[arch-dev-public] RFC: Use x86_64-v2 architecture
NicoHood
archlinux at nicohood.de
Wed Mar 3 08:33:58 UTC 2021
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
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