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aarch64/ac3dsp: simplify the end of ff_ac3_sum_square_butterfly_float_neon 

Before:                           Cortex A53     A72     A78      M1
ac3_sum_square_bufferfly_float_neon:  1005.7   516.5   224.5   194.0
After:
ac3_sum_square_bufferfly_float_neon:   981.7   504.5   223.2   189.5

Signed-off-by: J. Dekker <jdek@itanimul.li>
This commit is contained in:
Martin Storsjö 2024-04-08 13:57:05 +03:00 committed by J. Dekker
parent 1c0149359a
commit 359b6a7f8a
1 changed files with 4 additions and 12 deletions
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16
libavcodec/aarch64/ac3dsp_neon.S
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@ -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