nir/pack_bits: handle 8-bit vec8 -> 64-bit (!32321) · Merge requests · Mesa / mesa · GitLab

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Alyssa Rosenzweig requested to merge alyssa/mesa:nir/pack-8x8 into main Nov 24, 2024

What does this MR do and why?

nir/pack_bits: handle 8-bit vec8 -> 64-bit

This is a very silly case, but there's no reason not to handle it efficiently,
and this implementation is faster than the fallback. Noticed when playing with
scratch optimizaitons.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>