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From: Florian Weimer via Libc-alpha <libc-alpha@sourceware.org>
To: "H.J. Lu via Libc-alpha" <libc-alpha@sourceware.org>
Cc: Shen-Ta Hsieh <ibmibmibm.tw@gmail.com>
Subject: Re: [PATCH v4 2/2] x86_64: roundeven with sse4.1 support
Date: Thu, 28 May 2020 14:22:45 +0200	[thread overview]
Message-ID: <877dwwckq2.fsf@oldenburg2.str.redhat.com> (raw)
In-Reply-To: <CAMe9rOpNPxD4W5Mb1iHhJ=j-ocDifwq-7yBz0YwAgkOz5SfBgw@mail.gmail.com> (H. J. Lu via Libc-alpha's message of "Thu, 28 May 2020 05:05:32 -0700")

* H. J. Lu via Libc-alpha:

>> Here is a benchmark result on my AMD Ryzen 9 3900X system:
>
> Since we don't know or may not care SSE4 machines without AVX,
> should we make it to AVX only?

What about Goldmont/Tremont?  Those are current CPUs which do not
support AVX, but I think they have sufficient SSE4 support levels for
this change.

Thanks,
Florian


  reply	other threads:[~2020-05-28 12:22 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-05 17:23 [PATCH] Add benchtests for roundeven and roundevenf Shen-Ta Hsieh
2020-03-27 23:25 ` Joseph Myers
2020-05-02 15:02   ` [PATCH v4 1/2] math: redirect roundeven function Shen-Ta Hsieh via Libc-alpha
2020-05-02 15:02   ` [PATCH v4 2/2] x86_64: roundeven with sse4.1 support Shen-Ta Hsieh via Libc-alpha
2020-05-28 12:05     ` H.J. Lu via Libc-alpha
2020-05-28 12:22       ` Florian Weimer via Libc-alpha [this message]
2020-05-28 12:31         ` H.J. Lu via Libc-alpha
2020-05-29  8:48           ` Cui, Lili via Libc-alpha
2020-05-29 11:29             ` H.J. Lu via Libc-alpha
2020-06-01  1:28               ` Cui, Lili via Libc-alpha
2020-06-01  2:04                 ` H.J. Lu via Libc-alpha

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