rmuir commented on PR #13076: URL: https://github.com/apache/lucene/pull/13076#issuecomment-1927213508
I'm confused about the use of lookup table. naively, i'd try to just xor + popcnt: https://docs.oracle.com/en/java/javase/21/docs/api/jdk.incubator.vector/jdk/incubator/vector/VectorOperators.html#XOR https://docs.oracle.com/en/java/javase/21/docs/api/jdk.incubator.vector/jdk/incubator/vector/VectorOperators.html#BIT_COUNT I'm curious if any explicit vector code is needed actually at all. Integer.bitCount() has autovectorization support in hotspot. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: issues-unsubscr...@lucene.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@lucene.apache.org For additional commands, e-mail: issues-h...@lucene.apache.org
