[llvm] MathExtras: avoid unnecessarily widening types (PR #95426)

[Ramkumar Ramachandra via llvm-commits]

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@@ -355,9 +372,14 @@ constexpr inline uint64_t MinAlign(uint64_t A, uint64_t B) {
   return (A | B) & (1 + ~(A | B));
 }
 
+/// Fallback when arguments aren't integral.
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artagnon wrote:

Enums, for instance.

https://github.com/llvm/llvm-project/pull/95426