[LV] Get FMFs from VectorBuilder in createSimpleReduction. NFC#132017

lukel97 merged 2 commits intollvm:mainllvm/llvm-project:mainfrom

lukel97:loop-vectorize/looputils-fmfs-from-vpbuilderlukel97/llvm-project:loop-vectorize/looputils-fmfs-from-vpbuilderCopy head branch name to clipboard