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The-OpenROAD-Project / OpenSTA

OpenSTA engine
GNU General Public License v3.0
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STA parser does not support nets name with "forward slashs" #28

Closed egiacomin closed 5 years ago

egiacomin commented 5 years ago

Hello, Currently using the OpenROAD flow but I get a warning during the STA Placement step:

OpenSTA Copyright (c) 2018, Parallax Software, Inc. License GPLv3: GNU GPL version 3 http://gnu.org/licenses/gpl.html

This is free software, and you are free to change and redistribute it under certain conditions; type show_copying' for details. This program comes with ABSOLUTELY NO WARRANTY; for details typeshow_warranty'. INFO: Now linking: grid_clb INFO: Successfully linked: grid_clb Warning: , line 1 net grid_clb0\/fle_2ff_phy_1D0 not found.

My Verilog was a structural Verilog design which I fed into Synopsys DC in order to get a flat design. As such, many net names have "/" in their name. I replaced those by underscore and it seems to alleviate the issue. Is the parser not capable of dealing with "/" characters?

mgwoo commented 5 years ago

Hi egiacomin,

This issue is for TD-RePlAce, not for OpenSTA. The warning you're facing is not a problem at all. (I still have to learn about SPEF delimiter's rule in OpenSTA. I wrote a simple checker whenever OpenSTA is instantiated in here (inside RePlAce))

I'll remove such a warning in the near future.
(RePlAce would be rewritten in the near feature)

egiacomin commented 5 years ago

Thanks for the quick reply. I'll ignore those warnings for now then.