[arch-dev-public] RFC: Use x86_64-v2 architecture

[NicoHood]

On 3/2/21 12:51 PM, Allan McRae via arch-dev-public wrote:
> Hi all,
> 
> A new RFC has been opened here:
> https://gitlab.archlinux.org/archlinux/rfcs/-/merge_requests/2
> 
> Summary:
> Make -march=x86_64-v2 the default for our packages.  This assumes the
> following instruction sets which are essentially available on all but
> the oldest AMD CPUs:
> 
> CMPXCHG16B, LAHF-SAHF, POPCNT, SSE3, SSE4.1, SSE4.2, SSSE3
> 
> Please visit the above link for discussion.
> 
> Allan
> 

Is there a way to test if my system supports those instructions?

Maybe a user poll can give us a better overview how many people are
affected?

~Nico