RFR: 8341052: SHA-512 implementation using SHA-NI [v3]

[Srinivas Vamsi Parasa]

On Wed, 9 Oct 2024 18:31:41 GMT, Smita Kamath <svkamath at openjdk.org> wrote:

>> Hi, I want to submit an optimization for SHA-512 algorithm using SHA instructions (sha512msg1, sha512msg2 and sha512rnds2) . Kindly review the code and provide feedback. Thank you.
>
> Smita Kamath has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Addressed a review comment

This implementation looks good to me. 

I went through the implementation of `sha512_update_ni_x1`. Looked at it line by line and compared it to the ipsec [implementation](https://github.com/intel/intel-ipsec-mb/blob/main/lib/avx2_t4/sha512_x1_ni_avx2.asm). 

Thanks,
Srinivas Vamsi Parasa (Intel)

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Marked as reviewed by vamsi-parasa at github.com (no known OpenJDK username).

PR Review: https://git.openjdk.org/jdk/pull/20633#pullrequestreview-2361568171