[Bug c++/81476] severe slow-down with range-v3 library compared to clang

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81476

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
For clang are you using GCC's libstdc++ or llvm's libc++?