[llvm] Jump table annotations for Linux (PR #112606)

[Eli Friedman via llvm-commits]

efriedma-quic wrote:

Oh, this is actually using the same infrastructure as D149367.  In that case, not sure why you're running into trouble if the jump destination is spilled; I'm pretty sure the code was designed to handle that case correctly.  CC @dpaoliello

https://github.com/llvm/llvm-project/pull/112606