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9fb97215df
This change removes one extra floating point operation and simplifies load operations at the beginning of the loop by using dedicated register for each of the 5 pointers and interleaving it with calculations. The first case seems to be a bit slower, but the performance increase is substantial in the other two. A78 before: postfilter_15_neon: 1684.8 ( 4.23x) postfilter_512_neon: 1395.5 ( 5.10x) postfilter_1022_neon: 1357.0 ( 5.25x) After: postfilter_15_neon: 1742.2 ( 4.09x) postfilter_512_neon: 1169.8 ( 6.09x) postfilter_1022_neon: 1160.0 ( 6.12x) A72 before: postfilter_15_neon: 3144.8 ( 2.39x) postfilter_512_neon: 3141.2 ( 2.39x) postfilter_1022_neon: 3230.0 ( 2.33x) After: postfilter_15_neon: 2847.8 ( 2.64x) postfilter_512_neon: 2877.8 ( 2.61x) postfilter_1022_neon: 2837.2 ( 2.65x) x13s before: postfilter_15_neon: 1615.4 ( 2.61x) postfilter_512_neon: 963.1 ( 4.39x) postfilter_1022_neon: 963.6 ( 4.39x) After: postfilter_15_neon: 1749.6 ( 2.41x) postfilter_512_neon: 707.1 ( 5.97x) postfilter_1022_neon: 706.1 ( 5.99x) Signed-off-by: Martin Storsjö <martin@martin.st>
89 lines
2.7 KiB
ArmAsm
89 lines
2.7 KiB
ArmAsm
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/aarch64/asm.S"
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function ff_opus_deemphasis_neon, export=1
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ld1 {v4.4s}, [x2], #16
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ld1 {v5.4s}, [x2], #16
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ld1 {v6.4s}, [x2], #16
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ld1 {v7.4s}, [x2]
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fmul v0.4s, v4.4s, v0.s[0]
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1: ld1 {v1.4s, v2.4s}, [x1], #32
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fmla v0.4s, v5.4s, v1.s[0]
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fmul v3.4s, v7.4s, v2.s[2]
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fmla v0.4s, v6.4s, v1.s[1]
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fmla v3.4s, v6.4s, v2.s[1]
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fmla v0.4s, v7.4s, v1.s[2]
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fmla v3.4s, v5.4s, v2.s[0]
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fadd v1.4s, v1.4s, v0.4s
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fadd v2.4s, v2.4s, v3.4s
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fmla v2.4s, v4.4s, v1.s[3]
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st1 {v1.4s, v2.4s}, [x0], #32
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fmul v0.4s, v4.4s, v2.s[3]
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subs w3, w3, #8
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b.gt 1b
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mov s0, v2.s[3]
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ret
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endfunc
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function ff_opus_postfilter_neon, export=1
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ld1 {v0.4s}, [x2]
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sub x5, x0, w1, sxtw #2
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sub x1, x5, #8
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dup v1.4s, v0.s[1]
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dup v2.4s, v0.s[2]
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dup v0.4s, v0.s[0]
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ld1 {v3.4s}, [x1], #16
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sub x4, x5, #4
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add x6, x5, #4
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fmul v3.4s, v3.4s, v2.4s
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1: ld1 {v7.4s}, [x1], #16
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ld1 {v4.4s}, [x4], #16
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fmla v3.4s, v7.4s, v2.4s
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ld1 {v6.4s}, [x6], #16
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ld1 {v5.4s}, [x5], #16
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fadd v6.4s, v6.4s, v4.4s
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fmla v3.4s, v5.4s, v0.4s
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ld1 {v4.4s}, [x0]
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fmla v3.4s, v6.4s, v1.4s
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fadd v4.4s, v4.4s, v3.4s
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fmul v3.4s, v7.4s, v2.4s
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st1 {v4.4s}, [x0], #16
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subs w3, w3, #4
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b.gt 1b
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ret
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endfunc
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