Math functions (sine & cosine) latency

I seem to recall the math library uses lookup tables so I don't think the FPUCI will help much (it's been a while I could be wrong....) If you get your hands on a dedicated sine/cosine hardware block and integrate it as a custom instruction you can pass these to the compiler to target them directly:

-mcustom-fsins=<x> -mcustom-fcoss=<y>

<x> and <y> are the custom instruction indexes you assigned. There are double precision equivalents but I would start off with single precision since there are other things you have to take care of to target double precision.