ac39e7bf23
The exec mask might also be of type mask_type_loop.
Fixes: d068eb53e8 ('aco/insert_exec_mask: optimize top-level transition to exact before demote')
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17402>