1/*
2 * Copyright (c) 2009, 2014, 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;
24
25import org.graalvm.compiler.core.common.type.StampFactory;
26import org.graalvm.compiler.graph.NodeClass;
27import org.graalvm.compiler.graph.NodeInputList;
28import org.graalvm.compiler.nodeinfo.InputType;
29import org.graalvm.compiler.nodeinfo.NodeInfo;
30import org.graalvm.compiler.nodes.extended.GuardingNode;
31
32/**
33 * Guard {@link PhiNode}s merge guard dependencies at control flow merges.
34 */
35@NodeInfo(nameTemplate = "GuardPhi({i#values})", allowedUsageTypes = {InputType.Guard})
36public final class GuardPhiNode extends PhiNode implements GuardingNode {
37
38    public static final NodeClass<GuardPhiNode> TYPE = NodeClass.create(GuardPhiNode.class);
39    @OptionalInput(InputType.Guard) NodeInputList<ValueNode> values;
40
41    public GuardPhiNode(AbstractMergeNode merge) {
42        super(TYPE, StampFactory.forVoid(), merge);
43        this.values = new NodeInputList<>(this);
44    }
45
46    public GuardPhiNode(AbstractMergeNode merge, ValueNode[] values) {
47        super(TYPE, StampFactory.forVoid(), merge);
48        this.values = new NodeInputList<>(this, values);
49    }
50
51    @Override
52    public NodeInputList<ValueNode> values() {
53        return values;
54    }
55}
56