ref: fb348f64dc0bcd4c0aaf686afbdd810484a5536f
dir: /src/arm/64/mc16.S/
/*
* Copyright © 2018, VideoLAN and dav1d authors
* Copyright © 2018, Janne Grunau
* Copyright © 2020, Martin Storsjo
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "src/arm/asm.S"
#include "util.S"
#define PREP_BIAS 8192
.macro avg d0, d1, t0, t1, t2, t3
ld1 {\t0\().8h,\t1\().8h}, [x2], 32
ld1 {\t2\().8h,\t3\().8h}, [x3], 32
sqadd \t0\().8h, \t0\().8h, \t2\().8h
sqadd \t1\().8h, \t1\().8h, \t3\().8h
smax \t0\().8h, \t0\().8h, v28.8h // -2*PREP_BIAS - 1 << intermediate_bits
smax \t1\().8h, \t1\().8h, v28.8h // -2*PREP_BIAS - 1 << intermediate_bits
sqsub \t0\().8h, \t0\().8h, v28.8h // -2*PREP_BIAS - 1 << intermediate_bits
sqsub \t1\().8h, \t1\().8h, v28.8h // -2*PREP_BIAS - 1 << intermediate_bits
sshl \d0\().8h, \t0\().8h, v29.8h // -(intermediate_bits+1)
sshl \d1\().8h, \t1\().8h, v29.8h // -(intermediate_bits+1)
.endm
.macro w_avg d0, d1, t0, t1, t2, t3
ld1 {\t0\().8h,\t1\().8h}, [x2], 32
ld1 {\t2\().8h,\t3\().8h}, [x3], 32
// This difference requires a 17 bit range, and all bits are
// significant for the following multiplication.
ssubl \d0\().4s, \t2\().4h, \t0\().4h
ssubl2 \t0\().4s, \t2\().8h, \t0\().8h
ssubl \d1\().4s, \t3\().4h, \t1\().4h
ssubl2 \t1\().4s, \t3\().8h, \t1\().8h
mul \d0\().4s, \d0\().4s, v27.4s
mul \t0\().4s, \t0\().4s, v27.4s
mul \d1\().4s, \d1\().4s, v27.4s
mul \t1\().4s, \t1\().4s, v27.4s
sshr \d0\().4s, \d0\().4s, #4
sshr \t0\().4s, \t0\().4s, #4
sshr \d1\().4s, \d1\().4s, #4
sshr \t1\().4s, \t1\().4s, #4
saddw \d0\().4s, \d0\().4s, \t2\().4h
saddw2 \t0\().4s, \t0\().4s, \t2\().8h
saddw \d1\().4s, \d1\().4s, \t3\().4h
saddw2 \t1\().4s, \t1\().4s, \t3\().8h
xtn \d0\().4h, \d0\().4s
xtn2 \d0\().8h, \t0\().4s
xtn \d1\().4h, \d1\().4s
xtn2 \d1\().8h, \t1\().4s
srshl \d0\().8h, \d0\().8h, v29.8h // -intermediate_bits
srshl \d1\().8h, \d1\().8h, v29.8h // -intermediate_bits
add \d0\().8h, \d0\().8h, v28.8h // PREP_BIAS >> intermediate_bits
add \d1\().8h, \d1\().8h, v28.8h // PREP_BIAS >> intermediate_bits
smin \d0\().8h, \d0\().8h, v31.8h // bitdepth_max
smin \d1\().8h, \d1\().8h, v31.8h // bitdepth_max
smax \d0\().8h, \d0\().8h, v30.8h // 0
smax \d1\().8h, \d1\().8h, v30.8h // 0
.endm
.macro mask d0, d1, t0, t1, t2, t3
ld1 {v27.16b}, [x6], 16
ld1 {\t0\().8h,\t1\().8h}, [x2], 32
neg v27.16b, v27.16b
ld1 {\t2\().8h,\t3\().8h}, [x3], 32
sxtl v26.8h, v27.8b
sxtl2 v27.8h, v27.16b
sxtl v24.4s, v26.4h
sxtl2 v25.4s, v26.8h
sxtl v26.4s, v27.4h
sxtl2 v27.4s, v27.8h
ssubl \d0\().4s, \t2\().4h, \t0\().4h
ssubl2 \t0\().4s, \t2\().8h, \t0\().8h
ssubl \d1\().4s, \t3\().4h, \t1\().4h
ssubl2 \t1\().4s, \t3\().8h, \t1\().8h
mul \d0\().4s, \d0\().4s, v24.4s
mul \t0\().4s, \t0\().4s, v25.4s
mul \d1\().4s, \d1\().4s, v26.4s
mul \t1\().4s, \t1\().4s, v27.4s
sshr \d0\().4s, \d0\().4s, #6
sshr \t0\().4s, \t0\().4s, #6
sshr \d1\().4s, \d1\().4s, #6
sshr \t1\().4s, \t1\().4s, #6
saddw \d0\().4s, \d0\().4s, \t2\().4h
saddw2 \t0\().4s, \t0\().4s, \t2\().8h
saddw \d1\().4s, \d1\().4s, \t3\().4h
saddw2 \t1\().4s, \t1\().4s, \t3\().8h
xtn \d0\().4h, \d0\().4s
xtn2 \d0\().8h, \t0\().4s
xtn \d1\().4h, \d1\().4s
xtn2 \d1\().8h, \t1\().4s
srshl \d0\().8h, \d0\().8h, v29.8h // -intermediate_bits
srshl \d1\().8h, \d1\().8h, v29.8h // -intermediate_bits
add \d0\().8h, \d0\().8h, v28.8h // PREP_BIAS >> intermediate_bits
add \d1\().8h, \d1\().8h, v28.8h // PREP_BIAS >> intermediate_bits
smin \d0\().8h, \d0\().8h, v31.8h // bitdepth_max
smin \d1\().8h, \d1\().8h, v31.8h // bitdepth_max
smax \d0\().8h, \d0\().8h, v30.8h // 0
smax \d1\().8h, \d1\().8h, v30.8h // 0
.endm
.macro bidir_fn type, bdmax
function \type\()_16bpc_neon, export=1
clz w4, w4
.ifnc \type, avg
dup v31.8h, \bdmax // bitdepth_max
movi v30.8h, #0
.endif
clz w7, \bdmax
sub w7, w7, #18 // intermediate_bits = clz(bitdepth_max) - 18
.ifc \type, avg
mov w9, #1
mov w8, #-2*PREP_BIAS
lsl w9, w9, w7 // 1 << intermediate_bits
add w7, w7, #1
sub w8, w8, w9 // -2*PREP_BIAS - 1 << intermediate_bits
neg w7, w7 // -(intermediate_bits+1)
dup v28.8h, w8 // -2*PREP_BIAS - 1 << intermediate_bits
dup v29.8h, w7 // -(intermediate_bits+1)
.else
mov w8, #PREP_BIAS
lsr w8, w8, w7 // PREP_BIAS >> intermediate_bits
neg w7, w7 // -intermediate_bits
dup v28.8h, w8 // PREP_BIAS >> intermediate_bits
dup v29.8h, w7 // -intermediate_bits
.endif
.ifc \type, w_avg
dup v27.4s, w6
neg v27.4s, v27.4s
.endif
adr x7, L(\type\()_tbl)
sub w4, w4, #24
\type v4, v5, v0, v1, v2, v3
ldrh w4, [x7, x4, lsl #1]
sub x7, x7, w4, uxtw
br x7
40:
add x7, x0, x1
lsl x1, x1, #1
4:
subs w5, w5, #4
st1 {v4.d}[0], [x0], x1
st1 {v4.d}[1], [x7], x1
st1 {v5.d}[0], [x0], x1
st1 {v5.d}[1], [x7], x1
b.le 0f
\type v4, v5, v0, v1, v2, v3
b 4b
80:
add x7, x0, x1
lsl x1, x1, #1
8:
st1 {v4.8h}, [x0], x1
subs w5, w5, #2
st1 {v5.8h}, [x7], x1
b.le 0f
\type v4, v5, v0, v1, v2, v3
b 8b
16:
\type v6, v7, v0, v1, v2, v3
st1 {v4.8h, v5.8h}, [x0], x1
subs w5, w5, #2
st1 {v6.8h, v7.8h}, [x0], x1
b.le 0f
\type v4, v5, v0, v1, v2, v3
b 16b
32:
\type v6, v7, v0, v1, v2, v3
subs w5, w5, #1
st1 {v4.8h, v5.8h, v6.8h, v7.8h}, [x0], x1
b.le 0f
\type v4, v5, v0, v1, v2, v3
b 32b
640:
add x7, x0, #64
64:
\type v6, v7, v0, v1, v2, v3
\type v16, v17, v0, v1, v2, v3
st1 {v4.8h, v5.8h, v6.8h, v7.8h}, [x0], x1
\type v18, v19, v0, v1, v2, v3
subs w5, w5, #1
st1 {v16.8h,v17.8h,v18.8h,v19.8h}, [x7], x1
b.le 0f
\type v4, v5, v0, v1, v2, v3
b 64b
1280:
add x7, x0, #64
mov x8, #128
