On Wed, 3 Mar 2021 22:32:48 GMT, Sandhya Viswanathan <sviswanat...@openjdk.org> wrote:
> The hot path of VectorShuffle checkIndexes, wrapIndexes and laneIsValid > methods can be implemented using Vector API methods. > > For the attached jmh TestSlice.java, performance improves as below. > > Before: > Benchmark (size) Mode Cnt Score > Error Units > TestSlice.vectorSliceOrigin 1024 thrpt 5 1224.698 ± > 53.825 ops/ms > TestSlice.vectorSliceUnsliceOrigin 1024 thrpt 5 657.895 ± > 31.945 ops/ms > > After: > Benchmark (size) Mode Cnt Score > Error Units > TestSlice.vectorSliceOrigin 1024 thrpt 5 11221.532 ± > 88.616 ops/ms > TestSlice.vectorSliceUnsliceOrigin 1024 thrpt 5 6509.519 ± > 18.102 ops/ms This pull request has now been integrated. Changeset: 718d4d48 Author: Sandhya Viswanathan <sviswanat...@openjdk.org> URL: https://git.openjdk.java.net/jdk/commit/718d4d48 Stats: 43 lines in 8 files changed: 7 ins; 9 del; 27 mod 8262989: Vectorize VectorShuffle checkIndexes, wrapIndexes and laneIsValid methods Reviewed-by: psandoz ------------- PR: https://git.openjdk.java.net/jdk/pull/2819
