[llvm] [LangRef][IR] Add 3 way compare <=> integer intrinsics (PR #83227)

[Miguel Raz Guzmán Macedo via llvm-commits]

miguelraz wrote:

@dc03-work , oh, that `git clang-format` is super useful, thanks a lot! I had to turn off the formatter on VSCode after it borked an entire file the first time I was working on it and was just doing it mechanically.

I'll try to add it as a prehook commit hook eventually, thanks for pointing that out!

https://github.com/llvm/llvm-project/pull/83227