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

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