RFR: 8327240: Obsolete Tier2CompileThreshold/Tier2BackEdgeThreshold product flags [v3]

[Thomas Stuefe]

On Wed, 24 Apr 2024 20:17:45 GMT, Sonia Zaldana Calles <szaldana at openjdk.org> wrote:

>> Hi all, 
>> 
>> This PR removes the unused options ```Tier2CompileThreshold``` and ```Tier2BackEdgeThreshold```. 
>> 
>> Testing: 
>> - [x] Verified warning is issued as support was removed. 
>> 
>> Thanks, 
>> Sonia
>
> Sonia Zaldana Calles has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains five additional commits since the last revision:
> 
>  - formatting
>  - Merge master
>  - Adding to obsolete list
>  - Deleting usage of flag in test
>  - 8327240: Remove unused Tier2CompileThreshold/Tier2BackEdgeThreshold product flags

@SoniaZaldana I would:
- first raise the question on hotspot-compiler-dev. 
- since this is a product flag, it needs a CSR, so you need to create one. There are many examples in JBS, e.g. https://bugs.openjdk.org/browse/JDK-8320162
- then you can go ahead with this change.

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PR Comment: https://git.openjdk.org/jdk/pull/18904#issuecomment-2151508706