RFR: 8277503: compiler/onSpinWait/TestOnSpinWaitAArch64DefaultFlags.java failed with "OnSpinWaitInst with the expected value 'isb' not found."

[Evgeny Astigeevich]

On Tue, 23 Nov 2021 15:57:24 GMT, Andrew Haley <aph at openjdk.org> wrote:

>> OnSpinWaitInst/OnSpinWaitInstCount are diagnostic options.
>> 'XX:+PrintFlagsFinal' does not print diagnostic options in release builds which causes the test failure. 
>> The fix is to use '-XX:+UnlockDiagnosticVMOptions'.
>> 
>> Testing: release and fastdebug builds
>> - `make test TEST=hotspot/jtreg/compiler/onSpinWait/TestOnSpinWaitAArch64DefaultFlags.java`: Passed
>
> Marked as reviewed by aph (Reviewer).

@theRealAph, @chhagedorn 
Thank you for reviewing.

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PR: https://git.openjdk.java.net/jdk/pull/6521