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/**CFile****************************************************************
FileName [saigDup.c]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [Sequential AIG package.]
Synopsis [Various duplication procedures.]
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - June 20, 2005.]
Revision [$Id: saigDup.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
***********************************************************************/
#include "saig.h"
ABC_NAMESPACE_IMPL_START
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
/**Function*************************************************************
Synopsis [Duplicates while ORing the POs of sequential circuit.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Aig_Man_t * Saig_ManDupOrpos( Aig_Man_t * pAig )
{
Aig_Man_t * pAigNew;
Aig_Obj_t * pObj, * pMiter;
int i;
if ( pAig->nConstrs > 0 )
{
printf( "The AIG manager should have no constraints.\n" );
return NULL;
}
// start the new manager
pAigNew = Aig_ManStart( Aig_ManNodeNum(pAig) );
pAigNew->pName = Abc_UtilStrsav( pAig->pName );
pAigNew->nConstrs = pAig->nConstrs;
// map the constant node
Aig_ManConst1(pAig)->pData = Aig_ManConst1( pAigNew );
// create variables for PIs
Aig_ManForEachPi( pAig, pObj, i )
pObj->pData = Aig_ObjCreatePi( pAigNew );
// add internal nodes of this frame
Aig_ManForEachNode( pAig, pObj, i )
pObj->pData = Aig_And( pAigNew, Aig_ObjChild0Copy(pObj), Aig_ObjChild1Copy(pObj) );
// create PO of the circuit
pMiter = Aig_ManConst0( pAigNew );
Saig_ManForEachPo( pAig, pObj, i )
pMiter = Aig_Or( pAigNew, pMiter, Aig_ObjChild0Copy(pObj) );
Aig_ObjCreatePo( pAigNew, pMiter );
// transfer to register outputs
Saig_ManForEachLi( pAig, pObj, i )
Aig_ObjCreatePo( pAigNew, Aig_ObjChild0Copy(pObj) );
Aig_ManCleanup( pAigNew );
Aig_ManSetRegNum( pAigNew, Aig_ManRegNum(pAig) );
return pAigNew;
}
/**Function*************************************************************
Synopsis [Duplicates while ORing the POs of sequential circuit.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Aig_Man_t * Saig_ManCreateEquivMiter( Aig_Man_t * pAig, Vec_Int_t * vPairs )
{
Aig_Man_t * pAigNew;
Aig_Obj_t * pObj, * pObj2, * pMiter;
int i;
if ( pAig->nConstrs > 0 )
{
printf( "The AIG manager should have no constraints.\n" );
return NULL;
}
// start the new manager
pAigNew = Aig_ManStart( Aig_ManNodeNum(pAig) );
pAigNew->pName = Abc_UtilStrsav( pAig->pName );
pAigNew->nConstrs = pAig->nConstrs;
// map the constant node
Aig_ManConst1(pAig)->pData = Aig_ManConst1( pAigNew );
// create variables for PIs
Aig_ManForEachPi( pAig, pObj, i )
pObj->pData = Aig_ObjCreatePi( pAigNew );
// add internal nodes of this frame
Aig_ManForEachNode( pAig, pObj, i )
pObj->pData = Aig_And( pAigNew, Aig_ObjChild0Copy(pObj), Aig_ObjChild1Copy(pObj) );
// create POs
assert( Vec_IntSize(vPairs) % 2 == 0 );
Aig_ManForEachObjVec( vPairs, pAig, pObj, i )
{
pObj2 = Aig_ManObj( pAig, Vec_IntEntry(vPairs, ++i) );
pMiter = Aig_Exor( pAigNew, (Aig_Obj_t *)pObj->pData, (Aig_Obj_t *)pObj2->pData );
