Martin Storsjö <mar...@martin.st> writes:
> Before: Cortex A53 A72 A78
> ac3_sum_square_bufferfly_float_neon: 1005.7 516.5 224.5
> After:
> ac3_sum_square_bufferfly_float_neon: 981.7 504.5 223.2
> ---
> libavcodec/aarch64/ac3dsp_neon.S | 16 ++++------------
> 1 file changed, 4 insertions(+), 12 deletions(-)
>
> diff --git a/libavcodec/aarch64/ac3dsp_neon.S
> b/libavcodec/aarch64/ac3dsp_neon.S
> index 20beb6cc50..7e97cc39f7 100644
> --- a/libavcodec/aarch64/ac3dsp_neon.S
> +++ b/libavcodec/aarch64/ac3dsp_neon.S
> @@ -103,17 +103,9 @@ function ff_ac3_sum_square_butterfly_float_neon, export=1
> fmla v3.4s, v17.4s, v17.4s
> subs w3, w3, #4
> b.gt 1b
> - faddp v0.4s, v0.4s, v0.4s
> - faddp v0.2s, v0.2s, v0.2s
> - st1 {v0.s}[0], [x0], #4
> - faddp v1.4s, v1.4s, v1.4s
> - faddp v1.2s, v1.2s, v1.2s
> - st1 {v1.s}[0], [x0], #4
> - faddp v2.4s, v2.4s, v2.4s
> - faddp v2.2s, v2.2s, v2.2s
> - st1 {v2.s}[0], [x0], #4
> - faddp v3.4s, v3.4s, v3.4s
> - faddp v3.2s, v3.2s, v3.2s
> - st1 {v3.s}[0], [x0]
> + faddp v0.4s, v0.4s, v1.4s
> + faddp v2.4s, v2.4s, v3.4s
> + faddp v0.4s, v0.4s, v2.4s
> + st1 {v0.4s}, [x0]
> ret
> endfunc
Thanks, LGTM. Pushed with M1 benchmark on Linux.
--
jd
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