Re: jdk11u: Question about the likelihood of backporting SVE support

[Xiaolin Zheng]

Hi Goetz,
Thank you for the response!
Okay, we will follow the advice.
Best Regards,
Xiaolin
------------------------------------------------------------------
From:Lindenmaier, Goetz <goetz.lindenmaier at sap.com>
Send Time:2023年2月21日(星期二) 16:25
To:郑孝林(云矅) <yunyao.zxl at alibaba-inc.com>; jdk-updates-dev <jdk-updates-dev at openjdk.org>; riscv-port-dev <riscv-port-dev-retn at openjdk.org>
Subject:RE: jdk11u: Question about the likelihood of backporting SVE support
Hi,
I think this change should not be backported to 11.
Best regards,
 Goetz.
> -----Original Message-----
> From: jdk-updates-dev <jdk-updates-dev-retn at openjdk.org> On Behalf Of
> Xiaolin Zheng
> Sent: Tuesday, February 21, 2023 8:58 AM
> To: jdk-updates-dev <jdk-updates-dev at openjdk.org>; riscv-port-dev <riscv-
> port-dev-retn at openjdk.org>
> Subject: jdk11u: Question about the likelihood of backporting SVE support
> 
> [Some people who received this message don't often get email from
> yunyao.zxl at alibaba-inc.com. Learn why this is important at
> https://aka.ms/LearnAboutSenderIdentification ]
> 
> Hi maintainers of jdk11u:
> 
> I would like to ask if it is possible for the SVE support [1] to be backported to
> jdk11u, for the maintainers' aspect. If the RISC-V backend is going to be
> backported to jdk11u, then we will face an issue that the VecA implementation
> [2] used by the backend does not exist on jdk11u. The general functionality of
> the backend, and the shared vector intrinsics [3] defined in StubRoutines will
> not get affected without VecA; though VectorAPI and vector intrinsic defined
> in C2 [4] in riscv_v.ad may not work - if one would like to know the details.
> 
> Looking forward to your reply.
> 
> Best Regards,
> Xiaolin
> 
> [1] https://bugs.openjdk.org/browse/JDK-8231441
> [2]
> https://github.com/openjdk/jdk/blob/master/src/hotspot/cpu/riscv/riscv.ad#L
> 240-L243
> [3]
> https://github.com/openjdk/jdk/blob/master/src/hotspot/cpu/riscv/stubGene
> rator_riscv.cpp#L944-L948
> [4]
> https://github.com/openjdk/jdk/blob/master/src/hotspot/cpu/riscv/riscv_v.ad
> #L1932-L1949
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mail.openjdk.org/pipermail/jdk-updates-dev/attachments/20230221/06ef4e87/attachment.htm>