nir_to_tgsi: Don't vectorize 64-bit instructions, to keep virgl happy.

virglrenderer makes invalid shaders when faced with vector 64-bit
instructions, which GLSL-to-TGSI never produced.  While this doesn't fix
everything, it does get more tests running, and virgl probably the primary
consumer of 64-bit TGSI.  virgl may be deprecating its host 64-bit
support, at which point we can drop this workaround.

Reviewed-by: Gert Wollny <gert.wollny@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15014>
1 file changed