[BUG+OPTIM]: purge: onepass_thread_singleton_removal
[BUG+OPTIM]: purge: onepass_thread_singleton_removal

mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs