[llvm] [MachineLICM] Allow hoisting loads from invariant address (PR #70796)

[David Sherwood via llvm-commits]

https://github.com/david-arm commented:

This looks a lot neater now @igogo-x86, thanks! I just have two more minor comments, then it looks good I think.

https://github.com/llvm/llvm-project/pull/70796