(In reply to Marek Olšák from comment #10)
> However, Tonga and later hardware doesn't have the legacy dx9 opcodes for
> MUL, MAD, RCP, RSQ, and LOG and they must be emulated with a comparison (or
> V_CLASS_F32 that returns whether it's NaN/+-Inf/Denorm/+-0/etc) +
> conditional assignment. It's better to do the conditional assignment after
> every RCP than after every MUL.

Interesting, I wonder how that works out for Direct3D 9 applications. I don't
suppose there's a global switch instead like (at least some) Intel and NVIDIA
hardware has?