Andarwinux wrote:

> > Although this PR itself is insignificant, it will become a precedent - 
> > people might start adding runtime dispatch everywhere in LLVM - why not?
> 
> Is this really an issue? If we get better backwards-compatible performance, 
> how is that bad? There's no reason to give distros a reason to switch to 
> -march if we can do as well without it.

Never mind - since this won't affect x86-64-v2 users, lgtm.

Hope eventually we won't need these things anymore.

https://github.com/llvm/llvm-project/pull/180631
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