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/**CFile****************************************************************
FileName [nwkStrash.c]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [Logic network representation.]
Synopsis [Performs structural hashing for the network.]
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - June 20, 2005.]
Revision [$Id: nwkStrash.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
***********************************************************************/
#include "nwk.h"
ABC_NAMESPACE_IMPL_START
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
/**Function*************************************************************
Synopsis [Derives AIG from the local functions of the node.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Nwk_ManStrashNode_rec( Aig_Man_t * p, Hop_Obj_t * pObj )
{
assert( !Hop_IsComplement(pObj) );
if ( !Hop_ObjIsNode(pObj) || Hop_ObjIsMarkA(pObj) )
return;
Nwk_ManStrashNode_rec( p, Hop_ObjFanin0(pObj) );
Nwk_ManStrashNode_rec( p, Hop_ObjFanin1(pObj) );
pObj->pData = Aig_And( p, (Aig_Obj_t *)Hop_ObjChild0Copy(pObj), (Aig_Obj_t *)Hop_ObjChild1Copy(pObj) );
assert( !Hop_ObjIsMarkA(pObj) ); // loop detection
Hop_ObjSetMarkA( pObj );
}
/**Function*************************************************************
Synopsis [Derives AIG from the local functions of the node.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Aig_Obj_t * Nwk_ManStrashNode( Aig_Man_t * p, Nwk_Obj_t * pObj )
{
Hop_Man_t * pMan = pObj->pMan->pManHop;
Hop_Obj_t * pRoot = pObj->pFunc;
Nwk_Obj_t * pFanin;
int i;
assert( Nwk_ObjIsNode(pObj) );
// check the constant case
if ( Hop_Regular(pRoot) == Hop_ManConst1(pMan) )
return Aig_NotCond( Aig_ManConst1(p), Hop_IsComplement(pRoot) );
// set elementary variables
Nwk_ObjForEachFanin( pObj, pFanin, i )
Hop_IthVar(pMan, i)->pData = pFanin->pCopy;
// strash the AIG of this node
Nwk_ManStrashNode_rec( p, Hop_Regular(pRoot) );
Hop_ConeUnmark_rec( Hop_Regular(pRoot) );
// return the final node
return Aig_NotCond( (Aig_Obj_t *)Hop_Regular(pRoot)->pData, Hop_IsComplement(pRoot) );
}
/**Function*************************************************************
Synopsis [Derives AIG from the logic network.]
Description [Assumes topological ordering of nodes.]
SideEffects []
SeeAlso []
***********************************************************************/
Aig_Man_t * Nwk_ManStrash( Nwk_Man_t * pNtk )
{
Vec_Ptr_t * vObjs;
Aig_Man_t * pMan;
Aig_Obj_t * pObjNew;
Nwk_Obj_t * pObj;
int i, Level;
pMan = Aig_ManStart( Nwk_ManGetAigNodeNum(pNtk) );
pMan->pName = Abc_UtilStrsav( pNtk->pName );
pMan->pSpec = Abc_UtilStrsav( pNtk->pSpec );
pMan->pManTime = Tim_ManDup( (Tim_Man_t *)pNtk->pManTime, 1 );
Tim_ManIncrementTravId( (Tim_Man_t *)pMan->pManTime );
Nwk_ManForEachObj( pNtk, pObj, i )
pObj->pCopy = NULL;
// Nwk_ManForEachObj( pNtk, pObj, i )
vObjs = Nwk_ManDfs( pNtk );
Vec_PtrForEachEntry( Nwk_Obj_t *, vObjs, pObj, i )
{
if ( Nwk_ObjIsCi(pObj) )
{
pObjNew = Aig_ObjCreateCi(pMan);
Level = Tim_ManGetCiArrival( (Tim_Man_t *)pMan->pManTime, pObj->PioId );
Aig_ObjSetLevel( pObjNew, Level );
}
else if ( Nwk_ObjIsCo(pObj) )
{
pObjNew = Aig_ObjCreateCo( pMan, Aig_NotCond((Aig_Obj_t *)Nwk_ObjFanin0(pObj)->pCopy, pObj->fInvert) );
Level = Aig_ObjLevel( pObjNew );
Tim_ManSetCoArrival( (Tim_Man_t *)pMan->pManTime, pObj->PioId, (float)Level );
}
else if ( Nwk_ObjIsNode(pObj) )
{
pObjNew = Nwk_ManStrashNode( pMan, pObj );
}
else
assert( 0 );
pObj->pCopy = pObjNew;
}
Vec_PtrFree( vObjs );
Aig_ManCleanup( pMan );
Aig_ManSetRegNum( pMan, 0 );
return pMan;
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
ABC_NAMESPACE_IMPL_END
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