RFR: 8371792: Refactor barrier loop tests out of TestIfMinMax [v2]

[Galder Zamarreño]

On Tue, 25 Nov 2025 10:05:32 GMT, Emanuel Peter <epeter at openjdk.org> wrote:

>> Galder Zamarreño has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Change copyright to Amazon
>
> test/hotspot/jtreg/compiler/gcbarriers/TestMinMaxLongLoopBarrier.java line 1:
> 
>> (failed to retrieve contents of file, check the PR for context)
> You might as well also find a better home for this test. We are trying to move away from `irTests`, and move tests to directories with the relevant "topic".

@eme64 Moved!  

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PR Review Comment: https://git.openjdk.org/jdk/pull/28385#discussion_r2567998042