[llvm-dev] [Darwin] Change compact unwind encoding generation to support CFI instructions in epilogue

[Tim Northover via llvm-dev]

Hi Violeta,

> My question is: do these changes make sense? If not, what is the right way
> to handle this?

If it was me, I'd try to make the changes depend on
FrameSetup/FrameDestroy tags (adding them if necessary). The Darwin
compact unwinder is never going to learn anything to its benefit from
a CFI instruction in the epilogue.

Cheers.

Tim.