[llvm] [DAG] Reducing instructions by better legalization handling of AVGFLOORU for illegal data types (PR #99913)

[Julius Alexandre via llvm-commits]

medievalghoul wrote:

@topperc Reverting this PR, I think it got conflicted with another build. I'll create a new PR and situate this issue.

https://github.com/llvm/llvm-project/pull/99913