Draft: nir: Smarter memcpy lowering
We no longer unroll arbitrarily large memcpys. Also, if we do fall back to emitting a loop, we're a lot smarter about it and try to do a bunch of wide loads first and then fall back to bytes.
Only build tested.
Due to an influx of spam, we have had to impose restrictions on new accounts. Please see this wiki page for instructions on how to get full permissions. Sorry for the inconvenience.
We no longer unroll arbitrarily large memcpys. Also, if we do fall back to emitting a loop, we're a lot smarter about it and try to do a bunch of wide loads first and then fall back to bytes.
Only build tested.