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3 Commits

Author SHA1 Message Date
R. Ou a618004897 coolrunner2: Fix packed register+input buffer insertion 
The register will be packed with the input buffer if and only if the
input buffer doesn't have any other loads.
 2020-03-02 00:32:57 -08:00
R. Ou a6aeee4e1a coolrunner2: Insert many more required feedthrough cells 2020-03-01 16:56:21 -08:00
R. Ou 6a0682f5a0 coolrunner2: Separate and improve buffer cell insertion pass 
The new pass will contain all of the logic for inserting "passthrough"
product term and XOR cells as appropriate for the architecture. For
example, this commit fixes connecting an input pin directly to another
output pin with no logic in between.
 2020-02-16 20:25:46 -08:00