diff options
Diffstat (limited to 'src/aig/gia/giaDup.c')
| -rw-r--r-- | src/aig/gia/giaDup.c | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/src/aig/gia/giaDup.c b/src/aig/gia/giaDup.c index b79f7b8b..c861f23b 100644 --- a/src/aig/gia/giaDup.c +++ b/src/aig/gia/giaDup.c @@ -1818,6 +1818,158 @@ Gia_Man_t * Gia_ManTransformMiter( Gia_Man_t * p ) /**Function************************************************************* + Synopsis [Performs 'zero' and 'undc' operation.] + + Description [The init string specifies 0/1/X for each flop.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Gia_Man_t * Gia_ManDupZeroUndc( Gia_Man_t * p, char * pInit ) +{ + Gia_Man_t * pNew; + Gia_Obj_t * pObj; + int CountPis = Gia_ManPiNum(p), * pPiLits; + int i, iResetFlop = -1; + // map X-valued flops into new PIs + assert( (int)strlen(pInit) == Gia_ManRegNum(p) ); + pPiLits = ABC_FALLOC( int, Gia_ManRegNum(p) ); + for ( i = 0; i < Gia_ManRegNum(p); i++ ) + if ( pInit[i] == 'x' || pInit[i] == 'X' ) + pPiLits[i] = CountPis++; + // create new manager + pNew = Gia_ManStart( Gia_ManObjNum(p) ); + pNew->pName = Abc_UtilStrsav( p->pName ); + pNew->pSpec = Abc_UtilStrsav( p->pSpec ); + Gia_ManConst0(p)->Value = 0; + // create primary inputs + Gia_ManForEachPi( p, pObj, i ) + pObj->Value = Gia_ManAppendCi( pNew ); + // create additional primary inputs + for ( i = Gia_ManPiNum(p); i < CountPis; i++ ) + Gia_ManAppendCi( pNew ); + // create flop outputs + Gia_ManForEachRo( p, pObj, i ) + pObj->Value = Gia_ManAppendCi( pNew ); + // create reset flop output + if ( CountPis > Gia_ManPiNum(p) ) + iResetFlop = Gia_ManAppendCi( pNew ); + // update flop outputs + Gia_ManForEachRo( p, pObj, i ) + { + if ( pInit[i] == '1' ) + pObj->Value = Abc_LitNot(pObj->Value); + else if ( pInit[i] == 'x' || pInit[i] == 'X' ) + pObj->Value = Gia_ManAppendMux( pNew, iResetFlop, pObj->Value, Gia_Obj2Lit(pNew, Gia_ManPi(pNew, pPiLits[i])) ); + else if ( pInit[i] != '0' ) + assert( 0 ); + } + ABC_FREE( pPiLits ); + // build internal nodes + Gia_ManForEachAnd( p, pObj, i ) + pObj->Value = Gia_ManAppendAnd( pNew, Gia_ObjFanin0Copy(pObj), Gia_ObjFanin1Copy(pObj) ); + // create POs + Gia_ManForEachPo( p, pObj, i ) + pObj->Value = Gia_ManAppendCo( pNew, Gia_ObjFanin0Copy(pObj) ); + // create flop inputs + Gia_ManForEachRi( p, pObj, i ) + if ( pInit[i] == '1' ) + pObj->Value = Gia_ManAppendCo( pNew, Abc_LitNot(Gia_ObjFanin0Copy(pObj)) ); + else + pObj->Value = Gia_ManAppendCo( pNew, Gia_ObjFanin0Copy(pObj) ); + // create reset flop input + if ( CountPis > Gia_ManPiNum(p) ) + Gia_ManAppendCo( pNew, 1 ); + Gia_ManSetRegNum( pNew, Gia_ManRegNum(p) + (int)(CountPis > Gia_ManPiNum(p)) ); + return pNew; +} + +/**Function************************************************************* + + Synopsis [Creates miter of two designs.