[vectorIntrinsics] Integrated: 8283413: Add C2 mid-end and x86 back-end implementation for bit REVERSE and REVERSE_BYTES operation

[Jatin Bhateja]

On Mon, 21 Mar 2022 02:59:49 GMT, Jatin Bhateja <jbhateja at openjdk.org> wrote:

> Hi All,
> 
> Patch includes following changes:-
> - New C2 IR nodes to support VectorOperations.REVERSE operation.
> - X86 backend implementation for targets supporting AVX2, AVX512 and GFNI features.
> 
> Please find below the performance data of Vector API JMH micros:-
> 
> System Configuration:
> ICX: Intel(R) Xeon(R) Platinum 8380 CPU @ 2.30GHz (40C 2S)
> CLX: Intel(R) Xeon(R) Platinum 8280 CPU @ 2.70GHz (28C 2S)
> 
> ![image](https://user-images.githubusercontent.com/59989778/159196997-fd1ae2ad-37ee-4294-9928-5764707bb456.png)
> 
> 
> 
> Kindly review and share your feedback.
> 
> Regards,
> Jatin

This pull request has now been integrated.

Changeset: 86ac3730
Author:    Jatin Bhateja <jbhateja at openjdk.org>
URL:       https://git.openjdk.java.net/panama-vector/commit/86ac3730c1cebf016f7396645df265bfa46d9795
Stats:     501 lines in 23 files changed: 493 ins; 2 del; 6 mod

8283413: Add C2 mid-end and x86 back-end implementation for bit REVERSE and REVERSE_BYTES operation

Reviewed-by: xgong, sviswanathan, eliu

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PR: https://git.openjdk.java.net/panama-vector/pull/182