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FuTil
    • FIFO can just keep running.
    • Actually all components can just keep running.
  • Enable sematics:
    • It is fine to remove enable, just like we don't need disable. Currently FSM automatically goes from end to start stage, it is not done by disable. The transition from start to execution is also not because of enable, but a reset signal to the main component. The circuit can just keeps running and that's it.
  • Dynamic scheduling (DS) vs. static scheduling (SS):
    • It seems that dynamic scheduling gets chance to perform better in latency whenever there is a cross loop dependency, at the expense of high resource usage(i.e. no resources reusage).
    • If we want to exploit the advantage of dynamic scheduling, we need to combine it with static circuits. That is, only DS the dependent parts and SS the rest.
  • Before the fancy features, there are some basic things we can do:
    • Change the inner representation to graph (e.g. CDFG).
    • Add passes to reduce unnecessary FSMs. (e.g. a+b; b*c => (a+b)*c)
    • But then what make FuTil different from other HLS?
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