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Re: [Qemu-devel] [TCG SIMD] 128 bit SIMD support in the TCG backend
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From: |
Richard Henderson |
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Subject: |
Re: [Qemu-devel] [TCG SIMD] 128 bit SIMD support in the TCG backend |
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Date: |
Mon, 10 Dec 2018 09:33:53 -0600 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.3.1 |
On 12/10/18 8:37 AM, Ancuta, Cristian wrote:
> Hi,
>
> Hope this is the right place for this question.
>
> I was wondering whether the TCG i386 backend is currently able to generate
> SIMD code ( vector loads/store, moves, vector arithmetic, etc ).
Yes, it is.
> Looking around on patchwork I found these patches:
>
> https://patchwork.kernel.org/project/qemu-devel/list/?submitter=172151
>
> They seem to implement the vector support that I'd be interested in
> (including support for tcg_gen_qemu_<ld/st>_v128 ) but I guess the patches
> didn't make it into any stable version?
They made it in with a different form.
See tcg/tcg-op-gvec.[ch] and how those are used within target/arm/.
We do not yet use the infrastructure for targets other than ARM, though Mark
Cave-Ayland has just posted a patch set that begins conversion of target/ppc/.
r~