
We might have some single-source phis leftover after prior optimizations. We
want to get rid of them before merging the blocks.
Fixes: 5921a19d4b
("nir: add if opt opt_if_loop_last_continue()")
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/6312
Signed-off-by: Yevhenii Kolesnikov <yevhenii.kolesnikov@globallogic.com>
Reviewed-by: Danylo Piliaiev <dpiliaiev@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16095>