sub x1, x1, #128
128:
\type v6, v7, v0, v1, v2, v3
\type v16, v17, v0, v1, v2, v3
st1 {v4.8h, v5.8h, v6.8h, v7.8h}, [x0], x8
\type v18, v19, v0, v1, v2, v3
st1 {v16.8h,v17.8h,v18.8h,v19.8h}, [x7], x8
\type v4, v5, v0, v1, v2, v3
\type v6, v7, v0, v1, v2, v3
\type v16, v17, v0, v1, v2, v3
subs w5, w5, #1
st1 {v4.8h, v5.8h, v6.8h, v7.8h}, [x0], x1
\type v18, v19, v0, v1, v2, v3
st1 {v16.8h,v17.8h,v18.8h,v19.8h}, [x7], x1
b.le 0f
\type v4, v5, v0, v1, v2, v3
b 128b
0:
ret
L(\type\()_tbl):
.hword L(\type\()_tbl) - 1280b
.hword L(\type\()_tbl) - 640b
.hword L(\type\()_tbl) - 32b
.hword L(\type\()_tbl) - 16b
.hword L(\type\()_tbl) - 80b
.hword L(\type\()_tbl) - 40b
endfunc
.endm
bidir_fn avg, w6
bidir_fn w_avg, w7
bidir_fn mask, w7
function blend_16bpc_neon, export=1
adr x6, L(blend_tbl)
clz w3, w3
sub w3, w3, #26
ldrh w3, [x6, x3, lsl #1]
sub x6, x6, w3, uxtw
add x8, x0, x1
br x6
40:
lsl x1, x1, #1
4:
ld1 {v2.8b}, [x5], #8
ld1 {v1.8h}, [x2], #16
ld1 {v0.d}[0], [x0]
neg v2.8b, v2.8b // -m
subs w4, w4, #2
ld1 {v0.d}[1], [x8]
sxtl v2.8h, v2.8b
shl v2.8h, v2.8h, #9 // -m << 9
sub v1.8h, v0.8h, v1.8h // a - b
sqrdmulh v1.8h, v1.8h, v2.8h // ((a-b)*-m + 32) >> 6
add v0.8h, v0.8h, v1.8h
st1 {v0.d}[0], [x0], x1
st1 {v0.d}[1], [x8], x1
b.gt 4b
ret
80:
lsl x1, x1, #1
8:
ld1 {v4.16b}, [x5], #16
ld1 {v2.8h, v3.8h}, [x2], #32
neg v5.16b, v4.16b // -m
ld1 {v0.8h}, [x0]
ld1 {v1.8h}, [x8]
sxtl v4.8h, v5.8b
sxtl2 v5.8h, v5.16b
shl v4.8h, v4.8h, #9 // -m << 9
shl v5.8h, v5.8h, #9
sub v2.8h, v0.8h, v2.8h // a - b
sub v3.8h, v1.8h, v3.8h
subs w4, w4, #2
sqrdmulh v2.8h, v2.8h, v4.8h // ((a-b)*-m + 32) >> 6
sqrdmulh v3.8h, v3.8h, v5.8h
add v0.8h, v0.8h, v2.8h
add v1.8h, v1.8h, v3.8h
st1 {v0.8h}, [x0], x1
st1 {v1.8h}, [x8], x1
b.gt 8b
ret
160:
lsl x1, x1, #1
16:
ld1 {v16.16b, v17.16b}, [x5], #32
ld1 {v4.8h, v5.8h, v6.8h, v7.8h}, [x2], #64
subs w4, w4, #2
neg v18.16b, v16.16b // -m
neg v19.16b, v17.16b
ld1 {v0.8h, v1.8h}, [x0]
sxtl v16.8h, v18.8b
sxtl2 v17.8h, v18.16b
sxtl v18.8h, v19.8b
sxtl2 v19.8h, v19.16b
ld1 {v2.8h, v3.8h}, [x8]
shl v16.8h, v16.8h, #9 // -m << 9
shl v17.8h, v17.8h, #9
shl v18.8h, v18.8h, #9
shl v19.8h, v19.8h, #9
sub v4.8h, v0.8h, v4.8h // a - b
sub v5.8h, v1.8h, v5.8h
sub v6.8h, v2.8h, v6.8h
sub v7.8h, v3.8h, v7.8h
sqrdmulh v4.8h, v4.8h, v16.8h // ((a-b)*-m + 32) >> 6
sqrdmulh v5.8h, v5.8h, v17.8h
sqrdmulh v6.8h, v6.8h, v18.8h
sqrdmulh v7.8h, v7.8h, v19.8h
add v0.8h, v0.8h, v4.8h
add v1.8h, v1.8h, v5.8h
add v2.8h, v2.8h, v6.8h
add v3.8h, v3.8h, v7.8h
st1 {v0.8h, v1.8h}, [x0], x1
st1 {v2.8h, v3.8h}, [x8], x1
b.gt 16b
ret
32:
ld1 {v16.16b, v17.16b}, [x5], #32
ld1 {v4.8h, v5.8h, v6.8h, v7.8h}, [x2], #64
subs w4, w4, #1
neg v18.16b, v16.16b // -m
neg v19.16b, v17.16b
sxtl v16.8h, v18.8b
sxtl2 v17.8h, v18.16b
sxtl v18.8h, v19.8b
sxtl2 v19.8h, v19.16b
ld1 {v0.8h, v1.8h, v2.8h, v3.8h}, [x0]
shl v16.8h, v16.8h, #9 // -m << 9
shl v17.8h, v17.8h, #9
shl v18.8h, v18.8h, #9
shl v19.8h, v19.8h, #9
sub v4.8h, v0.8h, v4.8h // a - b
sub v5.8h, v1.8h, v5.8h
sub v6.8h, v2.8h, v6.8h
sub v7.8h, v3.8h, v7.8h
sqrdmulh v4.8h, v4.8h, v16.8h // ((a-b)*-m + 32) >> 6
sqrdmulh v5.8h, v5.8h, v17.8h
sqrdmulh v6.8h, v6.8h, v18.8h
sqrdmulh v7.8h, v7.8h, v19.8h
add v0.8h, v0.8h, v4.8h
add v1.8h, v1.8h, v5.8h
add v2.8h, v2.8h, v6.8h
add v3.8h, v3.8h, v7.8h
st1 {v0.8h, v1.8h, v2.8h, v3.8h}, [x0], x1
b.gt 32b
ret
L(blend_tbl):
.hword L(blend_tbl) - 32b
.hword L(blend_tbl) - 160b
.hword L(blend_tbl) - 80b
.hword L(blend_tbl) - 40b
endfunc
function blend_h_16bpc_neon, export=1
adr x6, L(blend_h_tbl)
movrel x5, X(obmc_masks)
add x5, x5, w4, uxtw
sub w4, w4, w4, lsr #2
clz w7, w3
add x8, x0, x1
lsl x1, x1, #1
sub w7, w7, #24
ldrh w7, [x6, x7, lsl #1]
sub x6, x6, w7, uxtw
br x6
2:
ld2r {v2.8b, v3.8b}, [x5], #2
ld1 {v1.4h}, [x2], #8
ext v2.8b, v2.8b, v3.8b, #6
subs w4, w4, #2
neg v2.8b, v2.8b // -m
ld1 {v0.s}[0], [x0]
ld1 {v0.s}[1], [x8]
sxtl v2.8h, v2.8b
shl v2.4h, v2.4h, #9 // -m << 9
sub v1.4h, v0.4h, v1.4h // a - b
sqrdmulh v1.4h, v1.4h, v2.4h // ((a-b)*-m + 32) >> 6
add v0.4h, v0.4h, v1.4h
st1 {v0.s}[0], [x0], x1
st1 {v0.s}[1], [x8], x1
b.gt 2b
ret
4:
ld2r {v2.8b, v3.8b}, [x5], #2
ld1 {v1.8h}, [x2], #16
ext v2.8b, v2.8b, v3.8b, #4
subs w4, w4, #2
neg v2.8b, v2.8b // -m
ld1 {v0.d}[0], [x0]
ld1 {v0.d}[1], [x8]
sxtl v2.8h, v2.8b
shl v2.8h, v2.8h, #9 // -m << 9
sub v1.8h, v0.8h, v1.8h // a - b
sqrdmulh v1.8h, v1.8h, v2.8h // ((a-b)*-m + 32) >> 6
add v0.8h, v0.8h, v1.8h
st1 {v0.d}[0], [x0], x1
st1 {v0.d}[1], [x8], x1
b.gt 4b
ret
8:
ld2r {v4.8b, v5.8b}, [x5], #2
ld1 {v2.8h, v3.8h}, [x2], #32
neg v4.8b, v4.8b // -m
neg v5.8b, v5.8b
ld1 {v0.8h}, [x0]
subs w4, w4, #2
sxtl v4.8h, v4.8b
sxtl v5.8h, v5.8b
ld1 {v1.8h}, [x8]
shl v4.8h, v4.8h, #9 // -m << 9
shl v5.8h, v5.8h, #9
sub v2.8h, v0.8h, v2.8h // a - b
sub v3.8h, v1.8h, v3.8h
sqrdmulh v2.8h, v2.8h, v4.8h // ((a-b)*-m + 32) >> 6
sqrdmulh v3.8h, v3.8h, v5.8h
add v0.8h, v0.8h, v2.8h
add v1.8h, v1.8h, v3.8h
st1 {v0.8h}, [x0], x1
st1 {v1.8h}, [x8], x1
b.gt 8b
ret
16:
ld2r {v16.8b, v17.8b}, [x5], #2
ld1 {v4.8h, v5.8h, v6.8h, v7.8h}, [x2], #64
neg v16.8b, v16.8b // -m
neg v17.8b, v17.8b
ld1 {v0.8h, v1.8h}, [x0]
ld1 {v2.8h, v3.8h}, [x8]
subs w4, w4, #2
sxtl v16.8h, v16.8b
sxtl v17.8h, v17.8b
shl v16.8h, v16.8h, #9 // -m << 9
shl v17.8h, v17.8h, #9
sub v4.8h, v0.8h, v4.8h // a - b
sub v5.8h, v1.8h, v5.8h
sub v6.8h, v2.8h, v6.8h
sub v7.8h, v3.8h, v7.8h
sqrdmulh v4.8h, v4.8h, v16.8h // ((a-b)*-m + 32) >> 6
