[llvm] [X86] Don't always separate conditions in `(br (and/or cond0, cond1))` into separate branches (PR #81689)

[via llvm-commits]

goldsteinn wrote:

> LGTM cheers (with a couple of comments that we should followup - happy if you raise issues or want to look at them in the future).
> 
> Any other comments?

Thank you for the review, ill look into the lack of cmov/test. Have an idea for how to fix them.

https://github.com/llvm/llvm-project/pull/81689