vm/mlvm/mixed/stress/regression/b6969574 is a performance regression test located in function test base, and there are several questions regarding its usefulness:

1. the test was written long time ago, both reflection and method handle invocations have been changed, so the test's assumptions and assertions should be reevaluated
2. as a part of functional test base, the test is run in many configuration including w/ stress flags, e.g. Xcomp. it should be checked if it really brings any value, and if all the assumptions/assertions done by the test are true in all conditions.