[Bug rtl-optimization/83575] [8 Regression] ICE: verify_flow_info failed (error: multiple hot/cold transitions found)

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83575

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Honza, can you please have a look?  It is unclear to me what is supposed to fix
up the aux chain after fixup_partitions turns some previously hot bbs into cold
ones.