[Bug libstdc++/96088] Range insertion into unordered_map is less effective than a loop with insertion

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96088

--- Comment #11 from Jonathan Wakely <redi at gcc dot gnu.org> ---
tl;dr:

>     The remaining regressions in the number of allocations and temporaries
>     should be addressed separately, with more conservative optimizations
>     specific to std::string. That is not part of this commit.