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Gia_Man_t * Gia_ManMiter2( Gia_Man_t * pStart, char * pInit, int fVerbose ) +{ + Vec_Int_t * vCoValues0, * vCoValues1; + Gia_Man_t * pNew, * pUndc, * pTemp; + Gia_Obj_t * pObj; + char * pInitNew; + int i, k; + // normalize the manager + pUndc = Gia_ManDupZeroUndc( pStart, pInit + Gia_ManRegNum(pStart) ); + // create new init string + pInitNew = ABC_ALLOC( char, Gia_ManPiNum(pUndc) ); + for ( i = 0; i < Gia_ManPiNum(pUndc); i++ ) + { + assert( pInit[i] == 'x' || pInit[i] == 'X' ); + pInitNew[i] = pInit[i]; + } + for ( i = k = Gia_ManPiNum(pUndc); i < Gia_ManCiNum(pUndc); i++ ) + if ( pInit[i] == 'x' || pInit[i] == 'X' ) + pInitNew[k++] = pInit[i]; + pInitNew[k] = 0; + assert( k == Gia_ManPiNum(pUndc) ); + // derive miter + pNew = Gia_ManStart( Gia_ManObjNum(pUndc) ); + pNew->pName = Abc_UtilStrsav( pUndc->pName ); + pNew->pSpec = Abc_UtilStrsav( pUndc->pSpec ); + Gia_ManConst0(pUndc)->Value = 0; + Gia_ManHashAlloc( pNew ); + // build one side + Gia_ManForEachPi( pUndc, pObj, i ) + pObj->Value = Gia_ManAppendCi( pNew ); + Gia_ManForEachRo( pUndc, pObj, i ) + pObj->Value = Gia_ManAppendCi( pNew ); + Gia_ManForEachAnd( pUndc, pObj, i ) + pObj->Value = Gia_ManHashAnd( pNew, Gia_ObjFanin0Copy(pObj), Gia_ObjFanin1Copy(pObj) ); + // collect CO values + vCoValues0 = Vec_IntAlloc( Gia_ManPoNum(pUndc) ); + Gia_ManForEachCo( pUndc, pObj, i ) + Vec_IntPush( vCoValues0, Gia_ObjFanin0Copy(pObj) ); + // build the other side + Gia_ManForEachPi( pUndc, pObj, i ) + if ( pInitNew[i] == 'x' ) + pObj->Value = Gia_Obj2Lit( pNew, Gia_ManPi(pNew, i) ); + else + pObj->Value = Gia_ManAppendCi( pNew ); + Gia_ManForEachRo( pUndc, pObj, i ) + pObj->Value = Gia_ManAppendCi( pNew ); + Gia_ManForEachAnd( pUndc, pObj, i ) + pObj->Value = Gia_ManHashAnd( pNew, Gia_ObjFanin0Copy(pObj), Gia_ObjFanin1Copy(pObj) ); + // collect CO values + vCoValues1 = Vec_IntAlloc( Gia_ManPoNum(pUndc) ); + Gia_ManForEachCo( pUndc, pObj, i ) + Vec_IntPush( vCoValues1, Gia_ObjFanin0Copy(pObj) ); + // create POs + Gia_ManForEachPo( pUndc, pObj, i ) + pObj->Value = Gia_ManAppendCo( pNew, Gia_ManHashXor( pNew, Vec_IntEntry(vCoValues0, i), Vec_IntEntry(vCoValues1, i) ) ); + // create flop inputs + Gia_ManForEachRi( pUndc, pObj, i ) + pObj->Value = Gia_ManAppendCo( pNew, Vec_IntEntry(vCoValues0, Gia_ManPiNum(pUndc)+i) ); + Gia_ManForEachRi( pUndc, pObj, i ) + pObj->Value = Gia_ManAppendCo( pNew, Vec_IntEntry(vCoValues1, Gia_ManPiNum(pUndc)+i) ); + Vec_IntFree( vCoValues0 ); + Vec_IntFree( vCoValues1 ); + ABC_FREE( pInitNew ); + // cleanup + Gia_ManHashStop( pNew ); + Gia_ManSetRegNum( pNew, 2*Gia_ManRegNum(pUndc) ); + pNew = Gia_ManCleanup( pTemp = pNew ); + Gia_ManStop( pTemp ); + return pNew; +} + +/**Function************************************************************* + Synopsis [Duplicates the AIG in the DFS order.] Description [] |