wiki page https://wiki.freebsd.org/UsingCPUTYPE currently contains `run "llvm-tblgen -version": you will get your answer in the last line "Host CPU: ..."` This only works up to llvm-tblgen15, llvm-tblgen[16-19] do not display Host CPU or Default target. Also of note, `dmesg | head -n 25` is only of use on machines with a short uptime, those with longer uptimes will need to use `cat /var/run/dmesg.boot | head -n 25`