dchSweep.c File Reference

#include "dchInt.h"
#include "misc/bar/bar.h"

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Functions
void	Dch_ManSweepNode (Dch_Man_t *p, Aig_Obj_t *pObj)
	FUNCTION DEFINITIONS ///.
void	Dch_ManSweep (Dch_Man_t *p)

Function Documentation

Dch_ManSweep()

void Dch_ManSweep

(

Dch_Man_t *

p

)

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

Synopsis [Performs fraiging for the internal nodes.]

Description []

SideEffects []

SeeAlso []

Definition at line 106 of file dchSweep.c.

{
    Bar_Progress_t * pProgress = NULL;
    Aig_Obj_t * pObj, * pObjNew;
    int i;
    // map constants and PIs
    p->pAigFraig = Aig_ManStart( Aig_ManObjNumMax(p->pAigTotal) );
    Aig_ManCleanData( p->pAigTotal );
    Aig_ManConst1(p->pAigTotal)->pData = Aig_ManConst1(p->pAigFraig);
    Aig_ManForEachCi( p->pAigTotal, pObj, i )
        pObj->pData = Aig_ObjCreateCi( p->pAigFraig );
    // sweep internal nodes
    pProgress = Bar_ProgressStart( stdout, Aig_ManObjNumMax(p->pAigTotal) );
    Aig_ManForEachNode( p->pAigTotal, pObj, i )
    {
        Bar_ProgressUpdate( pProgress, i, NULL );
        if ( Dch_ObjFraig(Aig_ObjFanin0(pObj)) == NULL || 
             Dch_ObjFraig(Aig_ObjFanin1(pObj)) == NULL )
            continue;
        pObjNew = Aig_And( p->pAigFraig, Dch_ObjChild0Fra(pObj), Dch_ObjChild1Fra(pObj) );
        if ( pObjNew == NULL )
            continue;
        Dch_ObjSetFraig( pObj, pObjNew );
        Dch_ManSweepNode( p, pObj );
    }
    Bar_ProgressStop( pProgress );
    // update the representatives of the nodes (makes classes invalid)
    ABC_FREE( p->pAigTotal->pReprs );
    p->pAigTotal->pReprs = p->pReprsProved;
    p->pReprsProved = NULL;
    // clean the mark
    Aig_ManCleanMarkB( p->pAigTotal );
}

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Dch_ManSweepNode()

void Dch_ManSweepNode	(	Dch_Man_t *	p,
		Aig_Obj_t *	pObj )

FUNCTION DEFINITIONS ///.

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

Synopsis [Performs fraiging for one node.]

Description [Returns the fraiged node.]

SideEffects []

SeeAlso []

Definition at line 49 of file dchSweep.c.

{ 
    Aig_Obj_t * pObjRepr, * pObjFraig, * pObjFraig2, * pObjReprFraig;
    int RetValue;
    // get representative of this class
    pObjRepr = Aig_ObjRepr( p->pAigTotal, pObj );
    if ( pObjRepr == NULL )
        return;
    // get the fraiged node
    pObjFraig = Dch_ObjFraig( pObj );
    if ( pObjFraig == NULL )
        return;
    // get the fraiged representative
    pObjReprFraig = Dch_ObjFraig( pObjRepr );
    if ( pObjReprFraig == NULL )
        return;
    // if the fraiged nodes are the same, return
    if ( Aig_Regular(pObjFraig) == Aig_Regular(pObjReprFraig) )
    {
        // remember the proved equivalence
        p->pReprsProved[ pObj->Id ] = pObjRepr;
        return;
    }
    assert( Aig_Regular(pObjFraig) != Aig_ManConst1(p->pAigFraig) );
    RetValue = Dch_NodesAreEquiv( p, Aig_Regular(pObjReprFraig), Aig_Regular(pObjFraig) );
    if ( RetValue == -1 ) // timed out
    {
        Dch_ObjSetFraig( pObj, NULL );
        return;
    }
    if ( RetValue == 1 )  // proved equivalent
    {
        pObjFraig2 = Aig_NotCond( pObjReprFraig, pObj->fPhase ^ pObjRepr->fPhase );
        Dch_ObjSetFraig( pObj, pObjFraig2 );
        // remember the proved equivalence
        p->pReprsProved[ pObj->Id ] = pObjRepr;
        return;
    }
    // disproved the equivalence
    if ( p->pPars->fSimulateTfo )
        Dch_ManResimulateCex( p, pObj, pObjRepr );
    else
        Dch_ManResimulateCex2( p, pObj, pObjRepr );
    assert( Aig_ObjRepr( p->pAigTotal, pObj ) != pObjRepr );
}

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