nir/lower_io_to_vector: don't merge compact varyings

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Fixes: 02bc4aabb48 ('nir/lower_io_to_vector: allow FS outputs to be vectorized')
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
1 file changed