Exemplo n.º 1
0
word Gia_ObjComputeTruthTable6Lut( Gia_Man_t * p, int iObj, Vec_Wrd_t * vTemp )
{
    int i, Fanin;
    assert( Vec_WrdSize(vTemp) == Gia_ManObjNum(p) );
    assert( Gia_ObjIsLut(p, iObj) );
    Gia_LutForEachFanin( p, iObj, Fanin, i )
        Vec_WrdWriteEntry( vTemp, Fanin, s_Truth6[i] );
    assert( i <= 6 );
    Gia_ObjComputeTruthTable6Lut_rec( p, iObj, vTemp );
    return Vec_WrdEntry( vTemp, iObj );
}
Exemplo n.º 2
0
/**Function*************************************************************

  Synopsis    [Performs structural hashing on the LUT functions.]

  Description []
               
  SideEffects []

  SeeAlso     []

***********************************************************************/
void * Dsm_ManDeriveGia( void * pGia, int fUseMuxes )
{
    Gia_Man_t * p = (Gia_Man_t *)pGia;
    Gia_Man_t * pNew, * pTemp;
    Vec_Int_t * vCover, * vLeaves;
    Gia_Obj_t * pObj; 
    int k, i, iLut, iVar;
    word * pTruth;
    assert( Gia_ManHasMapping(p) );   
    // create new manager
    pNew = Gia_ManStart( 6*Gia_ManObjNum(p)/5 + 100 );
    pNew->pName = Abc_UtilStrsav( p->pName );
    pNew->pSpec = Abc_UtilStrsav( p->pSpec );
    pNew->vLevels = Vec_IntStart( 6*Gia_ManObjNum(p)/5 + 100 );
    if ( fUseMuxes )
        pNew->pMuxes = ABC_CALLOC( unsigned, pNew->nObjsAlloc );
    // map primary inputs
    Gia_ManFillValue(p);
    Gia_ManConst0(p)->Value = 0;
    Gia_ManForEachCi( p, pObj, i )
        pObj->Value = Gia_ManAppendCi(pNew);
    // iterate through nodes used in the mapping
    vLeaves = Vec_IntAlloc( 16 );
    vCover  = Vec_IntAlloc( 1 << 16 );
    Gia_ManHashStart( pNew );
    Gia_ObjComputeTruthTableStart( p, Gia_ManLutSizeMax(p) );
    Gia_ManForEachAnd( p, pObj, iLut )
    {
        if ( Gia_ObjIsBuf(pObj) )
        {
            pObj->Value = Gia_ManAppendBuf( pNew, Gia_ObjFanin0Copy(pObj) );
            continue;
        }
        if ( !Gia_ObjIsLut(p, iLut) )
            continue;
        // collect leaves
        Vec_IntClear( vLeaves );
        Gia_LutForEachFanin( p, iLut, iVar, k )
            Vec_IntPush( vLeaves, iVar );
        pTruth = Gia_ObjComputeTruthTableCut( p, Gia_ManObj(p, iLut), vLeaves );
        // collect incoming literals
        Vec_IntClear( vLeaves );
        Gia_LutForEachFanin( p, iLut, iVar, k )
            Vec_IntPush( vLeaves, Gia_ManObj(p, iVar)->Value );
        Gia_ManObj(p, iLut)->Value = Dsm_ManTruthToGia( pNew, pTruth, vLeaves, vCover );
    }
    Gia_ObjComputeTruthTableStop( p );
    Gia_ManForEachCo( p, pObj, i )
        pObj->Value = Gia_ManAppendCo( pNew, Gia_ObjFanin0Copy(pObj) );
    Gia_ManHashStop( pNew );
    Gia_ManSetRegNum( pNew, Gia_ManRegNum(p) );
    Vec_IntFree( vLeaves );
    Vec_IntFree( vCover );
/*
    Gia_ManForEachAnd( pNew, pObj, i )
    {
        int iLev  = Gia_ObjLevelId(pNew, i);
        int iLev0 = Gia_ObjLevelId(pNew, Gia_ObjFaninId0(pObj, i));
        int iLev1 = Gia_ObjLevelId(pNew, Gia_ObjFaninId1(pObj, i));
        assert( iLev == 1 + Abc_MaxInt(iLev0, iLev1) );
    }
*/
    // perform cleanup
    pNew = Gia_ManCleanup( pTemp = pNew );
    Gia_ManStop( pTemp );
    return pNew;
}