This changeset causes performance improvements for the Cavium ThunderX2T99 micro-arch. The changeset is specific to T99. It does not affect any other micro-arch.
Tested with SPECcpu2017 and libquantum.
As an example, for the performance gains on libquantum, please see here:
https://docs.google.com/spreadsheets/d/1Lo1o2E1NjrpkwS7DvYYWsiVvPdd93h7KBaqeptMrZPY/edit?usp=sharing