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/**CFile****************************************************************
FileName [aigPack.c]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [AIG package.]
Synopsis [Bit-packing code.]
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - April 28, 2007.]
Revision [$Id: aigPack.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
***********************************************************************/
#include "aig.h"
ABC_NAMESPACE_IMPL_START
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
// resubstitution manager
typedef struct Aig_ManPack_t_ Aig_ManPack_t;
struct Aig_ManPack_t_
{
Aig_Man_t * pAig; // working manager
Vec_Wrd_t * vSigns; // object signatures
Vec_Wrd_t * vPiPats; // PI assignments
Vec_Wrd_t * vPiCare; // PI care set
int iPatCur; // current pattern
int fVerbose; // verbosiness flag
// statistics
int nPatTotal; // number of all patterns
int nPatSkip; // number of skipped patterns
int nPatRepeat; // number of repeated patterns
};
static inline int Aig_Word6CountOnes( word t ) { return Aig_WordCountOnes( (unsigned)(t >> 32) ) + Aig_WordCountOnes( (unsigned)(t & 0xFFFFFFFF) ); }
static inline int Aig_Word6HasOneBit( word t ) { return (t & (t-1)) == 0; }
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Aig_ManPack_t * Aig_ManPackAlloc( Aig_Man_t * pAig )
{
Aig_ManPack_t * p;
p = ABC_CALLOC( Aig_ManPack_t, 1 );
p->pAig = pAig;
p->vSigns = Vec_WrdStart( Aig_ManObjNumMax(pAig) );
p->vPiPats = Vec_WrdStart( Aig_ManCiNum(pAig) );
p->vPiCare = Vec_WrdStart( Aig_ManCiNum(pAig) );
p->iPatCur = 1;
return p;
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Aig_ManPackCountCares( Aig_ManPack_t * p )
{
Aig_Obj_t * pObj;
int i, Total = 0;
Aig_ManForEachCi( p->pAig, pObj, i )
Total += Aig_Word6CountOnes( Vec_WrdEntry(p->vPiCare, i) );
return Total;
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Aig_ManPackPrintCare( Aig_ManPack_t * p )
{
Aig_Obj_t * pObj;
word Sign;
int i;
Aig_ManForEachCi( p->pAig, pObj, i )
{
Sign = Vec_WrdEntry( p->vPiCare, i );
// Extra_PrintBinary( stdout, (unsigned *)&Sign, 64 );
// printf( "\n" );
}
// printf( "\n" );
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Aig_ManPackFree( Aig_ManPack_t * p )
{
// Aig_ManPackPrintCare( p );
printf( "Patterns: " );
printf( "Total = %6d. ", p->nPatTotal );
printf( "Skipped = %6d. ", p->nPatSkip );
printf( "Cares = %6.2f %% ", 100.0*Aig_ManPackCountCares(p)/Aig_ManCiNum(p->pAig)/64 );
printf( "\n" );
Vec_WrdFree( p->vSigns );
Vec_WrdFree( p->vPiPats );
Vec_WrdFree( p->vPiCare );
ABC_FREE( p );
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Aig_ManPackSetRandom( Aig_ManPack_t * p )
{
Aig_Obj_t * pObj;
word Sign;
int i;
Aig_ManForEachCi( p->pAig, pObj, i )
{
Sign = (((word)Aig_ManRandom(0)) << 32) | ((word)Aig_ManRandom(0));
Vec_WrdWriteEntry( p->vPiPats, i, Sign << 1 );
}
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Aig_ManPackSimulate( Aig_ManPack_t * p )
{
Aig_Obj_t * pObj;
word Sign, Sign0, Sign1;
int i;
// set the constant
Vec_WrdWriteEntry( p->vSigns, 0, ~(word)0 );
// transfer into the array
Aig_ManForEachCi( p->pAig, pObj, i )
Vec_WrdWriteEntry( p->vSigns, Aig_ObjId(pObj), Vec_WrdEntry(p->vPiPats, i) );
// simulate internal nodes
Aig_ManForEachNode( p->pAig, pObj, i )
{
Sign0 = Vec_WrdEntry( p->vSigns, Aig_ObjFaninId0(pObj) );
Sign1 = Vec_WrdEntry( p->vSigns, Aig_ObjFaninId1(pObj) );
if ( Aig_ObjFaninC0(pObj) && Aig_ObjFaninC1(pObj) )
Sign = ~(Sign0 | Sign1);
else if ( Aig_ObjFaninC0(pObj) )
Sign = ~Sign0 & Sign1;
else if ( Aig_ObjFaninC1(pObj) )
Sign = Sign0 & ~Sign1;
else
