[Bug lto/106499] LTO runs forever in libfabric 1.15.1 linking

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106499

--- Comment #23 from Martin Liška <marxin at gcc dot gnu.org> ---
> If may I ask yet another question 😋

Sure, don't hesitate ;)

> Martin can you tell how did you manage to diagnose that it was exactly that
> cause in this case?

I noticed we spent time in inliner (perf top) and then I suspected a flatten
attribute. So 'git grep flatten' proved that.