[llvm] [BOLT] Ignore AArch64 markers outside their sections. (PR #74106)

[Jacob Bramley via llvm-commits]

jacobbramley wrote:

> Thank you for the patch! Now LGTM. I think Meta team would want to run their tests on this patch so let's wait a bit before submit.

Do we need to ping them? If so, how?

I'm in no rush, I just have this lingering tab open :-)

https://github.com/llvm/llvm-project/pull/74106