3 ms·

That would defeat the entire purpose: they need to be six parameters to ensure that they are all in registers. However I was considering whether they could be

That would defeat the entire purpose: they need to be six parameters to ensure that they are all in registers. However I was considering whether they could be a struct with six members passed by value. If the ABI would pass that in six registers we could get rid of the #defines, which I agree would be nicer.

ufo 6y ago
Unfortunately, I think that only structs with at most 2 words are passed via registers. Larger structs are passed via the stack. https://godbolt.org/z/frof3xjhW https://godbolt.org/z/frof3xjhW
- haberman 6y ago
  Bummer, thanks for the info.