06-03-2021 08:50 PM
I am working on complex project, I generated bitfile , bitfile got generated with a lot of slacks. When I look into implementation log I found around 100+ combinatorial loop found in Log file , but in implementation design timing report summary loops are 0.
So I want to ask which combinatorial loop I have to consider?
06-05-2021 06:45 AM
are not caused by the tools, but by your code,
Sorry, but when you simulated, this should have been fairly obvious report.
a constraint can not tell your code where to break a loop
06-05-2021 05:50 PM
If the code actually built successfully despite combinatorial loops being reported early in the build, that most likely means that the tools have made some major optimisations which removed the loops completely (eg. output was never used). You should have a hunt for the warnings about that...