[llvm] [LV][EVL] Support fixed-order recurrence idiom with EVL tail folding. (PR #124093)

[Luke Lau via llvm-commits]

https://github.com/lukel97 commented:

Thanks, this looks sensible and correct to me! I only have some small suggestions and questions, e.g. do we need to fix all ExtractFromEnd instructions

https://github.com/llvm/llvm-project/pull/124093