diff options
Diffstat (limited to 'src/opt/rwr/rwrExp.c')
| -rw-r--r-- | src/opt/rwr/rwrExp.c | 333 |
1 files changed, 333 insertions, 0 deletions
diff --git a/src/opt/rwr/rwrExp.c b/src/opt/rwr/rwrExp.c new file mode 100644 index 00000000..2d00bb1c --- /dev/null +++ b/src/opt/rwr/rwrExp.c @@ -0,0 +1,333 @@ +/**CFile**************************************************************** + + FileName [rwrExp.c] + + SystemName [ABC: Logic synthesis and verification system.] + + PackageName [DAG-aware AIG rewriting package.] + + Synopsis [Computation of practically used NN-classes of 4-input cuts.] + + Author [Alan Mishchenko] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - June 20, 2005.] + + Revision [$Id: rwrExp.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $] + +***********************************************************************/ + +#include "rwr.h" + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +typedef struct Rwr_Man4_t_ Rwr_Man4_t; +struct Rwr_Man4_t_ +{ + // internal lookups + int nFuncs; // the number of four-var functions + unsigned short * puCanons; // canonical forms + int * pnCounts; // the counters of functions in each class + int nConsidered; // the number of nodes considered + int nClasses; // the number of NN classes +}; + +typedef struct Rwr_Man5_t_ Rwr_Man5_t; +struct Rwr_Man5_t_ +{ + // internal lookups + stmm_table * tTableNN; // the NN canonical forms + stmm_table * tTableNPN; // the NPN canonical forms +}; + +static Rwr_Man4_t * s_pManRwrExp4 = NULL; +static Rwr_Man5_t * s_pManRwrExp5 = NULL; + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFINITIONS /// +//////////////////////////////////////////////////////////////////////// + +/**Function************************************************************* + + Synopsis [Collects stats about 4-var functions appearing in netlists.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Rwt_Man4ExploreStart() +{ + Rwr_Man4_t * p; + p = ALLOC( Rwr_Man4_t, 1 ); + memset( p, 0, sizeof(Rwr_Man4_t) ); + // canonical forms + p->nFuncs = (1<<16); + // canonical forms, phases, perms + Extra_Truth4VarNPN( &p->puCanons, NULL, NULL, NULL ); + // counters + p->pnCounts = ALLOC( int, p->nFuncs ); + memset( p->pnCounts, 0, sizeof(int) * p->nFuncs ); + s_pManRwrExp4 = p; +} + +/**Function************************************************************* + + Synopsis [Collects stats about 4-var functions appearing in netlists.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Rwt_Man4ExploreCount( unsigned uTruth ) +{ + assert( uTruth < (1<<16) ); + s_pManRwrExp4->pnCounts[ s_pManRwrExp4->puCanons[uTruth] ]++; +} + +/**Function************************************************************* + + Synopsis [Collects stats about 4-var functions appearing in netlists.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Rwt_Man4ExplorePrint() +{ + FILE * pFile; + int i, CountMax, CountWrite, nCuts, nClasses; + int * pDistrib; + int * pReprs; + // find the max number of occurences + nCuts = nClasses = 0; + CountMax = 0; + for ( i = 0; i < s_pManRwrExp4->nFuncs; i++ ) + { + if ( CountMax < s_pManRwrExp4->pnCounts[i] ) + CountMax = s_pManRwrExp4->pnCounts[i]; + nCuts += s_pManRwrExp4->pnCounts[i]; + if ( s_pManRwrExp4->pnCounts[i] > 0 ) + nClasses++; + } + printf( "Number of cuts considered = %8d.\n", nCuts ); + printf( "Classes occurring at least once = %8d.\n", nClasses ); + // print the distribution of classes + pDistrib = ALLOC( int, CountMax + 1 ); + pReprs = ALLOC( int, CountMax + 1 ); + memset( pDistrib, 0, sizeof(int)*(CountMax + 1) ); + for ( i = 0; i < s_pManRwrExp4->nFuncs; i++ ) + { + pDistrib[ s_pManRwrExp4->pnCounts[i] ]++; + pReprs[ s_pManRwrExp4->pnCounts[i] ] = i; + } + + printf( "Occurence = %6d. Num classes = %4d. \n", 0, 2288-nClasses ); + for ( i = 1; i <= CountMax; i++ ) + if ( pDistrib[i] ) + { + printf( "Occurence = %6d. Num classes = %4d. Repr = ", i, pDistrib[i] ); + Extra_PrintBinary( stdout, (unsigned*)&(pReprs[i]), 16 ); + printf( "\n" ); + } + free( pDistrib ); + free( pReprs ); + // write into a file all classes above limit (5) + CountWrite = 0; + pFile = fopen( "npnclass_stats4.txt", "w" ); + for ( i = 0; i < s_pManRwrExp4->nFuncs; i++ ) + if ( s_pManRwrExp4->pnCounts[i] > 0 ) + { + Extra_PrintHex( pFile, i, 4 ); + fprintf( pFile, " %10d\n", s_pManRwrExp4->pnCounts[i] ); +// fprintf( pFile, "%d ", i ); + CountWrite++; + } + fclose( pFile ); + printf( "%d classes written into file \"%s\".