mfs.h File Reference

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Data Structures
struct	Mfs_Par_t_

Typedefs
typedef typedefABC_NAMESPACE_HEADER_START struct Mfs_Par_t_	Mfs_Par_t
	INCLUDES ///. More...

Functions
void	Abc_NtkMfsParsDefault (Mfs_Par_t *pPars)
	MACRO DEFINITIONS ///. More...
int	Abc_NtkMfs (Abc_Ntk_t *pNtk, Mfs_Par_t *pPars)

Typedef Documentation

typedef typedefABC_NAMESPACE_HEADER_START struct Mfs_Par_t_ Mfs_Par_t

INCLUDES ///.

CFile****************************************************************

FileName [mfs.h]

SystemName [ABC: Logic synthesis and verification system.]

PackageName [The good old minimization with complete don't-cares.]

Synopsis [External declarations.]

Author [Alan Mishchenko]

Affiliation [UC Berkeley]

Date [Ver. 1.0. Started - June 20, 2005.]

Revision [

Id:

mfs.h,v 1.00 2005/06/20 00:00:00 alanmi Exp

]PARAMETERS ///BASIC TYPES ///

Definition at line 42 of file mfs.h.

Function Documentation

int Abc_NtkMfs	(	Abc_Ntk_t *	pNtk,
		Mfs_Par_t *	pPars
	)

Function*************************************************************

Synopsis []

Description []

SideEffects []

SeeAlso []

Definition at line 377 of file mfsCore.c.

{
    extern Aig_Man_t * Abc_NtkToDar( Abc_Ntk_t * pNtk, int fExors, int fRegisters );

    Bdc_Par_t Pars = {0}, * pDecPars = &Pars;
    ProgressBar * pProgress;
    Mfs_Man_t * p;
    Abc_Obj_t * pObj;
    Vec_Vec_t * vLevels;
    Vec_Ptr_t * vNodes;
    int i, k, nNodes, nFaninMax;
    abctime clk = Abc_Clock(), clk2;
    int nTotalNodesBeg = Abc_NtkNodeNum(pNtk);
    int nTotalEdgesBeg = Abc_NtkGetTotalFanins(pNtk);

    assert( Abc_NtkIsLogic(pNtk) );
    nFaninMax = Abc_NtkGetFaninMax(pNtk);
    if ( pPars->fResub )
    {
        if ( nFaninMax > 8 )
        {
            printf( "Nodes with more than %d fanins will not be processed.\n", 8 );
            nFaninMax = 8;
        }
    }
    else
    {
        if ( nFaninMax > MFS_FANIN_MAX )
        {
            printf( "Nodes with more than %d fanins will not be processed.\n", MFS_FANIN_MAX );
            nFaninMax = MFS_FANIN_MAX;
        }
    }
    // perform the network sweep
//    Abc_NtkSweep( pNtk, 0 );
    // convert into the AIG
    if ( !Abc_NtkToAig(pNtk) )
    {
        fprintf( stdout, "Converting to AIGs has failed.\n" );
        return 0;
    }
    assert( Abc_NtkHasAig(pNtk) );

    // start the manager
    p = Mfs_ManAlloc( pPars );
    p->pNtk = pNtk;
    p->nFaninMax = nFaninMax;

    // precomputer power-aware metrics
    if ( pPars->fPower )
    {
        extern Vec_Int_t * Abc_NtkPowerEstimate( Abc_Ntk_t * pNtk, int fProbOne );
        if ( pPars->fResub )
            p->vProbs = Abc_NtkPowerEstimate( pNtk, 0 );
        else
            p->vProbs = Abc_NtkPowerEstimate( pNtk, 1 );
#if 0
        printf( "Total switching before = %7.2f.\n", Abc_NtkMfsTotalSwitching(pNtk) );
#else
        p->TotalSwitchingBeg = Abc_NtkMfsTotalSwitching(pNtk);
#endif
    }

