[llvm] [LoopVectorize] Vectorize the reduction pattern of integer min/max with index. (1/2) (PR #141467)

[Florian Hahn via llvm-commits]

https://github.com/fhahn commented:

Thanks for sharing! For reference, https://github.com/llvm/llvm-project/pull/141431 which I shared earlier sketches an attempt to handle this directly in VPlan. It has some discussion on potential trade-offs of the options.

https://github.com/llvm/llvm-project/pull/141467