source: src/CodeTools/DeclStats.cc @ 567903e

//
// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
//
// The contents of this file are covered under the licence agreement in the
// file "LICENCE" distributed with Cforall.
//
// DeclStats.cc --
//
// Author           : Aaron Moss
// Created On       : Wed Jan 31 16:40:00 2016
// Last Modified By : Aaron Moss
// Last Modified On : Wed Jan 31 16:40:00 2016
// Update Count     : 1
//

#include "DeclStats.h"

#include <iostream>
#include <map>
#include <string>
#include <unordered_map>
#include <unordered_set>

#include "Common/VectorMap.h"
#include "GenPoly/GenPoly.h"
#include "Parser/LinkageSpec.h"
#include "SynTree/Declaration.h"
#include "SynTree/Visitor.h"

namespace CodeTools {
        
        class DeclStats : public Visitor {
                struct Stats {
                        unsigned n_decls;     ///< Total number of declarations
                        unsigned mono_decls;  ///< Monomorphic declarations
                        unsigned poly_decls;  ///< Polymorphic declarations
                        /// Count of declarations with each name
                        std::unordered_map<std::string, unsigned> by_name;
                        /// Count of declarations with each number of parameters
                        VectorMap<unsigned> by_params;
                        /// Count of declarations with each number of return types
                        VectorMap<unsigned> by_returns;
                        /// Count of declarations with each number of polymorphic parameters
                        VectorMap<unsigned> n_poly_params;
                        /// Count of declarations with each number of polymorphic return types
                        VectorMap<unsigned> n_poly_returns;
                        /// Count of declarations with each percentage of polymorphic parameters
                        std::map<unsigned, unsigned> p_poly_params;
                        /// Count of declarations with each percentage of polymorphic returns
                        std::map<unsigned, unsigned> p_poly_returns;

                        Stats() : n_decls(0), mono_decls(0), poly_decls(0), by_name(), by_params(), by_returns(), n_poly_params(), n_poly_returns(), p_poly_params(), p_poly_returns() {}

                        Stats& operator+= (const Stats& o) {
                                n_decls += o.n_decls;
                                mono_decls += o.mono_decls;
                                poly_decls += o.poly_decls;
                                
                                for ( auto& entry : o.by_name ) {
                                        by_name[ entry.first ] += entry.second;
                                }
                                
                                by_params.reserve( o.by_params.size() );
                                for ( unsigned i = 0; i < o.by_params.size(); ++i ) {
                                        by_params[i] += o.by_params[i];
                                }

                                by_returns.reserve( o.by_returns.size() );
                                for ( unsigned i = 0; i < o.by_returns.size(); ++i ) {
                                        by_returns[i] += o.by_returns[i];
                                }

                                n_poly_params.reserve( o.n_poly_params.size() );
                                for ( unsigned i = 0; i < o.n_poly_params.size(); ++i ) {
                                        n_poly_params[i] += o.n_poly_params[i];
                                }

                                n_poly_returns.reserve( o.n_poly_returns.size() );
                                for ( unsigned i = 0; i < o.n_poly_returns.size(); ++i ) {
                                        n_poly_returns[i] += o.n_poly_returns[i];
                                }

                                for ( const auto& entry : o.p_poly_params ) {
                                        p_poly_params[ entry.first ] += entry.second;
                                }

                                for ( const auto& entry : o.p_poly_returns ) {
                                        p_poly_returns[ entry.first ] += entry.second;
                                }

                                return *this;
                        }
                };

                Stats for_linkage[LinkageSpec::NoOfSpecs];   ///< Stores separate stats per linkage
                std::unordered_set<std::string> seen_names;  ///< Stores manglenames already seen to avoid double-counting
                Stats total;

        public:
                using Visitor::visit;

                virtual void visit( FunctionDecl *decl ) {
                        // skip if already seen declaration for this function
                        const std::string& mangleName = decl->get_mangleName().empty() ? decl->get_name() : decl->get_mangleName();
                        if ( ! seen_names.insert( mangleName ).second ) return;
                        
                        Stats& stats = for_linkage[ decl->get_linkage() ];

                        ++stats.n_decls;
                        FunctionType* fnTy = decl->get_functionType();
                        if ( fnTy->get_forall().empty() ) ++stats.mono_decls; else ++stats.poly_decls;

                        ++stats.by_name[ decl->get_name() ];

