* [Qemu-devel] [TCG SIMD] 128 bit SIMD support in the TCG backend
@ 2018-12-10 14:37 Ancuta, Cristian
2018-12-10 15:33 ` Richard Henderson
0 siblings, 1 reply; 2+ messages in thread
From: Ancuta, Cristian @ 2018-12-10 14:37 UTC (permalink / raw)
To: qemu-devel@nongnu.org
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 ).
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?
Any info would be appreciated.
Thanks.
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [Qemu-devel] [TCG SIMD] 128 bit SIMD support in the TCG backend
2018-12-10 14:37 [Qemu-devel] [TCG SIMD] 128 bit SIMD support in the TCG backend Ancuta, Cristian
@ 2018-12-10 15:33 ` Richard Henderson
0 siblings, 0 replies; 2+ messages in thread
From: Richard Henderson @ 2018-12-10 15:33 UTC (permalink / raw)
To: Ancuta, Cristian, qemu-devel@nongnu.org
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~
^ permalink raw reply [flat|nested] 2+ messages in thread
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2018-12-10 14:37 [Qemu-devel] [TCG SIMD] 128 bit SIMD support in the TCG backend Ancuta, Cristian
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