[FFmpeg-devel] Loongson Optimization Patchs and Machine Express Issuse

[周晓勇]

Ok! I will add ARCH_EXT_LIST_LOONGSON and clarify the CPU series in configure to support the older Loongson-2.
Loongson-2: 2E, 2F with GS464 core support MMI SIMD
Loongson-3: 3A1000 with GS464 core, 3B1500 with GS464V core is compatible with GS464 SIMD, the new 3A2000 with GS464E core is compatible with GS464 SIMD
GS464V means Vector and have more vector instruts
GS464E means Enhance and maybe added more SIMD later

在 2015-04-25 20:10:31，"Michael Niedermayer" <michael at niedermayer.cc> 写道：

>On Wed, Apr 22, 2015 at 02:27:11PM +0800, 周晓勇 wrote:
>> Hi Michael,
>>     We have prepared the patchs and Loongson-3A machine for you, but DHL needs consignee's phone number in case they could not contact u. Could you send me your phone number right now? I have make an appointment with courier tomorrow morning.
>>     The enclosures are our Loongson-3 patchs for ffmpeg-master based on fbdaebb29861d32acc93fa55fd13554a2ae32eb4.
>>     Cause the machine belong to the company, our boss need one Electronic Receipt to confirm that i do not keep the machine privately. Could you email me one receipt with your sign after you receive it?
>> 
>> Thanks.
>> 
>> 
>> 
>> --
>> 周晓勇 @系统研发部
>> Christian Zhou @System R & D
>> 
>> 龙芯中科技术有限公司
>> Loongson Technology Corporation Limited
>> 
>> 北京市海淀区温泉镇中关村环保科技示范园龙芯产业园2号楼
>> Loongson Industrial Park, building 2 , Zhongguancun Environmental protection park,
>> Haidian District, Beijing, China
>
>>  configure |   36 +++++++++++++++++++++++++++++++++---
>>  1 file changed, 33 insertions(+), 3 deletions(-)
>> c12c6e26378a6e67153bffe7003592b5a3973f4b  0001-configure-add-Loongson-3-support.patch
>> From 65973ecb8b667c0f75dcc808d664f72d27c52f71 Mon Sep 17 00:00:00 2001
>> From: ZhouXiaoyong <zhouxiaoyong at loongson.cn>
>> Date: Wed, 15 Apr 2015 19:50:01 +0800
>> Subject: [PATCH 01/11] configure: add Loongson-3 support
>> 
>> ---
>>  configure | 36 +++++++++++++++++++++++++++++++++---
>>  1 file changed, 33 insertions(+), 3 deletions(-)
>> 
>> diff --git a/configure b/configure
>> index 389de92..9a3f341 100755
>> --- a/configure
>> +++ b/configure
>> @@ -366,6 +366,7 @@ Optimization options (experts only):
>>    --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
>>    --disable-msa            disable MSA optimizations
>>    --disable-mipsfpu        disable floating point MIPS optimizations
>> +  --disable-loongson3      disable Loongson-3 SIMD optimizations
>>    --disable-fast-unaligned consider unaligned accesses slow
>>  
>>  Developer options (useful when working on FFmpeg itself):
>> @@ -1573,6 +1574,7 @@ ARCH_EXT_LIST_MIPS="
>>      mipsdspr1
>>      mipsdspr2
>>      msa
>> +    loongson3
>>  "
>>  
>>  ARCH_EXT_LIST_X86_SIMD="
>> @@ -1612,7 +1614,6 @@ ARCH_EXT_LIST="
>>      $ARCH_EXT_LIST_PPC
>>      $ARCH_EXT_LIST_X86
>>      $ARCH_EXT_LIST_MIPS
>> -    loongson
>>  "
>>  
>>  ARCH_FEATURES="
>> @@ -2018,6 +2019,7 @@ mipsdspr2_deps="mips"
>>  mips32r5_deps="mips"
>>  mips64r6_deps="mips"
>>  msa_deps="mips"
>> +loongson3_deps="mips"
>>  
>>  altivec_deps="ppc"
>>  ppc4xx_deps="ppc"
>
>> @@ -3717,6 +3719,16 @@ case "$arch" in
>>      ;;
>>      mips*|IP*)
>>          arch="mips"
>> +        _cpuinfo="cat /proc/cpuinfo"
>> +        pname=$($_cpuinfo | grep 'model' | cut -d ':' -f 2 | head -n 1)
>> +        case $pname in
>> +            *Loongson-3A*)
>> +            cpu="loongson3a"
>> +            ;;
>> +            *Loongson-3B*)
>> +            cpu="loongson3a"
>> +            ;;
>> +        esac
>>      ;;
>>      parisc*|hppa*)
>>          arch="parisc"
>
>applied without this hunk and without the loongson removial
>
>you can remove loongson but it should be a seperate patch and also
>remove all uses of HAVE_LOONGSON
>
>[...]
>-- 
>Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
>
>What does censorship reveal? It reveals fear. -- Julian Assange