OrderedInstructions.hpp

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/*
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 *             ***********************************************
 *                              PandA Project
 *                     URL: http://panda.dei.polimi.it
 *                       Politecnico di Milano - DEIB
 *                        System Architectures Group
 *             ***********************************************
 *              Copyright (C) 2023-2024 Politecnico di Milano
 *
 *   This file is part of the PandA framework.
 *
 *   The PandA framework is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 3 of the License, or
 *   (at your option) any later version.
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 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
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 */
#ifndef ORDERED_INSTRUCTIONS_HPP
#define ORDERED_INSTRUCTIONS_HPP

#include "custom_map.hpp"
#include "refcount.hpp"

#include <list>
#include <memory>

CONSTREF_FORWARD_DECL(BBGraph);
REF_FORWARD_DECL(bloc);
REF_FORWARD_DECL(tree_node);
struct gimple_node;

class OrderedBasicBlock
{
   CustomMap<const struct gimple_node*, unsigned> NumberedInsts;

   std::list<tree_nodeRef>::const_iterator LastInstFound;

   unsigned NextInstPos;

   const std::list<tree_nodeRef>& BBInst;

   const blocRef BB;

   bool instComesBefore(const struct gimple_node* A, const struct gimple_node* B);

 public:
   explicit OrderedBasicBlock(const blocRef& BasicB);

   bool dominates(const struct gimple_node* A, const struct gimple_node* B);
};

class OrderedInstructions
{
   mutable CustomMap<unsigned int, std::unique_ptr<OrderedBasicBlock>> OBBMap;

   const BBGraphConstRef DT;

 public:
   explicit OrderedInstructions(BBGraphConstRef _DT);

   bool dominates(const unsigned int BBIA, const unsigned int BBIB) const;

   bool dominates(const struct gimple_node* InstA, const struct gimple_node* InstB) const;

   void invalidateBlock(unsigned int BBI);

   const BBGraphConstRef& getDT() const;
};

#endif // ORDERED_INSTRUCTIONS_HPP