1 /* 2 * Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 package org.graalvm.compiler.hotspot.replacements; 24 25 import static org.graalvm.compiler.core.common.CompilationIdentifier.INVALID_COMPILATION_ID; 26 27 import java.lang.reflect.Method; 28 29 import org.graalvm.compiler.core.common.type.StampPair; 30 import org.graalvm.compiler.debug.Debug; 31 import org.graalvm.compiler.debug.Debug.Scope; 32 import org.graalvm.compiler.graph.NodeClass; 33 import org.graalvm.compiler.nodeinfo.NodeInfo; 34 import org.graalvm.compiler.nodes.CallTargetNode.InvokeKind; 35 import org.graalvm.compiler.nodes.ParameterNode; 36 import org.graalvm.compiler.nodes.ReturnNode; 37 import org.graalvm.compiler.nodes.StructuredGraph; 38 import org.graalvm.compiler.nodes.StructuredGraph.AllowAssumptions; 39 import org.graalvm.compiler.nodes.ValueNode; 40 import org.graalvm.compiler.nodes.java.LoadFieldNode; 41 import org.graalvm.compiler.nodes.java.NewInstanceNode; 42 import org.graalvm.compiler.nodes.java.StoreFieldNode; 43 import org.graalvm.compiler.nodes.spi.ArrayLengthProvider; 44 import org.graalvm.compiler.nodes.spi.LoweringTool; 45 import org.graalvm.compiler.nodes.spi.Replacements; 46 import org.graalvm.compiler.nodes.spi.VirtualizableAllocation; 47 import org.graalvm.compiler.nodes.type.StampTool; 48 import org.graalvm.compiler.replacements.nodes.BasicObjectCloneNode; 49 50 import jdk.vm.ci.meta.Assumptions; 51 import jdk.vm.ci.meta.ResolvedJavaField; 52 import jdk.vm.ci.meta.ResolvedJavaMethod; 53 import jdk.vm.ci.meta.ResolvedJavaType; 54 55 @NodeInfo 56 public final class ObjectCloneNode extends BasicObjectCloneNode implements VirtualizableAllocation, ArrayLengthProvider { 57 58 public static final NodeClass<ObjectCloneNode> TYPE = NodeClass.create(ObjectCloneNode.class); 59 60 public ObjectCloneNode(InvokeKind invokeKind, ResolvedJavaMethod targetMethod, int bci, StampPair returnStamp, ValueNode receiver) { 61 super(TYPE, invokeKind, targetMethod, bci, returnStamp, receiver); 62 } 63 64 @Override 65 @SuppressWarnings("try") 66 protected StructuredGraph getLoweredSnippetGraph(LoweringTool tool) { 67 ResolvedJavaType type = StampTool.typeOrNull(getObject()); 68 if (type != null) { 69 if (type.isArray()) { 70 Method method = ObjectCloneSnippets.arrayCloneMethods.get(type.getComponentType().getJavaKind()); 71 if (method != null) { 72 final ResolvedJavaMethod snippetMethod = tool.getMetaAccess().lookupJavaMethod(method); 73 final Replacements replacements = tool.getReplacements(); 74 StructuredGraph snippetGraph = null; 75 try (Scope s = Debug.scope("ArrayCloneSnippet", snippetMethod)) { 76 snippetGraph = replacements.getSnippet(snippetMethod, null); 77 } catch (Throwable e) { 78 throw Debug.handle(e); 79 } 80 81 assert snippetGraph != null : "ObjectCloneSnippets should be installed"; 82 return lowerReplacement((StructuredGraph) snippetGraph.copy(), tool); 83 } 84 assert false : "unhandled array type " + type.getComponentType().getJavaKind(); 85 } else { 86 Assumptions assumptions = graph().getAssumptions(); 87 type = getConcreteType(getObject().stamp()); 88 if (type != null) { 89 StructuredGraph newGraph = new StructuredGraph(AllowAssumptions.from(assumptions != null), INVALID_COMPILATION_ID); 90 ParameterNode param = newGraph.addWithoutUnique(new ParameterNode(0, StampPair.createSingle(getObject().stamp()))); 91 NewInstanceNode newInstance = newGraph.add(new NewInstanceNode(type, true)); 92 newGraph.addAfterFixed(newGraph.start(), newInstance); 93 ReturnNode returnNode = newGraph.add(new ReturnNode(newInstance)); 94 newGraph.addAfterFixed(newInstance, returnNode); 95 96 for (ResolvedJavaField field : type.getInstanceFields(true)) { 97 LoadFieldNode load = newGraph.add(LoadFieldNode.create(newGraph.getAssumptions(), param, field)); 98 newGraph.addBeforeFixed(returnNode, load); 99 newGraph.addBeforeFixed(returnNode, newGraph.add(new StoreFieldNode(newInstance, field, load))); 100 } 101 return lowerReplacement(newGraph, tool); 102 } 103 } 104 } 105 return null; 106 } 107 }