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diff --git a/src/qml/jit/qv4domtree_p.h b/src/qml/jit/qv4domtree_p.h
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-/****************************************************************************
-**
-** Copyright (C) 2018 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the QtQml module of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** Commercial License Usage
-** Licensees holding valid commercial Qt licenses may use this file in
-** accordance with the commercial license agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and The Qt Company. For licensing terms
-** and conditions see https://www.qt.io/terms-conditions. For further
-** information use the contact form at https://www.qt.io/contact-us.
-**
-** GNU Lesser General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU Lesser
-** General Public License version 3 as published by the Free Software
-** Foundation and appearing in the file LICENSE.LGPL3 included in the
-** packaging of this file. Please review the following information to
-** ensure the GNU Lesser General Public License version 3 requirements
-** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
-**
-** GNU General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU
-** General Public License version 2.0 or (at your option) the GNU General
-** Public license version 3 or any later version approved by the KDE Free
-** Qt Foundation. The licenses are as published by the Free Software
-** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
-** included in the packaging of this file. Please review the following
-** information to ensure the GNU General Public License requirements will
-** be met: https://www.gnu.org/licenses/gpl-2.0.html and
-** https://www.gnu.org/licenses/gpl-3.0.html.
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#ifndef QV4DOMTREE_P_H
-#define QV4DOMTREE_P_H
-
-//
-//  W A R N I N G
-//  -------------
-//
-// This file is not part of the Qt API.  It exists purely as an
-// implementation detail.  This header file may change from version to
-// version without notice, or even be removed.
-//
-// We mean it.
-//
-
-#include "qv4mi_p.h"
-#include "qv4miblockset_p.h"
-
-QT_REQUIRE_CONFIG(qml_tracing);
-
-QT_BEGIN_NAMESPACE
-
-namespace QV4 {
-namespace IR {
-
-class DominatorTree
-{
-    Q_DISABLE_COPY_MOVE(DominatorTree)
-
-public:
-    DominatorTree(MIFunction *f);
-    ~DominatorTree() = default;
-
-    void dumpImmediateDominators() const;
-    MIFunction *function() const
-    { return m_function; }
-
-    void setImmediateDominator(MIBlock::Index dominated, MIBlock::Index dominator);
-
-    MIBlock::Index immediateDominator(MIBlock::Index blockIndex) const
-    { return m_idom[blockIndex]; }
-
-    bool dominates(MIBlock::Index dominator, MIBlock::Index dominated) const;
-
-    bool insideSameDominatorChain(MIBlock::Index one, MIBlock::Index other) const
-    { return one == other || dominates(one, other) || dominates(other, one); }
-
-    std::vector<MIBlock *> calculateDFNodeIterOrder() const;
-
-    std::vector<int> calculateNodeDepths() const;
-
-private: // functions
-    int calculateNodeDepth(MIBlock::Index nodeIdx, std::vector<int> &nodeDepths) const;
-    void link(MIBlock::Index p, MIBlock::Index n);
-    void calculateIDoms();
-    void dfs(MIBlock::Index node);
-    MIBlock::Index ancestorWithLowestSemi(MIBlock::Index v, std::vector<MIBlock::Index> &worklist);
-
-private: // data
-    struct Data {
-        std::vector<unsigned> dfnum; // MIBlock index -> dfnum
-        std::vector<MIBlock::Index> vertex;
-        std::vector<MIBlock::Index> parent; // MIBlock index -> parent MIBlock index
-        std::vector<MIBlock::Index> ancestor; // MIBlock index -> ancestor MIBlock index
-        std::vector<MIBlock::Index> best; // MIBlock index -> best MIBlock index
-        std::vector<MIBlock::Index> semi; // MIBlock index -> semi dominator MIBlock index
-        std::vector<MIBlock::Index> samedom; // MIBlock index -> same dominator MIBlock index
-        unsigned size = 0;
-    };
-
-    MIFunction *m_function;
-    QScopedPointer<Data> m_data;
-    std::vector<MIBlock::Index> m_idom; // MIBlock index -> immediate dominator MIBlock index
-};
-
-class DominatorFrontier
-{
-public:
-    DominatorFrontier(const DominatorTree &domTree)
-    { compute(domTree); }
-
-    const MIBlockSet &operator[](MIBlock *n) const
-    { return m_df[n->index()]; }
-
-private: // functions
-    void compute(const DominatorTree &domTree);
-    void dump(MIFunction *function);
-
-private: // data
-    std::vector<MIBlockSet> m_df; // MIBlock index -> dominator frontier
-};
-
-} // namespace IR
-} // namespace QV4
-
-QT_END_NAMESPACE
-
-#endif // QV4DOMTREE_P_H