[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 #8 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Even the unchanged code is almost acceptable with -fno-var-tracking-assignments

 TOTAL         : 357.36        1.11       359.18        1206964 kB