[llvm] [InstCombine] Avoid breaking FMA pattern when hoisting freeze (PR #141934)

[Harrison Hao via llvm-commits]

harrisonGPU wrote:

> We could recognize the FMA through a freeze, it will just be a pain and require handling in a few too many places

Thanks a lot, I will continue to think about it.

https://github.com/llvm/llvm-project/pull/141934