On Wed, 11 Oct 2023 23:40:55 GMT, Sandhya Viswanathan <sviswanat...@openjdk.org> wrote:
> > It makes sense to let `-XX:ControlIntrinsic=` overrule > > `VM_Version::is_intel()` check and enable the intrinsics when `AVX512DQ` is > > supported. > > May be it could be done as part of > https://bugs.openjdk.org/browse/JDK-8317976. It is not easy to do. You need to make sure that you not enable intrinsic by `-XX:ControlIntrinsic=` when it is not supported by hardware. I would say it is separate (second) RFE because we need to test it separately from current Zen 4 issue. Note, we are not introducing regression to AMD with these changes - code is reverted back to before previous changes [14227](https://github.com/openjdk/jdk/pull/14227). We have some time to propose patch. ------------- PR Comment: https://git.openjdk.org/jdk/pull/16124#issuecomment-1758737716
