[falcrist]

Aside from hardware prototyping, this seems to be the primary benefit of FPGAs. Much like if you assembled a system from glue logic, all of the operations in the pipeline and across the entire subsystem can happen simultaneously and often asynchronously with the only limitations being on clocked devices like flipflops and gated latches... and obviously whatever propagation delays the logic gates have (along with any protection from race conditions)

Admittedly, I haven't had the opportunity to play with FPGAs very often in my professional career, but the limited experience I've had with them showed me you need an entirely different mindset when programming in a hardware description language. With assembly everything is global, and similarly with FPGAs almost everything is asynchronous and parallel.