1/*
2 * Copyright (c) 2015, 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.nodes.debug;
24
25import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_0;
26import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_0;
27
28import org.graalvm.compiler.core.common.type.StampFactory;
29import org.graalvm.compiler.graph.Node;
30import org.graalvm.compiler.graph.NodeClass;
31import org.graalvm.compiler.nodeinfo.NodeInfo;
32import org.graalvm.compiler.nodes.FixedWithNextNode;
33import org.graalvm.compiler.nodes.Invoke;
34import org.graalvm.compiler.nodes.spi.LIRLowerable;
35import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;
36
37@NodeInfo(cycles = CYCLES_0, size = SIZE_0)
38public final class ControlFlowAnchorNode extends FixedWithNextNode implements LIRLowerable, ControlFlowAnchored {
39
40    public static final NodeClass<ControlFlowAnchorNode> TYPE = NodeClass.create(ControlFlowAnchorNode.class);
41
42    private static class Unique {
43    }
44
45    protected Unique unique;
46
47    public ControlFlowAnchorNode() {
48        super(TYPE, StampFactory.forVoid());
49        this.unique = new Unique();
50    }
51
52    /**
53     * Used by MacroSubstitution.
54     */
55    public ControlFlowAnchorNode(@SuppressWarnings("unused") Invoke invoke) {
56        this();
57    }
58
59    @Override
60    public void generate(NodeLIRBuilderTool generator) {
61        // do nothing
62    }
63
64    @Override
65    protected void afterClone(Node other) {
66        assert other.graph() != null && other.graph() != graph() : this + " should never be cloned in the same graph";
67    }
68}
69