Sign = Sign0 & Sign1;
Vec_WrdWriteEntry( p->vSigns, Aig_ObjId(pObj), Sign );
}
// set the outputs
Aig_ManForEachCo( p->pAig, pObj, i )
{
Sign0 = Vec_WrdEntry( p->vSigns, Aig_ObjFaninId0(pObj) );
Sign = Aig_ObjFaninC0(pObj) ? ~Sign0 : Sign0;
Vec_WrdWriteEntry( p->vSigns, Aig_ObjId(pObj), Sign );
}
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Aig_ManPackPrintStats( Aig_ManPack_t * p )
{
word Sign;
Aig_Obj_t * pObj;
int i, Total, Count, Counts[33] = {0}; // the number of nodes having that many patterns
Aig_ManForEachNode( p->pAig, pObj, i )
{
Sign = Vec_WrdEntry( p->vSigns, Aig_ObjId(pObj) );
Count = Aig_Word6CountOnes( Sign );
if ( Count > 32 )
Count = 64 - Count;
Counts[Count]++;
}
// print statistics
Total = 0;
for ( i = 0; i <= 32; i++ )
{
Total += Counts[i];
printf( "%2d : ", i );
printf( "%6d ", Counts[i] );
printf( "%6.1f %%", 100.0*Counts[i]/Aig_ManNodeNum(p->pAig) );
printf( "%6.1f %%", 100.0*Total/Aig_ManNodeNum(p->pAig) );
printf( "\n" );
}
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Vec_Int_t * Aig_ManPackConstNodes( Aig_ManPack_t * p )
{
Vec_Int_t * vNodes;
Aig_Obj_t * pObj;
word Sign;
int i;
vNodes = Vec_IntAlloc( 1000 );
Aig_ManForEachNode( p->pAig, pObj, i )
{
Sign = Vec_WrdEntry( p->vSigns, Aig_ObjId(pObj) );
if ( Sign == 0 || ~Sign == 0 || Aig_Word6HasOneBit(Sign) || Aig_Word6HasOneBit(~Sign) )
Vec_IntPush( vNodes, Aig_ObjId(pObj) );
}
return vNodes;
}
/**Function*************************************************************
Synopsis [Packs patterns into array of simulation info.]
Description []
SideEffects []
SeeAlso []
*************************************`**********************************/
int Aig_ManPackAddPatternTry( Aig_ManPack_t * p, int iBit, Vec_Int_t * vLits )
{
word * pInfo, * pPres;
int i, Lit;
Vec_IntForEachEntry( vLits, Lit, i )
{
pInfo = Vec_WrdEntryP( p->vPiPats, Abc_Lit2Var(Lit) );
pPres = Vec_WrdEntryP( p->vPiCare, Abc_Lit2Var(Lit) );
if ( Abc_InfoHasBit( (unsigned *)pPres, iBit ) &&
Abc_InfoHasBit( (unsigned *)pInfo, iBit ) == Abc_LitIsCompl(Lit) )
return 0;
}
Vec_IntForEachEntry( vLits, Lit, i )
{
pInfo = Vec_WrdEntryP( p->vPiPats, Abc_Lit2Var(Lit) );
pPres = Vec_WrdEntryP( p->vPiCare, Abc_Lit2Var(Lit) );
Abc_InfoSetBit( (unsigned *)pPres, iBit );
if ( Abc_InfoHasBit( (unsigned *)pInfo, iBit ) == Abc_LitIsCompl(Lit) )
Abc_InfoXorBit( (unsigned *)pInfo, iBit );
}
return 1;
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Aig_ManPackAddPattern( Aig_ManPack_t * p, Vec_Int_t * vLits )
{
int k;
for ( k = 1; k < 64; k++ )
if ( Aig_ManPackAddPatternTry( p, k, vLits ) )
break;
if ( k == 64 )
{
/*
word * pInfo, * pPres;
int i, Lit;
Vec_IntForEachEntry( vLits, Lit, i )
printf( "%d", Abc_LitIsCompl(Lit) );
printf( "\n\n" );
for ( k = 1; k < 64; k++ )
{
Vec_IntForEachEntry( vLits, Lit, i )
{
pInfo = Vec_WrdEntryP( p->vPiPats, Abc_Lit2Var(Lit) );
pPres = Vec_WrdEntryP( p->vPiCare, Abc_Lit2Var(Lit) );
if ( Abc_InfoHasBit( (unsigned *)pPres, k ) )
printf( "%d", Abc_InfoHasBit( (unsigned *)pInfo, k ) );
else
printf( "-" );
}
printf( "\n" );
}
*/
p->nPatSkip++;
}
p->nPatTotal++;
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Aig_ManPack_t * Aig_ManPackStart( Aig_Man_t * pAig )
{
Aig_ManPack_t * p;
p = Aig_ManPackAlloc( pAig );
Aig_ManPackSetRandom( p );
Aig_ManPackSimulate( p );
Aig_ManPackPrintStats( p );
return p;
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Aig_ManPackStop( Aig_ManPack_t * p )
{
Aig_ManPackSimulate( p );
Aig_ManPackPrintStats( p );
Aig_ManPackFree( p );
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
ABC_NAMESPACE_IMPL_END
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