pMiter = Aig_NotCond( pMiter, pObj->fPhase ^ pObj2->fPhase );
Aig_ObjCreatePo( pAigNew, pMiter );
}
// transfer to register outputs
Saig_ManForEachLi( pAig, pObj, i )
Aig_ObjCreatePo( pAigNew, Aig_ObjChild0Copy(pObj) );
Aig_ManCleanup( pAigNew );
Aig_ManSetRegNum( pAigNew, Aig_ManRegNum(pAig) );
return pAigNew;
}
/**Function*************************************************************
Synopsis [Trims the model by removing PIs without fanout.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Aig_Man_t * Saig_ManTrimPis( Aig_Man_t * p )
{
Aig_Man_t * pNew;
Aig_Obj_t * pObj;
int i, fAllPisHaveNoRefs;
// check the refs of PIs
fAllPisHaveNoRefs = 1;
Saig_ManForEachPi( p, pObj, i )
if ( pObj->nRefs )
fAllPisHaveNoRefs = 0;
// start the new manager
pNew = Aig_ManStart( Aig_ManObjNum(p) );
pNew->pName = Abc_UtilStrsav( p->pName );
pNew->nConstrs = p->nConstrs;
// start mapping of the CI numbers
pNew->vCiNumsOrig = Vec_IntAlloc( Aig_ManPiNum(p) );
// map const and primary inputs
Aig_ManCleanData( p );
Aig_ManConst1(p)->pData = Aig_ManConst1(pNew);
Aig_ManForEachPi( p, pObj, i )
if ( fAllPisHaveNoRefs || pObj->nRefs || Saig_ObjIsLo(p, pObj) )
{
pObj->pData = Aig_ObjCreatePi( pNew );
Vec_IntPush( pNew->vCiNumsOrig, Vec_IntEntry(p->vCiNumsOrig, i) );
}
Aig_ManForEachNode( p, pObj, i )
pObj->pData = Aig_And( pNew, Aig_ObjChild0Copy(pObj), Aig_ObjChild1Copy(pObj) );
Aig_ManForEachPo( p, pObj, i )
pObj->pData = Aig_ObjCreatePo( pNew, Aig_ObjChild0Copy(pObj) );
Aig_ManSetRegNum( pNew, Aig_ManRegNum(p) );
return pNew;
}
/**Function*************************************************************
Synopsis [Duplicates the AIG manager recursively.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Aig_Obj_t * Saig_ManAbstractionDfs_rec( Aig_Man_t * pNew, Aig_Obj_t * pObj )
{
if ( pObj->pData )
return (Aig_Obj_t *)pObj->pData;
Saig_ManAbstractionDfs_rec( pNew, Aig_ObjFanin0(pObj) );
Saig_ManAbstractionDfs_rec( pNew, Aig_ObjFanin1(pObj) );
return (Aig_Obj_t *)(pObj->pData = Aig_And( pNew, Aig_ObjChild0Copy(pObj), Aig_ObjChild1Copy(pObj) ));
}
/**Function*************************************************************
Synopsis [Performs abstraction of the AIG to preserve the included flops.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Aig_Man_t * Saig_ManDupAbstraction( Aig_Man_t * p, Vec_Int_t * vFlops )
{
Aig_Man_t * pNew;//, * pTemp;
Aig_Obj_t * pObj, * pObjLi, * pObjLo;
int i, Entry;
Aig_ManCleanData( p );
// start the new manager
pNew = Aig_ManStart( 5000 );
pNew->pName = Abc_UtilStrsav( p->pName );
// map the constant node
Aig_ManConst1(p)->pData = Aig_ManConst1( pNew );
// label included flops
Vec_IntForEachEntry( vFlops, Entry, i )
{
pObjLi = Saig_ManLi( p, Entry );
assert( pObjLi->fMarkA == 0 );
pObjLi->fMarkA = 1;
pObjLo = Saig_ManLo( p, Entry );
assert( pObjLo->fMarkA == 0 );
pObjLo->fMarkA = 1;
}
// create variables for PIs
assert( p->vCiNumsOrig == NULL );
pNew->vCiNumsOrig = Vec_IntAlloc( Aig_ManPiNum(p) );
Aig_ManForEachPi( p, pObj, i )
if ( !pObj->fMarkA )
{
