[llvm] [MemCpyOpt] lifetime markers reconstruction for Stack-move optimization (PR #68990)

[Kohei Asano via llvm-commits]

khei4 wrote:

@fmayer 
Sorry for being late for replying!

> Are you planning on submitting this eventually? For use-after-scope in sanitizers the more lifetime annotations the better.

Yes, I believe this patch resolves https://github.com/llvm/llvm-project/issues/66403.

I'm also okay with you taking over this or an alternative patch if you're interested :). I'm a little busy for a few months.

https://github.com/llvm/llvm-project/pull/68990