On Fri, 8 Aug 2025 09:36:14 GMT, Per Minborg <pminb...@openjdk.org> wrote:
>> This PR proposes to use overlapping memory areas in >> `SegmentBulkOperations::copy`, similar to what is proposed for >> `SegmentBulkOperations::fill` in https://github.com/openjdk/jdk/pull/25383. >> >> This PR passes `tier1`, `tier2`, and `tier3`testing on multiple platforms. > > Per Minborg has updated the pull request incrementally with one additional > commit since the last revision: > > Optimize copy for certain lengths The latest version improves performance further: Bytes | Base | Patch | Iprovement -- | -- | -- | -- 2 | 3.184 | 2.836 | 10.93% 3 | 3.162 | 2.833 | 10.40% 4 | 3.344 | 2.839 | 15.10% 5 | 3.31 | 2.83 | 14.50% 6 | 3.328 | 2.846 | 14.48% 7 | 3.289 | 2.841 | 13.62% 8 | 4.139 | 2.834 | 31.53% 12 | 4.709 | 2.837 | 39.75% 16 | 4.173 | 3.749 | 10.16% 24 | 4.239 | 4.097 | 3.35% 64 | 4.86 | 4.716 | 2.96% <img width="828" height="519" alt="image" src="https://github.com/user-attachments/assets/74d4aa1b-17f7-4ae6-9ff0-8e68f243be10"; /> ------------- PR Comment: https://git.openjdk.org/jdk/pull/26672#issuecomment-3167220028
