FunctionCallOpt.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) 2021-2024 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
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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/>.
 *
 */
#ifndef FUNCTION_CALL_OPT_HPP
#define FUNCTION_CALL_OPT_HPP

#include "function_frontend_flow_step.hpp"

#include <utility>

#include "custom_map.hpp"
#include "custom_set.hpp"

class statement_list;
REF_FORWARD_DECL(application_manager);
CONSTREF_FORWARD_DECL(DesignFlowManager);
CONSTREF_FORWARD_DECL(Parameter);
CONSTREF_FORWARD_DECL(tree_node);

enum FunctionOptType
{
   INLINE,
   VERSION
};

class FunctionCallOpt : public FunctionFrontendFlowStep
{
 private:
   static CustomMap<unsigned int, CustomSet<std::tuple<unsigned int, FunctionOptType>>> opt_call;

   static size_t inline_max_cost;

   CustomMap<unsigned int, unsigned int> caller_bb;

   CustomUnorderedSet<unsigned int> already_visited;

   const CustomUnorderedSet<std::pair<FrontendFlowStepType, FunctionRelationship>>
   ComputeFrontendRelationships(const DesignFlowStep::RelationshipType relationship_type) const override;

   static bool HasConstantArgs(const tree_nodeConstRef& call_stmt);

   size_t compute_cost(const statement_list* body, bool& has_simd);

   size_t detect_loops(const statement_list* body) const;

 public:
   static CustomSet<unsigned int> always_inline;

   static CustomSet<unsigned int> never_inline;

   static void RequestCallOpt(const tree_nodeConstRef& call_stmt, unsigned int caller_id, FunctionOptType opt);

   FunctionCallOpt(const ParameterConstRef Param, const application_managerRef AppM, unsigned int function_id,
                   const DesignFlowManagerConstRef design_flow_manager);

   ~FunctionCallOpt() override;

   void Initialize() override;

   DesignFlowStep_Status InternalExec() override;

   bool HasToBeExecuted() const override;
};
#endif