[Bug target/89650] [9 Regression] ICE in pre_and_rev_post_order_compute, at cfganal.c:1055 since r269119

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89650

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
There are unreachable blocks which are not allowed for
pre_and_rev_post_order_compute.  Somebody forgets to call cfg-cleanup here.