This function is big and I don't think it will won't get meaningfully
constant-propagated during inlining without LTO. Move it to a .c file so
we just have one copy, saving 2.8MB from libnir.a on an amd64 release
build.
text data bss total filename
before:
18953406 7768312 687260 27408978 build-release/driver-symlinks/iris_dri.so
9734366 5542453 481692 15758511 build-release/lib/libvulkan_intel.so
28687772 13310765 1168952 43167489 (TOTALS)
after:
15478350 7767864 687260 23933474 build-release/driver-symlinks/iris_dri.so
6810366 5541685 481692 12833743 build-release/lib/libvulkan_intel.so
22288716 13309549 1168952 36767217 (TOTALS)
No statistically significant performance difference on iris shader-db, n=8.
Reviewed-by: Matt Turner <mattst88@gmail.com>
Acked-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13889>
