[clang] [clang][CodeGen] Allow memcpy replace with trivial auto var init (PR #84230)

[Antonio Frighetto via cfe-commits]

antoniofrighetto wrote:

@tstellar Yes, thanks (I opened a new PR for that: https://github.com/llvm/llvm-project/pull/86106). 

https://github.com/llvm/llvm-project/pull/84230