    if ( pNtk->pExcare )
    {
        Abc_Ntk_t * pTemp;
        if ( Abc_NtkPiNum((Abc_Ntk_t *)pNtk->pExcare) != Abc_NtkCiNum(pNtk) )
            printf( "The PI count of careset (%d) and logic network (%d) differ. Careset is not used.\n",
                Abc_NtkPiNum((Abc_Ntk_t *)pNtk->pExcare), Abc_NtkCiNum(pNtk) );
        else
        {
            pTemp = Abc_NtkStrash( (Abc_Ntk_t *)pNtk->pExcare, 0, 0, 0 );
            p->pCare = Abc_NtkToDar( pTemp, 0, 0 );
            Abc_NtkDelete( pTemp );
            p->vSuppsInv = Aig_ManSupportsInverse( p->pCare );
        }
    }
    if ( p->pCare != NULL )
        printf( "Performing optimization with %d external care clauses.\n", Aig_ManCoNum(p->pCare) );
    // prepare the BDC manager
    if ( !pPars->fResub )
    {
        pDecPars->nVarsMax = (nFaninMax < 3) ? 3 : nFaninMax;
        pDecPars->fVerbose = pPars->fVerbose;
        p->vTruth = Vec_IntAlloc( 0 );
        p->pManDec = Bdc_ManAlloc( pDecPars );
    }

    // label the register outputs
    if ( p->pCare )
    {
        Abc_NtkForEachCi( pNtk, pObj, i )
            pObj->pData = (void *)(ABC_PTRUINT_T)i;
    }

    // compute levels
    Abc_NtkLevel( pNtk );
    Abc_NtkStartReverseLevels( pNtk, pPars->nGrowthLevel );

    // compute don't-cares for each node
    nNodes = 0;
    p->nTotalNodesBeg = nTotalNodesBeg;
    p->nTotalEdgesBeg = nTotalEdgesBeg;
    if ( pPars->fResub )
    {
#if 0
        printf( "TotalSwitching (%7.2f --> ", Abc_NtkMfsTotalSwitching(pNtk) );
#endif
        if (pPars->fPower)
        {
            Abc_NtkMfsPowerResub( p, pPars);
        } else
        {
        pProgress = Extra_ProgressBarStart( stdout, Abc_NtkObjNumMax(pNtk) );
        Abc_NtkForEachNode( pNtk, pObj, i )
        {
            if ( p->pPars->nDepthMax && (int)pObj->Level > p->pPars->nDepthMax )
                continue;
            if ( Abc_ObjFaninNum(pObj) < 2 || Abc_ObjFaninNum(pObj) > nFaninMax )
                continue;
            if ( !p->pPars->fVeryVerbose )
                Extra_ProgressBarUpdate( pProgress, i, NULL );
            if ( pPars->fResub )
                Abc_NtkMfsResub( p, pObj );
            else
                Abc_NtkMfsNode( p, pObj );
        }
        Extra_ProgressBarStop( pProgress );
#if 0
        printf( " %7.2f )\n", Abc_NtkMfsTotalSwitching(pNtk) );
#endif
    }
    } else
    {
#if 0
        printf( "Total switching before  = %7.2f,  ----> ", Abc_NtkMfsTotalSwitching(pNtk) );
#endif
        pProgress = Extra_ProgressBarStart( stdout, Abc_NtkNodeNum(pNtk) );
        vLevels = Abc_NtkLevelize( pNtk );
        Vec_VecForEachLevelStart( vLevels, vNodes, k, 1 )
        {
            if ( !p->pPars->fVeryVerbose )
                Extra_ProgressBarUpdate( pProgress, nNodes, NULL );
            p->nNodesGainedLevel = 0;
            p->nTotConfLevel = 0;
            p->nTimeOutsLevel = 0;
            clk2 = Abc_Clock();
            Vec_PtrForEachEntry( Abc_Obj_t *, vNodes, pObj, i )
            {
                if ( p->pPars->nDepthMax && (int)pObj->Level > p->pPars->nDepthMax )
                    break;
                if ( Abc_ObjFaninNum(pObj) < 2 || Abc_ObjFaninNum(pObj) > nFaninMax )
                    continue;
                if ( pPars->fResub )
                    Abc_NtkMfsResub( p, pObj );
                else
                    Abc_NtkMfsNode( p, pObj );
            }
            nNodes += Vec_PtrSize(vNodes);
            if ( pPars->fVerbose )
            {
                /*
            printf( "Lev = %2d. Node = %5d. Ave gain = %5.2f. Ave conf = %5.2f. T/o = %6.2f %%  ",
                k, Vec_PtrSize(vNodes),
                1.0*p->nNodesGainedLevel/Vec_PtrSize(vNodes),
                1.0*p->nTotConfLevel/Vec_PtrSize(vNodes),
                100.0*p->nTimeOutsLevel/Vec_PtrSize(vNodes) );
            ABC_PRT( "Time", Abc_Clock() - clk2 );
            */
            }
        }
        Extra_ProgressBarStop( pProgress );
        Vec_VecFree( vLevels );
#if 0
        printf( " %7.2f.\n", Abc_NtkMfsTotalSwitching(pNtk) );
#endif
    }
    Abc_NtkStopReverseLevels( pNtk );

