[Bug c/56068] -march=native creates Illegal instruction on KVM guests

[jpyeron at pdinc dot us]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56068

--- Comment #3 from Jason Pyeron <jpyeron at pdinc dot us> 2013-01-21 17:12:15 UTC ---
mockbuild@centos6-64bit-builder ~/build/BUILD/tmp (mock-chroot)
$ cat /proc/cpuinfo
processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 6
model           : 13
model name      : QEMU Virtual CPU version (cpu64-rhel6)
stepping        : 3
cpu MHz         : 2194.498
cache size      : 512 KB
fpu             : yes
fpu_exception   : yes
cpuid level     : 4
wp              : yes
flags           : fpu de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat
pse36 clflush mmx fxsr sse sse2 syscall nx lm up unfair_spinlock pni cx16
hypervisor lahf_lm abm sse4a
bogomips        : 4388.99
TLB size        : 1024 4K pages
clflush size    : 64
cache_alignment : 64
address sizes   : 48 bits physical, 48 bits virtual
power management: