Yes, you could in principle convert any memory within a given loop into a separate unit. You just gotta pick between the tradeoffs between having more I/O and s

Yes, you could in principle convert any memory within a given loop into a separate unit. You just gotta pick between the tradeoffs between having more I/O and software/hardware units, versus having more memory within specific software/hardware units. You just gotta find a balance that works for your requirements and constraints. In my application (it was medical devices), we found that stateful loops fit nicely.