Mercurial > hg > graal-compiler
comparison graal/GraalCompiler/src/com/sun/c1x/ir/Op2.java @ 2509:16b9a8b5ad39
Renamings Runtime=>GraalRuntime and Compiler=>GraalCompiler
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Wed, 27 Apr 2011 11:50:44 +0200 |
parents | graal/Compiler/src/com/sun/c1x/ir/Op2.java@9ec15d6914ca |
children | 3e0e65161345 |
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2508:fea94949e0a2 | 2509:16b9a8b5ad39 |
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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.ir; | |
24 | |
25 import com.sun.c1x.util.*; | |
26 import com.sun.cri.bytecode.*; | |
27 import com.sun.cri.ci.*; | |
28 | |
29 /** | |
30 * The {@code Op2} class is the base of arithmetic and logic operations with two inputs. | |
31 * | |
32 * @author Ben L. Titzer | |
33 */ | |
34 public abstract class Op2 extends Instruction { | |
35 | |
36 /** | |
37 * The opcode of this instruction. | |
38 */ | |
39 public final int opcode; | |
40 | |
41 Value x; | |
42 Value y; | |
43 | |
44 /** | |
45 * Creates a new Op2 instance. | |
46 * @param kind the result type of this instruction | |
47 * @param opcode the bytecode opcode | |
48 * @param x the first input instruction | |
49 * @param y the second input instruction | |
50 */ | |
51 public Op2(CiKind kind, int opcode, Value x, Value y) { | |
52 super(kind); | |
53 this.opcode = opcode; | |
54 this.x = x; | |
55 this.y = y; | |
56 } | |
57 | |
58 /** | |
59 * Gets the first input to this instruction. | |
60 * @return the first input to this instruction | |
61 */ | |
62 public final Value x() { | |
63 return x; | |
64 } | |
65 | |
66 /** | |
67 * Gets the second input to this instruction. | |
68 * @return the second input to this instruction | |
69 */ | |
70 public final Value y() { | |
71 return y; | |
72 } | |
73 | |
74 /** | |
75 * Swaps the operands of this instruction. This is only legal for commutative operations. | |
76 */ | |
77 public void swapOperands() { | |
78 assert Bytecodes.isCommutative(opcode); | |
79 Value t = x; | |
80 x = y; | |
81 y = t; | |
82 } | |
83 | |
84 /** | |
85 * Iterates over the inputs to this instruction. | |
86 * @param closure the closure to apply to each input value | |
87 */ | |
88 @Override | |
89 public void inputValuesDo(ValueClosure closure) { | |
90 x = closure.apply(x); | |
91 y = closure.apply(y); | |
92 } | |
93 | |
94 @Override | |
95 public int valueNumber() { | |
96 return Util.hash2(opcode, x, y); | |
97 } | |
98 | |
99 @Override | |
100 public boolean valueEqual(Instruction i) { | |
101 if (i instanceof Op2) { | |
102 Op2 o = (Op2) i; | |
103 return opcode == o.opcode && x == o.x && y == o.y; | |
104 } | |
105 return false; | |
106 } | |
107 } |