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| author | Hao Chen <chenhao@loongson.cn> | 2020-11-06 14:35:20 +0800 |
|---|---|---|
| committer | libyuv LUCI CQ <libyuv-scoped@luci-project-accounts.iam.gserviceaccount.com> | 2022-01-20 19:25:38 +0000 |
| commit | 51de1e16f20bb93468d7c538629b40ece8420b71 (patch) | |
| tree | 63fd2042b74e810eb92e262f81378c751c7bec26 /source/cpu_id.cc | |
| parent | 90ffd5cba97a10fd606ded4580b7fbcba070f868 (diff) | |
| download | libyuv-51de1e16f20bb93468d7c538629b40ece8420b71.tar.gz | |
Add supports for loongarch LSX and LASX.
1. Add supports for LSX and LASX.
2. Three optimization functions are added in loongarch/row_lasx.cc file:
I422ToARGBRow_LASX,I422ToRGBARow_LASX,I422AlphaToARGBRow_LASX.
Bug: libyuv:912, Bug: libyuv:913
Change-Id: I043c2704f99a5215724b5c0b7f97e6bf5f7a199b
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/3329189
Reviewed-by: Frank Barchard <fbarchard@chromium.org>
Commit-Queue: Frank Barchard <fbarchard@chromium.org>
Diffstat (limited to 'source/cpu_id.cc')
| -rw-r--r-- | source/cpu_id.cc | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/source/cpu_id.cc b/source/cpu_id.cc index 25b91012..43953886 100644 --- a/source/cpu_id.cc +++ b/source/cpu_id.cc @@ -197,6 +197,31 @@ LIBYUV_API SAFEBUFFERS int MipsCpuCaps(const char* cpuinfo_name) { return flag; } +// TODO(fbarchard): Consider read_loongarch_ir(). +#define LOONGARCH_CFG2 0x2 +#define LOONGARCH_CFG2_LSX (1 << 6) +#define LOONGARCH_CFG2_LASX (1 << 7) + +#if defined(__loongarch__) && defined(__linux__) +LIBYUV_API SAFEBUFFERS int LoongarchCpuCaps(void) { + int flag = 0x0; + uint32_t cfg2 = 0; + + __asm__ volatile( + "cpucfg %0, %1 \n\t" + : "+&r"(cfg2) + : "r"(LOONGARCH_CFG2) + ); + + if (cfg2 & LOONGARCH_CFG2_LSX) + flag |= kCpuHasLSX; + + if (cfg2 & LOONGARCH_CFG2_LASX) + flag |= kCpuHasLASX; + return flag; +} +#endif + static SAFEBUFFERS int GetCpuFlags(void) { int cpu_info = 0; #if !defined(__pnacl__) && !defined(__CLR_VER) && \ @@ -240,6 +265,10 @@ static SAFEBUFFERS int GetCpuFlags(void) { cpu_info = MipsCpuCaps("/proc/cpuinfo"); cpu_info |= kCpuHasMIPS; #endif +#if defined(__loongarch__) && defined(__linux__) + cpu_info = LoongarchCpuCaps(); + cpu_info |= kCpuHasLOONGARCH; +#endif #if defined(__arm__) || defined(__aarch64__) // gcc -mfpu=neon defines __ARM_NEON__ // __ARM_NEON__ generates code that requires Neon. NaCL also requires Neon. |