[Bug libstdc++/80826] Compilation Time for many of std::map insertions

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80826

--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Using -fno-var-tracking-assignments helps too.

Inserting the right type:

 TOTAL        : 291.54        1.14       293.25        1237034 kB

Range-insert from an array of the right type:

 TOTAL        :  98.59        0.75        99.54         821507 kB