update_schedule.cpp

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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) 2016-2024 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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 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   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/>.
 *
 */
#include "update_schedule.hpp"

#include "application_manager.hpp"
#include "basic_block.hpp"

#include "Parameter.hpp"

#include "hls.hpp"
#include "hls_manager.hpp"
#include "hls_step.hpp"

#include "schedule.hpp"

#include "dbgPrintHelper.hpp"      // for DEBUG_LEVEL_
#include "string_manipulation.hpp" // for GET_CLASS
#include "tree_basic_block.hpp"
#include "tree_manager.hpp"
#include "tree_reindex.hpp"

UpdateSchedule::UpdateSchedule(const application_managerRef _AppM, unsigned int _function_id,
                               const DesignFlowManagerConstRef _design_flow_manager,
                               const ParameterConstRef _parameters)
    : FunctionFrontendFlowStep(_AppM, _function_id, UPDATE_SCHEDULE, _design_flow_manager, _parameters)
{
   debug_level = parameters->get_class_debug_level(GET_CLASS(*this), DEBUG_LEVEL_NONE);
}

UpdateSchedule::~UpdateSchedule() = default;

const CustomUnorderedSet<std::pair<FrontendFlowStepType, FrontendFlowStep::FunctionRelationship>>
UpdateSchedule::ComputeFrontendRelationships(const DesignFlowStep::RelationshipType relationship_type) const
{
   CustomUnorderedSet<std::pair<FrontendFlowStepType, FunctionRelationship>> relationships;
   switch(relationship_type)
   {
      case(DEPENDENCE_RELATIONSHIP):
      {
         break;
      }
      case(PRECEDENCE_RELATIONSHIP):
      {
         break;
      }
      case(INVALIDATION_RELATIONSHIP):
      {
         break;
      }
      default:
      {
         THROW_UNREACHABLE("");
      }
   }
   return relationships;
}

void UpdateSchedule::Initialize()
{
   if(GetPointer<const HLS_manager>(AppM) and GetPointer<const HLS_manager>(AppM)->get_HLS(function_id) and
      GetPointer<const HLS_manager>(AppM)->get_HLS(function_id)->Rsch)
   {
      schedule = GetPointer<const HLS_manager>(AppM)->get_HLS(function_id)->Rsch;
      const auto basic_block_graph = function_behavior->GetBBGraph(FunctionBehavior::BB);
      VertexIterator basic_block, basic_block_end;
      for(boost::tie(basic_block, basic_block_end) = boost::vertices(*basic_block_graph);
          basic_block != basic_block_end; basic_block++)
      {
         basic_block_graph->GetBBNodeInfo(*basic_block)->block->schedule = schedule;
      }
   }
}

bool UpdateSchedule::HasToBeExecuted() const
{
#if HAVE_ILP_BUILT
   if(parameters->getOption<HLSFlowStep_Type>(OPT_scheduling_algorithm) == HLSFlowStep_Type::SDC_SCHEDULING and
      GetPointer<const HLS_manager>(AppM) and GetPointer<const HLS_manager>(AppM)->get_HLS(function_id) and
      GetPointer<const HLS_manager>(AppM)->get_HLS(function_id)->Rsch)
   {
      return FunctionFrontendFlowStep::HasToBeExecuted();
   }
   else
#endif
   {
      return false;
   }
}

DesignFlowStep_Status UpdateSchedule::InternalExec()
{
   const auto TM = AppM->get_tree_manager();
   auto* fd = GetPointer<function_decl>(TM->get_tree_node_const(function_id));
   auto* sl = GetPointer<statement_list>(GET_NODE(fd->body));
   for(const auto& block : sl->list_of_bloc)
   {
      INDENT_DBG_MEX(DEBUG_LEVEL_VERY_PEDANTIC, debug_level, "-->BB" + STR(block.first));
      for(const auto& phi : block.second->CGetPhiList())
      {
         schedule->UpdateTime(phi->index);
      }
      for(const auto& statement : block.second->CGetStmtList())
      {
         schedule->UpdateTime(statement->index);
      }
      INDENT_DBG_MEX(DEBUG_LEVEL_VERY_PEDANTIC, debug_level, "<--");
   }
   return DesignFlowStep_Status::SUCCESS;
}