da967416db
negative offsets/sizes don't make sense, and zero-extension is often easier to optimize/lower than sign-extension. Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io> Reviewed-by: Konstantin Seurer <konstantin.seurer@gmail.com> Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32564>