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annotate graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/ObjectCloneNode.java @ 18845:f57d86eb036f

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removed Node factory methods
author Doug Simon <doug.simon@oracle.com>
date Mon, 12 Jan 2015 20:39:04 +0100
parents 45b45f902bed
children 8ab925a6f724
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cff55cdeea48 implement Object.clone snippets and macro node
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1 /*
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2 * Copyright (c) 2013, 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
cff55cdeea48 implement Object.clone snippets and macro node
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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.hotspot.replacements;
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24
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25 import static com.oracle.graal.compiler.GraalCompiler.*;
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26
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27 import java.lang.reflect.*;
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28
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29 import com.oracle.graal.api.meta.*;
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30 import com.oracle.graal.debug.*;
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31 import com.oracle.graal.debug.Debug.Scope;
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32 import com.oracle.graal.nodeinfo.*;
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33 import com.oracle.graal.nodes.*;
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34 import com.oracle.graal.nodes.java.*;
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35 import com.oracle.graal.nodes.spi.*;
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36 import com.oracle.graal.nodes.type.*;
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37 import com.oracle.graal.replacements.nodes.*;
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38
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39 @NodeInfo
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40 public class ObjectCloneNode extends BasicObjectCloneNode implements VirtualizableAllocation, ArrayLengthProvider {
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41
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42 public ObjectCloneNode(Invoke invoke) {
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43 super(invoke);
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44 }
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45
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46 @Override
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47 protected StructuredGraph getLoweredSnippetGraph(LoweringTool tool) {
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48 if (!shouldIntrinsify(getTargetMethod())) {
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49 return null;
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50 }
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51
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52 ResolvedJavaType type = StampTool.typeOrNull(getObject());
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53 if (type != null) {
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54 if (type.isArray()) {
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55 Method method = ObjectCloneSnippets.arrayCloneMethods.get(type.getComponentType().getKind());
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56 if (method != null) {
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57 final ResolvedJavaMethod snippetMethod = tool.getMetaAccess().lookupJavaMethod(method);
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58 final Replacements replacements = tool.getReplacements();
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59 StructuredGraph snippetGraph = null;
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60 try (Scope s = Debug.scope("ArrayCopySnippet", snippetMethod)) {
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61 snippetGraph = replacements.getSnippet(snippetMethod);
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62 } catch (Throwable e) {
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63 throw Debug.handle(e);
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64 }
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65
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66 assert snippetGraph != null : "ObjectCloneSnippets should be installed";
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67 return lowerReplacement(snippetGraph.copy(), tool);
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68 }
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69 assert false : "unhandled array type " + type.getComponentType().getKind();
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70 } else {
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71 type = getConcreteType(getObject().stamp(), tool.assumptions(), tool.getMetaAccess());
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72 if (type != null) {
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73 StructuredGraph newGraph = new StructuredGraph();
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74 ParameterNode param = newGraph.unique(new ParameterNode(0, getObject().stamp()));
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75 NewInstanceNode newInstance = newGraph.add(new NewInstanceNode(type, true));
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76 newGraph.addAfterFixed(newGraph.start(), newInstance);
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77 ReturnNode returnNode = newGraph.add(new ReturnNode(newInstance));
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78 newGraph.addAfterFixed(newInstance, returnNode);
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79
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80 for (ResolvedJavaField field : type.getInstanceFields(true)) {
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81 LoadFieldNode load = newGraph.add(new LoadFieldNode(param, field));
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82 newGraph.addBeforeFixed(returnNode, load);
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83 newGraph.addBeforeFixed(returnNode, newGraph.add(new StoreFieldNode(newInstance, field, load)));
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84 }
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85 return lowerReplacement(newGraph, tool);
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86 }
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87 }
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88 }
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89 return null;
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90 }
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91 }