RFR: 8371820: Further AES performance improvements for key schedule generation [v4]

[Shawn M Emery]

On Tue, 18 Nov 2025 21:48:12 GMT, Martin Doerr <mdoerr at openjdk.org> wrote:

>> This fix simplifies the hotspot intrinsics for some platforms and optimizes the key computation for encryption. We can save the `genInvRoundKeys` computation when we only do encryption.
>> 
>> The micro:org.openjdk.bench.javax.crypto.AESReinit benchmark results are improved by 17% for ppc64 and 26% for x86_64.
>
> Martin Doerr has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Remove K from AES_Crypt

The updated intrinsics changes looks good as well.

-------------

PR Comment: https://git.openjdk.org/jdk/pull/28299#issuecomment-3565218590