rmuir commented on code in PR #13651:
URL: https://github.com/apache/lucene/pull/13651#discussion_r1731174206
##########
lucene/core/src/java21/org/apache/lucene/internal/vectorization/PanamaVectorUtilSupport.java:
##########
@@ -761,4 +763,81 @@ private static int squareDistanceBody128(MemorySegment a,
MemorySegment b, int l
// reduce
return acc1.add(acc2).reduceLanes(ADD);
}
+
+ @Override
+ public long ipByteBinByte(byte[] q, byte[] d) {
+ if (VECTOR_BITSIZE == 128) {
Review Comment:
@ChrisHegarty I'm confused about this, what if machine has avx-256? Also
since this uses integers there must be a check for
`PanamaVectorConstants.HAS_FAST_INTEGER_VECTORS`. on machines without avx,
`VECTOR_BITSIZE` of 128 will be claimed, but any operations will be 30x slower.
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