[llvm] [SDAG] Shrink (abds (sext x) (sext y)) (PR #171865)

[David Green via llvm-commits]

https://github.com/davemgreen commented:

I think you wanted something like https://alive2.llvm.org/ce/z/5ZL4AN.

https://github.com/llvm/llvm-project/pull/171865