diff options
| author | James Almer <jamrial@gmail.com> | 2014-03-17 17:07:34 -0300 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2014-03-18 15:00:50 +0100 |
| commit | 7c8bf09eddf4fe738eb05bec68479024a66bbde9 (patch) | |
| tree | 593c8e43f2d4045af13976ec7bd206a69a9f4195 /libswresample/x86 | |
| parent | c56d25c4764fee4b7b0e94212ff279f34c8ba0c8 (diff) | |
swresample: change COMMON_CORE_INT16 asm from SSSE3 to SSE2
pshuf+paddd is slightly faster than phaddd.
The real gain is in pre-ssse3 processors like AMD K8 and K10, which get
a big boost in performance compared to the mmxext version
Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libswresample/x86')
| -rw-r--r-- | libswresample/x86/resample_mmx.h | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/libswresample/x86/resample_mmx.h b/libswresample/x86/resample_mmx.h index d96fd5a9d2..fab52f704a 100644 --- a/libswresample/x86/resample_mmx.h +++ b/libswresample/x86/resample_mmx.h @@ -23,7 +23,7 @@ #include "libswresample/swresample_internal.h" int swri_resample_int16_mmx2 (struct ResampleContext *c, int16_t *dst, const int16_t *src, int *consumed, int src_size, int dst_size, int update_ctx); -int swri_resample_int16_ssse3(struct ResampleContext *c, int16_t *dst, const int16_t *src, int *consumed, int src_size, int dst_size, int update_ctx); +int swri_resample_int16_sse2 (struct ResampleContext *c, int16_t *dst, const int16_t *src, int *consumed, int src_size, int dst_size, int update_ctx); DECLARE_ALIGNED(16, const uint64_t, ff_resample_int16_rounder)[2] = { 0x0000000000004000ULL, 0x0000000000000000ULL}; @@ -48,7 +48,7 @@ __asm__ volatile(\ "r" (dst+dst_index)\ ); -#define COMMON_CORE_INT16_SSSE3 \ +#define COMMON_CORE_INT16_SSE2 \ x86_reg len= -2*c->filter_length;\ __asm__ volatile(\ "movdqa "MANGLE(ff_resample_int16_rounder)", %%xmm0 \n\t"\ @@ -58,8 +58,10 @@ __asm__ volatile(\ "paddd %%xmm1, %%xmm0 \n\t"\ "add $16, %0 \n\t"\ " js 1b \n\t"\ - "phaddd %%xmm0, %%xmm0 \n\t"\ - "phaddd %%xmm0, %%xmm0 \n\t"\ + "pshufd $0x0E, %%xmm0, %%xmm1 \n\t"\ + "paddd %%xmm1, %%xmm0 \n\t"\ + "pshufd $0x01, %%xmm0, %%xmm1 \n\t"\ + "paddd %%xmm1, %%xmm0 \n\t"\ "psrad $15, %%xmm0 \n\t"\ "packssdw %%xmm0, %%xmm0 \n\t"\ "movd %%xmm0, (%3) \n\t"\ |