[llvm] [ARM] Port ConditionOptimizer to ARM (PR #151187)

[Hussam Alhassan via llvm-commits]

hussam-alhassan wrote:

> > > Any luck on getting this to work?
> > 
> > 
> > Which part specifically do you mean, sorry? The generalisation?
> 
> Your independent pass as a whole?

Work is ongoing, #190455 is the latest PR in the series. This new algorithm will then need to be extended to cover the cross-block case and we still need maybe 2 or 3 more TII hooks implemented. I can't make any promises as to how long this'll take, as working on it when I have some free time.

https://github.com/llvm/llvm-project/pull/151187