[Mesa-dev] [RFC 31/31] nir: Add a bool to float32 lowering pass

[Alyssa Rosenzweig]

> Right.  Sorry.  I forgot who's working on what chip these days.  Maybe Ilia
> can CC the right person.

No worries at all! It may well have been me (I had touched the b2f code;
our hardware lacks a dedicated instruction and needs `iand 1.0` to do
the conversion). I'm not sure which hardware lacks native integers these
days.