Exit early from pg_comp_crc32c_pmull for small inputs The vectorized path in commit fbc57f2bc had a side effect of putting more branches in the path taken for small inputs. To reduce risk of regressions, only proceed with the vectorized path if we can guarantee that the remaining input after the alignment preamble is greater than 64 bytes. That also allows removing length checks in the alignment preamble.
Reviewed-by: Nathan Bossart <[email protected]> Discussion: https://postgr.es/m/CANWCAZZ48GuLYhJCcTy8TXysjrMVJL6n1n7NP94=ig+t80y...@mail.gmail.com Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/948ef7cdc499b5226784a45ef1187ff554bf692a Modified Files -------------- src/port/pg_crc32c_armv8.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-)
