Checker for Github Issue https://github.com/llvm/llvm-project/issues/43453

Hi, I was able to provide a solution to this open github issue, by writing an alpha checker. Is this an acceptable patch to ask for review? Wanted to get some clarification before committing a review. Also is there a way to co-author a review using arc or does the co-authorship happen only if we get approved to push to main? Thanks!