RE: CRC32C Parallel Computation Optimization on ARM

Поиск
Список
Период
Сортировка
От Xiang Gao
Тема RE: CRC32C Parallel Computation Optimization on ARM
Дата
Msg-id DB9PR08MB6991993CCB00DEC607E8A912F5DCA@DB9PR08MB6991.eurprd08.prod.outlook.com
обсуждение исходный текст
Ответ на Re: CRC32C Parallel Computation Optimization on ARM  (Nathan Bossart <nathandbossart@gmail.com>)
Ответы Re: CRC32C Parallel Computation Optimization on ARM  (Nathan Bossart <nathandbossart@gmail.com>)
Список pgsql-hackers
On Thu, 26 Oct, 2023 11:37:52AM -0500, Nathan Bossart wrote:
>> We consider that a runtime check needs to be done in any scenario.
>> Here we only confirm that the compilation can be successful.
> >A runtime check will be done when choosing which algorithm.
> >You can think of us as merging USE_ARMV8_VMULL and USE_ARMV8_VMULL_WITH_RUNTIME_CHECK into USE_ARMV8_VMULL.

>Oh.  Looking again, I see that we are using a runtime check for ARM in all
>cases with this patch.  If so, maybe we should just remove
>USE_ARV8_CRC32C_WITH_RUNTIME_CHECK in a prerequisite patch (and have
>USE_ARMV8_CRC32C always do the runtime check).  I suspect there are other
>opportunities to simplify things, too.

Yes, I have been removed USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK in this patch.
IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you
arenot the intended recipient, please notify the sender immediately and do not disclose the contents to any other
person,use it for any purpose, or store or copy the information in any medium. Thank you. 

Вложения

В списке pgsql-hackers по дате отправления:

Предыдущее
От: Laurenz Albe
Дата:
Сообщение: Re: Postgres Partitions Limitations (5.11.2.3)
Следующее
От: Laurenz Albe
Дата:
Сообщение: Re: Version 14/15 documentation Section "Alter Default Privileges"