[llvm] [AArch64] Add support for unsigned comparisons in the condition optimizer (PR #144380)

[via llvm-commits]

AZero13 wrote:

Future PR: I don't want to have a situation where we jump via bls -> blo -> where we wanna go

Instead we can just do 

blo (if bls is first) blo-loc
then:
bls bls-loc because one implies the other.

https://github.com/llvm/llvm-project/pull/144380