Mercurial > hg > graal-jvmci-8
annotate graal/Compiler/src/com/sun/c1x/ir/LoadIndexed.java @ 2507:9ec15d6914ca
Pull over of compiler from maxine repository.
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Wed, 27 Apr 2011 11:43:22 +0200 |
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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.debug.*; |
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26 import com.sun.c1x.value.*; |
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27 import com.sun.cri.ci.*; |
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28 import com.sun.cri.ri.*; |
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29 |
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30 /** |
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31 * The {@code LoadIndexed} instruction represents a read from an element of an array. |
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32 * |
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33 * @author Ben L. Titzer |
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34 */ |
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35 public final class LoadIndexed extends AccessIndexed { |
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36 |
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37 /** |
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38 * Creates a new LoadIndexed instruction. |
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39 * @param array the instruction producing the array |
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40 * @param index the instruction producing the index |
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41 * @param length the instruction producing the length |
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42 * @param elementType the element type |
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43 * @param stateBefore the state before executing this instruction |
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44 */ |
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45 public LoadIndexed(Value array, Value index, Value length, CiKind elementType, FrameState stateBefore) { |
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46 super(elementType.stackKind(), array, index, length, elementType, stateBefore); |
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47 } |
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48 |
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49 /** |
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50 * Gets the declared type of this instruction's result. |
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51 * @return the declared type |
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52 */ |
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53 @Override |
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54 public RiType declaredType() { |
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55 RiType arrayType = array().declaredType(); |
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56 if (arrayType == null) { |
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57 return null; |
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58 } |
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59 return arrayType.componentType(); |
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60 } |
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61 |
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62 /** |
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63 * Gets the exact type of this instruction's result. |
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64 * @return the exact type |
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65 */ |
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66 @Override |
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67 public RiType exactType() { |
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68 RiType declared = declaredType(); |
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69 return declared != null && declared.isResolved() ? declared.exactType() : null; |
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70 } |
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71 |
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72 @Override |
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73 public void accept(ValueVisitor v) { |
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74 v.visitLoadIndexed(this); |
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75 } |
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76 |
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77 @Override |
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78 public void print(LogStream out) { |
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79 out.print(array()).print('[').print(index()).print("] (").print(kind.typeChar).print(')'); |
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80 } |
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81 } |