[Bug bootstrap/82831] [8 Regression] Broken PGO bootstrap on i586-linux-gnu after r254379

[hubicka at ucw dot cz]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82831

--- Comment #1 from Jan Hubicka <hubicka at ucw dot cz> ---
This seems previously latent bug in bb-reorder. It produces order of blocks
which
has hot blocks, then some cold blocks and then hot blocks again. 

I am not sure why this happens though.

Honza