RFR: 8351159: Remaining cleanups in cpu/x86 after 32-bit x86 removal [v3]

[Anton Seoane Ampudia]

On Wed, 29 Oct 2025 15:32:14 GMT, Vladimir Kozlov <kvn at openjdk.org> wrote:

>> Anton Seoane Ampudia has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 15 commits:
>> 
>>  - Merge changes from JDK-8369346
>>  - Apply review comments
>>  - Update copyright years
>>  - Reintroduce changes from JDK-8369569
>>  - Merge upstream changes
>>  - Merge x86 AD files
>>  - Roll back changes that are targeted in JDK-8354853
>>  - Cleanup _M_AMD64 from cpu/ and os_cpu/
>>  - Cleanup LP64_ONLY and NOT_LP64 from cpu/ and os_cpu/
>>  - Cleanup LP64 from os_cpu/
>>  - ... and 5 more: https://git.openjdk.org/jdk/compare/2c07214d...4e58e509
>
> @anton-seoane thank you for checking build time and confirming that it did not change.

Thanks @vnkozlov @stefank for the reviews!

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PR Comment: https://git.openjdk.org/jdk/pull/27987#issuecomment-3466899282