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These are implemented as macros because C doesn't have templates. They are meant for implementing properly split packed 16-bit IO stores and loads, to avoid repetition in the code. Signed-off-by: Timur Kristóf <timur.kristof@gmail.com> Reviewed-by: Georg Lehmann <dadschoorse@gmail.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28768>