[clang] [llvm] [Transforms] Add LifetimeMovePass (PR #144319)

[Chuanqi Xu via llvm-commits]

https://github.com/ChuanqiXu9 commented:

Lifetimes are very important and crucial. I suggest you to abstract your algorithm and send it to https://discourse.llvm.org/ for wider visibility.

https://github.com/llvm/llvm-project/pull/144319