x86/float_dsp: add ff_vector_fmul_reverse_avx2

~20% faster than AVX.

Signed-off-by: James Almer <jamrial@gmail.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/libavutil/x86/float_dsp_init.c b/libavutil/x86/float_dsp_init.c
index 09c7a4d3b2..122087a196 100644
--- a/libavutil/x86/float_dsp_init.c
+++ b/libavutil/x86/float_dsp_init.c
@@ -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;