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-rw-r--r--libavutil/arm/float_dsp_neon.S12
1 files changed, 12 insertions, 0 deletions
diff --git a/libavutil/arm/float_dsp_neon.S b/libavutil/arm/float_dsp_neon.S
index d00e59de8f..4acc406d33 100644
--- a/libavutil/arm/float_dsp_neon.S
+++ b/libavutil/arm/float_dsp_neon.S
@@ -244,3 +244,15 @@ function ff_vector_fmul_reverse_neon, export=1
2: vst1.32 {q8-q9}, [r0,:128]!
bx lr
endfunc
+
+function ff_butterflies_float_neon, export=1
+1: vld1.32 {q0},[r0,:128]
+ vld1.32 {q1},[r1,:128]
+ vsub.f32 q2, q0, q1
+ vadd.f32 q1, q0, q1
+ vst1.32 {q2},[r1,:128]!
+ vst1.32 {q1},[r0,:128]!
+ subs r2, r2, #4
+ bgt 1b
+ bx lr
+endfunc