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x86/float_dsp: add ff_vector_fmul_reverse_avx2 

~20% faster than AVX.

Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer 2017-04-11 21:29:09 -03:00
parent 5b441d2981
commit f1d80bc630
2 changed files with 19 additions and 1 deletions
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15
libavutil/x86/float_dsp.asm
View File

@ -22,6 +22,9 @@
%include "x86util.asm"
SECTION_RODATA 32
pd_reverse: dd 7, 6, 5, 4, 3, 2, 1, 0
SECTION .text
;-----------------------------------------------------------------------------
@ -359,10 +362,16 @@ VECTOR_FMUL_ADD
;-----------------------------------------------------------------------------
%macro VECTOR_FMUL_REVERSE 0
cglobal vector_fmul_reverse, 4,4,2, dst, src0, src1, len
%if cpuflag(avx2)
mova m2, [pd_reverse]
%endif
lea lenq, [lend*4 - 2*mmsize]
ALIGN 16
.loop:
%if cpuflag(avx)
%if cpuflag(avx2)
vpermd m0, m2, [src1q]
vpermd m1, m2, [src1q+mmsize]
%elif cpuflag(avx)
vmovaps xmm0, [src1q + 16]
vinsertf128 m0, m0, [src1q], 1
vshufps m0, m0, m0, q0123
@ -391,6 +400,10 @@ VECTOR_FMUL_REVERSE
INIT_YMM avx
VECTOR_FMUL_REVERSE
%endif
%if HAVE_AVX2_EXTERNAL
INIT_YMM avx2
VECTOR_FMUL_REVERSE
%endif
; float scalarproduct_float_sse(const float *v1, const float *v2, int len)
INIT_XMM sse

5
libavutil/x86/float_dsp_init.c
View File

@ -67,6 +67,8 @@ void ff_vector_fmul_reverse_sse(float *dst, const float *src0,
const float *src1, int len);
void ff_vector_fmul_reverse_avx(float *dst, const float *src0,
const float *src1, int len);
void ff_vector_fmul_reverse_avx2(float *dst, const float *src0,
const float *src1, int len);
float ff_scalarproduct_float_sse(const float *v1, const float *v2, int order);
@ -101,6 +103,9 @@ av_cold void ff_float_dsp_init_x86(AVFloatDSPContext *fdsp)
fdsp->vector_fmul_add = ff_vector_fmul_add_avx;
fdsp->vector_fmul_reverse = ff_vector_fmul_reverse_avx;
}
if (EXTERNAL_AVX2_FAST(cpu_flags)) {
fdsp->vector_fmul_reverse = ff_vector_fmul_reverse_avx2;
}
if (EXTERNAL_FMA3_FAST(cpu_flags)) {
fdsp->vector_fmac_scalar = ff_vector_fmac_scalar_fma3;
fdsp->vector_fmul_add = ff_vector_fmul_add_fma3;