sqrdmulh v5.8h, v5.8h, v16.8h
sqrdmulh v6.8h, v6.8h, v17.8h
sqrdmulh v7.8h, v7.8h, v17.8h
add v0.8h, v0.8h, v4.8h
add v1.8h, v1.8h, v5.8h
add v2.8h, v2.8h, v6.8h
add v3.8h, v3.8h, v7.8h
st1 {v0.8h, v1.8h}, [x0], x1
st1 {v2.8h, v3.8h}, [x8], x1
b.gt 16b
ret
1280:
640:
320:
sub x1, x1, w3, uxtw #1
add x7, x2, w3, uxtw #1
321:
ld2r {v24.8b, v25.8b}, [x5], #2
mov w6, w3
neg v24.8b, v24.8b // -m
neg v25.8b, v25.8b
sxtl v24.8h, v24.8b
sxtl v25.8h, v25.8b
shl v24.8h, v24.8h, #9 // -m << 9
shl v25.8h, v25.8h, #9
32:
ld1 {v16.8h, v17.8h, v18.8h, v19.8h}, [x2], #64
ld1 {v0.8h, v1.8h, v2.8h, v3.8h}, [x0]
subs w6, w6, #32
sub v16.8h, v0.8h, v16.8h // a - b
sub v17.8h, v1.8h, v17.8h
sub v18.8h, v2.8h, v18.8h
sub v19.8h, v3.8h, v19.8h
ld1 {v20.8h, v21.8h, v22.8h, v23.8h}, [x7], #64
ld1 {v4.8h, v5.8h, v6.8h, v7.8h}, [x8]
sqrdmulh v16.8h, v16.8h, v24.8h // ((a-b)*-m + 32) >> 6
sqrdmulh v17.8h, v17.8h, v24.8h
sqrdmulh v18.8h, v18.8h, v24.8h
sqrdmulh v19.8h, v19.8h, v24.8h
sub v20.8h, v4.8h, v20.8h // a - b
sub v21.8h, v5.8h, v21.8h
sub v22.8h, v6.8h, v22.8h
sub v23.8h, v7.8h, v23.8h
add v0.8h, v0.8h, v16.8h
add v1.8h, v1.8h, v17.8h
add v2.8h, v2.8h, v18.8h
add v3.8h, v3.8h, v19.8h
sqrdmulh v20.8h, v20.8h, v25.8h // ((a-b)*-m + 32) >> 6
sqrdmulh v21.8h, v21.8h, v25.8h
sqrdmulh v22.8h, v22.8h, v25.8h
sqrdmulh v23.8h, v23.8h, v25.8h
st1 {v0.8h, v1.8h, v2.8h, v3.8h}, [x0], #64
add v4.8h, v4.8h, v20.8h
add v5.8h, v5.8h, v21.8h
add v6.8h, v6.8h, v22.8h
add v7.8h, v7.8h, v23.8h
st1 {v4.8h, v5.8h, v6.8h, v7.8h}, [x8], #64
b.gt 32b
subs w4, w4, #2
add x0, x0, x1
add x8, x8, x1
add x2, x2, w3, uxtw #1
add x7, x7, w3, uxtw #1
b.gt 321b
ret
L(blend_h_tbl):
.hword L(blend_h_tbl) - 1280b
.hword L(blend_h_tbl) - 640b
.hword L(blend_h_tbl) - 320b
.hword L(blend_h_tbl) - 16b
.hword L(blend_h_tbl) - 8b
.hword L(blend_h_tbl) - 4b
.hword L(blend_h_tbl) - 2b
endfunc
function blend_v_16bpc_neon, export=1
adr x6, L(blend_v_tbl)
movrel x5, X(obmc_masks)
add x5, x5, w3, uxtw
clz w3, w3
add x8, x0, x1
lsl x1, x1, #1
sub w3, w3, #26
ldrh w3, [x6, x3, lsl #1]
sub x6, x6, w3, uxtw
br x6
20:
ld1r {v2.8b}, [x5]
neg v2.8b, v2.8b // -m
sxtl v2.8h, v2.8b
shl v2.4h, v2.4h, #9 // -m << 9
2:
ld1 {v1.s}[0], [x2], #4
ld1 {v0.h}[0], [x0]
subs w4, w4, #2
ld1 {v1.h}[1], [x2]
ld1 {v0.h}[1], [x8]
add x2, x2, #4
sub v1.4h, v0.4h, v1.4h // a - b
sqrdmulh v1.4h, v1.4h, v2.4h // ((a-b)*-m + 32) >> 6
add v0.4h, v0.4h, v1.4h
st1 {v0.h}[0], [x0], x1
st1 {v0.h}[1], [x8], x1
b.gt 2b
ret
40:
ld1r {v2.2s}, [x5]
sub x1, x1, #4
neg v2.8b, v2.8b // -m
sxtl v2.8h, v2.8b
shl v2.8h, v2.8h, #9 // -m << 9
4:
ld1 {v1.8h}, [x2], #16
ld1 {v0.d}[0], [x0]
ld1 {v0.d}[1], [x8]
subs w4, w4, #2
sub v1.8h, v0.8h, v1.8h // a - b
sqrdmulh v1.8h, v1.8h, v2.8h // ((a-b)*-m + 32) >> 6
add v0.8h, v0.8h, v1.8h
st1 {v0.s}[0], [x0], #4
st1 {v0.s}[2], [x8], #4
st1 {v0.h}[2], [x0], x1
st1 {v0.h}[6], [x8], x1
b.gt 4b
ret
80:
ld1 {v4.8b}, [x5]
sub x1, x1, #8
neg v4.8b, v4.8b // -m
sxtl v4.8h, v4.8b
shl v4.8h, v4.8h, #9 // -m << 9
8:
ld1 {v2.8h, v3.8h}, [x2], #32
ld1 {v0.8h}, [x0]
ld1 {v1.8h}, [x8]
subs w4, w4, #2
sub v2.8h, v0.8h, v2.8h // a - b
sub v3.8h, v1.8h, v3.8h
sqrdmulh v2.8h, v2.8h, v4.8h // ((a-b)*-m + 32) >> 6
sqrdmulh v3.8h, v3.8h, v4.8h
add v0.8h, v0.8h, v2.8h
add v1.8h, v1.8h, v3.8h
st1 {v0.d}[0], [x0], #8
st1 {v1.d}[0], [x8], #8
st1 {v0.s}[2], [x0], x1
st1 {v1.s}[2], [x8], x1
b.gt 8b
ret
160:
ld1 {v16.8b, v17.8b}, [x5]
sub x1, x1, #16
neg v16.8b, v16.8b // -m
neg v17.8b, v17.8b
sxtl v16.8h, v16.8b
sxtl v17.8h, v17.8b
shl v16.8h, v16.8h, #9 // -m << 9
shl v17.4h, v17.4h, #9
16:
ld1 {v4.8h, v5.8h, v6.8h, v7.8h}, [x2], #64
ld1 {v0.8h, v1.8h}, [x0]
subs w4, w4, #2
ld1 {v2.8h, v3.8h}, [x8]
sub v4.8h, v0.8h, v4.8h // a - b
sub v5.4h, v1.4h, v5.4h
sub v6.8h, v2.8h, v6.8h
sub v7.4h, v3.4h, v7.4h
sqrdmulh v4.8h, v4.8h, v16.8h // ((a-b)*-m + 32) >> 6
sqrdmulh v5.4h, v5.4h, v17.4h
sqrdmulh v6.8h, v6.8h, v16.8h
sqrdmulh v7.4h, v7.4h, v17.4h
add v0.8h, v0.8h, v4.8h
add v1.4h, v1.4h, v5.4h
add v2.8h, v2.8h, v6.8h
add v3.4h, v3.4h, v7.4h
st1 {v0.8h}, [x0], #16
st1 {v2.8h}, [x8], #16
st1 {v1.4h}, [x0], x1
st1 {v3.4h}, [x8], x1
b.gt 16b
ret
320:
ld1 {v24.16b, v25.16b}, [x5]
neg v26.16b, v24.16b // -m
neg v27.8b, v25.8b
sxtl v24.8h, v26.8b
sxtl2 v25.8h, v26.16b
sxtl v26.8h, v27.8b
shl v24.8h, v24.8h, #9 // -m << 9
shl v25.8h, v25.8h, #9
shl v26.8h, v26.8h, #9
32:
ld1 {v16.8h, v17.8h, v18.8h, v19.8h}, [x2], #64
ld1 {v0.8h, v1.8h, v2.8h}, [x0]
ld1 {v20.8h, v21.8h, v22.8h, v23.8h}, [x2], #64
ld1 {v4.8h, v5.8h, v6.8h}, [x8]
subs w4, w4, #2
sub v16.8h, v0.8h, v16.8h // a - b
sub v17.8h, v1.8h, v17.8h
sub v18.8h, v2.8h, v18.8h
sub v20.8h, v4.8h, v20.8h
sub v21.8h, v5.8h, v21.8h
sub v22.8h, v6.8h, v22.8h
sqrdmulh v16.8h, v16.8h, v24.8h // ((a-b)*-m + 32) >> 6
sqrdmulh v17.8h, v17.8h, v25.8h
sqrdmulh v18.8h, v18.8h, v26.8h
sqrdmulh v20.8h, v20.8h, v24.8h
sqrdmulh v21.8h, v21.8h, v25.8h
sqrdmulh v22.8h, v22.8h, v26.8h
add v0.8h, v0.8h, v16.8h
add v1.8h, v1.8h, v17.8h
add v2.8h, v2.8h, v18.8h
add v4.8h, v4.8h, v20.8h
add v5.8h, v5.8h, v21.8h
add v6.8h, v6.8h, v22.8h
st1 {v0.8h, v1.8h, v2.8h}, [x0], x1
st1 {v4.8h, v5.8h, v6.8h}, [x8], x1
b.gt 32b
ret
L(blend_v_tbl):
.hword L(blend_v_tbl) - 320b
.hword L(blend_v_tbl) - 160b
.hword L(blend_v_tbl) - 80b
.hword L(blend_v_tbl) - 40b
.hword L(blend_v_tbl) - 20b
endfunc
// This has got the same signature as the put_8tap functions,
// and assumes that x9 is set to (clz(w)-24).
