#84148 turns off PGO optimization because it was hitting a compiler crash when consuming and old version of profile data produced by clang9 instrumented builds (https://bugzilla.redhat.com/show_bug.cgi?id=1827282). The intention is to quickly flow the change into our optimization repo, then collect and ingest the new data so we can turn optimization back on.
This issue tracks turning PGO optimization back on.