--- /dev/null 2017-01-22 10:16:57.869617664 -0800 +++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.nodes/src/org/graalvm/compiler/nodes/java/NewInstanceNode.java 2017-02-15 17:07:42.310419871 -0800 @@ -0,0 +1,100 @@ +/* + * Copyright (c) 2009, 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.nodes.java; + +import java.lang.ref.Reference; +import java.util.Collections; + +import org.graalvm.compiler.core.common.type.StampFactory; +import org.graalvm.compiler.core.common.type.TypeReference; +import org.graalvm.compiler.graph.NodeClass; +import org.graalvm.compiler.nodeinfo.NodeInfo; +import org.graalvm.compiler.nodes.ConstantNode; +import org.graalvm.compiler.nodes.FrameState; +import org.graalvm.compiler.nodes.ValueNode; +import org.graalvm.compiler.nodes.spi.VirtualizableAllocation; +import org.graalvm.compiler.nodes.spi.VirtualizerTool; +import org.graalvm.compiler.nodes.virtual.VirtualInstanceNode; + +import jdk.vm.ci.meta.ResolvedJavaField; +import jdk.vm.ci.meta.ResolvedJavaType; + +/** + * The {@code NewInstanceNode} represents the allocation of an instance class object. + */ +@NodeInfo(nameTemplate = "New {p#instanceClass/s}") +public class NewInstanceNode extends AbstractNewObjectNode implements VirtualizableAllocation { + + public static final NodeClass TYPE = NodeClass.create(NewInstanceNode.class); + protected final ResolvedJavaType instanceClass; + + public NewInstanceNode(ResolvedJavaType type, boolean fillContents) { + this(TYPE, type, fillContents, null); + } + + public NewInstanceNode(ResolvedJavaType type, boolean fillContents, FrameState stateBefore) { + this(TYPE, type, fillContents, stateBefore); + } + + protected NewInstanceNode(NodeClass c, ResolvedJavaType type, boolean fillContents, FrameState stateBefore) { + super(c, StampFactory.objectNonNull(TypeReference.createExactTrusted(type)), fillContents, stateBefore); + assert !type.isArray() && !type.isInterface() && !type.isPrimitive(); + this.instanceClass = type; + } + + /** + * Gets the instance class being allocated by this node. + * + * @return the instance class allocated + */ + public ResolvedJavaType instanceClass() { + return instanceClass; + } + + @Override + public void virtualize(VirtualizerTool tool) { + /* + * Reference objects can escape into their ReferenceQueue at any safepoint, therefore + * they're excluded from escape analysis. + */ + if (!tool.getMetaAccessProvider().lookupJavaType(Reference.class).isAssignableFrom(instanceClass)) { + VirtualInstanceNode virtualObject = createVirtualInstanceNode(true); + ResolvedJavaField[] fields = virtualObject.getFields(); + ValueNode[] state = new ValueNode[fields.length]; + for (int i = 0; i < state.length; i++) { + state[i] = defaultFieldValue(fields[i]); + } + tool.createVirtualObject(virtualObject, state, Collections. emptyList(), false); + tool.replaceWithVirtual(virtualObject); + } + } + + protected VirtualInstanceNode createVirtualInstanceNode(boolean hasIdentity) { + return new VirtualInstanceNode(instanceClass(), hasIdentity); + } + + /* Factored out in a separate method so that subclasses can override it. */ + protected ConstantNode defaultFieldValue(ResolvedJavaField field) { + return ConstantNode.defaultForKind(field.getType().getJavaKind(), graph()); + } +}