function put_neon
adr x10, L(put_tbl)
ldrh w9, [x10, x9, lsl #1]
sub x10, x10, w9, uxtw
br x10
2:
ld1 {v0.s}[0], [x2], x3
ld1 {v1.s}[0], [x2], x3
subs w5, w5, #2
st1 {v0.s}[0], [x0], x1
st1 {v1.s}[0], [x0], x1
b.gt 2b
ret
4:
ld1 {v0.8b}, [x2], x3
ld1 {v1.8b}, [x2], x3
subs w5, w5, #2
st1 {v0.8b}, [x0], x1
st1 {v1.8b}, [x0], x1
b.gt 4b
ret
80:
add x8, x0, x1
lsl x1, x1, #1
add x9, x2, x3
lsl x3, x3, #1
8:
ld1 {v0.16b}, [x2], x3
ld1 {v1.16b}, [x9], x3
subs w5, w5, #2
st1 {v0.16b}, [x0], x1
st1 {v1.16b}, [x8], x1
b.gt 8b
ret
16:
ldp x6, x7, [x2]
ldp x8, x9, [x2, #16]
stp x6, x7, [x0]
subs w5, w5, #1
stp x8, x9, [x0, #16]
add x2, x2, x3
add x0, x0, x1
b.gt 16b
ret
32:
ldp x6, x7, [x2]
ldp x8, x9, [x2, #16]
stp x6, x7, [x0]
ldp x10, x11, [x2, #32]
stp x8, x9, [x0, #16]
subs w5, w5, #1
ldp x12, x13, [x2, #48]
stp x10, x11, [x0, #32]
stp x12, x13, [x0, #48]
add x2, x2, x3
add x0, x0, x1
b.gt 32b
ret
64:
ldp q0, q1, [x2]
ldp q2, q3, [x2, #32]
stp q0, q1, [x0]
ldp q4, q5, [x2, #64]
stp q2, q3, [x0, #32]
ldp q6, q7, [x2, #96]
subs w5, w5, #1
stp q4, q5, [x0, #64]
stp q6, q7, [x0, #96]
add x2, x2, x3
add x0, x0, x1
b.gt 64b
ret
128:
ldp q0, q1, [x2]
ldp q2, q3, [x2, #32]
stp q0, q1, [x0]
ldp q4, q5, [x2, #64]
stp q2, q3, [x0, #32]
ldp q6, q7, [x2, #96]
subs w5, w5, #1
stp q4, q5, [x0, #64]
ldp q16, q17, [x2, #128]
stp q6, q7, [x0, #96]
ldp q18, q19, [x2, #160]
stp q16, q17, [x0, #128]
ldp q20, q21, [x2, #192]
stp q18, q19, [x0, #160]
ldp q22, q23, [x2, #224]
stp q20, q21, [x0, #192]
stp q22, q23, [x0, #224]
add x2, x2, x3
add x0, x0, x1
b.gt 128b
ret
L(put_tbl):
.hword L(put_tbl) - 128b
.hword L(put_tbl) - 64b
.hword L(put_tbl) - 32b
.hword L(put_tbl) - 16b
.hword L(put_tbl) - 80b
.hword L(put_tbl) - 4b
.hword L(put_tbl) - 2b
endfunc
// This has got the same signature as the prep_8tap functions,
// and assumes that x9 is set to (clz(w)-24), w7 to intermediate_bits and
// x8 to w*2.
function prep_neon
adr x10, L(prep_tbl)
ldrh w9, [x10, x9, lsl #1]
dup v31.8h, w7 // intermediate_bits
movi v30.8h, #(PREP_BIAS >> 8), lsl #8
sub x10, x10, w9, uxtw
br x10
40:
add x9, x1, x2
lsl x2, x2, #1
4:
ld1 {v0.d}[0], [x1], x2
ld1 {v0.d}[1], [x9], x2
subs w4, w4, #2
sshl v0.8h, v0.8h, v31.8h
sub v0.8h, v0.8h, v30.8h
st1 {v0.8h}, [x0], #16
b.gt 4b
ret
80:
add x9, x1, x2
lsl x2, x2, #1
8:
ld1 {v0.8h}, [x1], x2
ld1 {v1.8h}, [x9], x2
subs w4, w4, #2
sshl v0.8h, v0.8h, v31.8h
sshl v1.8h, v1.8h, v31.8h
sub v0.8h, v0.8h, v30.8h
sub v1.8h, v1.8h, v30.8h
st1 {v0.8h, v1.8h}, [x0], #32
b.gt 8b
ret
16:
ldp q0, q1, [x1]
add x1, x1, x2
sshl v0.8h, v0.8h, v31.8h
ldp q2, q3, [x1]
add x1, x1, x2
subs w4, w4, #2
sshl v1.8h, v1.8h, v31.8h
sshl v2.8h, v2.8h, v31.8h
sshl v3.8h, v3.8h, v31.8h
sub v0.8h, v0.8h, v30.8h
sub v1.8h, v1.8h, v30.8h
sub v2.8h, v2.8h, v30.8h
sub v3.8h, v3.8h, v30.8h
st1 {v0.8h, v1.8h, v2.8h, v3.8h}, [x0], #64
b.gt 16b
ret
32:
ldp q0, q1, [x1]
sshl v0.8h, v0.8h, v31.8h
ldp q2, q3, [x1, #32]
add x1, x1, x2
sshl v1.8h, v1.8h, v31.8h
sshl v2.8h, v2.8h, v31.8h
sshl v3.8h, v3.8h, v31.8h
subs w4, w4, #1
sub v0.8h, v0.8h, v30.8h
sub v1.8h, v1.8h, v30.8h
sub v2.8h, v2.8h, v30.8h
sub v3.8h, v3.8h, v30.8h
st1 {v0.8h, v1.8h, v2.8h, v3.8h}, [x0], #64
b.gt 32b
ret
64:
ldp q0, q1, [x1]
subs w4, w4, #1
sshl v0.8h, v0.8h, v31.8h
ldp q2, q3, [x1, #32]
sshl v1.8h, v1.8h, v31.8h
ldp q4, q5, [x1, #64]
sshl v2.8h, v2.8h, v31.8h
sshl v3.8h, v3.8h, v31.8h
ldp q6, q7, [x1, #96]
add x1, x1, x2
sshl v4.8h, v4.8h, v31.8h
sshl v5.8h, v5.8h, v31.8h
sshl v6.8h, v6.8h, v31.8h
sshl v7.8h, v7.8h, v31.8h
sub v0.8h, v0.8h, v30.8h
sub v1.8h, v1.8h, v30.8h
sub v2.8h, v2.8h, v30.8h
sub v3.8h, v3.8h, v30.8h
stp q0, q1, [x0]
sub v4.8h, v4.8h, v30.8h
sub v5.8h, v5.8h, v30.8h
stp q2, q3, [x0, #32]
sub v6.8h, v6.8h, v30.8h
sub v7.8h, v7.8h, v30.8h
stp q4, q5, [x0, #64]
stp q6, q7, [x0, #96]
add x0, x0, x8
b.gt 64b
ret
128:
ldp q0, q1, [x1]
subs w4, w4, #1
sshl v0.8h, v0.8h, v31.8h
ldp q2, q3, [x1, #32]
sshl v1.8h, v1.8h, v31.8h
ldp q4, q5, [x1, #64]
sshl v2.8h, v2.8h, v31.8h
sshl v3.8h, v3.8h, v31.8h
ldp q6, q7, [x1, #96]
sshl v4.8h, v4.8h, v31.8h
sshl v5.8h, v5.8h, v31.8h
ldp q16, q17, [x1, #128]
sshl v6.8h, v6.8h, v31.8h
sshl v7.8h, v7.8h, v31.8h
ldp q18, q19, [x1, #160]
sshl v16.8h, v16.8h, v31.8h
sshl v17.8h, v17.8h, v31.8h
ldp q20, q21, [x1, #192]
sshl v18.8h, v18.8h, v31.8h
sshl v19.8h, v19.8h, v31.8h
ldp q22, q23, [x1, #224]
add x1, x1, x2
sshl v20.8h, v20.8h, v31.8h
sshl v21.8h, v21.8h, v31.8h
sshl v22.8h, v22.8h, v31.8h
sshl v23.8h, v23.8h, v31.8h
sub v0.8h, v0.8h, v30.8h
sub v1.8h, v1.8h, v30.8h
sub v2.8h, v2.8h, v30.8h
sub v3.8h, v3.8h, v30.8h
stp q0, q1, [x0]
sub v4.8h, v4.8h, v30.8h
sub v5.8h, v5.8h, v30.8h
stp q2, q3, [x0, #32]
sub v6.8h, v6.8h, v30.8h
sub v7.8h, v7.8h, v30.8h
stp q4, q5, [x0, #64]
sub v16.8h, v16.8h, v30.8h
sub v17.8h, v17.8h, v30.8h
stp q6, q7, [x0, #96]
sub v18.8h, v18.8h, v30.8h
sub v19.8h, v19.8h, v30.8h
stp q16, q17, [x0, #128]
sub v20.8h, v20.8h, v30.8h
sub v21.8h, v21.8h, v30.8h
stp q18, q19, [x0, #160]
sub v22.8h, v22.8h, v30.8h
sub v23.8h, v23.8h, v30.8h
stp q20, q21, [x0, #192]
stp q22, q23, [x0, #224]
add x0, x0, x8
b.gt 128b
ret
L(prep_tbl):
.hword L(prep_tbl) - 128b
.hword L(prep_tbl) - 64b
.hword L(prep_tbl) - 32b
.hword L(prep_tbl) - 16b
.hword L(prep_tbl) - 80b
.hword L(prep_tbl) - 40b
endfunc
.macro load_slice s0, s1, strd, wd, d0, d1, d2, d3, d4, d5, d6
ld1 {\d0\wd}[0], [\s0], \strd
ld1 {\d1\wd}[0], [\s1], \strd
.ifnb \d2
ld1 {\d2\wd}[0], [\s0], \strd
ld1 {\d3\wd}[0], [\s1], \strd
