[clang] [llvm] [llvm] Introduce MoveEntryAllocaInit pass (PR #164882)

[Nimit Sachdeva via cfe-commits]

nimit25 wrote:

> Can you please create a separate PR for the miscompilation fix? It should be independent of this change if you add the auto init metadata to the alloca.
Sorry, super confused. Do I make the miscompilation fix separately and then remove the auto init metadata check?

https://github.com/llvm/llvm-project/pull/164882