RFR: 8242379: [TESTBUG] compiler/loopopts/TestLoopUnswitchingLostCastDependency.java fails with release VMs

[jiefu(傅杰)]

Hi all,

JBS:    https://bugs.openjdk.java.net/browse/JDK-8242379
Webrev: http://cr.openjdk.java.net/~jiefu/8242379/webrev.00/

Please review this trivial fix.
It only adds -XX:+UnlockDiagnosticVMOptions in the test.

Thanks a lot.
Best regards,
Jie