pObj->pData = Aig_ObjCreatePi( pNew );
Vec_IntPush( pNew->vCiNumsOrig, i );
}
// create variables for LOs
Aig_ManForEachPi( p, pObj, i )
if ( pObj->fMarkA )
{
pObj->fMarkA = 0;
pObj->pData = Aig_ObjCreatePi( pNew );
Vec_IntPush( pNew->vCiNumsOrig, i );
}
// add internal nodes
// Aig_ManForEachNode( p, pObj, i )
// pObj->pData = Aig_And( pNew, Aig_ObjChild0Copy(pObj), Aig_ObjChild1Copy(pObj) );
// create POs
Saig_ManForEachPo( p, pObj, i )
{
Saig_ManAbstractionDfs_rec( pNew, Aig_ObjFanin0(pObj) );
Aig_ObjCreatePo( pNew, Aig_ObjChild0Copy(pObj) );
}
// create LIs
Aig_ManForEachPo( p, pObj, i )
if ( pObj->fMarkA )
{
pObj->fMarkA = 0;
Saig_ManAbstractionDfs_rec( pNew, Aig_ObjFanin0(pObj) );
Aig_ObjCreatePo( pNew, Aig_ObjChild0Copy(pObj) );
}
Aig_ManSetRegNum( pNew, Vec_IntSize(vFlops) );
Aig_ManSeqCleanup( pNew );
// remove PIs without fanout
// pNew = Saig_ManTrimPis( pTemp = pNew );
// Aig_ManStop( pTemp );
return pNew;
}
/**Function*************************************************************
Synopsis [Resimulates the counter-example.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Saig_ManVerifyCex( Aig_Man_t * pAig, Abc_Cex_t * p )
{
Aig_Obj_t * pObj, * pObjRi, * pObjRo;
int RetValue, i, k, iBit = 0;
Aig_ManCleanMarkB(pAig);
Aig_ManConst1(pAig)->fMarkB = 1;
Saig_ManForEachLo( pAig, pObj, i )
pObj->fMarkB = Abc_InfoHasBit(p->pData, iBit++);
for ( i = 0; i <= p->iFrame; i++ )
{
Saig_ManForEachPi( pAig, pObj, k )
pObj->fMarkB = Abc_InfoHasBit(p->pData, iBit++);
Aig_ManForEachNode( pAig, pObj, k )
pObj->fMarkB = (Aig_ObjFanin0(pObj)->fMarkB ^ Aig_ObjFaninC0(pObj)) &
(Aig_ObjFanin1(pObj)->fMarkB ^ Aig_ObjFaninC1(pObj));
Aig_ManForEachPo( pAig, pObj, k )
pObj->fMarkB = Aig_ObjFanin0(pObj)->fMarkB ^ Aig_ObjFaninC0(pObj);
if ( i == p->iFrame )
break;
Saig_ManForEachLiLo( pAig, pObjRi, pObjRo, k )
pObjRo->fMarkB = pObjRi->fMarkB;
}
assert( iBit == p->nBits );
RetValue = Aig_ManPo(pAig, p->iPo)->fMarkB;
Aig_ManCleanMarkB(pAig);
return RetValue;
}
/**Function*************************************************************
Synopsis [Resimulates the counter-example.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Abc_Cex_t * Saig_ManExtendCex( Aig_Man_t * pAig, Abc_Cex_t * p )
{
Abc_Cex_t * pNew;
Aig_Obj_t * pObj, * pObjRi, * pObjRo;
int RetValue, i, k, iBit = 0;
// create new counter-example
pNew = Abc_CexAlloc( 0, Aig_ManPiNum(pAig), p->iFrame + 1 );
pNew->iPo = p->iPo;
pNew->iFrame = p->iFrame;
// simulate the AIG
Aig_ManCleanMarkB(pAig);
Aig_ManConst1(pAig)->fMarkB = 1;
Saig_ManForEachLo( pAig, pObj, i )
pObj->fMarkB = Abc_InfoHasBit(p->pData, iBit++);
for ( i = 0; i <= p->iFrame; i++ )
{
Saig_ManForEachPi( pAig, pObj, k )
pObj->fMarkB = Abc_InfoHasBit(p->pData, iBit++);
///////// write PI+LO values ////////////
Aig_ManForEachPi( pAig, pObj, k )
if ( pObj->fMarkB )
Abc_InfoSetBit(pNew->pData, Aig_ManPiNum(pAig)*i + k);
/////////////////////////////////////////
Aig_ManForEachNode( pAig, pObj, k )
pObj->fMarkB = (Aig_ObjFanin0(pObj)->fMarkB ^ Aig_ObjFaninC0(pObj)) &
(Aig_ObjFanin1(pObj)->fMarkB ^ Aig_ObjFaninC1(pObj));
