On Fri, 13 Feb 2026 00:10:25 GMT, Xueming Shen <[email protected]> wrote:
> The Incubator Vector API (jdk.incubator.vector) currently uses SLEEF 3.6.1 > for providing SIMD-accelerated transcendental and elementary math functions > (e.g., sin, cos, exp, log, pow, hypot) on non-x86 platforms, (specifically > aarch64 and riscv64). > > This PR upgrades the bundled SLEEF sources used by JDK from 3.6.1 to v3.9.0. > > Imported SLEEF upstream: > - tag: 3.9.0 > - commit hash: 906ca7512ee483296780a81a21b9ca715d40dfe1 > > The update work refreshes the upstream source snapshot and regenerates the > SLEEF inline headers currently generated for the Vector API SLEEF platforms. > > Migration steps: > > 1. Imported the upstream SLEEF 3.9.0 source snapshot from the official SLEEF > repository. > 2. Copied the upstream files into the JDK SLEEF subtree, excluding > repository/documentation-only files such as `.git`, `.github`, `docs`, and > `.nojekyll`, as documented in the local SLEEF README. > 3. Normalized the imported files according to the existing JDK import > process, including whitespace/tab cleanup where needed. See > [logs](https://cr.openjdk.org/~sherman/sleef-3.9.0-upstream-import-trace.pdf) > for details > 4. Updated the SLEEF metadata in the JDK README/legal files to record the > 3.9.0 tag and exact upstream commit. > 5. Updated `make/UpdateSleefSource.gmk` for the SLEEF 3.9.0 generation flow, > including disabling SLEEF test/SSL/TLFloat pieces that are not needed for > generating the JDK inline headers. > 6. Ran `make update-sleef-source` for the Linux AArch64 and RISC-V cross > configurations. > 7. Verified and checked in the regenerated SLEEF inline headers for the > Vector API SLEEF platforms. > 8. Added a targeted HotSpot IR-framework test that verifies SLEEF-backed > Vector API transcendental operations are lowered to the native vector math > library call path on supported platforms. The test covers the SLEEF-provided > `float` and `double` unary/binary operations. > 9. Ran clean build and testing, including local Vector API jtreg testing and > internal Mach5 tier1/tier2/tier3 validation ([mach5 > results](https://mach5.us.oracle.com/mdash/jobs/xuemingshen-jdk-8376602-2-20260521-2059-45610732)). > 10. Ran a local Vector API transcendental microbenchmark comparison using > [VectorTranscendentalBenchmark2](https://cr.openjdk.org/~sherman/8376602/VectorTranscendentalBenchmark2.java); > the sampled 128-bit macOS AArch64 > [results](https://cr.openjdk.org/~sherman/vector-transcendental-benchmark2-results.pdf) > were broadly performance-neutral to modestly positive for SLEEF 3.9.0. > > --------- > - [x] I confirm that I ... This pull request has now been integrated. Changeset: 185d933b Author: Xueming Shen <[email protected]> URL: https://git.openjdk.org/jdk/commit/185d933bb9c9020dbc35daf7e664562fda538b5d Stats: 22343 lines in 168 files changed: 14683 ins; 4988 del; 2672 mod 8376602: [Vector API] Upgrade SLEEF from 3.6.1 to 3.9.0 Reviewed-by: psandoz, fyang, erikj ------------- PR: https://git.openjdk.org/jdk/pull/29703
