RFR: 8357619: [JVMCI] Revisit phantom_ref parameter in JVMCINMethodData::get_nmethod_mirror [v3]

[Doug Simon]

On Mon, 2 Jun 2025 16:48:16 GMT, Doug Simon <dnsimon at openjdk.org> wrote:

>> The point of the `phantom_ref` parameter (introduced by [JDK-8234359](https://bugs.openjdk.org/browse/JDK-8234359)) of `JVMCINMethodData::get_nmethod_mirror` is to avoid the special resurrection semantics of a phantom read when reading the field during GC, which is when `JVMCINMethodData::invalidate_nmethod_mirror` can be called.
>> This case can be handled directly in `JVMCINMethodData::invalidate_nmethod_mirror` and so the `phantom_ref` parameter can be removed.
>
> Doug Simon has updated the pull request incrementally with one additional commit since the last revision:
> 
>   fixed typo

Thanks for the reviews.

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PR Comment: https://git.openjdk.org/jdk/pull/25488#issuecomment-2933646688