Add customizable FPU instructions latency settings

[simoneruffini]

Hi, Will the latency settings (FP addition, Multiplier, Division) be added to eduMIPS as in winMIPS64 or is it a non feature?

Thanks for the great work

[lupino3]

Hi @simoneruffini, thanks for opening this issue!

I am not familiar with these settings, what do they do?

[simoneruffini]

These are the setting:

They are pretty autoesplicative

[lupino3]

Sounds good, thanks! Yes, they are self-explanatory.

Due to how the FPU instructions are implemented (e.g., see FPPipeline.java), it should be easy to do it for the divider, less easy for the adder and multiplier, since they are implemented with "real" stages.

Also, the UI will need to be changed, since it currently represents individual stages for the adder and multiplier.

I don't think this is something we'll get to in the short term, to be completely honest.