[clang] [clang][Sema] Fix the continue and break scope for while loops (PR #152606)

[via cfe-commits]

Sirraide wrote:

> I'm not super happy with the approach I took to codegen here so I'll keep this one closed and try to get back to it starting fresh this weekend or next week.
> 
> I really wish there was some way I could come up with to statically enforce that the Sema and codegen ideas of where the continue and break scopes are so I may give some thought to that first.

If you want to, feel free to ping or DM me about it; as I said I have an idea that I think basically ‘just works’ (no guarantees though; I haven’t thought every last part of it through)

https://github.com/llvm/llvm-project/pull/152606