.endif
.ifnb \d4
ld1 {\d4\wd}[0], [\s0], \strd
.endif
.ifnb \d5
ld1 {\d5\wd}[0], [\s1], \strd
.endif
.ifnb \d6
ld1 {\d6\wd}[0], [\s0], \strd
.endif
.endm
.macro load_reg s0, s1, strd, wd, d0, d1, d2, d3, d4, d5, d6
ld1 {\d0\wd}, [\s0], \strd
ld1 {\d1\wd}, [\s1], \strd
.ifnb \d2
ld1 {\d2\wd}, [\s0], \strd
ld1 {\d3\wd}, [\s1], \strd
.endif
.ifnb \d4
ld1 {\d4\wd}, [\s0], \strd
.endif
.ifnb \d5
ld1 {\d5\wd}, [\s1], \strd
.endif
.ifnb \d6
ld1 {\d6\wd}, [\s0], \strd
.endif
.endm
.macro load_regpair s0, s1, strd, wd, d0, d1, d2, d3, d4, d5
ld1 {\d0\wd, \d1\wd}, [\s0], \strd
.ifnb \d2
ld1 {\d2\wd, \d3\wd}, [\s1], \strd
.endif
.ifnb \d4
ld1 {\d4\wd, \d5\wd}, [\s0], \strd
.endif
.endm
.macro load_s s0, s1, strd, d0, d1, d2, d3, d4, d5, d6
load_slice \s0, \s1, \strd, .s, \d0, \d1, \d2, \d3, \d4, \d5, \d6
.endm
.macro load_4h s0, s1, strd, d0, d1, d2, d3, d4, d5, d6
load_reg \s0, \s1, \strd, .4h, \d0, \d1, \d2, \d3, \d4, \d5, \d6
.endm
.macro load_8h s0, s1, strd, d0, d1, d2, d3, d4, d5, d6
load_reg \s0, \s1, \strd, .8h, \d0, \d1, \d2, \d3, \d4, \d5, \d6
.endm
.macro load_16h s0, s1, strd, d0, d1, d2, d3, d4, d5
load_regpair \s0, \s1, \strd, .8h, \d0, \d1, \d2, \d3, \d4, \d5
.endm
.macro interleave_1 wd, r0, r1, r2, r3, r4
trn1 \r0\wd, \r0\wd, \r1\wd
trn1 \r1\wd, \r1\wd, \r2\wd
.ifnb \r3
trn1 \r2\wd, \r2\wd, \r3\wd
trn1 \r3\wd, \r3\wd, \r4\wd
.endif
.endm
.macro interleave_1_s r0, r1, r2, r3, r4
interleave_1 .2s, \r0, \r1, \r2, \r3, \r4
.endm
.macro umin_h c, wd, r0, r1, r2, r3
umin \r0\wd, \r0\wd, \c\wd
.ifnb \r1
umin \r1\wd, \r1\wd, \c\wd
.endif
.ifnb \r2
umin \r2\wd, \r2\wd, \c\wd
umin \r3\wd, \r3\wd, \c\wd
.endif
.endm
.macro sub_h c, wd, r0, r1, r2, r3
sub \r0\wd, \r0\wd, \c\wd
.ifnb \r1
sub \r1\wd, \r1\wd, \c\wd
.endif
.ifnb \r2
sub \r2\wd, \r2\wd, \c\wd
sub \r3\wd, \r3\wd, \c\wd
.endif
.endm
.macro smull_smlal_4 d, s0, s1, s2, s3
smull \d\().4s, \s0\().4h, v0.h[0]
smlal \d\().4s, \s1\().4h, v0.h[1]
smlal \d\().4s, \s2\().4h, v0.h[2]
smlal \d\().4s, \s3\().4h, v0.h[3]
.endm
.macro smull2_smlal2_4 d, s0, s1, s2, s3
smull2 \d\().4s, \s0\().8h, v0.h[0]
smlal2 \d\().4s, \s1\().8h, v0.h[1]
smlal2 \d\().4s, \s2\().8h, v0.h[2]
smlal2 \d\().4s, \s3\().8h, v0.h[3]
.endm
.macro smull_smlal_8 d, s0, s1, s2, s3, s4, s5, s6, s7
smull \d\().4s, \s0\().4h, v0.h[0]
smlal \d\().4s, \s1\().4h, v0.h[1]
smlal \d\().4s, \s2\().4h, v0.h[2]
smlal \d\().4s, \s3\().4h, v0.h[3]
smlal \d\().4s, \s4\().4h, v0.h[4]
smlal \d\().4s, \s5\().4h, v0.h[5]
smlal \d\().4s, \s6\().4h, v0.h[6]
smlal \d\().4s, \s7\().4h, v0.h[7]
.endm
.macro smull2_smlal2_8 d, s0, s1, s2, s3, s4, s5, s6, s7
smull2 \d\().4s, \s0\().8h, v0.h[0]
smlal2 \d\().4s, \s1\().8h, v0.h[1]
smlal2 \d\().4s, \s2\().8h, v0.h[2]
smlal2 \d\().4s, \s3\().8h, v0.h[3]
smlal2 \d\().4s, \s4\().8h, v0.h[4]
smlal2 \d\().4s, \s5\().8h, v0.h[5]
smlal2 \d\().4s, \s6\().8h, v0.h[6]
smlal2 \d\().4s, \s7\().8h, v0.h[7]
.endm
.macro sqrshrun_h shift, r0, r1, r2, r3
sqrshrun \r0\().4h, \r0\().4s, #\shift
.ifnb \r1
sqrshrun2 \r0\().8h, \r1\().4s, #\shift
.endif
.ifnb \r2
sqrshrun \r2\().4h, \r2\().4s, #\shift
sqrshrun2 \r2\().8h, \r3\().4s, #\shift
.endif
.endm
.macro xtn_h r0, r1, r2, r3
xtn \r0\().4h, \r0\().4s
xtn2 \r0\().8h, \r1\().4s
.ifnb \r2
xtn \r2\().4h, \r2\().4s
xtn2 \r2\().8h, \r3\().4s
.endif
.endm
.macro srshl_s shift, r0, r1, r2, r3
srshl \r0\().4s, \r0\().4s, \shift\().4s
srshl \r1\().4s, \r1\().4s, \shift\().4s
.ifnb \r2
srshl \r2\().4s, \r2\().4s, \shift\().4s
srshl \r3\().4s, \r3\().4s, \shift\().4s
.endif
.endm
.macro st_s strd, reg, lanes
st1 {\reg\().s}[0], [x0], \strd
st1 {\reg\().s}[1], [x9], \strd
.if \lanes > 2
st1 {\reg\().s}[2], [x0], \strd
st1 {\reg\().s}[3], [x9], \strd
.endif
.endm
.macro st_d strd, r0, r1
st1 {\r0\().d}[0], [x0], \strd
st1 {\r0\().d}[1], [x9], \strd
.ifnb \r1
st1 {\r1\().d}[0], [x0], \strd
st1 {\r1\().d}[1], [x9], \strd
.endif
.endm
.macro shift_store_4 type, strd, r0, r1, r2, r3
.ifc \type, put
sqrshrun_h 6, \r0, \r1, \r2, \r3
umin_h v31, .8h, \r0, \r2
.else
srshl_s v30, \r0, \r1, \r2, \r3 // -(6-intermediate_bits)
xtn_h \r0, \r1, \r2, \r3
sub_h v29, .8h, \r0, \r2 // PREP_BIAS
.endif
st_d \strd, \r0, \r2
.endm
.macro st_reg strd, wd, r0, r1, r2, r3, r4, r5, r6, r7
st1 {\r0\wd}, [x0], \strd
st1 {\r1\wd}, [x9], \strd
.ifnb \r2
st1 {\r2\wd}, [x0], \strd
st1 {\r3\wd}, [x9], \strd
.endif
.ifnb \r4
st1 {\r4\wd}, [x0], \strd
st1 {\r5\wd}, [x9], \strd
st1 {\r6\wd}, [x0], \strd
st1 {\r7\wd}, [x9], \strd
.endif
.endm
.macro st_8h strd, r0, r1, r2, r3, r4, r5, r6, r7
st_reg \strd, .8h, \r0, \r1, \r2, \r3, \r4, \r5, \r6, \r7
.endm
.macro shift_store_8 type, strd, r0, r1, r2, r3
.ifc \type, put
sqrshrun_h 6, \r0, \r1, \r2, \r3
umin_h v31, .8h, \r0, \r2
.else
srshl_s v30, \r0, \r1, \r2, \r3 // -(6-intermediate_bits)
xtn_h \r0, \r1, \r2, \r3
sub_h v29, .8h, \r0, \r2 // PREP_BIAS
.endif
st_8h \strd, \r0, \r2
.endm
.macro shift_store_16 type, strd, dst, r0, r1, r2, r3
.ifc \type, put
sqrshrun_h 6, \r0, \r1, \r2, \r3
umin \r0\().8h, \r0\().8h, v31.8h
umin \r1\().8h, \r2\().8h, v31.8h
.else
srshl_s v30, \r0, \r1, \r2, \r3 // -(6-intermediate_bits)
xtn_h \r0, \r1, \r2, \r3
sub \r0\().8h, \r0\().8h, v29.8h
sub \r1\().8h, \r2\().8h, v29.8h
.endif
st1 {\r0\().8h, \r1\().8h}, [\dst], \strd
.endm
.macro make_8tap_fn op, type, type_h, type_v
function \op\()_8tap_\type\()_16bpc_neon, export=1
mov w9, \type_h
mov w10, \type_v
b \op\()_8tap_neon
endfunc
.endm
// No spaces in these expressions, due to gas-preprocessor.
