RFR: 8357581: [JVMCI] Add HotSpotProfilingInfo [v2]

[Doug Simon]

On Fri, 23 May 2025 06:19:42 GMT, Doug Simon <dnsimon at openjdk.org> wrote:

>> Graal is adding enhanced logic to detect deoptimization cycles and needs to be able to query a method's decompilation counter (i.e. `MethodData::_compiler_counters._nof_decompiles`).
>> This PR adds the `HotSpotProfilingInfo` interface so that such HotSpot-specific profiling info can be accessed.
>> The change looks bigger in the GitHub review UI than it really is. I have simply renamed the pre-existing `HotSpotProfilingInfo` private class as `HotSpotProfilingInfoImpl` and repurposed the `HotSpotProfilingInfo` name for the *new* public interface.
>
> Doug Simon has updated the pull request incrementally with one additional commit since the last revision:
> 
>   fix copyright

Thanks for the reviews.

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PR Comment: https://git.openjdk.org/jdk/pull/25397#issuecomment-2905036890