Mercurial > hg > graal-jvmci-8

comparison graal/GraalCompiler/src/com/sun/c1x/lir/LIRCompareAndSwap.java @ 2509:16b9a8b5ad39

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Renamings Runtime=>GraalRuntime and Compiler=>GraalCompiler
author Thomas Wuerthinger <thomas@wuerthinger.net>
date Wed, 27 Apr 2011 11:50:44 +0200
parents graal/Compiler/src/com/sun/c1x/lir/LIRCompareAndSwap.java@9ec15d6914ca
children
comparison
equal deleted inserted replaced
2508:fea94949e0a2 2509:16b9a8b5ad39
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 }