mirror of https://github.com/YosysHQ/abc.git
213 lines
6.1 KiB
C
213 lines
6.1 KiB
C
/**CFile****************************************************************
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FileName [fsimMan.c]
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SystemName [ABC: Logic synthesis and verification system.]
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PackageName [Fast sequential AIG simulator.]
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Synopsis [Simulation manager.]
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Author [Alan Mishchenko]
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Affiliation [UC Berkeley]
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Date [Ver. 1.0. Started - June 20, 2005.]
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Revision [$Id: fsimMan.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
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***********************************************************************/
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#include "fsimInt.h"
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ABC_NAMESPACE_IMPL_START
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////////////////////////////////////////////////////////////////////////
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/// DECLARATIONS ///
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////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////
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/// FUNCTION DEFINITIONS ///
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////////////////////////////////////////////////////////////////////////
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/**Function*************************************************************
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Synopsis [Creates fast simulation manager.]
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Description []
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SideEffects []
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SeeAlso []
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***********************************************************************/
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int Fsim_ManCreate_rec( Fsim_Man_t * p, Aig_Obj_t * pObj )
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{
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int iFan0, iFan1, iTemp;
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assert( !Aig_IsComplement(pObj) );
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if ( pObj->iData )
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return pObj->iData;
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assert( !Aig_ObjIsConst1(pObj) );
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if ( Aig_ObjIsNode(pObj) )
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{
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iFan0 = Fsim_ManCreate_rec( p, Aig_ObjFanin0(pObj) );
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iFan1 = Fsim_ManCreate_rec( p, Aig_ObjFanin1(pObj) );
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assert( iFan0 != iFan1 );
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if ( --p->pRefs[iFan0] == 0 )
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p->nCrossCut--;
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iFan0 = Fsim_Var2Lit( iFan0, Aig_ObjFaninC0(pObj) );
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if ( --p->pRefs[iFan1] == 0 )
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p->nCrossCut--;
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iFan1 = Fsim_Var2Lit( iFan1, Aig_ObjFaninC1(pObj) );
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if ( p->pAig->pEquivs )
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Fsim_ManCreate_rec( p, Aig_ObjEquiv(p->pAig, pObj) );
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}
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else if ( Aig_ObjIsPo(pObj) )
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{
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assert( Aig_ObjRefs(pObj) == 0 );
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iFan0 = Fsim_ManCreate_rec( p, Aig_ObjFanin0(pObj) );
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if ( --p->pRefs[iFan0] == 0 )
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p->nCrossCut--;
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iFan0 = Fsim_Var2Lit( iFan0, Aig_ObjFaninC0(pObj) );
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iFan1 = 0;
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}
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else
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{
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iFan0 = iFan1 = 0;
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Vec_IntPush( p->vCis2Ids, Aig_ObjPioNum(pObj) );
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}
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if ( iFan0 < iFan1 )
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iTemp = iFan0, iFan0 = iFan1, iFan1 = iTemp;
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p->pFans0[p->nObjs] = iFan0;
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p->pFans1[p->nObjs] = iFan1;
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p->pRefs[p->nObjs] = Aig_ObjRefs(pObj);
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if ( p->pRefs[p->nObjs] )
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if ( p->nCrossCutMax < ++p->nCrossCut )
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p->nCrossCutMax = p->nCrossCut;
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return pObj->iData = p->nObjs++;
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}
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/**Function*************************************************************
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Synopsis [Creates fast simulation manager.]
