Mercurial > hg > truffle
annotate graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/NewInstanceNode.java @ 9251:435bb9425124
added enum to Lowerable interface (before/after guard lowering)
author | Lukas Stadler <lukas.stadler@jku.at> |
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date | Tue, 23 Apr 2013 15:19:53 +0200 |
parents | 2d1b0b20f89d |
children | 394f1232d563 |
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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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24 |
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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 import com.oracle.graal.nodes.virtual.*; |
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31 |
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32 /** |
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33 * The {@code NewInstanceNode} represents the allocation of an instance class object. |
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34 */ |
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35 @NodeInfo(nameTemplate = "New {p#instanceClass/s}") |
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36 public final class NewInstanceNode extends FixedWithNextNode implements Node.IterableNodeType, Canonicalizable, Lowerable, VirtualizableAllocation { |
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37 |
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38 private final ResolvedJavaType instanceClass; |
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39 private final boolean fillContents; |
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40 private final boolean locked; |
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41 |
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42 /** |
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43 * Constructs a NewInstanceNode. |
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44 * |
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45 * @param type the class being allocated |
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46 * @param fillContents determines whether the new object's fields should be initialized to |
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47 * zero/null. |
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48 * @param locked determines whether the new object should be locked immediately. |
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49 */ |
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50 public NewInstanceNode(ResolvedJavaType type, boolean fillContents, boolean locked) { |
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51 super(StampFactory.exactNonNull(type)); |
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52 this.instanceClass = type; |
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53 this.fillContents = fillContents; |
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54 this.locked = locked; |
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55 } |
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56 |
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57 /** |
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58 * Gets the instance class being allocated by this node. |
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59 * |
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60 * @return the instance class allocated |
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61 */ |
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62 public ResolvedJavaType instanceClass() { |
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63 return instanceClass; |
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64 } |
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65 |
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66 /** |
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67 * @return <code>true</code> if the fields of the new object will be initialized. |
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68 */ |
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69 public boolean fillContents() { |
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70 return fillContents; |
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71 } |
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72 |
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73 /** |
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74 * @return <code>true</code> if the new object will be locked immediately. |
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75 */ |
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76 public boolean locked() { |
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77 return locked; |
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78 } |
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79 |
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80 @Override |
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81 public ValueNode canonical(CanonicalizerTool tool) { |
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82 if (usages().isEmpty()) { |
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83 return null; |
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84 } else { |
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85 return this; |
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86 } |
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87 } |
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88 |
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89 @Override |
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90 public void lower(LoweringTool tool, LoweringType loweringType) { |
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91 tool.getRuntime().lower(this, tool); |
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92 } |
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93 |
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94 @Override |
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95 public void virtualize(VirtualizerTool tool) { |
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96 if (instanceClass != null) { |
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97 assert !instanceClass().isArray(); |
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98 VirtualInstanceNode virtualObject = new VirtualInstanceNode(instanceClass()); |
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99 ResolvedJavaField[] fields = virtualObject.getFields(); |
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100 ValueNode[] state = new ValueNode[fields.length]; |
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101 for (int i = 0; i < state.length; i++) { |
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102 state[i] = ConstantNode.defaultForKind(fields[i].getType().getKind(), graph()); |
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103 } |
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104 tool.createVirtualObject(virtualObject, state, 0); |
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105 tool.replaceWithVirtual(virtualObject); |
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106 } |
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107 } |
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108 } |