Use of register macros within common_cells

[stmach]

What's the stance on the usage of register macros from registers.svh in general and especially within this repo itself?

• Are we advocating for "safe" use of always_ff blocks by only using them through these macros?
• If so, should we replace always_ff blocks with the appropriate macros for IPs within this repo?

[zarubaf]

We do not have a recommendation on the usage of registers.svh and I think the "easiest" way would be for the maintainer of the repository to decide. We can try to start a discussion on this but I am afraid that this will result in a lot of bikeshedding.

I am in favor of using FF macros in common cells IPs, although I am not advocating to re-write everything, merely start a migration process.