#define REGULAR ((0*15<<7)|3*15)
#define SMOOTH ((1*15<<7)|4*15)
#define SHARP ((2*15<<7)|3*15)
.macro filter_fn type, dst, d_strd, src, s_strd, w, h, mx, xmx, my, xmy, bdmax, ds2, sr2
make_8tap_fn \type, regular, REGULAR, REGULAR
make_8tap_fn \type, regular_smooth, REGULAR, SMOOTH
make_8tap_fn \type, regular_sharp, REGULAR, SHARP
make_8tap_fn \type, smooth, SMOOTH, SMOOTH
make_8tap_fn \type, smooth_regular, SMOOTH, REGULAR
make_8tap_fn \type, smooth_sharp, SMOOTH, SHARP
make_8tap_fn \type, sharp, SHARP, SHARP
make_8tap_fn \type, sharp_regular, SHARP, REGULAR
make_8tap_fn \type, sharp_smooth, SHARP, SMOOTH
function \type\()_8tap_neon
.ifc \bdmax, w8
ldr w8, [sp]
.endif
mov w11, #0x4081 // (1 << 14) | (1 << 7) | (1 << 0)
mul \mx, \mx, w11
mul \my, \my, w11
add \mx, \mx, w9 // mx, 8tap_h, 4tap_h
add \my, \my, w10 // my, 8tap_v, 4tap_v
.ifc \type, prep
uxtw \d_strd, \w
lsl \d_strd, \d_strd, #1
.endif
dup v31.8h, \bdmax // bitdepth_max
clz \bdmax, \bdmax
clz w9, \w
sub \bdmax, \bdmax, #18 // intermediate_bits = clz(bitdepth_max) - 18
mov w12, #6
tst \mx, #(0x7f << 14)
sub w9, w9, #24
add w13, w12, \bdmax // 6 + intermediate_bits
sub w12, w12, \bdmax // 6 - intermediate_bits
movrel x11, X(mc_subpel_filters), -8
b.ne L(\type\()_8tap_h)
tst \my, #(0x7f << 14)
b.ne L(\type\()_8tap_v)
b \type\()_neon
L(\type\()_8tap_h):
cmp \w, #4
ubfx w10, \mx, #7, #7
and \mx, \mx, #0x7f
b.le 4f
mov \mx, w10
4:
tst \my, #(0x7f << 14)
add \xmx, x11, \mx, uxtw #3
b.ne L(\type\()_8tap_hv)
adr x10, L(\type\()_8tap_h_tbl)
dup v30.4s, w12 // 6 - intermediate_bits
ldrh w9, [x10, x9, lsl #1]
neg v30.4s, v30.4s // -(6-intermediate_bits)
.ifc \type, put
dup v29.8h, \bdmax // intermediate_bits
.else
movi v28.8h, #(PREP_BIAS >> 8), lsl #8
.endif
sub x10, x10, w9, uxtw
.ifc \type, put
neg v29.8h, v29.8h // -intermediate_bits
.endif
br x10
20: // 2xN h
.ifc \type, put
add \xmx, \xmx, #2
ld1 {v0.s}[0], [\xmx]
sub \src, \src, #2
add \ds2, \dst, \d_strd
add \sr2, \src, \s_strd
lsl \d_strd, \d_strd, #1
lsl \s_strd, \s_strd, #1
sxtl v0.8h, v0.8b
2:
ld1 {v4.8h}, [\src], \s_strd
ld1 {v6.8h}, [\sr2], \s_strd
ext v5.16b, v4.16b, v4.16b, #2
ext v7.16b, v6.16b, v6.16b, #2
subs \h, \h, #2
trn1 v3.2s, v4.2s, v6.2s
trn2 v6.2s, v4.2s, v6.2s
trn1 v4.2s, v5.2s, v7.2s
trn2 v7.2s, v5.2s, v7.2s
smull v3.4s, v3.4h, v0.h[0]
smlal v3.4s, v4.4h, v0.h[1]
smlal v3.4s, v6.4h, v0.h[2]
smlal v3.4s, v7.4h, v0.h[3]
srshl v3.4s, v3.4s, v30.4s // -(6-intermediate_bits)
sqxtun v3.4h, v3.4s
srshl v3.4h, v3.4h, v29.4h // -intermediate_bits
umin v3.4h, v3.4h, v31.4h
st1 {v3.s}[0], [\dst], \d_strd
st1 {v3.s}[1], [\ds2], \d_strd
b.gt 2b
ret
.endif
40: // 4xN h
add \xmx, \xmx, #2
ld1 {v0.s}[0], [\xmx]
sub \src, \src, #2
add \ds2, \dst, \d_strd
add \sr2, \src, \s_strd
lsl \d_strd, \d_strd, #1
lsl \s_strd, \s_strd, #1
sxtl v0.8h, v0.8b
4:
ld1 {v16.8h}, [\src], \s_strd
ld1 {v20.8h}, [\sr2], \s_strd
ext v17.16b, v16.16b, v16.16b, #2
ext v18.16b, v16.16b, v16.16b, #4
ext v19.16b, v16.16b, v16.16b, #6
ext v21.16b, v20.16b, v20.16b, #2
ext v22.16b, v20.16b, v20.16b, #4
ext v23.16b, v20.16b, v20.16b, #6
subs \h, \h, #2
smull v16.4s, v16.4h, v0.h[0]
smlal v16.4s, v17.4h, v0.h[1]
smlal v16.4s, v18.4h, v0.h[2]
smlal v16.4s, v19.4h, v0.h[3]
smull v20.4s, v20.4h, v0.h[0]
smlal v20.4s, v21.4h, v0.h[1]
smlal v20.4s, v22.4h, v0.h[2]
smlal v20.4s, v23.4h, v0.h[3]
srshl v16.4s, v16.4s, v30.4s // -(6-intermediate_bits)
srshl v20.4s, v20.4s, v30.4s // -(6-intermediate_bits)
.ifc \type, put
sqxtun v16.4h, v16.4s
sqxtun2 v16.8h, v20.4s
srshl v16.8h, v16.8h, v29.8h // -intermediate_bits
umin v16.8h, v16.8h, v31.8h
.else
xtn v16.4h, v16.4s
xtn2 v16.8h, v20.4s
sub v16.8h, v16.8h, v28.8h // PREP_BIAS
.endif
st1 {v16.d}[0], [\dst], \d_strd
st1 {v16.d}[1], [\ds2], \d_strd
b.gt 4b
ret
80:
160:
320:
640:
1280: // 8xN, 16xN, 32xN, ... h
ld1 {v0.8b}, [\xmx]
sub \src, \src, #6
add \ds2, \dst, \d_strd
add \sr2, \src, \s_strd
lsl \s_strd, \s_strd, #1
sxtl v0.8h, v0.8b
sub \s_strd, \s_strd, \w, uxtw #1
sub \s_strd, \s_strd, #16
.ifc \type, put
lsl \d_strd, \d_strd, #1
sub \d_strd, \d_strd, \w, uxtw #1
.endif
81:
ld1 {v16.8h, v17.8h}, [\src], #32
ld1 {v20.8h, v21.8h}, [\sr2], #32
mov \mx, \w
8:
smull v18.4s, v16.4h, v0.h[0]
smull2 v19.4s, v16.8h, v0.h[0]
smull v22.4s, v20.4h, v0.h[0]
smull2 v23.4s, v20.8h, v0.h[0]
.irpc i, 1234567
ext v24.16b, v16.16b, v17.16b, #(2*\i)
ext v25.16b, v20.16b, v21.16b, #(2*\i)
smlal v18.4s, v24.4h, v0.h[\i]
smlal2 v19.4s, v24.8h, v0.h[\i]
smlal v22.4s, v25.4h, v0.h[\i]
smlal2 v23.4s, v25.8h, v0.h[\i]
.endr
subs \mx, \mx, #8
srshl v18.4s, v18.4s, v30.4s // -(6-intermediate_bits)
srshl v19.4s, v19.4s, v30.4s // -(6-intermediate_bits)
srshl v22.4s, v22.4s, v30.4s // -(6-intermediate_bits)
srshl v23.4s, v23.4s, v30.4s // -(6-intermediate_bits)
.ifc \type, put
sqxtun v18.4h, v18.4s
sqxtun2 v18.8h, v19.4s
sqxtun v22.4h, v22.4s
sqxtun2 v22.8h, v23.4s
srshl v18.8h, v18.8h, v29.8h // -intermediate_bits
srshl v22.8h, v22.8h, v29.8h // -intermediate_bits
umin v18.8h, v18.8h, v31.8h
umin v22.8h, v22.8h, v31.8h
.else
xtn v18.4h, v18.4s
xtn2 v18.8h, v19.4s
xtn v22.4h, v22.4s
xtn2 v22.8h, v23.4s
sub v18.8h, v18.8h, v28.8h // PREP_BIAS
sub v22.8h, v22.8h, v28.8h // PREP_BIAS
.endif
st1 {v18.8h}, [\dst], #16
st1 {v22.8h}, [\ds2], #16
b.le 9f
mov v16.16b, v17.16b
mov v20.16b, v21.16b
ld1 {v17.8h}, [\src], #16
ld1 {v21.8h}, [\sr2], #16
b 8b
9:
add \dst, \dst, \d_strd
add \ds2, \ds2, \d_strd
add \src, \src, \s_strd
add \sr2, \sr2, \s_strd
subs \h, \h, #2
b.gt 81b
ret
L(\type\()_8tap_h_tbl):
.hword L(\type\()_8tap_h_tbl) - 1280b
.hword L(\type\()_8tap_h_tbl) - 640b
.hword L(\type\()_8tap_h_tbl) - 320b
.hword L(\type\()_8tap_h_tbl) - 160b
.hword L(\type\()_8tap_h_tbl) - 80b
.hword L(\type\()_8tap_h_tbl) - 40b
.hword L(\type\()_8tap_h_tbl) - 20b
.hword 0
L(\type\()_8tap_v):
cmp \h, #4
ubfx w10, \my, #7, #7
and \my, \my, #0x7f
b.le 4f
mov \my, w10
4:
add \xmy, x11, \my, uxtw #3
.ifc \type, prep
dup v30.4s, w12 // 6 - intermediate_bits
movi v29.8h, #(PREP_BIAS >> 8), lsl #8
.endif
adr x10, L(\type\()_8tap_v_tbl)
ldrh w9, [x10, x9, lsl #1]
.ifc \type, prep
neg v30.4s, v30.4s // -(6-intermediate_bits)