Aig_ManForEachPo( pAig, pObj, k )
pObj->fMarkB = Aig_ObjFanin0(pObj)->fMarkB ^ Aig_ObjFaninC0(pObj);
if ( i == p->iFrame )
break;
Saig_ManForEachLiLo( pAig, pObjRi, pObjRo, k )
pObjRo->fMarkB = pObjRi->fMarkB;
}
assert( iBit == p->nBits );
RetValue = Aig_ManPo(pAig, p->iPo)->fMarkB;
Aig_ManCleanMarkB(pAig);
if ( RetValue == 0 )
printf( "Saig_ManExtendCex(): The counter-example is invalid!!!\n" );
return pNew;
}
/**Function*************************************************************
Synopsis [Resimulates the counter-example.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Saig_ManFindFailedPoCex( Aig_Man_t * pAig, Abc_Cex_t * p )
{
Aig_Obj_t * pObj, * pObjRi, * pObjRo;
int RetValue, i, k, iBit = 0;
Aig_ManCleanMarkB(pAig);
Aig_ManConst1(pAig)->fMarkB = 1;
Saig_ManForEachLo( pAig, pObj, i )
pObj->fMarkB = Abc_InfoHasBit(p->pData, iBit++);
for ( i = 0; i <= p->iFrame; i++ )
{
Saig_ManForEachPi( pAig, pObj, k )
pObj->fMarkB = Abc_InfoHasBit(p->pData, iBit++);
Aig_ManForEachNode( pAig, pObj, k )
pObj->fMarkB = (Aig_ObjFanin0(pObj)->fMarkB ^ Aig_ObjFaninC0(pObj)) &
(Aig_ObjFanin1(pObj)->fMarkB ^ Aig_ObjFaninC1(pObj));
Aig_ManForEachPo( pAig, pObj, k )
pObj->fMarkB = Aig_ObjFanin0(pObj)->fMarkB ^ Aig_ObjFaninC0(pObj);
if ( i == p->iFrame )
break;
Saig_ManForEachLiLo( pAig, pObjRi, pObjRo, k )
pObjRo->fMarkB = pObjRi->fMarkB;
}
assert( iBit == p->nBits );
// remember the number of failed output
RetValue = -1;
Saig_ManForEachPo( pAig, pObj, i )
if ( pObj->fMarkB )
{
RetValue = i;
break;
}
Aig_ManCleanMarkB(pAig);
return RetValue;
}
/**Function*************************************************************
Synopsis [Duplicates while ORing the POs of sequential circuit.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Aig_Man_t * Saig_ManDupWithPhase( Aig_Man_t * pAig, Vec_Int_t * vInit )
{
Aig_Man_t * pAigNew;
Aig_Obj_t * pObj;
int i;
assert( Aig_ManRegNum(pAig) <= Vec_IntSize(vInit) );
// start the new manager
pAigNew = Aig_ManStart( Aig_ManNodeNum(pAig) );
pAigNew->pName = Abc_UtilStrsav( pAig->pName );
pAigNew->nConstrs = pAig->nConstrs;
// map the constant node
Aig_ManConst1(pAig)->pData = Aig_ManConst1( pAigNew );
// create variables for PIs
Aig_ManForEachPi( pAig, pObj, i )
pObj->pData = Aig_ObjCreatePi( pAigNew );
// update the flop variables
Saig_ManForEachLo( pAig, pObj, i )
pObj->pData = Aig_NotCond( (Aig_Obj_t *)pObj->pData, Vec_IntEntry(vInit, i) );
// add internal nodes of this frame
Aig_ManForEachNode( pAig, pObj, i )
pObj->pData = Aig_And( pAigNew, Aig_ObjChild0Copy(pObj), Aig_ObjChild1Copy(pObj) );
// transfer to register outputs
Saig_ManForEachPo( pAig, pObj, i )
Aig_ObjCreatePo( pAigNew, Aig_ObjChild0Copy(pObj) );
// update the flop variables
Saig_ManForEachLi( pAig, pObj, i )
Aig_ObjCreatePo( pAigNew, Aig_NotCond(Aig_ObjChild0Copy(pObj), Vec_IntEntry(vInit, i)) );
// finalize
Aig_ManCleanup( pAigNew );
Aig_ManSetRegNum( pAigNew, Aig_ManRegNum(pAig) );
return pAigNew;
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
ABC_NAMESPACE_IMPL_END
|
