Mercurial > hg > graal-compiler
annotate graal/GraalCompiler/src/com/sun/c1x/ir/AccessField.java @ 2672:35453d725a2a
Add a BailoutOnException option on C1X to be able to tell expected exceptions (bailouts on jsr etc.) appart from true/unexpected exceptions
author | Gilles Duboscq <gilles.duboscq@oracle.com> |
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date | Thu, 12 May 2011 17:57:58 +0200 |
parents | 569228710be8 |
children | bd17ac598c6e |
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 java.lang.reflect.*; |
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26 |
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27 import com.oracle.graal.graph.*; |
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28 import com.sun.cri.ci.*; |
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29 import com.sun.cri.ri.*; |
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30 |
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31 /** |
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32 * The base class of all instructions that access fields. |
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33 */ |
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34 public abstract class AccessField extends StateSplit { |
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35 |
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36 private static final int INPUT_COUNT = 1; |
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37 private static final int INPUT_OBJECT = 0; |
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38 |
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39 private static final int SUCCESSOR_COUNT = 0; |
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40 |
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41 @Override |
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42 protected int inputCount() { |
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43 return super.inputCount() + INPUT_COUNT; |
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44 } |
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45 |
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46 @Override |
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47 protected int successorCount() { |
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48 return super.successorCount() + SUCCESSOR_COUNT; |
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49 } |
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50 |
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51 /** |
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52 * The instruction that produces the receiver object of this field access (for instance field accesses). |
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53 */ |
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54 public Value object() { |
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55 return (Value) inputs().get(super.inputCount() + INPUT_OBJECT); |
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56 } |
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57 |
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58 public Value setObject(Value n) { |
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59 return (Value) inputs().set(super.inputCount() + INPUT_OBJECT, n); |
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60 } |
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61 |
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62 protected final RiField field; |
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63 |
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64 /** |
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65 * Constructs a new access field object. |
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66 * @param kind the result kind of the access |
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67 * @param object the instruction producing the receiver object |
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68 * @param field the compiler interface representation of the field |
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69 * @param stateBefore the state before the field access |
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70 * @param inputCount |
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71 * @param successorCount |
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72 * @param graph |
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73 */ |
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74 public AccessField(CiKind kind, Value object, RiField field, int inputCount, int successorCount, Graph graph) { |
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75 super(kind, inputCount + INPUT_COUNT, successorCount + SUCCESSOR_COUNT, graph); |
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76 assert object != null : "every field access must reference some object"; |
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77 this.field = field; |
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78 setObject(object); |
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79 } |
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80 |
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81 /** |
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82 * Gets the compiler interface field for this field access. |
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83 * @return the compiler interface field for this field access |
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84 */ |
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85 public RiField field() { |
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86 return field; |
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87 } |
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88 |
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89 /** |
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90 * Checks whether this field access is an access to a static field. |
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91 * @return {@code true} if this field access is to a static field |
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92 */ |
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93 public boolean isStatic() { |
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94 return Modifier.isStatic(field.accessFlags()); |
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95 } |
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96 |
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97 /** |
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98 * Checks whether the class of the field of this access is loaded. |
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99 * @return {@code true} if the class is loaded |
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100 */ |
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101 public boolean isLoaded() { |
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102 return field.isResolved(); |
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103 } |
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104 |
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105 /** |
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106 * Checks whether this field is declared volatile. |
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107 * @return {@code true} if the field is resolved and declared volatile |
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108 */ |
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109 public boolean isVolatile() { |
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110 return isLoaded() && Modifier.isVolatile(field.accessFlags()); |
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111 } |
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112 } |