zanmato1984 commented on issue #43687:
URL: https://github.com/apache/arrow/issues/43687#issuecomment-2290919509

   > We can't promise that the compiler won't generate AVX512 instructions if 
we allow it to. So, no, it looks like a bug.
   > 
   > 
   
   Thanks for the clarification. If this is a bug, then my other question 
quoted below stands no more. 
   
   > I appreciate the explanation. I now have a further question: so the minmax 
implementations for both AVX2 and AVX512 are the same (both being AVX2-level 
optimized). Dose this mean that there are two identical kernels with identical 
SIMD level in the scalar agg function minmax? (Suppose both compiler switches 
ARROW_HAVE_RUNTIME_AVX2/512 are on - which should normally be the case.)


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