[llvm] [LoopIdiomVectorize] Recognize and transform minidx pattern (PR #144987)

[Florian Hahn via llvm-commits]

https://github.com/fhahn commented:


> > It's my understanding that the GVN improvement brings this into a form that we can at least in principle vectorize, even if it doesn't work yet. It's not either/or, we want both.
> 
> I am not sure if that is the right understanding. @fhahn do you think GVN (with a lot of work) optimized IR would or could be vectorizable?

Yes, once the loads have been simplified by GVN we should be able to tackle this in LV

https://github.com/llvm/llvm-project/pull/144987