ir3: enable lower_pack_64_4x16

The compiler won't be able to emit pack_64_4x16. Fix infinite
optimization loop caused in nir_opt_algebraic caused by it.

Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/13223
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/35112>
1 file changed