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| author | lixia zhang <zhanglixia-hf@loongson.cn> | 2018-07-04 18:40:48 +0800 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2018-07-20 22:53:04 +0000 |
| commit | 21be9122aadf7824efe3fc19b2a09ff253a688e1 (patch) | |
| tree | d22c41b2361d63169a0bfca4805b3b7990e5e420 /source/cpu_id.cc | |
| parent | 55f5d91f11f929c4c59c32621c3d5457cca3ab0b (diff) | |
| download | libyuv-21be9122aadf7824efe3fc19b2a09ff253a688e1.tar.gz | |
libyuv:loongson optimize compare/row/scale/rotate files with mmi.
Currently, libyuv supports MIPS SIMD Arch(MSA),
but libyuv does not supports MultiMedia Instruction(MMI)(such as loongson3a platform).
In order to improve performance of libyuv on loongson3a platform,
this provides optimize 98 functions with mmi.
BUG=libyuv:804
Change-Id: I8947626009efad769b3103a867363ece25d79629
Reviewed-on: https://chromium-review.googlesource.com/1122064
Commit-Queue: Frank Barchard <fbarchard@chromium.org>
Reviewed-by: Frank Barchard <fbarchard@chromium.org>
Diffstat (limited to 'source/cpu_id.cc')
| -rw-r--r-- | source/cpu_id.cc | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/source/cpu_id.cc b/source/cpu_id.cc index 31e24b67..2283db6a 100644 --- a/source/cpu_id.cc +++ b/source/cpu_id.cc @@ -173,6 +173,9 @@ LIBYUV_API SAFEBUFFERS int MipsCpuCaps(const char* cpuinfo_name, if (strcmp(ase, " msa") == 0) { return kCpuHasMSA; } + if (strcmp(ase, " mmi") == 0) { + return kCpuHasMMI; + } return 0; } while (fgets(cpuinfo_line, sizeof(cpuinfo_line) - 1, f)) { @@ -185,6 +188,15 @@ LIBYUV_API SAFEBUFFERS int MipsCpuCaps(const char* cpuinfo_name, } return 0; } + } else if(memcmp(cpuinfo_line, "cpu model", 9) == 0) { + char* p = strstr(cpuinfo_line, "Loongson-3"); + if (p) { + fclose(f); + if (strcmp(ase, " mmi") == 0) { + return kCpuHasMMI; + } + return 0; + } } } fclose(f); @@ -232,6 +244,8 @@ static SAFEBUFFERS int GetCpuFlags(void) { #if defined(__mips__) && defined(__linux__) #if defined(__mips_msa) cpu_info = MipsCpuCaps("/proc/cpuinfo", " msa"); +#elif defined(_MIPS_ARCH_LOONGSON3A) + cpu_info = MipsCpuCaps("/proc/cpuinfo", " mmi"); #endif cpu_info |= kCpuHasMIPS; #endif |