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Description []
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SideEffects []
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SeeAlso []
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***********************************************************************/
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Fsim_Man_t * Fsim_ManCreate( Aig_Man_t * pAig )
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{
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Fsim_Man_t * p;
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Aig_Obj_t * pObj;
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int i, nObjs;
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Aig_ManCleanData( pAig );
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p = (Fsim_Man_t *)ABC_ALLOC( Fsim_Man_t, 1 );
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memset( p, 0, sizeof(Fsim_Man_t) );
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p->pAig = pAig;
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p->nPis = Saig_ManPiNum(pAig);
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p->nPos = Saig_ManPoNum(pAig);
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p->nCis = Aig_ManPiNum(pAig);
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p->nCos = Aig_ManPoNum(pAig);
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p->nNodes = Aig_ManNodeNum(pAig);
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nObjs = p->nCis + p->nCos + p->nNodes + 2;
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p->pFans0 = ABC_ALLOC( int, nObjs );
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p->pFans1 = ABC_ALLOC( int, nObjs );
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p->pRefs = ABC_ALLOC( int, nObjs );
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p->vCis2Ids = Vec_IntAlloc( Aig_ManPiNum(pAig) );
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// add objects (0=unused; 1=const1)
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p->pFans0[0] = p->pFans1[0] = 0;
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p->pFans0[1] = p->pFans1[1] = 0;
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p->pRefs[0] = 0;
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p->nObjs = 2;
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pObj = Aig_ManConst1( pAig );
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pObj->iData = 1;
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p->pRefs[1] = Aig_ObjRefs(pObj);
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if ( p->pRefs[1] )
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p->nCrossCut = 1;
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Aig_ManForEachPi( pAig, pObj, i )
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if ( Aig_ObjRefs(pObj) == 0 )
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Fsim_ManCreate_rec( p, pObj );
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Aig_ManForEachPo( pAig, pObj, i )
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Fsim_ManCreate_rec( p, pObj );
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assert( Vec_IntSize(p->vCis2Ids) == Aig_ManPiNum(pAig) );
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assert( p->nObjs == nObjs );
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// check references
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assert( p->nCrossCut == 0 );
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Aig_ManForEachObj( pAig, pObj, i )
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{
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assert( p->pRefs[pObj->iData] == 0 );
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p->pRefs[pObj->iData] = Aig_ObjRefs(pObj);
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}
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// collect flop outputs
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p->vLos = Vec_IntAlloc( Aig_ManRegNum(pAig) );
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Saig_ManForEachLo( pAig, pObj, i )
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Vec_IntPush( p->vLos, pObj->iData );
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// collect flop inputs
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p->vLis = Vec_IntAlloc( Aig_ManRegNum(pAig) );
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Saig_ManForEachLi( pAig, pObj, i )
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Vec_IntPush( p->vLis, pObj->iData );
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// determine the frontier size
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p->nFront = 1 + (int)(1.1 * p->nCrossCutMax);
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return p;
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}
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/**Function*************************************************************
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Synopsis [Deletes fast simulation manager.]
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Description []
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SideEffects []
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SeeAlso []
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***********************************************************************/
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void Fsim_ManDelete( Fsim_Man_t * p )
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{
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Vec_IntFree( p->vCis2Ids );
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Vec_IntFree( p->vLos );
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Vec_IntFree( p->vLis );
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ABC_FREE( p->pDataAig2 );
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ABC_FREE( p->pDataAig );
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ABC_FREE( p->pFans0 );
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ABC_FREE( p->pFans1 );
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ABC_FREE( p->pRefs );
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ABC_FREE( p->pDataSim );
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ABC_FREE( p->pDataSimCis );
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ABC_FREE( p->pDataSimCos );
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ABC_FREE( p->pData1 );
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ABC_FREE( p->pData2 );
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ABC_FREE( p );
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}
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/**Function*************************************************************
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Synopsis [Testing procedure.]
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Description []
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SideEffects []
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SeeAlso []
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***********************************************************************/
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void Fsim_ManTest( Aig_Man_t * pAig )
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{
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Fsim_Man_t * p;
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p = Fsim_ManCreate( pAig );
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Fsim_ManFront( p, 0 );
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Fsim_ManDelete( p );
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}
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////////////////////////////////////////////////////////////////////////
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/// END OF FILE ///
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////////////////////////////////////////////////////////////////////////
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ABC_NAMESPACE_IMPL_END
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