[FFmpeg-devel] [PATCH] lavc/vc1dsp: R-V V inv_trans

[flow gg]

I'm sorry for my carelessness.It's because I used to build and run
manually, but now I've switched to a script to do it, so I accidentally
missed the error.I will modify the script and to avoid this kind of issue
in the future.

libavcodec/riscv/vc1dsp_rvv.S:35: Error: improper CSRxI immediate

Changed.

Rémi Denis-Courmont <remi at remlab.net> 于2023年12月6日周三 04:11写道：

> Le tiistaina 5. joulukuuta 2023, 21.25.12 EET flow gg a écrit :
> > > This block can be folded into the next. You don't need to check VLENB
> >
> > twice.
> >
> > Changed.
> >
> > > Instruction scheduling could be better, especially on in-order CPUs.
> >
> > I put the vload at the front, and then proceeded with the t2 operation,
> but
> > I'm not sure...
> >
> > > You don't need to reset the AVL here, just pass zero.
> >
> > Changed.
> >
> > > vsetivli
> >
> > Changed.
>
> You changed more than I asked for. The immediate AVL is a 5-bit unsigned
> integer, so it should not be possible to assemble 32 or 64, unless you
> have a
> preprocessor that silently rewrites `vsetivli` into `vsetvli` (If so, that
> sounds very iffy because `vsetivli zero` has no scratch X register to work
> with).
>
> FWIW CanMV-K230 boards are on sale for under 500 RMB.
>
> --
> レミ・デニ-クールモン
> http://www.remlab.net/
>
>
>
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