VirtualObjectState.java revision 12657:6ef01bd40ce2 
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 */
23package org.graalvm.compiler.virtual.nodes;
24
25import java.util.List;
26
27import org.graalvm.compiler.graph.Node;
28import org.graalvm.compiler.graph.NodeClass;
29import org.graalvm.compiler.graph.NodeInputList;
30import org.graalvm.compiler.nodeinfo.NodeInfo;
31import org.graalvm.compiler.nodes.ValueNode;
32import org.graalvm.compiler.nodes.virtual.EscapeObjectState;
33import org.graalvm.compiler.nodes.virtual.VirtualObjectNode;
34
35/**
36 * This class encapsulated the virtual state of an escape analyzed object.
37 */
38@NodeInfo
39public 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}
72