[llvm] [LoopVectorize] Vectorize select-cmp reduction pattern for increasing integer induction variable (PR #67812)

[via llvm-commits]

ShivaChen wrote:

Although IFindLastIV can be fixed to FFindLastIV when parsing instructions, could we reject IFindLastIV with FCmpInst and AddReductionVar for FFindLastIV explicitily? 

https://github.com/llvm/llvm-project/pull/67812