[llvm] [LV] Handle FSub Partial Reductions (PR #191186)

[Benjamin Maxwell via llvm-commits]

https://github.com/MacDue commented:

Could you update the failing loop vectorizer tests? You'll need to build the PowerPC backend to update `LoopVectorize/PowerPC/reg-usage.ll`.


https://github.com/llvm/llvm-project/pull/191186