[llvm] [AArch64][Win] Emit SEH instructions for the swift async context-related instructions in the prologue and the epilogue. (PR #66967)

[Martin Storsjö via llvm-commits]

mstorsjo wrote:

> Thanks! How did we not run into this before?

Possibly because the strict checker for mismatches between SEH opcodes and actual prologue/epilogue instructions was added not very long ago - sometime last fall maybe...

https://github.com/llvm/llvm-project/pull/66967