[llvm] [InstCombine] Fold smin(-a, x - a) + a to smin(x, 0) (PR #167109)

[Yingwei Zheng via llvm-commits]

dtcxzyw wrote:

@ARandomDev99 Can you leave a comment in https://github.com/llvm/llvm-project/issues/166878? Then I will assign you to this issue as well. I'd expect both issues to get fixed by this patch.

https://github.com/llvm/llvm-project/pull/167109