set_clock_uncertainty -rise -fall

[Chopper455]

Tcl procedure of SDC command set_clock_uncertainty doesn't account -rise and -fall flags for inter-clock constraint (-from and -to). It only checks if they were illegally used for single-target constraint. This causes uncertainty to stick to wrong points.

[jjcherry56]

-rise_to and -fall_to are an equivalent way to specify the edge that are supported, but I added support for -rise/-fall because they are in the sdc spec despite being redundant

[Chopper455]

The point is that these flags aren't processed even if user specifies them together with -to arguments.

if { [info exists keys(-to)] } { set to_key "-to" set to_rf "rise_fall" } elseif { [info exists keys(-rise_to)] } { set to_key "-rise_to" set to_rf "rise" } elseif { [info exists keys(-fall_to)] } { set to_key "-fall_to" set to_rf "fall" } else { set to_key "none" }

[jjcherry56]

look at 1aa348f set_clock_uncertainty -rise -fall parsing

[Chopper455]

Sorry to have bothered you. Thank you.