saigScl.c File Reference

#include "saig.h"

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Functions
ABC_NAMESPACE_IMPL_START void	Saig_ManReportUselessRegisters (Aig_Man_t *pAig)
	DECLARATIONS ///.
int	Saig_ManReportComplements (Aig_Man_t *p)

Function Documentation

Saig_ManReportComplements()

int Saig_ManReportComplements

(

Aig_Man_t *

p

)

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

Synopsis [Report the number of pairs of complemented registers.]

Description []

SideEffects []

SeeAlso []

Definition at line 85 of file saigScl.c.

{
    Aig_Obj_t * pObj, * pFanin;
    int i, Counter = 0;
    assert( Aig_ManRegNum(p) > 0 );
    Aig_ManForEachObj( p, pObj, i )
        assert( !pObj->fMarkA );
    Aig_ManForEachLiSeq( p, pObj, i )
    {
        pFanin = Aig_ObjFanin0(pObj);
        if ( pFanin->fMarkA )
            Counter++;
        else
            pFanin->fMarkA = 1;
    }
    // count fanins that have both attributes
    Aig_ManForEachLiSeq( p, pObj, i )
    {
        pFanin = Aig_ObjFanin0(pObj);
        pFanin->fMarkA = 0;
    }
    return Counter;
}

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Saig_ManReportUselessRegisters()

ABC_NAMESPACE_IMPL_START void Saig_ManReportUselessRegisters

(

Aig_Man_t *

pAig

)

DECLARATIONS ///.

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

FileName [saigScl.c]

SystemName [ABC: Logic synthesis and verification system.]

PackageName [Sequential AIG package.]

Synopsis [Sequential cleanup.]

Author [Alan Mishchenko]

Affiliation [UC Berkeley]

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

Revision [

Id

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

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

Synopsis [Report registers useless for SEC.]

Description []

SideEffects []

SeeAlso []

Definition at line 45 of file saigScl.c.

{
    Aig_Obj_t * pObj, * pDriver;
    int i, Counter1, Counter2;
    // set PIO numbers
    Aig_ManSetCioIds( pAig );
    // check how many POs are driven by a register whose ref count is 1
    Counter1 = 0;
    Saig_ManForEachPo( pAig, pObj, i )
    {
        pDriver = Aig_ObjFanin0(pObj);
        if ( Saig_ObjIsLo(pAig, pDriver) && Aig_ObjRefs(pDriver) == 1 )
            Counter1++;
    }
    // check how many PIs have ref count 1 and drive a register
    Counter2 = 0;
    Saig_ManForEachLi( pAig, pObj, i )
    {
        pDriver = Aig_ObjFanin0(pObj);
        if ( Saig_ObjIsPi(pAig, pDriver) && Aig_ObjRefs(pDriver) == 1 )
            Counter2++;
    }
    if ( Counter1 )
        printf( "Network has %d (out of %d) registers driving POs.\n", Counter1, Saig_ManRegNum(pAig) );
    if ( Counter2 )
        printf( "Network has %d (out of %d) registers driven by PIs.\n", Counter2, Saig_ManRegNum(pAig) );
}

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