001/*
002 * Copyright (c) 2009, 2014, Oracle and/or its affiliates. All rights reserved.
003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004 *
005 * This code is free software; you can redistribute it and/or modify it
006 * under the terms of the GNU General Public License version 2 only, as
007 * published by the Free Software Foundation.
008 *
009 * This code is distributed in the hope that it will be useful, but WITHOUT
010 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
011 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
012 * version 2 for more details (a copy is included in the LICENSE file that
013 * accompanied this code).
014 *
015 * You should have received a copy of the GNU General Public License version
016 * 2 along with this work; if not, write to the Free Software Foundation,
017 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
018 *
019 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
020 * or visit www.oracle.com if you need additional information or have any
021 * questions.
022 */
023package com.oracle.graal.nodes;
024
025import com.oracle.graal.compiler.common.type.*;
026import com.oracle.graal.graph.*;
027import com.oracle.graal.nodeinfo.*;
028import com.oracle.graal.nodes.extended.*;
029
030/**
031 * Guard {@link PhiNode}s merge guard dependencies at control flow merges.
032 */
033@NodeInfo(nameTemplate = "GuardPhi({i#values})", allowedUsageTypes = {InputType.Guard})
034public final class GuardPhiNode extends PhiNode implements GuardingNode {
035
036    public static final NodeClass<GuardPhiNode> TYPE = NodeClass.create(GuardPhiNode.class);
037    @OptionalInput(InputType.Guard) NodeInputList<ValueNode> values;
038
039    public GuardPhiNode(AbstractMergeNode merge) {
040        super(TYPE, StampFactory.forVoid(), merge);
041        this.values = new NodeInputList<>(this);
042    }
043
044    public GuardPhiNode(AbstractMergeNode merge, ValueNode[] values) {
045        super(TYPE, StampFactory.forVoid(), merge);
046        this.values = new NodeInputList<>(this, values);
047    }
048
049    @Override
050    public NodeInputList<ValueNode> values() {
051        return values;
052    }
053}