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

[ebotcazou at gcc dot gnu.org]

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

--- Comment #8 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> Thanks for working this out! The patch looks good to me.

No, I disagree, the patch only papers over the problem.

> I wonder how we ended up with such contradictory block at the first place?  Was
> it introduced by someone between the last expensive cfg cleanup and bb-reorder?

Yes, that's what needs to be investigated and probably fixed.