.endif
sub x10, x10, w9, uxtw
br x10
20: // 2xN v
.ifc \type, put
b.gt 28f
cmp \h, #2
add \xmy, \xmy, #2
ld1 {v0.s}[0], [\xmy]
sub \src, \src, \s_strd
add \ds2, \dst, \d_strd
add \sr2, \src, \s_strd
lsl \s_strd, \s_strd, #1
lsl \d_strd, \d_strd, #1
sxtl v0.8h, v0.8b
// 2x2 v
load_s \src, \sr2, \s_strd, v1, v2, v3, v4, v5
interleave_1_s v1, v2, v3, v4, v5
b.gt 24f
smull_smlal_4 v6, v1, v2, v3, v4
sqrshrun_h 6, v6
umin_h v31, .8h, v6
st_s \d_strd, v6, 2
ret
24: // 2x4 v
load_s \sr2, \src, \s_strd, v6, v7
interleave_1_s v5, v6, v7
smull_smlal_4 v16, v1, v2, v3, v4
smull_smlal_4 v17, v3, v4, v5, v6
sqrshrun_h 6, v16, v17
umin_h v31, .8h, v16
st_s \d_strd, v16, 4
ret
28: // 2x8, 2x16 v
ld1 {v0.8b}, [\xmy]
sub \sr2, \src, \s_strd, lsl #1
add \ds2, \dst, \d_strd
sub \src, \sr2, \s_strd
lsl \d_strd, \d_strd, #1
lsl \s_strd, \s_strd, #1
sxtl v0.8h, v0.8b
load_s \src, \sr2, \s_strd, v1, v2, v3, v4, v5, v6, v7
interleave_1_s v1, v2, v3, v4, v5
interleave_1_s v5, v6, v7
216:
subs \h, \h, #8
load_s \sr2, \src, \s_strd, v16, v17, v18, v19
load_s \sr2, \src, \s_strd, v20, v21, v22, v23
interleave_1_s v7, v16, v17, v18, v19
interleave_1_s v19, v20, v21, v22, v23
smull_smlal_8 v24, v1, v2, v3, v4, v5, v6, v7, v16
smull_smlal_8 v25, v3, v4, v5, v6, v7, v16, v17, v18
smull_smlal_8 v26, v5, v6, v7, v16, v17, v18, v19, v20
smull_smlal_8 v27, v7, v16, v17, v18, v19, v20, v21, v22
sqrshrun_h 6, v24, v25, v26, v27
umin_h v31, .8h, v24, v26
st_s \d_strd, v24, 4
st_s \d_strd, v26, 4
b.le 0f
mov v1.16b, v17.16b
mov v2.16b, v18.16b
mov v3.16b, v19.16b
mov v4.16b, v20.16b
mov v5.16b, v21.16b
mov v6.16b, v22.16b
mov v7.16b, v23.16b
b 216b
0:
ret
.endif
40:
b.gt 480f
// 4x2, 4x4 v
cmp \h, #2
add \xmy, \xmy, #2
ld1 {v0.s}[0], [\xmy]
sub \src, \src, \s_strd
add \ds2, \dst, \d_strd
add \sr2, \src, \s_strd
lsl \s_strd, \s_strd, #1
lsl \d_strd, \d_strd, #1
sxtl v0.8h, v0.8b
load_4h \src, \sr2, \s_strd, v1, v2, v3, v4, v5
smull_smlal_4 v6, v1, v2, v3, v4
smull_smlal_4 v7, v2, v3, v4, v5
shift_store_4 \type, \d_strd, v6, v7
b.le 0f
load_4h \sr2, \src, \s_strd, v6, v7
smull_smlal_4 v1, v3, v4, v5, v6
smull_smlal_4 v2, v4, v5, v6, v7
shift_store_4 \type, \d_strd, v1, v2
0:
ret
480: // 4x8, 4x16 v
ld1 {v0.8b}, [\xmy]
sub \sr2, \src, \s_strd, lsl #1
add \ds2, \dst, \d_strd
sub \src, \sr2, \s_strd
lsl \s_strd, \s_strd, #1
lsl \d_strd, \d_strd, #1
sxtl v0.8h, v0.8b
load_4h \src, \sr2, \s_strd, v16, v17, v18, v19, v20, v21, v22
48:
subs \h, \h, #4
load_4h \sr2, \src, \s_strd, v23, v24, v25, v26
smull_smlal_8 v1, v16, v17, v18, v19, v20, v21, v22, v23
smull_smlal_8 v2, v17, v18, v19, v20, v21, v22, v23, v24
smull_smlal_8 v3, v18, v19, v20, v21, v22, v23, v24, v25
smull_smlal_8 v4, v19, v20, v21, v22, v23, v24, v25, v26
shift_store_4 \type, \d_strd, v1, v2, v3, v4
b.le 0f
mov v16.8b, v20.8b
mov v17.8b, v21.8b
mov v18.8b, v22.8b
mov v19.8b, v23.8b
mov v20.8b, v24.8b
mov v21.8b, v25.8b
mov v22.8b, v26.8b
b 48b
0:
ret
80:
b.gt 880f
// 8x2, 8x4 v
cmp \h, #2
add \xmy, \xmy, #2
ld1 {v0.s}[0], [\xmy]
sub \src, \src, \s_strd
add \ds2, \dst, \d_strd
add \sr2, \src, \s_strd
lsl \s_strd, \s_strd, #1
lsl \d_strd, \d_strd, #1
sxtl v0.8h, v0.8b
load_8h \src, \sr2, \s_strd, v1, v2, v3, v4, v5
smull_smlal_4 v16, v1, v2, v3, v4
smull2_smlal2_4 v17, v1, v2, v3, v4
smull_smlal_4 v18, v2, v3, v4, v5
smull2_smlal2_4 v19, v2, v3, v4, v5
shift_store_8 \type, \d_strd, v16, v17, v18, v19
b.le 0f
load_8h \sr2, \src, \s_strd, v6, v7
smull_smlal_4 v16, v3, v4, v5, v6
smull2_smlal2_4 v17, v3, v4, v5, v6
smull_smlal_4 v18, v4, v5, v6, v7
smull2_smlal2_4 v19, v4, v5, v6, v7
shift_store_8 \type, \d_strd, v16, v17, v18, v19
0:
ret
880: // 8x6, 8x8, 8x16, 8x32 v
1680: // 16x8, 16x16, ...
320: // 32x8, 32x16, ...
640:
1280:
ld1 {v0.8b}, [\xmy]
sub \src, \src, \s_strd
sub \src, \src, \s_strd, lsl #1
sxtl v0.8h, v0.8b
mov \my, \h
168:
add \ds2, \dst, \d_strd
add \sr2, \src, \s_strd
lsl \s_strd, \s_strd, #1
lsl \d_strd, \d_strd, #1
load_8h \src, \sr2, \s_strd, v16, v17, v18, v19, v20, v21, v22
88:
subs \h, \h, #2
load_8h \sr2, \src, \s_strd, v23, v24
smull_smlal_8 v1, v16, v17, v18, v19, v20, v21, v22, v23
smull2_smlal2_8 v2, v16, v17, v18, v19, v20, v21, v22, v23
smull_smlal_8 v3, v17, v18, v19, v20, v21, v22, v23, v24
smull2_smlal2_8 v4, v17, v18, v19, v20, v21, v22, v23, v24
shift_store_8 \type, \d_strd, v1, v2, v3, v4
b.le 9f
subs \h, \h, #2
load_8h \sr2, \src, \s_strd, v25, v26
smull_smlal_8 v1, v18, v19, v20, v21, v22, v23, v24, v25
smull2_smlal2_8 v2, v18, v19, v20, v21, v22, v23, v24, v25
smull_smlal_8 v3, v19, v20, v21, v22, v23, v24, v25, v26
smull2_smlal2_8 v4, v19, v20, v21, v22, v23, v24, v25, v26
shift_store_8 \type, \d_strd, v1, v2, v3, v4
b.le 9f
mov v16.16b, v20.16b
mov v17.16b, v21.16b
mov v18.16b, v22.16b
mov v19.16b, v23.16b
mov v20.16b, v24.16b
mov v21.16b, v25.16b
mov v22.16b, v26.16b
b 88b
9:
subs \w, \w, #8
b.le 0f
asr \s_strd, \s_strd, #1
asr \d_strd, \d_strd, #1
msub \src, \s_strd, \xmy, \src
msub \dst, \d_strd, \xmy, \dst
sub \src, \src, \s_strd, lsl #3
mov \h, \my
add \src, \src, #16
add \dst, \dst, #16
b 168b
0:
ret
160:
b.gt 1680b
// 16x2, 16x4 v
add \xmy, \xmy, #2
ld1 {v0.s}[0], [\xmy]
sub \src, \src, \s_strd
sxtl v0.8h, v0.8b
load_16h \src, \src, \s_strd, v16, v17, v18, v19, v20, v21
16:
load_16h \src, \src, \s_strd, v22, v23
subs \h, \h, #1
smull_smlal_4 v1, v16, v18, v20, v22
smull2_smlal2_4 v2, v16, v18, v20, v22
smull_smlal_4 v3, v17, v19, v21, v23
smull2_smlal2_4 v4, v17, v19, v21, v23
shift_store_16 \type, \d_strd, x0, v1, v2, v3, v4
b.le 0f
mov v16.16b, v18.16b
mov v17.16b, v19.16b
mov v18.16b, v20.16b
mov v19.16b, v21.16b
mov v20.16b, v22.16b
mov v21.16b, v23.16b
b 16b
0:
ret
L(\type\()_8tap_v_tbl):
.hword L(\type\()_8tap_v_tbl) - 1280b
.hword L(\type\()_8tap_v_tbl) - 640b
.hword L(\type\()_8tap_v_tbl) - 320b
.hword L(\type\()_8tap_v_tbl) - 160b
.hword L(\type\()_8tap_v_tbl) - 80b
.hword L(\type\()_8tap_v_tbl) - 40b
.hword L(\type\()_8tap_v_tbl) - 20b
.hword 0
L(\type\()_8tap_hv):
cmp \h, #4
ubfx w10, \my, #7, #7
and \my, \my, #0x7f
b.le 4f
mov \my, w10
4:
add \xmy, x11, \my, uxtw #3
adr x10, L(\type\()_8tap_hv_tbl)
