Ampere Altra cpu flags

[Koyan]

I wonder if someone could help me out. TLDR at the end.

I have a couple of ARM64 servers running at home (Orange Pi, Raspberry Pi, ...). Gentoo runs great on them, but compiling isn't super fast, so I'm using my Mac Mini M4 as a buildhost. It's blazing fast in comparison, and I can just set the CPU_FLAGS_ARM on the Mac Mini to the flags the Pi's support.

Now, I'm thinking about getting an ARM64 VPS. The VPS is running an Ampere Altra processor, but before I go and order that, I'd like to know exactly what CPU flags the Ampere supports, so I can know in advance if I can use the same buildhost or even the exact same binaries.

TLDR;

Does anyone know where I can find the supported CPU flags, or, even better, if anyone has an Ampere Altra server running Gentoo, could you please post the output of cpuid2cpuflags?

[pingtoo]

You can look it up at https://gpages.juszkiewicz.com.pl/arm-socs-table/arm-socs.html

[Koyan]

Thanks!