https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99641
--- Comment #1 from Eric Botcazou <ebotcazou at gcc dot gnu.org> --- I can reproduce, it's the expansion of __builtin_memcmp.
ebotcazou at gcc dot gnu.org via Gcc-bugs Thu, 18 Mar 2021 02:58:34 -0700
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99641
--- Comment #1 from Eric Botcazou <ebotcazou at gcc dot gnu.org> --- I can reproduce, it's the expansion of __builtin_memcmp.