From: Richard Henderson <richard.henderson@linaro.org>
To: "Alex Bennée" <alex.bennee@linaro.org>, liuzhiwei <zhiwei_liu@c-sky.com>
Cc: peter.maydell@linaro.org, palmer@sifive.com,
qemu-riscv@nongnu.org, sagark@eecs.berkeley.edu,
kbastian@mail.uni-paderborn.de, riku.voipio@iki.fi,
qemu-devel@nongnu.org, laurent@vivier.eu,
Alistair.Francis@wdc.com, aurelien@aurel32.net
Subject: Re: [Qemu-devel] [PATCH] RISCV: support riscv vector extension 0.7.1
Date: Wed, 28 Aug 2019 09:39:24 -0700 [thread overview]
Message-ID: <876d43a4-7e57-b1c0-11b4-db20798d2098@linaro.org> (raw)
In-Reply-To: <87k1ax64io.fsf@linaro.org>
On 8/28/19 2:08 AM, Alex Bennée wrote:
> If you want to do vectors I suggest you look at the TCGvec types for
> passing pointers to vector registers to helpers. In this case you will
> want to ensure your vector registers are properly aligned.
The risc-v vector extension is very different from any other existing vector
extension. In particular, the locations of the vector elements vary
dynamically. Except for certain special cases I doubt that risc-v can make
direct use of the generic TCG vector support.
r~
next prev parent reply other threads:[~2019-08-28 16:58 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1566959818-38369-1-git-send-email-zhiwei_liu@c-sky.com>
2019-08-28 9:08 ` [Qemu-devel] [PATCH] RISCV: support riscv vector extension 0.7.1 Alex Bennée
2019-08-28 16:39 ` Richard Henderson [this message]
2019-08-29 13:35 ` liuzhiwei
2019-08-28 18:54 ` Richard Henderson
2019-08-28 20:43 ` Richard Henderson
2019-08-29 12:45 ` liuzhiwei
2019-08-29 15:09 ` Richard Henderson
2019-09-02 7:45 ` liuzhiwei
2019-09-03 14:38 ` Richard Henderson
2019-09-02 9:43 ` liuzhiwei
2019-09-03 14:21 ` Richard Henderson
2019-12-19 9:11 ` LIU Zhiwei
2019-12-19 20:38 ` Richard Henderson
2019-12-25 9:36 ` LIU Zhiwei
2019-12-28 1:14 ` Richard Henderson
2019-12-30 8:11 ` LIU Zhiwei
2020-01-05 20:19 ` Richard Henderson
2019-08-28 21:34 ` Alistair Francis
2019-08-29 12:00 ` liuzhiwei
2019-08-29 15:14 ` Richard Henderson
2019-09-02 6:54 ` liuzhiwei
2019-08-29 21:50 ` Alistair Francis
2019-08-30 9:06 ` Alex Bennée
2019-08-30 18:39 ` Alistair Francis
2019-09-02 6:36 ` liuzhiwei
[not found] ` <CAL1e-=iHangj7w+HgJ+FM=iqRLmaY-_CYeUv0gx+c8bpScb9RQ@mail.gmail.com>
[not found] ` <46ade3da-d642-bd19-7975-7dc228d401e4@c-sky.com>
2019-08-29 18:32 ` Aleksandar Markovic
[not found] ` <CAEiOBXXofjrY2=sjuMDb9dTV2fk9yUVKnr+qmf+7mg9vki6OCw@mail.gmail.com>
2019-09-02 8:17 ` [Qemu-devel] [Qemu-riscv] " liuzhiwei
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