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annotate graal/GraalCompiler/src/com/sun/c1x/ir/LoadIndexed.java @ 2592:fec99fc30af1

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checkstyle fixes, updated AccessArray + subclasses
author Lukas Stadler <lukas.stadler@jku.at>
date Thu, 05 May 2011 15:23:07 +0200
parents 16b9a8b5ad39
children 092e628ddd5d
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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.c1x.debug.*;
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27 import com.sun.c1x.value.*;
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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 {@code LoadIndexed} instruction represents a read from an element of an array.
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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 LoadIndexed extends AccessIndexed {
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37
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38 private static final int INPUT_COUNT = 0;
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39 private static final int SUCCESSOR_COUNT = 0;
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40
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41 /**
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42 * Creates a new LoadIndexed instruction.
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43 * @param array the instruction producing the array
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44 * @param index the instruction producing the index
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45 * @param length the instruction producing the length
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46 * @param elementType the element type
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47 * @param stateBefore the state before executing this instruction
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48 * @param graph
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49 */
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50 public LoadIndexed(Value array, Value index, Value length, CiKind elementType, FrameState stateBefore, Graph graph) {
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51 super(elementType.stackKind(), array, index, length, elementType, stateBefore, INPUT_COUNT, SUCCESSOR_COUNT, graph);
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52 }
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53
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54 /**
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55 * Gets the declared type of this instruction's result.
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56 * @return the declared type
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57 */
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58 @Override
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59 public RiType declaredType() {
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60 RiType arrayType = array().declaredType();
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61 if (arrayType == null) {
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62 return null;
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63 }
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64 return arrayType.componentType();
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65 }
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66
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67 /**
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68 * Gets the exact type of this instruction's result.
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69 * @return the exact type
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70 */
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71 @Override
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72 public RiType exactType() {
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73 RiType declared = declaredType();
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74 return declared != null && declared.isResolved() ? declared.exactType() : null;
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75 }
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76
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77 @Override
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78 public void accept(ValueVisitor v) {
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79 v.visitLoadIndexed(this);
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80 }
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81
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82 @Override
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83 public void print(LogStream out) {
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84 out.print(array()).print('[').print(index()).print("] (").print(kind.typeChar).print(')');
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85 }
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86 }