On Thu, 18 Jun 2026 12:38:37 GMT, Ferenc Rakoczi <[email protected]> wrote:
>> An aarch64 implementation of the MontgomeryIntegerPolynomial256.mult() >> method and IntegerPolynomial.conditionalAssign(). Since 64-bit >> multiplication is not supported on Neon and manually performing this >> operation with 32-bit limbs is slower than with GPRs, a hybrid neon/gpr >> approach is used. Neon instructions are used to compute intermediate values >> used in the last two iterations of the main "loop", while the GPRs compute >> the first few iterations. At the method level this improves performance by >> ~9% and at the API level roughly 5%. >> >> >> >> --------- >> - [x] I confirm that I make this contribution in accordance with the >> [OpenJDK Interim AI Policy](https://openjdk.org/legal/ai). > > Ferenc Rakoczi has updated the pull request incrementally with one additional > commit since the last revision: > > Added some comments Honestly, I have not read the patch with any sort of Reviewer-like scrutiny, so I'll defer to Andrew. Please merge from master to get the clean GHA run. I think the only remaining bit is that `UseIntPolyIntrinsics` should be somewhere in `AOTCODECACHE_CONFIGS_AARCH64_DO` or even in `AOTCODECACHE_CONFIGS_GENERIC_DO`. ------------- PR Comment: https://git.openjdk.org/jdk/pull/30941#issuecomment-4742726355
