RFR: 8341261: Tests assume UnlockExperimentalVMOptions is disabled by default [v2]

[Todd V. Jonker]

On Wed, 2 Oct 2024 19:03:21 GMT, Todd V. Jonker <duke at openjdk.org> wrote:

>> `-UnlockExperimentalVMOptions` isn't necessarily the default: a distro may enable it in order to default-enable other features like JVMCI/Graal.
>> 
>> I'm not entirely satisfied by adding a `@require` that only applies to a subset of the checks in a test class.  In `VMOptionWarning`, the experimental flag only applies to the first of the three scenarios it checks.  But I suspect this is a general problem with `@require`, and I'd be happy to hear suggestions on how to avoid disabling too much.
>
> Todd V. Jonker has updated the pull request incrementally with two additional commits since the last revision:
> 
>  - Refactor VMOptionWarning for better scoping of @require
>  - Use simpler vm.opt.final approach

It turns out that the other affected tests were under `compiler/rtm/*` which was removed on 2024-06-10 for JDK24: https://bugs.openjdk.org/browse/JDK-8329141

So this PR is good as-is for mainline.

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PR Comment: https://git.openjdk.org/jdk/pull/21233#issuecomment-2392537227