RFR: JDK-8292561: Make "ReplayCompiles" a diagnostic product switch [v2]

[Thomas Stuefe]

On Fri, 19 Aug 2022 23:36:12 GMT, Vladimir Kozlov <kvn at openjdk.org> wrote:

>> Thomas Stuefe has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Feedback Vladimir
>
> src/hotspot/share/ci/ciEnv.hpp line 200:
> 
>> 198:           return ciEnv::_unloaded_ciinstance_klass;
>> 199:         }
>> 200:       }
> 
> May be make this part of code as `ciReplay` method and place it into ciReplay.cpp to reduce code in .hpp file.

@vnkozlov , I moved the code into `ciObjectFactory::get_metadata()` since it seemed to fit there very well. Is that okay or do you really want it to live in ciReplay.cpp?

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PR: https://git.openjdk.org/jdk/pull/9935