* config/i386/driver-i386.c (host_detect_local_cpu): Set
PROCESSOR_K8 for signature_CENTAUR_ebx with has_longmode.
<case PROCESSOR_K8>: Pass nano-3000, nano, eden-x2 or k8 for
signature_CENTAUR_ebx.
* config/i386/i386.c (ix86_option_override_internal): Add
definitions for VIA c7, samuel-2, nehemiah, esther, eden-x2, eden-x4,
nano, nano-1000, nano-2000, nano-3000, nano-x2 and nano-x4.
* doc/invoke.texi: Document new VIA -march entries.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@237534 138bc75d-0d04-0410-961f-82ee72b054a4