https://kernel.googlesource.com/pub/scm/linux/kernel/git/ash/linux/+/2f2e9f2dd1f454f3c4f751b6f83359bc48f21096/arch/blackfin/lib/memcmp.S
arch/blackfin/lib/memcmp.S - pub/scm/linux/kernel/git/ash/linux - Git at Google
linux kernelarchblackfinlibmemcmp
https://kernel.googlesource.com/pub/scm/linux/kernel/git/kvms390/kvm-s390-vfio/+/f71f64210d698f603ab119740d1656f7bdfd3171/arch/arc/lib/memcmp.S
arch/arc/lib/memcmp.S - pub/scm/linux/kernel/git/kvms390/kvm-s390-vfio - Git at Google
linux kernelarchlibmemcmppub
https://lists.llvm.org/pipermail/libc-commits/2021-August/003783.html
[libc-commits] [PATCH] D108406: [libc] Add an optimized version for memcmp
libccommitspatchaddoptimized
https://www.unix.com/man-page/debian/3/memcmp
memcmp(3) debian man page | unix.com
Man page for memcmp(3) on debian, from the unix.com online archive.
man pagememcmpdebianunix