\n", CountWrite, "npnclass_stats4.txt" ); +} + + + + +/**Function************************************************************* + + Synopsis [Collects stats about 4-var functions appearing in netlists.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Rwt_Man5ExploreStart() +{ + Rwr_Man5_t * p; + p = ALLOC( Rwr_Man5_t, 1 ); + memset( p, 0, sizeof(Rwr_Man5_t) ); + p->tTableNN = stmm_init_table( st_numcmp, st_numhash ); + p->tTableNPN = stmm_init_table( st_numcmp, st_numhash ); + s_pManRwrExp5 = p; + +//Extra_PrintHex( stdout, Extra_TruthCanonNPN( 0x0000FFFF, 5 ), 5 ); +//printf( "\n" ); +} + +/**Function************************************************************* + + Synopsis [Collects stats about 4-var functions appearing in netlists.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Rwt_Man5ExploreCount( unsigned uTruth ) +{ + int * pCounter; + if ( !stmm_find_or_add( s_pManRwrExp5->tTableNN, (char *)uTruth, (char***)&pCounter ) ) + *pCounter = 0; + (*pCounter)++; +} + +/**Function************************************************************* + + Synopsis [Collects stats about 4-var functions appearing in netlists.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Rwt_Man5ExplorePrint() +{ + FILE * pFile; + stmm_generator * gen; + int i, CountMax, nCuts, Counter; + int * pDistrib; + unsigned * pReprs; + unsigned uTruth, uTruthC; + int clk = clock(); + Vec_Int_t * vClassesNN, * vClassesNPN; + + // find the max number of occurences + nCuts = 0; + CountMax = 0; + stmm_foreach_item( s_pManRwrExp5->tTableNN, gen, (char **)&uTruth, (char **)&Counter ) + { + nCuts += Counter; + if ( CountMax < Counter ) + CountMax = Counter; + } + printf( "Number of cuts considered = %8d.\n", nCuts ); + printf( "Classes occurring at least once = %8d.\n", stmm_count(s_pManRwrExp5->tTableNN) ); + printf( "The largest number of occurence = %8d.\n", CountMax ); + + // print the distribution of classes + pDistrib = ALLOC( int, CountMax + 1 ); + pReprs = ALLOC( unsigned, CountMax + 1 ); + memset( pDistrib, 0, sizeof(int)*(CountMax + 1) ); + stmm_foreach_item( s_pManRwrExp5->tTableNN, gen, (char **)&uTruth, (char **)&Counter ) + { + assert( Counter <= CountMax ); + pDistrib[ Counter ]++; + pReprs[ Counter ] = uTruth; + } + + for ( i = 1; i <= CountMax; i++ ) + if ( pDistrib[i] ) + { + printf( "Occurence = %6d. Num classes = %4d. Repr = ", i, pDistrib[i] ); + Extra_PrintBinary( stdout, pReprs + i, 32 ); + printf( "\n" ); + } + free( pDistrib ); + free( pReprs ); + + + // put them into an array + vClassesNN = Vec_IntAlloc( stmm_count(s_pManRwrExp5->tTableNN) ); + stmm_foreach_item( s_pManRwrExp5->tTableNN, gen, (char **)&uTruth, NULL ) + Vec_IntPush( vClassesNN, (int)uTruth ); + Vec_IntSortUnsigned( vClassesNN ); + + // write into a file all classes + pFile = fopen( "nnclass_stats5.txt", "w" ); + Vec_IntForEachEntry( vClassesNN, uTruth, i ) + { + if ( !stmm_lookup( s_pManRwrExp5->tTableNN, (char *)uTruth, (char **)&Counter ) ) + { + assert( 0 ); + } + Extra_PrintHex( pFile, uTruth, 5 ); + fprintf( pFile, " %10d\n", Counter ); + } + fclose( pFile ); + printf( "%d classes written into file \"%s\".\n", vClassesNN->nSize, "nnclass_stats5.txt" ); + + +clk = clock(); + // how many NPN classes exist? + Vec_IntForEachEntry( vClassesNN, uTruth, i ) + { + int * pCounter; + uTruthC = Extra_TruthCanonNPN( uTruth, 5 ); + if ( !stmm_find_or_add( s_pManRwrExp5->tTableNPN, (char *)uTruthC, (char***)&pCounter ) ) + *pCounter = 0; + if ( !stmm_lookup( s_pManRwrExp5->tTableNN, (char *)uTruth, (char **)&Counter ) ) + { + assert( 0 ); + } + (*pCounter) += Counter; + } + printf( "The numbe of NPN classes = %d.\n", stmm_count(s_pManRwrExp5->tTableNPN) ); +PRT( "Computing NPN classes", clock() - clk ); + + // put them into an array + vClassesNPN = Vec_IntAlloc( stmm_count(s_pManRwrExp5->tTableNPN) ); + stmm_foreach_item( s_pManRwrExp5->tTableNPN, gen, (char **)&uTruth, NULL ) + Vec_IntPush( vClassesNPN, (int)uTruth ); + Vec_IntSortUnsigned( vClassesNPN ); + + // write into a file all classes + pFile = fopen( "npnclass_stats5.txt", "w" ); + Vec_IntForEachEntry( vClassesNPN, uTruth, i ) + { + if ( !stmm_lookup( s_pManRwrExp5->tTableNPN, (char *)uTruth, (char **)&Counter ) ) + { + assert( 0 ); + } + Extra_PrintHex( pFile, uTruth, 5 ); + fprintf( pFile, " %10d\n", Counter ); + } + fclose( pFile ); + printf( "%d classes written into file \"%s\".\n", vClassesNPN->nSize, "npnclass_stats5.txt" ); + + + // can they be uniquely characterized? + +} + + + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + |