[llvm] [InstCombine] Fold `(x == y) ? 0 : (x > y ? 1 : -1)` into `ucmp/scmp(x,y)` (PR #107314)

[Yingwei Zheng via llvm-commits]

dtcxzyw wrote:

See https://github.com/dtcxzyw/llvm-opt-benchmark/pull/1307/files#r1759649980. Can we remove the one-use check? Or just use `InVal->hasOneUser()` instead.


https://github.com/llvm/llvm-project/pull/107314