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OptDesign adds cell with keyword FE_OCPUNCON

Hi, Was wondering what exactly is the transform optDesign -preCTS is applying in the case where i see the key word used is FE_OCPUNCON in the instance name. xyz/xyz/FE_OCPUNCON_xyx Appreciate your feed back on the same. Regards, Vishnu

wally1 over 15 years ago

Hi Vishnu, FE_OCPUNCON is used when a buffer is added or altered by optCritPath's delete buffer tree transform.
- Brian
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Vishnu Chada over 15 years ago

Thanks Brain. Any idea what could be the special condition for which this transform kicks in ? Never before have i seen such a key word in encounter timing reports. Regards, Vishnu
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wally1 over 15 years ago

Hi Vishnu, Sorry for the delay. An FE_OCPUNCON instance is an instance created by an undo (or uncommit) during the delete buffer transform during optDesign. For example, optDesign deleted the buffer, but it turns out that this change was causing a timing degradation so the cell is added back in. The cell type is the same but we update the instance name.
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