Mercurial > hg > graal-compiler
annotate graal/GraalCompiler/src/com/sun/c1x/ir/TypeCheck.java @ 2741:a3cd5eb68837
more GraphBuilder cleanup, moved mergeOrClone to GraphBuilder
author | Lukas Stadler <lukas.stadler@jku.at> |
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date | Fri, 20 May 2011 11:11:33 +0200 |
parents | 91d3952f7eb7 |
children | f9f40748442f |
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.oracle.graal.graph.*; |
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26 import com.sun.cri.ci.*; |
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27 import com.sun.cri.ri.*; |
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28 |
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29 /** |
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30 * The {@code TypeCheck} instruction is the base class of casts and instanceof tests. |
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31 */ |
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32 public abstract class TypeCheck extends Instruction { |
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33 |
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34 private static final int INPUT_COUNT = 2; |
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35 private static final int INPUT_OBJECT = 0; |
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36 private static final int INPUT_TARGET_CLASS_INSTRUCTION = 1; |
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37 |
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38 private static final int SUCCESSOR_COUNT = 0; |
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39 |
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40 @Override |
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41 protected int inputCount() { |
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42 return super.inputCount() + INPUT_COUNT; |
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43 } |
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44 |
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45 @Override |
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46 protected int successorCount() { |
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47 return super.successorCount() + SUCCESSOR_COUNT; |
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48 } |
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49 |
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50 /** |
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51 * The instruction which produces the object input. |
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52 */ |
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53 public Value object() { |
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54 return (Value) inputs().get(super.inputCount() + INPUT_OBJECT); |
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55 } |
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56 |
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57 public Value setObject(Value n) { |
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58 return (Value) inputs().set(super.inputCount() + INPUT_OBJECT, n); |
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59 } |
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60 |
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61 /** |
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62 * The instruction that loads the target class object that is used by this checkcast. |
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63 */ |
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64 public Value targetClassInstruction() { |
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65 return (Value) inputs().get(super.inputCount() + INPUT_TARGET_CLASS_INSTRUCTION); |
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66 } |
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67 |
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68 public Value setTargetClassInstruction(Value n) { |
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69 return (Value) inputs().set(super.inputCount() + INPUT_TARGET_CLASS_INSTRUCTION, n); |
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70 } |
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71 |
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72 final RiType targetClass; |
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73 |
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74 /** |
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75 * Creates a new TypeCheck instruction. |
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76 * @param targetClass the class which is being casted to or checked against |
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77 * @param object the instruction which produces the object |
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78 * @param kind the result type of this instruction |
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79 * @param stateBefore the state before this instruction is executed |
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80 * @param inputCount |
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81 * @param successorCount |
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82 * @param graph |
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83 */ |
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84 public TypeCheck(RiType targetClass, Value targetClassInstruction, Value object, CiKind kind, int inputCount, int successorCount, Graph graph) { |
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85 super(kind, inputCount + INPUT_COUNT, successorCount + SUCCESSOR_COUNT, graph); |
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86 this.targetClass = targetClass; |
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87 setObject(object); |
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88 setTargetClassInstruction(targetClassInstruction); |
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89 } |
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90 |
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91 /** |
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92 * Gets the target class, i.e. the class being cast to, or the class being tested against. |
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93 * @return the target class |
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94 */ |
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95 public RiType targetClass() { |
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96 return targetClass; |
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97 } |
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98 |
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99 /** |
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100 * Checks whether the target class of this instruction is loaded. |
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101 * @return {@code true} if the target class is loaded |
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102 */ |
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103 public boolean isLoaded() { |
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104 return targetClass != null; |
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105 } |
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106 |
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107 } |