scalar_ssa_data_dependence_computation.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) 2004-2024 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
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 */
#include "scalar_ssa_data_dependence_computation.hpp"

#include "Parameter.hpp"

#include "dbgPrintHelper.hpp" // for DEBUG_LEVEL_
#include "function_behavior.hpp"
#include "hash_helper.hpp"
#include "op_graph.hpp"
#include "operations_graph_constructor.hpp"
#include "string_manipulation.hpp" // for GET_CLASS

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

ScalarSsaDataDependenceComputation::~ScalarSsaDataDependenceComputation() = default;

const CustomUnorderedSet<std::pair<FrontendFlowStepType, FrontendFlowStep::FunctionRelationship>>
ScalarSsaDataDependenceComputation::ComputeFrontendRelationships(
    const DesignFlowStep::RelationshipType relationship_type) const
{
   CustomUnorderedSet<std::pair<FrontendFlowStepType, FunctionRelationship>> relationships;
   switch(relationship_type)
   {
      case(DEPENDENCE_RELATIONSHIP):
      {
         relationships.insert(std::make_pair(OP_REACHABILITY_COMPUTATION, SAME_FUNCTION));
         relationships.insert(std::make_pair(VAR_ANALYSIS, SAME_FUNCTION));
         relationships.insert(std::make_pair(OP_ORDER_COMPUTATION, SAME_FUNCTION));
         break;
      }
      case(INVALIDATION_RELATIONSHIP):
      case(PRECEDENCE_RELATIONSHIP):
      {
         break;
      }
      default:
      {
         THROW_UNREACHABLE("");
      }
   }
   return relationships;
}

void ScalarSsaDataDependenceComputation::Initialize()
{
   if(bb_version != 0 and bb_version != function_behavior->GetBBVersion())
   {
      const OpGraphConstRef fsaodg = function_behavior->CGetOpGraph(FunctionBehavior::FSAODG);
      if(boost::num_vertices(*fsaodg) != 0)
      {
         EdgeIterator edge, edge_end;
         for(boost::tie(edge, edge_end) = boost::edges(*fsaodg); edge != edge_end; edge++)
         {
            function_behavior->ogc->RemoveSelector(*edge, DFG_SCA_SELECTOR | FB_DFG_SCA_SELECTOR | ADG_SCA_SELECTOR |
                                                              FB_ADG_SCA_SELECTOR | ODG_SCA_SELECTOR |
                                                              FB_ODG_SCA_SELECTOR);
         }
      }
   }
}