Mercurial > hg > graal-jvmci-8
comparison graal/Compiler/src/com/sun/c1x/lir/LIRCompareAndSwap.java @ 2507:9ec15d6914ca
Pull over of compiler from maxine repository.
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Wed, 27 Apr 2011 11:43:22 +0200 |
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2506:4a3bf8a5bf41 | 2507:9ec15d6914ca |
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1 /* | |
2 * Copyright (c) 2009, 2011, 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.sun.c1x.lir; | |
24 | |
25 import com.sun.cri.ci.*; | |
26 | |
27 /** | |
28 * The {@code LIRCompareAndSwap} class definition. | |
29 * | |
30 * @author Marcelo Cintra | |
31 * | |
32 */ | |
33 public class LIRCompareAndSwap extends LIRInstruction { | |
34 | |
35 /** | |
36 * Constructs a new LIRCompareAndSwap instruction. | |
37 * @param addr | |
38 * @param expectedValue | |
39 * @param newValue | |
40 */ | |
41 public LIRCompareAndSwap(LIROpcode opcode, CiValue addr, CiValue expectedValue, CiValue newValue) { | |
42 super(opcode, CiValue.IllegalValue, null, false, 0, 0, addr, expectedValue, newValue); | |
43 } | |
44 | |
45 /** | |
46 * Gets the address of compare and swap. | |
47 * | |
48 * @return the address | |
49 */ | |
50 public CiValue address() { | |
51 return operand(0); | |
52 } | |
53 | |
54 /** | |
55 * Gets the cmpValue of this class. | |
56 * | |
57 * @return the cmpValue | |
58 */ | |
59 public CiValue expectedValue() { | |
60 return operand(1); | |
61 } | |
62 | |
63 /** | |
64 * Gets the newValue of this class. | |
65 * | |
66 * @return the newValue | |
67 */ | |
68 public CiValue newValue() { | |
69 return operand(2); | |
70 } | |
71 | |
72 /** | |
73 * Emits target assembly code for this instruction. | |
74 * | |
75 * @param masm the target assembler | |
76 */ | |
77 @Override | |
78 public void emitCode(LIRAssembler masm) { | |
79 masm.emitCompareAndSwap(this); | |
80 } | |
81 } |