Ahh.. Did not "do my homework" again before replying. Sorry. I believe I have to mark these as non-benchmark-able special cases. There are other ways to test whether some optimizations happen (or not), but I would not expect anyone who reports the issue to be able/willing to do that.
Therefore even though these issues are technically category 3, I'd say a JIRA is fine for those.
Unless @Erik_Eckstein or @Arnold or @Michael_Gottesman disagree.