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annotate graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/NewMultiArrayNode.java @ 13921:eb48fac53e6f

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Make NewMultiArrayNode a ArrayLengthProvider so that it can provide the length of its first dimension
author Gilles Duboscq <duboscq@ssw.jku.at>
date Mon, 10 Feb 2014 16:13:21 +0100
parents 0fc653a9e019
children c0309792b0cd
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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.oracle.graal.nodes.java;
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25 import com.oracle.graal.api.meta.*;
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26 import com.oracle.graal.graph.*;
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27 import com.oracle.graal.nodes.*;
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28 import com.oracle.graal.nodes.spi.*;
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29 import com.oracle.graal.nodes.type.*;
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30
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31 /**
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32 * The {@code NewMultiArrayNode} represents an allocation of a multi-dimensional object array.
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33 */
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34 public final class NewMultiArrayNode extends DeoptimizingFixedWithNextNode implements Lowerable, ArrayLengthProvider {
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35
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36 @Input private final NodeInputList<ValueNode> dimensions;
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37 private final ResolvedJavaType type;
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38
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39 public ValueNode dimension(int index) {
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40 return dimensions.get(index);
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41 }
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42
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43 public int dimensionCount() {
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44 return dimensions.size();
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45 }
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46
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47 public NodeList<ValueNode> dimensions() {
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48 return dimensions;
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49 }
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50
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51 /**
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52 * Constructs a new NewMultiArrayNode.
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53 *
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54 * @param type the element type of the array
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55 * @param dimensions the node which produce the dimensions for this array
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56 */
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57 public NewMultiArrayNode(ResolvedJavaType type, ValueNode[] dimensions) {
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58 super(StampFactory.exactNonNull(type));
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59 this.type = type;
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60 this.dimensions = new NodeInputList<>(this, dimensions);
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61 assert dimensions.length > 0 && type.isArray();
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62 }
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63
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64 @Override
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65 public void lower(LoweringTool tool) {
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66 tool.getLowerer().lower(this, tool);
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67 }
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68
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69 public ResolvedJavaType type() {
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70 return type;
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71 }
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72
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73 @Override
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74 public boolean canDeoptimize() {
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75 return true;
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76 }
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77
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78 public ValueNode length() {
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79 return dimension(0);
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80 }
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81 }