I already tried -addPortAsNeeded(-neverAddPort) switch of setOptMode.
As you mentioned, it didn't add ports/pins that disturbs hierarchical boundaries of the design.
But, a lot of buffer/inverter pairs were still added into the top level hierarchy.
I'm looking for another variables/options to prvevent Encounter from add new buffers(inverters) into top level hierarchy during optimization phase.
Thanks in advance.
Originally posted in cdnusers.org by basian2