RFR: 8329332: Remove CompiledMethod and CodeBlobLayout classes [v2]

[Vladimir Kozlov]

On Wed, 3 Apr 2024 17:50:15 GMT, Stefan Karlsson <stefank at openjdk.org> wrote:

>> No special rules here. I simply want to see all `virtual` methods explicitly and `override` is required by C++.
>> I would like to keep it this way in these changes. I am investigating possibility to convert all these virtual methods to normal one to remove virtual table and virtual pointer (8 bytes) from CodeBlob class.
>
> `override` is not required by C++. You do however mark all virtual methods with `override` if any of the functions are marked with `override`. I think it would be good to have a HotSpot code style discussion about this (but not in this RFE).

I put `virtual/override` cleanup in CodeBlob as additional suggestion in followup RFE JDK-8329628.

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PR Review Comment: https://git.openjdk.org/jdk/pull/18554#discussion_r1550370826