Use pg_bitutils for HyperLogLog. Using pg_leftmost_one_post32() yields substantial performance benefits. Backpatching to version 13 because HLL is used for HashAgg improvements in 9878b643, which was also backpatched to 13. Reviewed-by: Peter Geoghegan Discussion: https://postgr.es/m/CAH2-WzkGvDKVDo+0YvfvZ+1CE=iCi88DCOGFF3i1hTGGaxcKPw@mail.gmail.com Backpatch-through: 13 Branch ------ REL_13_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/07cbcdd00c2465a844513f14b7a96232013d3129 Modified Files -------------- src/backend/lib/hyperloglog.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-)
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