[FFmpeg-devel] [PATCH] Revert "libavcodec/mips: Fix specification of instruction name"

[Jiaxun Yang]

在 2021/7/22 下午9:02, yinshiyou-hf at loongson.cn 写道:
> I mean the upstream compiler not support ’pxor‘ yet, not mean MMI.
> upstream gcc supports 'xor' for 2F and 3A is true, user can use it with old version ffmpeg?
> According to the latest instruction mannual, we should use 'pxor' but not 'xor' which is used fir general register.
> It's better add support to the upstream compiler.
>
> > > 3) If you are using on other mips platform which MMI is unsupported, and MMI havn't disabled automaticlly.
> > >   we will fix it soon.
> >
> > MMI should be enable for generic MIPS platform as they intend to run on
> > Loongson as well.
> >
> >
> > > 4) on the safe side, I suggest to add pxor instruction check in configure check.
> >
> > Or ifdef for clang only?
> >
> > Thanks.
> >
> I think it's better to add support for upstream compiler.
> To avoid compiler error, we can upload a patch to check 'pxor' in configure first.</jinbo at loongson.cn></jiaxun.yang at flygoat.com></jiaxun.yang at flygoat.com></jinbo at loongson.cn></jiaxun.yang at flygoat.com></jinbo at loongson.cn></ffmpeg-devel at ffmpeg.org></jiaxun.yang at flygoat.com>

Hi,

I'm trying to get that part fixed in upstream toolchain, I wonder that 
beside these four instructions, do we have other instructions renamed?

I have a list of MMI instructions sharing name with regular instructions.

     add
     addu
     dadd
     sub
     subu
     dsub
     or
     sll
     dsll
     xor
     nor
     and
     srl
     dsrl
     sra
     dsra
     sequ
     sltu
     sleu
     seq
     slt
     sle

Could you please help me check your manual?

Thanks.


- Jiaxun

> _______________________________________________
> ffmpeg-devel mailing list
> ffmpeg-devel at ffmpeg.org
> https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
>
> To unsubscribe, visit link above, or email
> ffmpeg-devel-request at ffmpeg.org with subject "unsubscribe".