RFR: 8256253: Defer Biased Locking obsoletion to JDK 18

[Coleen Phillimore]

On Wed, 18 Nov 2020 04:42:03 GMT, David Holmes <dholmes at openjdk.org> wrote:

>> Hi all,
>> 
>> Please review the following change to defer biased-locking obsoletion to 18, as discussed in [1].
>> I updated the special_jvm_flags table and re-enabled gtest verify_special_flags.
>> 
>> Thanks,
>> Patricio
>> 
>> [1] https://mail.openjdk.java.net/pipermail/hotspot-dev/2020-November/045454.html
>
> src/hotspot/share/runtime/arguments.cpp line 532:
> 
>> 530:   { "UseOptoBiasInlining",                 JDK_Version::jdk(15), JDK_Version::jdk(18), JDK_Version::jdk(19) },
>> 531:   { "PrintPreciseBiasedLockingStatistics", JDK_Version::jdk(15), JDK_Version::jdk(18), JDK_Version::jdk(19) },
>> 532:   { "CriticalJNINatives",                  JDK_Version::jdk(16), JDK_Version::jdk(17), JDK_Version::jdk(18) },
> 
> To maintain the table ordering this entry needs to move above the BL entries now.

So these are ordered by the second field?

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PR: https://git.openjdk.java.net/jdk/pull/1281