By default l.cust5 insns are disabled
tree7c84ccbc5f0567538bd607770020822be643003b
drwxr-xr-x - bench
drwxr-xr-x - doc
drwxr-xr-x - lib
drwxr-xr-x - lint
drwxr-xr-x - rtl
drwxr-xr-x - sim
drwxr-xr-x - syn