[Bug libstdc++/95079] unorderd_map::insert_or_assign and try_emplace should only hash and mod once unless there is a rehash.

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95079

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2020-05-12

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Agreed, thanks for the analysis.