBS:GRAAL-53)
author Doug Simon <doug.simon@oracle.com>
date Wed, 27 May 2015 00:36:16 +0200
parents graal/com.oracle.graal.api.meta/src/com/oracle/graal/api/meta/Value.java@082417ac43e4
children 26774dc3a5e7 99fe8116f3e8
comparison
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21555:d12eaef9af72 21556:48c1ebd24120
1 /*
2 * Copyright (c) 2009, 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.meta;
24
25 /**
26 * Interface for values manipulated by the compiler. All values have a {@linkplain Kind kind} and
27 * are immutable.
28 */
29 public interface Value extends KindProvider, TrustedInterface {
30
31 AllocatableValue ILLEGAL = new AllocatableValue(LIRKind.Illegal) {
32
33 @Override
34 public String toString() {
35 return "-";
36 }
37
38 @Override
39 public boolean equals(Object other) {
40 // Due to de-serialization this object may exist multiple times. So we compare classes
41 // instead of the individual objects. (This anonymous class has always the same meaning)
42 return other != null && this.getClass() == other.getClass();
43 }
44 };
45
46 LIRKind getLIRKind();
47
48 /**
49 * Returns the platform specific kind used to store this value.
50 */
51 PlatformKind getPlatformKind();
52
53 /**
54 * Checks if this value is identical to {@code other}.
55 *
56 * Warning: Use with caution! Usually equivalence {@link #equals(Object)} is sufficient and
57 * should be used.
58 */
59 @ExcludeFromIdentityComparisonVerification
60 default boolean identityEquals(Value other) {
61 return this == other;
62 }
63 }