Mercurial > hg > graal-compiler
annotate graal/GraalCompiler/src/com/sun/c1x/ir/StoreIndexed.java @ 2522:58c05e4c51e2
Removing two more HIR instructions.
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Wed, 27 Apr 2011 16:43:31 +0200 |
parents | 16b9a8b5ad39 |
children | fa3bda50cbfd |
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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 static com.sun.c1x.ir.Value.Flag.*; |
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26 |
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27 import com.sun.c1x.debug.*; |
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28 import com.sun.c1x.value.*; |
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29 import com.sun.cri.ci.*; |
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30 |
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31 /** |
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32 * The {@code StoreIndexed} instruction represents a write to an array element. |
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33 * |
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34 * @author Ben L. Titzer |
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35 */ |
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36 public final class StoreIndexed extends AccessIndexed { |
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37 |
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38 /** |
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39 * The value to store. |
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40 */ |
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41 Value value; |
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42 |
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43 /** |
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44 * Creates a new StoreIndexed instruction. |
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45 * @param array the instruction producing the array |
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46 * @param index the instruction producing the index |
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47 * @param length the instruction producing the length |
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48 * @param elementType the element type |
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49 * @param value the value to store into the array |
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50 * @param stateBefore the state before executing this instruction |
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51 */ |
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52 public StoreIndexed(Value array, Value index, Value length, CiKind elementType, Value value, FrameState stateBefore) { |
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53 super(CiKind.Void, array, index, length, elementType, stateBefore); |
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54 this.value = value; |
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55 setFlag(Flag.LiveStore); |
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56 if (elementType != CiKind.Object) { |
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57 setFlag(Flag.NoWriteBarrier); |
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58 } |
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59 } |
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60 |
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61 /** |
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62 * Gets the instruction that produces the value that is to be stored into the array. |
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63 * @return the value to write into the array |
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64 */ |
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65 public Value value() { |
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66 return value; |
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67 } |
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68 |
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69 /** |
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70 * Checks if this instruction needs a write barrier. |
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71 * @return {@code true} if this instruction needs a write barrier |
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72 */ |
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73 public boolean needsWriteBarrier() { |
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74 return !checkFlag(Flag.NoWriteBarrier); |
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75 } |
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76 |
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77 /** |
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78 * Checks if this instruction needs a store check. |
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79 * @return {@code true} if this instruction needs a store check |
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80 */ |
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81 public boolean needsStoreCheck() { |
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82 return !checkFlag(Flag.NoStoreCheck); |
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83 } |
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84 |
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85 public void eliminateStoreCheck() { |
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86 clearRuntimeCheck(NoStoreCheck); |
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87 } |
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88 |
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89 /** |
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90 * Checks whether this instruction can cause a trap. |
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91 * @return {@code true} if this instruction can cause a trap |
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92 */ |
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93 @Override |
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94 public boolean canTrap() { |
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95 return super.canTrap() || needsStoreCheck(); |
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96 } |
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97 |
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98 @Override |
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99 public void inputValuesDo(ValueClosure closure) { |
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100 super.inputValuesDo(closure); |
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101 value = closure.apply(value); |
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102 } |
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103 |
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104 @Override |
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105 public void accept(ValueVisitor v) { |
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106 v.visitStoreIndexed(this); |
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107 } |
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108 |
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109 @Override |
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110 public void print(LogStream out) { |
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111 out.print(array()).print('[').print(index()).print("] := ").print(value()).print(" (").print(kind.typeChar).print(')'); |
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112 } |
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113 } |