https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118855
--- Comment #4 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Jonathan Wakely <r...@gcc.gnu.org>: https://gcc.gnu.org/g:e8ad697a75b0870a833366daf687668a57cabb6e commit r15-7648-ge8ad697a75b0870a833366daf687668a57cabb6e Author: Jonathan Wakely <jwak...@redhat.com> Date: Wed Feb 19 14:48:04 2025 +0000 libstdc++: Use new type-generic built-ins in <bit> [PR118855] This makes several functions in <bit> faster to compile, with fewer expressions to parse and fewer instantiations of __numeric_traits required. libstdc++-v3/ChangeLog: PR libstdc++/118855 * include/std/bit (__count_lzero, __count_rzero, __popcount): Use type-generic built-ins when available.