[12] RFR (T): 8146090: java/lang/ref/ReachabilityFenceTest.java fails with -XX:+DeoptimizeALot

[Vladimir Ivanov]

> I just added a query to the bug report. I can't tell what other flags 
> get tested in same run that uses DeoptimizeALot. Is it better to exclude 
> the test from all such runs, or to force DeoptimizeALot off in the @run 
> lines?

The flag is used in hs-comp testing (tier7-8) and it turns on 
heavyweight stress mode. The actual flag combinations being tested are:

   -ea -esa -XX:CompileThreshold=100 -server -XX:[+-]TieredCompilation 
[-Xcomp] -XX:+DeoptimizeALot

I'm in favor of excluding the test, since I don't see much value in 
running the test with the flag explicitly disabled: it duplicates 
testing in other configurations.

> PS. Please update the copyright line to add 2018.
Sure, will do.

Best regards,
Vladimir Ivanov