    // perform the sweeping
    if ( !pPars->fResub )
    {
        extern void Abc_NtkBidecResyn( Abc_Ntk_t * pNtk, int fVerbose );
//        Abc_NtkSweep( pNtk, 0 );
//        Abc_NtkBidecResyn( pNtk, 0 );
    }

    p->nTotalNodesEnd = Abc_NtkNodeNum(pNtk);
    p->nTotalEdgesEnd = Abc_NtkGetTotalFanins(pNtk);

    // undo labesl
    if ( p->pCare )
    {
        Abc_NtkForEachCi( pNtk, pObj, i )
            pObj->pData = NULL;
    }

    if ( pPars->fPower )
    {
#if 1
        p->TotalSwitchingEnd = Abc_NtkMfsTotalSwitching(pNtk);
//        printf( "Total switching after  = %7.2f.\n", Abc_NtkMfsTotalSwitching(pNtk) );
#else
        printf( "Total switching after  = %7.2f.\n", Abc_NtkMfsTotalSwitching(pNtk) );
#endif
    }

    // free the manager
    p->timeTotal = Abc_Clock() - clk;
    Mfs_ManStop( p );
    return 1;
}

void Abc_NtkMfsParsDefault

(

Mfs_Par_t *

pPars

)

MACRO DEFINITIONS ///.

FUNCTION DECLARATIONS ///

MACRO DEFINITIONS ///.

Function*************************************************************

Synopsis []

Description []

SideEffects []

SeeAlso []

MACRO DEFINITIONS ///.

CFile****************************************************************

FileName [mfsCore.c]

SystemName [ABC: Logic synthesis and verification system.]

PackageName [The good old minimization with complete don't-cares.]

Synopsis [Core procedures of this package.]

Author [Alan Mishchenko]

Affiliation [UC Berkeley]

Date [Ver. 1.0. Started - June 20, 2005.]

Revision [

Id:

mfsCore.c,v 1.00 2005/06/20 00:00:00 alanmi Exp

]FUNCTION DEFINITIONS /// Function*************************************************************

Synopsis []

Description []

SideEffects []

SeeAlso []

Definition at line 47 of file mfsCore.c.

{
    memset( pPars, 0, sizeof(Mfs_Par_t) );
    pPars->nWinTfoLevs  =    2;
    pPars->nFanoutsMax  =   30;
    pPars->nDepthMax    =   20;
    pPars->nWinMax      =  300;
    pPars->nGrowthLevel =    0;
    pPars->nBTLimit     = 5000;
    pPars->fRrOnly      =    0;
    pPars->fResub       =    1;
    pPars->fArea        =    0;
    pPars->fMoreEffort  =    0;
    pPars->fSwapEdge    =    0;
    pPars->fOneHotness  =    0;
    pPars->fVerbose     =    0;
    pPars->fVeryVerbose =    0;
}