[clang] [llvm] [Arm] Regenerate tests (NFC) (PR #121801)

[Momchil Velikov via llvm-commits]

momchil-velikov wrote:

> Instead it could perform a load with the original type and then emit an LLVM IR `bitcast`, just like it does for "C-style" 
Except that it does not work when aggregate types are involved.
Using `mem2reg,sroa` is a bit better than just `mem2reg`, even though `sroa` generates some ridiculous extra bitcasts.

https://github.com/llvm/llvm-project/pull/121801