From: Aleksandar Markovic <firstname.lastname@example.org> To: Taylor Simpson <email@example.com> Cc: "Alessandro Di Federico" <firstname.lastname@example.org>, "email@example.com" <firstname.lastname@example.org>, "email@example.com" <firstname.lastname@example.org>, "Niccolò Izzo" <email@example.com> Subject: Re: QEMU for Qualcomm Hexagon - KVM Forum talk and code available Date: Tue, 5 Nov 2019 01:05:20 +0100 [thread overview] Message-ID: <CAL1e-=jvmJNiZR4iLDL-97qm=v+2s0cwn5YTzJQ=JZ_gwOe4tQ@mail.gmail.com> (raw) In-Reply-To: <BYAPR02MB48863165DEE32E5C563E93F4DE650@BYAPR02MB4886.namprd02.prod.outlook.com> [-- Attachment #1: Type: text/plain, Size: 1892 bytes --] On Friday, October 25, 2019, Taylor Simpson <firstname.lastname@example.org> wrote: > We would like inform the you that we will be doing a talk at the KVM Forum > next week on QEMU for Qualcomm Hexagon. Alessandro Di Federico, Niccolo > Izzo, and I have been working independently on implementations of the > Hexagon target. We plan to merge the implementations, have a community > review, and ultimately have Hexagon be an official target in QEMU. Our > code is available at the links below. > > *https://github.com/revng/qemu-hexagon > <https://github.com/revng/qemu-hexagon>* > > *https://github.com/quic/qemu <https://github.com/quic/qemu>* > > If anyone has any feedback on the code as it stands today or guidance on > how best to prepare it for review, please let us know. > > > Hi, Taylor, Niccolo (and Alessandro too). I didn't have a chance to take a look at neither the code nor the docs, but I did attend you presentation at KVM Forum, and I found it superb and attractive, one of the best on the conference, if not the very best. I just have a couple of general questions: - Regarding the code you plan to upstream, are all SIMD instructions implemented via tcg API, or perhaps some of them remain being implemented using helpers? - Most of SIMD instructions can be viewed simply as several paralel elementary operations. However, for a given SIMD instruction set, usually not all of them fit into this pattern. For example, "horizontal add" (addind data elements from the same SIMD register), various "pack/unpack/interleave/merge" operations, and more general "shuffle/permute" operations as well (here I am not sure which of these are included in Hexagon SIMD set, but there must be some). How did you deal with them? - What were the most challenging Hexagon SIMD instructions you came accross while developing your solution? Sincerely, Aleksandar > Thanks, > > Taylor > [-- Attachment #2: Type: text/html, Size: 2968 bytes --]
next prev parent reply other threads:[~2019-11-05 0:06 UTC|newest] Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-10-25 16:26 Taylor Simpson 2019-11-01 18:29 ` Philippe Mathieu-Daudé 2019-11-04 2:35 ` Taylor Simpson 2019-11-05 0:05 ` Aleksandar Markovic [this message] 2019-11-05 16:32 ` Taylor Simpson 2019-11-12 22:52 ` Taylor Simpson 2019-11-13 10:31 ` Alex Bennée 2019-11-13 19:31 ` Taylor Simpson 2019-11-13 21:10 ` Richard Henderson 2019-11-15 0:54 ` Taylor Simpson 2019-12-17 18:14 ` Taylor Simpson 2019-12-17 18:19 ` Thomas Huth 2019-12-17 18:21 ` Peter Maydell 2019-12-17 18:41 ` Philippe Mathieu-Daudé 2019-12-17 18:44 ` Philippe Mathieu-Daudé 2019-12-18 23:50 ` Richard Henderson 2019-11-13 21:27 ` Peter Maydell 2019-11-19 9:12 ` Philippe Mathieu-Daudé
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