[9] RFR(S): 8160898: assert while replaying ciReplay file created using TieredStopAtLevel=1

[Tobias Hartmann]

Hi,

please review the following patch:

https://bugs.openjdk.java.net/browse/JDK-8160898
http://cr.openjdk.java.net/~thartmann/8160898/webrev.00/

We hit an assert while trying to replay compilation with an old replay file that does not specify the compilation level. The problem is that in this case we use CompLevel_full_optimization although TieredStopAtLevel is set to a lower tier. If no compilation level is specified in the replay file, we should use the highest available tier.

Tested with failing testcase, JPRT and RBT (running).

Thanks,
Tobias