Mercurial > hg > graal-jvmci-8
annotate graal/GraalCompiler/src/com/sun/c1x/ir/Op2.java @ 2585:3e0e65161345
new node layout: Op2
author | Lukas Stadler <lukas.stadler@jku.at> |
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date | Thu, 05 May 2011 14:12:19 +0200 |
parents | 16b9a8b5ad39 |
children | 421da5f53b5e |
rev | line source |
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1 /* |
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2 * Copyright (c) 2009, 2011, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 */ |
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23 package com.sun.c1x.ir; |
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24 |
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25 import com.sun.c1x.util.*; |
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26 import com.sun.cri.bytecode.*; |
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27 import com.sun.cri.ci.*; |
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28 |
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29 /** |
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30 * The {@code Op2} class is the base of arithmetic and logic operations with two inputs. |
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31 * |
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32 * @author Ben L. Titzer |
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33 */ |
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34 public abstract class Op2 extends Instruction { |
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35 |
2585 | 36 private static final int INPUT_COUNT = 2; |
37 private static final int INPUT_X = 0; | |
38 private static final int INPUT_Y = 1; | |
39 | |
40 private static final int SUCCESSOR_COUNT = 0; | |
41 | |
42 @Override | |
43 protected int inputCount() { | |
44 return super.inputCount() + INPUT_COUNT; | |
45 } | |
46 | |
47 @Override | |
48 protected int successorCount() { | |
49 return super.successorCount() + SUCCESSOR_COUNT; | |
50 } | |
51 | |
52 /** | |
53 * The first input to this instruction | |
54 */ | |
55 public Value x() { | |
56 return (Value) inputs().get(super.inputCount() + INPUT_X); | |
57 } | |
58 | |
59 public Value setX(Value n) { | |
60 return (Value) inputs().set(super.inputCount() + INPUT_X, n); | |
61 } | |
62 | |
63 /** | |
64 * The second input to this instruction | |
65 */ | |
66 public Value y() { | |
67 return (Value) inputs().get(super.inputCount() + INPUT_Y); | |
68 } | |
69 | |
70 public Value setY(Value n) { | |
71 return (Value) inputs().set(super.inputCount() + INPUT_Y, n); | |
72 } | |
73 | |
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74 /** |
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75 * The opcode of this instruction. |
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76 */ |
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77 public final int opcode; |
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78 |
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79 /** |
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80 * Creates a new Op2 instance. |
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81 * @param kind the result type of this instruction |
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82 * @param opcode the bytecode opcode |
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83 * @param x the first input instruction |
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84 * @param y the second input instruction |
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85 */ |
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86 public Op2(CiKind kind, int opcode, Value x, Value y) { |
2585 | 87 super(kind, INPUT_COUNT, SUCCESSOR_COUNT, null); |
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88 this.opcode = opcode; |
2585 | 89 setX(x); |
90 setY(y); | |
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91 } |
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92 |
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93 /** |
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94 * Swaps the operands of this instruction. This is only legal for commutative operations. |
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95 */ |
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96 public void swapOperands() { |
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97 assert Bytecodes.isCommutative(opcode); |
2585 | 98 Value t = x(); |
99 setX(y()); | |
100 setY(t); | |
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101 } |
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102 |
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103 /** |
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104 * Iterates over the inputs to this instruction. |
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105 * @param closure the closure to apply to each input value |
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106 */ |
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107 @Override |
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108 public void inputValuesDo(ValueClosure closure) { |
2585 | 109 setX(closure.apply(x())); |
110 setY(closure.apply(y())); | |
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111 } |
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112 |
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113 @Override |
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114 public int valueNumber() { |
2585 | 115 return Util.hash2(opcode, x(), y()); |
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116 } |
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117 |
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118 @Override |
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119 public boolean valueEqual(Instruction i) { |
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120 if (i instanceof Op2) { |
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121 Op2 o = (Op2) i; |
2585 | 122 return opcode == o.opcode && x() == o.x() && y() == o.y(); |
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123 } |
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124 return false; |
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125 } |
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126 } |