uschindler commented on PR #14896:
URL: https://github.com/apache/lucene/pull/14896#issuecomment-3063828693

   > To move this forward, I believe that we should try to add detection of 
`UseSVE` and AVX2 to `Constants.java`, then a `HAS_FAST_COMPRESS` constant 
(akin to `HAS_FAST_VECTOR_FMA`), and finally replace the check on the number of 
lanes in `PanamaVectorUtil` with a check on this new constant?
   
   UseSVE should be easy to detect in the same way like that: 
https://github.com/apache/lucene/blob/633bb1c68edf7a63885396e5e504c439d92dea92/lucene/core/src/java/org/apache/lucene/util/Constants.java#L93-L95
   
   For AVX, I think you have to parse the option as integer and compare `>=2` 
or like that.


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