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-rw-r--r--src/aig/gia/giaMuxes.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/aig/gia/giaMuxes.c b/src/aig/gia/giaMuxes.c
index 085dca77..a4764e65 100644
--- a/src/aig/gia/giaMuxes.c
+++ b/src/aig/gia/giaMuxes.c
@@ -48,6 +48,7 @@ Gia_Man_t * Gia_ManDupMuxes( Gia_Man_t * p )
Gia_Obj_t * pObj, * pFan0, * pFan1, * pFanC;
int i;
assert( p->pMuxes == NULL );
+ Gia_ManCreateRefs( p );
// start the new manager
pNew = Gia_ManStart( 5000 );
pNew->pName = Abc_UtilStrsav( p->pName );
@@ -62,7 +63,7 @@ Gia_Man_t * Gia_ManDupMuxes( Gia_Man_t * p )
Gia_ManHashStart( pNew );
Gia_ManForEachAnd( p, pObj, i )
{
- if ( !Gia_ObjIsMuxType(pObj) )
+ if ( !Gia_ObjIsMuxType(pObj) || (Gia_ObjRefNum(p, Gia_ObjFanin0(pObj)) > 1 && Gia_ObjRefNum(p, Gia_ObjFanin1(pObj)) > 1) )
pObj->Value = Gia_ManHashAnd( pNew, Gia_ObjFanin0Copy(pObj), Gia_ObjFanin1Copy(pObj) );
else if ( Gia_ObjRecognizeExor(pObj, &pFan0, &pFan1) )
pObj->Value = Gia_ManHashXorReal( pNew, Gia_ObjLitCopy(p, Gia_ObjToLit(p, pFan0)), Gia_ObjLitCopy(p, Gia_ObjToLit(p, pFan1)) );