[llvm] [VPlan] Add support for in-loop AnyOf reductions (PR #131830)

[Philip Reames via llvm-commits]

preames wrote:

> But since this PR only adds support, should we move the discussion on enabling it/adding a tuning flag to another PR?

I want to second this request.  Even if there's a better option available for some (or even all) micro-architectures, there's no response to block the functionality.  

https://github.com/llvm/llvm-project/pull/131830