1 /*
   2  * Copyright (c) 2009, 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.virtual.nodes;
  24 
  25 import java.util.List;
  26 
  27 import org.graalvm.compiler.graph.Node;
  28 import org.graalvm.compiler.graph.NodeClass;
  29 import org.graalvm.compiler.graph.NodeInputList;
  30 import org.graalvm.compiler.nodeinfo.NodeInfo;
  31 import org.graalvm.compiler.nodes.ValueNode;
  32 import org.graalvm.compiler.nodes.virtual.EscapeObjectState;
  33 import org.graalvm.compiler.nodes.virtual.VirtualObjectNode;
  34 
  35 /**
  36  * This class encapsulated the virtual state of an escape analyzed object.
  37  */
  38 @NodeInfo
  39 public final class VirtualObjectState extends EscapeObjectState implements Node.ValueNumberable {
  40 
  41     public static final NodeClass<VirtualObjectState> TYPE = NodeClass.create(VirtualObjectState.class);
  42     @Input NodeInputList<ValueNode> values;
  43 
  44     public NodeInputList<ValueNode> values() {
  45         return values;
  46     }
  47 
  48     public VirtualObjectState(VirtualObjectNode object, ValueNode[] values) {
  49         super(TYPE, object);
  50         assert object.entryCount() == values.length;
  51         this.values = new NodeInputList<>(this, values);
  52     }
  53 
  54     public VirtualObjectState(VirtualObjectNode object, List<ValueNode> values) {
  55         super(TYPE, object);
  56         assert object.entryCount() == values.size();
  57         this.values = new NodeInputList<>(this, values);
  58     }
  59 
  60     @Override
  61     public VirtualObjectState duplicateWithVirtualState() {
  62         return graph().addWithoutUnique(new VirtualObjectState(object(), values));
  63     }
  64 
  65     @Override
  66     public void applyToNonVirtual(NodeClosure<? super ValueNode> closure) {
  67         for (ValueNode value : values) {
  68             closure.apply(this, value);
  69         }
  70     }
  71 }