Mercurial > hg > graal-jvmci-8
annotate graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/ObjectCloneNode.java @ 19306:a0a760b0fb5f
pulled method evolution dependencies out of Assumptions and directly into StructuredGraph
author | Doug Simon <doug.simon@oracle.com> |
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date | Thu, 12 Feb 2015 01:54:05 +0100 |
parents | 8ab925a6f724 |
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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 |
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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.code.*; |
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30 import com.oracle.graal.api.meta.*; |
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31 import com.oracle.graal.debug.*; |
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32 import com.oracle.graal.debug.Debug.Scope; |
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33 import com.oracle.graal.nodeinfo.*; |
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34 import com.oracle.graal.nodes.*; |
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35 import com.oracle.graal.nodes.StructuredGraph.AllowAssumptions; |
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36 import com.oracle.graal.nodes.java.*; |
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37 import com.oracle.graal.nodes.spi.*; |
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38 import com.oracle.graal.nodes.type.*; |
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39 import com.oracle.graal.replacements.nodes.*; |
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40 |
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41 @NodeInfo |
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42 public class ObjectCloneNode extends BasicObjectCloneNode implements VirtualizableAllocation, ArrayLengthProvider { |
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43 |
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44 public ObjectCloneNode(Invoke invoke) { |
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45 super(invoke); |
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46 } |
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47 |
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48 @Override |
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49 protected StructuredGraph getLoweredSnippetGraph(LoweringTool tool) { |
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50 if (!shouldIntrinsify(getTargetMethod())) { |
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51 return null; |
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52 } |
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53 |
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54 ResolvedJavaType type = StampTool.typeOrNull(getObject()); |
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55 if (type != null) { |
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56 if (type.isArray()) { |
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57 Method method = ObjectCloneSnippets.arrayCloneMethods.get(type.getComponentType().getKind()); |
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58 if (method != null) { |
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59 final ResolvedJavaMethod snippetMethod = tool.getMetaAccess().lookupJavaMethod(method); |
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60 final Replacements replacements = tool.getReplacements(); |
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61 StructuredGraph snippetGraph = null; |
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62 try (Scope s = Debug.scope("ArrayCopySnippet", snippetMethod)) { |
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63 snippetGraph = replacements.getSnippet(snippetMethod); |
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64 } catch (Throwable e) { |
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65 throw Debug.handle(e); |
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66 } |
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67 |
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68 assert snippetGraph != null : "ObjectCloneSnippets should be installed"; |
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69 return lowerReplacement(snippetGraph.copy(), tool); |
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70 } |
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71 assert false : "unhandled array type " + type.getComponentType().getKind(); |
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72 } else { |
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73 Assumptions assumptions = graph().getAssumptions(); |
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74 type = getConcreteType(getObject().stamp(), assumptions, tool.getMetaAccess()); |
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75 if (type != null) { |
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76 StructuredGraph newGraph = new StructuredGraph(AllowAssumptions.from(assumptions != null)); |
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77 ParameterNode param = newGraph.unique(new ParameterNode(0, getObject().stamp())); |
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78 NewInstanceNode newInstance = newGraph.add(new NewInstanceNode(type, true)); |
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79 newGraph.addAfterFixed(newGraph.start(), newInstance); |
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80 ReturnNode returnNode = newGraph.add(new ReturnNode(newInstance)); |
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81 newGraph.addAfterFixed(newInstance, returnNode); |
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82 |
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83 for (ResolvedJavaField field : type.getInstanceFields(true)) { |
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84 LoadFieldNode load = newGraph.add(new LoadFieldNode(param, field)); |
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85 newGraph.addBeforeFixed(returnNode, load); |
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86 newGraph.addBeforeFixed(returnNode, newGraph.add(new StoreFieldNode(newInstance, field, load))); |
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87 } |
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88 return lowerReplacement(newGraph, tool); |
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89 } |
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90 } |
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91 } |
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92 return null; |
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93 } |
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94 } |