[llvm] [InstCombine] Combine or-disjoint (and->mul), (and->mul) to and->mul (PR #136013)

[Jeffrey Byrnes via llvm-commits]

jrbyrnes wrote:

I plan to have 3 or so extensions on https://github.com/llvm/llvm-project/pull/135274 -- the plan is to resolve merge conflicts by extracting this code into a separate function.

https://github.com/llvm/llvm-project/pull/136013