[llvm] [LoopVectorize] Add test case for minloc reduction (PR #141556)

[Madhur Amilkanthwar via llvm-commits]

madhur13490 wrote:

@fhahn or @Mel-Chen Would any of your pending patches cause vectorization of this test case? (I am having LoopIdiomVectorize based patch ready, and I should be upstreaming that soon, but wanted to check once.)


https://github.com/llvm/llvm-project/pull/141556