[Bug ipa/81128] Function multi-versioning does not work with -O

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81128

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |nathan at gcc dot gnu.org

--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
Well, I'm also not sure how it should behave. What happens currently is that we
have static alias and static resolver. Thus ipa-visibility finds out that call
to do_it_right_at_runtime can be replaced with resolve_do_it_right_at_runtime.
Then inlining happens. I'm adding Nathan who implemented ifunc support in GCC
and should know answer.

I suggest to not evaluate ifunc alias as not interposable. That would prevent
the problem.