On Tue, 18 Mar 2025 20:51:46 GMT, Jatin Bhateja <[email protected]> wrote:
> Patch optimizes Vector.slice operation with constant index using x86 ALIGNR > instruction. > Intrinsification is performed using new hybrid call generator infrastructure > added along with https://github.com/openjdk/jdk/pull/30876 which performs > lazy intrinsification and in case of intrinsic failure which will happen for > variable slice index will perform procedural inlining of fallback > implementation to prevent call overhead and boxing penalties. The existing > vector API-based slice implementation is now the fallback code. > > Vector API jtreg tests pass at various AVX levels. > > Following are the performance numbers of benchmark included with the patch > over AVX512 and legacy target :- > > <img width="993" height="1053" alt="image" > src="https://github.com/user-attachments/assets/9f5bbd6e-892d-4bfe-870f-070dabe32232"; > /> > <img width="996" height="341" alt="image" > src="https://github.com/user-attachments/assets/7732ed97-131f-478b-8c50-67c6990f5ea1"; > /> > > <img width="976" height="883" alt="image" > src="https://github.com/user-attachments/assets/09f08034-3f1d-4acd-a2d9-dfb29c7d1513"; > /> > > > > Kindly review and share your feedback. > > Best Regards, > Jatin > > --------- > - [x] I confirm that I make this contribution in accordance with the [OpenJDK > Interim AI Policy](https://openjdk.org/legal/ai). This pull request has now been integrated. Changeset: 3321ea32 Author: Jatin Bhateja <[email protected]> URL: https://git.openjdk.org/jdk/commit/3321ea32551d7f73a6d33ecca24273b79fe3b218 Stats: 2262 lines in 32 files changed: 2167 ins; 1 del; 94 mod 8303762: Optimize vector slice operation with constant index using VPALIGNR instruction Reviewed-by: erfang, qamai, sviswanathan, xgong ------------- PR: https://git.openjdk.org/jdk/pull/24104
