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comparison graal/GraalCompiler/src/com/sun/c1x/ir/NegateOp.java @ 2509:16b9a8b5ad39

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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/ir/NegateOp.java@9ec15d6914ca
children 51ebe5f0516f
comparison
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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.ir;
24
25 import com.sun.c1x.debug.*;
26 import com.sun.c1x.util.*;
27 import com.sun.cri.bytecode.*;
28
29 /**
30 * The {@code NegateOp} instruction negates its operand.
31 *
32 * @author Ben L. Titzer
33 */
34 public final class NegateOp extends Instruction {
35
36 Value x;
37
38 /**
39 * Creates new NegateOp instance.
40 * @param x the instruction producing the value that is input to this instruction
41 */
42 public NegateOp(Value x) {
43 super(x.kind);
44 this.x = x;
45 }
46
47 /**
48 * Gets the instruction producing input to this instruction.
49 * @return the instruction that produces this instruction's input
50 */
51 public Value x() {
52 return x;
53 }
54
55 @Override
56 public void inputValuesDo(ValueClosure closure) {
57 x = closure.apply(x);
58 }
59
60 @Override
61 public void accept(ValueVisitor v) {
62 v.visitNegateOp(this);
63 }
64
65 @Override
66 public int valueNumber() {
67 return Util.hash1(Bytecodes.INEG, x);
68 }
69
70 @Override
71 public boolean valueEqual(Instruction i) {
72 if (i instanceof NegateOp) {
73 NegateOp o = (NegateOp) i;
74 return x == o.x;
75 }
76 return false;
77 }
78
79 @Override
80 public void print(LogStream out) {
81 out.print("- ").print(x());
82 }
83 }