[llvm] [LV] Improve AnyOf reduction codegen. (PR #78304)

[Arthur Eubanks via llvm-commits]

aeubanks wrote:

[c.ll.txt](https://github.com/llvm/llvm-project/files/14984426/c.ll.txt)

I believe running this through the loop vectorizer results in a miscompile, although I haven't found exactly where yet. I'm trying to compare the IR after the loop-vectorizer with and without this commit.

https://github.com/llvm/llvm-project/pull/78304