My tests on a recent (6 weeks, I'm too lazy to re-build) git snapshot from master worked reasonably well, but I didn't quite reach the full testing stage, as it was doing something (I was trying to benchmark CockroachDB on Goldmont (server atom), and the -mnative flags are just a couple weeks old on the mailinglist, and a month younger in git master.) and I didn't have time to check back. But it appeared to work when I activated the command line flags.