                        unsigned n_params = 0;
                        unsigned n_poly_params = 0;
                        for ( auto pdecl : fnTy->get_parameters() ) {
                                n_params += pdecl->get_type()->size();
                                if ( GenPoly::hasPolyBase( pdecl->get_type() ) ) ++n_poly_params;
                        }
                        ++stats.by_params.at( n_params );
                        ++stats.n_poly_params.at( n_poly_params );
                        if ( n_params > 0 ) ++stats.p_poly_params[ n_poly_params*100/n_params ];

                        unsigned n_returns = 0;
                        unsigned n_poly_returns = 0;
                        for ( auto rdecl : fnTy->get_returnVals() ) {
                                n_returns += rdecl->get_type()->size();
                                if ( GenPoly::hasPolyBase( rdecl->get_type() ) ) ++n_poly_returns;
                        }
                        ++stats.by_returns.at( n_returns );
                        ++stats.n_poly_returns.at( n_poly_returns );
                        if ( n_returns > 0 ) ++stats.p_poly_returns[ n_poly_returns*100/n_returns ];
                }

        private:
                template<typename F>
                void printAll( const char* name, F extract ) {
                        std::cout << "\"" << name << "\",";
                        for ( const auto& stats : for_linkage ) {
                                std::cout << "," << extract(stats);
                        }
                        std::cout << "," << extract(total) << std::endl;
                }

                template<typename F>
                void printAllMap( const char* name, F extract ) {
                        for ( const auto& entry : extract(total) ) {
                                const auto& key = entry.first;
                                std::cout << "\"" << name << "\"," << key;
                                for ( const auto& stats : for_linkage ) {
                                        const auto& map = extract(stats);
                                        auto it = map.find( key );
                                        if ( it == map.end() ) std::cout << ",0";
                                        else std::cout << "," << it->second;
                                }
                                std::cout  << "," << entry.second << std::endl;
                        }
                }

                template<typename F>
                void printAllHisto( const char* name, F extract ) {
                        VectorMap<unsigned> histos[LinkageSpec::NoOfSpecs];
                        VectorMap<unsigned> thisto;

                        for ( const auto& entry : extract(total) ) { ++thisto.at( entry.second ); }

                        for ( unsigned i = 0; i < LinkageSpec::NoOfSpecs; ++i ) {
                                // can't be a higher count in one of the sub-histograms than the total
                                histos[i].reserve( thisto.size() );

                                for ( const auto& entry : extract(for_linkage[i]) ) { ++histos[i][entry.second]; }
                        }

                        for ( unsigned i = 0; i < thisto.size(); ++i ) {
                                std::cout << "\"" << name << "\"," << i;
                                for ( const auto& histo : histos ) {
                                        std::cout << "," << histo[i];
                                }
                                std::cout << "," << thisto[i] << std::endl;
                        }
                }
                
        public:
                void print() {
                        for ( auto& stats : for_linkage ) {
                                total += stats;
                        }

                        std::cout << ",,\"intrinsic\",\"Cforall\",\"C\",\"autogen\",\"builtin\",\"TOTAL\"" << std::endl;

                        printAll("mono_decls", [](const Stats& stats) { return stats.mono_decls; });
                        printAll("poly_decls", [](const Stats& stats) { return stats.poly_decls; });
                        printAll("n_decls", [](const Stats& stats) { return stats.n_decls; });
                        printAll("unique_names", [](const Stats& stats) { return stats.by_name.size(); });

                        printAllHisto("overloads", [](const Stats& stats) { return stats.by_name; });
                        printAllMap("n_poly_params", [](const Stats& stats) { return stats.n_poly_params; });
                        printAllMap("n_params", [](const Stats& stats) { return stats.by_params; });
                        printAllMap("%_poly_params", [](const Stats& stats) { return stats.p_poly_params; });
                        printAllMap("n_poly_returns", [](const Stats& stats) { return stats.n_poly_returns; });
                        printAllMap("n_returns", [](const Stats& stats) { return stats.by_returns; });
                        printAllMap("%_poly_returns", [](const Stats& stats) { return stats.p_poly_returns; });
                }
        };

        void printDeclStats( std::list< Declaration * > &translationUnit ) {
                DeclStats stats;
                acceptAll( translationUnit, stats );
                stats.print();
        }
        
} // namespace CodeTools

// Local Variables: //
// tab-width: 4 //
// mode: c++ //
// compile-command: "make install" //
// End: //