ChrisHegarty commented on PR #12311:
URL: https://github.com/apache/lucene/pull/12311#issuecomment-1560977330

   > to be clear, i'm not sure its an issue of SPECIES_PREFERRED. As you can 
see, 128-bit floating point works perfectly with `-XX:UseAVX=0`. I assume using 
SSE etc :)
   > 
   > But the integer math does not. The conversion instructions etc needed 
should all be there (sse4.1 is available): 
https://www.felixcloutier.com/x86/pmovsx . Maybe intrinsics are missing for the 
integer side.
   
   


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