No, I assume it was https://cgit.freedesktop.org/mesa/mesa/commit/?id=25ffb8401638a07d774cfc68ab6afc7d27780dd8 as that one was reported at https://www.phoronix.com/scan.php?page=news_item&px=RadeonSI-Zen-Tuning-Merged and that is the tie the problem started.