| /* |
| * Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| package org.graalvm.compiler.hotspot.replacements; |
| |
| import static org.graalvm.compiler.core.common.CompilationIdentifier.INVALID_COMPILATION_ID; |
| |
| import java.lang.reflect.Method; |
| |
| import org.graalvm.compiler.core.common.type.StampPair; |
| import org.graalvm.compiler.debug.Debug; |
| import org.graalvm.compiler.debug.Debug.Scope; |
| import org.graalvm.compiler.graph.NodeClass; |
| import org.graalvm.compiler.nodeinfo.NodeInfo; |
| import org.graalvm.compiler.nodes.CallTargetNode.InvokeKind; |
| import org.graalvm.compiler.nodes.ParameterNode; |
| import org.graalvm.compiler.nodes.ReturnNode; |
| import org.graalvm.compiler.nodes.StructuredGraph; |
| import org.graalvm.compiler.nodes.StructuredGraph.AllowAssumptions; |
| import org.graalvm.compiler.nodes.ValueNode; |
| import org.graalvm.compiler.nodes.java.LoadFieldNode; |
| import org.graalvm.compiler.nodes.java.NewInstanceNode; |
| import org.graalvm.compiler.nodes.java.StoreFieldNode; |
| import org.graalvm.compiler.nodes.spi.ArrayLengthProvider; |
| import org.graalvm.compiler.nodes.spi.LoweringTool; |
| import org.graalvm.compiler.nodes.spi.Replacements; |
| import org.graalvm.compiler.nodes.spi.VirtualizableAllocation; |
| import org.graalvm.compiler.nodes.type.StampTool; |
| import org.graalvm.compiler.replacements.nodes.BasicObjectCloneNode; |
| |
| import jdk.vm.ci.meta.Assumptions; |
| import jdk.vm.ci.meta.ResolvedJavaField; |
| import jdk.vm.ci.meta.ResolvedJavaMethod; |
| import jdk.vm.ci.meta.ResolvedJavaType; |
| |
| @NodeInfo |
| public final class ObjectCloneNode extends BasicObjectCloneNode implements VirtualizableAllocation, ArrayLengthProvider { |
| |
| public static final NodeClass<ObjectCloneNode> TYPE = NodeClass.create(ObjectCloneNode.class); |
| |
| public ObjectCloneNode(InvokeKind invokeKind, ResolvedJavaMethod targetMethod, int bci, StampPair returnStamp, ValueNode receiver) { |
| super(TYPE, invokeKind, targetMethod, bci, returnStamp, receiver); |
| } |
| |
| @Override |
| @SuppressWarnings("try") |
| protected StructuredGraph getLoweredSnippetGraph(LoweringTool tool) { |
| ResolvedJavaType type = StampTool.typeOrNull(getObject()); |
| if (type != null) { |
| if (type.isArray()) { |
| Method method = ObjectCloneSnippets.arrayCloneMethods.get(type.getComponentType().getJavaKind()); |
| if (method != null) { |
| final ResolvedJavaMethod snippetMethod = tool.getMetaAccess().lookupJavaMethod(method); |
| final Replacements replacements = tool.getReplacements(); |
| StructuredGraph snippetGraph = null; |
| try (Scope s = Debug.scope("ArrayCloneSnippet", snippetMethod)) { |
| snippetGraph = replacements.getSnippet(snippetMethod, null); |
| } catch (Throwable e) { |
| throw Debug.handle(e); |
| } |
| |
| assert snippetGraph != null : "ObjectCloneSnippets should be installed"; |
| return lowerReplacement((StructuredGraph) snippetGraph.copy(), tool); |
| } |
| assert false : "unhandled array type " + type.getComponentType().getJavaKind(); |
| } else { |
| Assumptions assumptions = graph().getAssumptions(); |
| type = getConcreteType(getObject().stamp()); |
| if (type != null) { |
| StructuredGraph newGraph = new StructuredGraph(AllowAssumptions.from(assumptions != null), INVALID_COMPILATION_ID); |
| ParameterNode param = newGraph.addWithoutUnique(new ParameterNode(0, StampPair.createSingle(getObject().stamp()))); |
| NewInstanceNode newInstance = newGraph.add(new NewInstanceNode(type, true)); |
| newGraph.addAfterFixed(newGraph.start(), newInstance); |
| ReturnNode returnNode = newGraph.add(new ReturnNode(newInstance)); |
| newGraph.addAfterFixed(newInstance, returnNode); |
| |
| for (ResolvedJavaField field : type.getInstanceFields(true)) { |
| LoadFieldNode load = newGraph.add(LoadFieldNode.create(newGraph.getAssumptions(), param, field)); |
| newGraph.addBeforeFixed(returnNode, load); |
| newGraph.addBeforeFixed(returnNode, newGraph.add(new StoreFieldNode(newInstance, field, load))); |
| } |
| return lowerReplacement(newGraph, tool); |
| } |
| } |
| } |
| return null; |
| } |
| } |