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

[Craig Topper via llvm-commits]

topperc wrote:

I believe what we talked about doing internally was a vp.zext to i8 then a i8 vp.merge in the loop with a vp.reduce.or after the loop. That avoids putting a vcpop.m in the loop.

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