[llvm] [InstCombine] Avoid folding `select(umin(X, Y), X)` with non-constant mask (PR #143020)

[Konstantin Bogdanov via llvm-commits]

thevar1able wrote:

@nikic 
`remark: loop not vectorized: value that could not be identified as reduction is used outside the loop [-Rpass-analysis=loop-vectorize]`
https://clang.godbolt.org/z/sqhYnrsYb

https://github.com/llvm/llvm-project/pull/143020