dup v30.4s, w12 // 6 - intermediate_bits
ldrh w9, [x10, x9, lsl #1]
neg v30.4s, v30.4s // -(6-intermediate_bits)
.ifc \type, put
dup v29.4s, w13 // 6 + intermediate_bits
.else
movi v29.8h, #(PREP_BIAS >> 8), lsl #8
.endif
sub x10, x10, w9, uxtw
.ifc \type, put
neg v29.4s, v29.4s // -(6+intermediate_bits)
.endif
br x10
20:
.ifc \type, put
add \xmx, \xmx, #2
ld1 {v0.s}[0], [\xmx]
b.gt 280f
add \xmy, \xmy, #2
ld1 {v1.s}[0], [\xmy]
// 2x2, 2x4 hv
sub \sr2, \src, #2
sub \src, \sr2, \s_strd
add \ds2, \dst, \d_strd
lsl \s_strd, \s_strd, #1
lsl \d_strd, \d_strd, #1
sxtl v0.8h, v0.8b
sxtl v1.8h, v1.8b
mov x15, x30
sxtl v1.4s, v1.4h
ld1 {v27.8h}, [\src], \s_strd
ext v28.16b, v27.16b, v27.16b, #2
smull v27.4s, v27.4h, v0.4h
smull v28.4s, v28.4h, v0.4h
addp v27.4s, v27.4s, v28.4s
addp v16.4s, v27.4s, v27.4s
srshl v16.2s, v16.2s, v30.2s // -(6-intermediate_bits)
bl L(\type\()_8tap_filter_2)
trn1 v16.2d, v16.2d, v24.2d
mov v17.16b, v24.16b
2:
bl L(\type\()_8tap_filter_2)
ext v18.16b, v17.16b, v24.16b, #8
mov v19.16b, v24.16b
mul v2.4s, v16.4s, v1.s[0]
mla v2.4s, v17.4s, v1.s[1]
mla v2.4s, v18.4s, v1.s[2]
mla v2.4s, v19.4s, v1.s[3]
srshl v2.4s, v2.4s, v29.4s // -(6+intermediate_bits)
sqxtun v2.4h, v2.4s
umin v2.4h, v2.4h, v31.4h
subs \h, \h, #2
st1 {v2.s}[0], [\dst], \d_strd
st1 {v2.s}[1], [\ds2], \d_strd
b.le 0f
mov v16.16b, v18.16b
mov v17.16b, v19.16b
b 2b
280: // 2x8, 2x16, 2x32 hv
ld1 {v1.8b}, [\xmy]
sub \src, \src, #2
sub \sr2, \src, \s_strd, lsl #1
sub \src, \sr2, \s_strd
add \ds2, \dst, \d_strd
lsl \s_strd, \s_strd, #1
lsl \d_strd, \d_strd, #1
sxtl v0.8h, v0.8b
sxtl v1.8h, v1.8b
mov x15, x30
sxtl2 v2.4s, v1.8h
sxtl v1.4s, v1.4h
ld1 {v27.8h}, [\src], \s_strd
ext v28.16b, v27.16b, v27.16b, #2
smull v27.4s, v27.4h, v0.4h
smull v28.4s, v28.4h, v0.4h
addp v27.4s, v27.4s, v28.4s
addp v16.4s, v27.4s, v27.4s
srshl v16.2s, v16.2s, v30.2s // -(6-intermediate_bits)
bl L(\type\()_8tap_filter_2)
trn1 v16.2d, v16.2d, v24.2d
mov v17.16b, v24.16b
bl L(\type\()_8tap_filter_2)
ext v18.16b, v17.16b, v24.16b, #8
mov v19.16b, v24.16b
bl L(\type\()_8tap_filter_2)
ext v20.16b, v19.16b, v24.16b, #8
mov v21.16b, v24.16b
28:
bl L(\type\()_8tap_filter_2)
ext v22.16b, v21.16b, v24.16b, #8
mov v23.16b, v24.16b
mul v3.4s, v16.4s, v1.s[0]
mla v3.4s, v17.4s, v1.s[1]
mla v3.4s, v18.4s, v1.s[2]
mla v3.4s, v19.4s, v1.s[3]
mla v3.4s, v20.4s, v2.s[0]
mla v3.4s, v21.4s, v2.s[1]
mla v3.4s, v22.4s, v2.s[2]
mla v3.4s, v23.4s, v2.s[3]
srshl v3.4s, v3.4s, v29.4s // -(6+intermediate_bits)
sqxtun v3.4h, v3.4s
umin v3.4h, v3.4h, v31.4h
subs \h, \h, #2
st1 {v3.s}[0], [\dst], \d_strd
st1 {v3.s}[1], [\ds2], \d_strd
b.le 0f
mov v16.16b, v18.16b
mov v17.16b, v19.16b
mov v18.16b, v20.16b
mov v19.16b, v21.16b
mov v20.16b, v22.16b
mov v21.16b, v23.16b
b 28b
0:
br x15
L(\type\()_8tap_filter_2):
ld1 {v25.8h}, [\sr2], \s_strd
ld1 {v27.8h}, [\src], \s_strd
ext v26.16b, v25.16b, v25.16b, #2
ext v28.16b, v27.16b, v27.16b, #2
trn1 v24.2s, v25.2s, v27.2s
trn2 v27.2s, v25.2s, v27.2s
trn1 v25.2s, v26.2s, v28.2s
trn2 v28.2s, v26.2s, v28.2s
smull v24.4s, v24.4h, v0.h[0]
smlal v24.4s, v25.4h, v0.h[1]
smlal v24.4s, v27.4h, v0.h[2]
smlal v24.4s, v28.4h, v0.h[3]
srshl v24.4s, v24.4s, v30.4s // -(6-intermediate_bits)
ret
.endif
40:
add \xmx, \xmx, #2
ld1 {v0.s}[0], [\xmx]
b.gt 480f
add \xmy, \xmy, #2
ld1 {v1.s}[0], [\xmy]
sub \sr2, \src, #2
sub \src, \sr2, \s_strd
add \ds2, \dst, \d_strd
lsl \s_strd, \s_strd, #1
lsl \d_strd, \d_strd, #1
sxtl v0.8h, v0.8b
sxtl v1.8h, v1.8b
mov x15, x30
// 4x2, 4x4 hv
ld1 {v25.8h}, [\src], \s_strd
ext v26.16b, v25.16b, v25.16b, #2
ext v27.16b, v25.16b, v25.16b, #4
ext v28.16b, v25.16b, v25.16b, #6
smull v25.4s, v25.4h, v0.h[0]
smlal v25.4s, v26.4h, v0.h[1]
smlal v25.4s, v27.4h, v0.h[2]
smlal v25.4s, v28.4h, v0.h[3]
srshl v16.4s, v25.4s, v30.4s // -(6-intermediate_bits)
// The intermediates from the horizontal pass fit in 16 bit without
// any bias; we could just as well keep them as .4s, but narrowing
// them to .4h gives a significant speedup on out of order cores
// (at the cost of a smaller slowdown on in-order cores such as A53).
xtn v16.4h, v16.4s
bl L(\type\()_8tap_filter_4)
mov v17.8b, v24.8b
mov v18.8b, v25.8b
4:
bl L(\type\()_8tap_filter_4)
smull v2.4s, v16.4h, v1.h[0]
smlal v2.4s, v17.4h, v1.h[1]
smlal v2.4s, v18.4h, v1.h[2]
smlal v2.4s, v24.4h, v1.h[3]
smull v3.4s, v17.4h, v1.h[0]
smlal v3.4s, v18.4h, v1.h[1]
smlal v3.4s, v24.4h, v1.h[2]
smlal v3.4s, v25.4h, v1.h[3]
.ifc \type, put
srshl v2.4s, v2.4s, v29.4s // -(6+intermediate_bits)
srshl v3.4s, v3.4s, v29.4s // -(6+intermediate_bits)
sqxtun v2.4h, v2.4s
sqxtun2 v2.8h, v3.4s
umin v2.8h, v2.8h, v31.8h
.else
rshrn v2.4h, v2.4s, #6
rshrn2 v2.8h, v3.4s, #6
sub v2.8h, v2.8h, v29.8h // PREP_BIAS
.endif
subs \h, \h, #2
st1 {v2.d}[0], [\dst], \d_strd
st1 {v2.d}[1], [\ds2], \d_strd
b.le 0f
mov v16.8b, v18.8b
mov v17.8b, v24.8b
mov v18.8b, v25.8b
b 4b
480: // 4x8, 4x16, 4x32 hv
ld1 {v1.8b}, [\xmy]
sub \src, \src, #2
sub \sr2, \src, \s_strd, lsl #1
sub \src, \sr2, \s_strd
add \ds2, \dst, \d_strd
lsl \s_strd, \s_strd, #1
lsl \d_strd, \d_strd, #1
sxtl v0.8h, v0.8b
sxtl v1.8h, v1.8b
mov x15, x30
ld1 {v25.8h}, [\src], \s_strd
ext v26.16b, v25.16b, v25.16b, #2
ext v27.16b, v25.16b, v25.16b, #4
ext v28.16b, v25.16b, v25.16b, #6
smull v25.4s, v25.4h, v0.h[0]
smlal v25.4s, v26.4h, v0.h[1]
smlal v25.4s, v27.4h, v0.h[2]
smlal v25.4s, v28.4h, v0.h[3]
srshl v16.4s, v25.4s, v30.4s // -(6-intermediate_bits)
// The intermediates from the horizontal pass fit in 16 bit without
// any bias; we could just as well keep them as .4s, but narrowing
// them to .4h gives a significant speedup on out of order cores
// (at the cost of a smaller slowdown on in-order cores such as A53).
xtn v16.4h, v16.4s
bl L(\type\()_8tap_filter_4)
mov v17.8b, v24.8b
mov v18.8b, v25.8b
bl L(\type\()_8tap_filter_4)
mov v19.8b, v24.8b
mov v20.8b, v25.8b
bl L(\type\()_8tap_filter_4)
mov v21.8b, v24.8b
mov v22.8b, v25.8b
48:
bl L(\type\()_8tap_filter_4)
smull v3.4s, v16.4h, v1.h[0]
smlal v3.4s, v17.4h, v1.h[1]
smlal v3.4s, v18.4h, v1.h[2]
smlal v3.4s, v19.4h, v1.h[3]
smlal v3.4s, v20.4h, v1.h[4]
smlal v3.4s, v21.4h, v1.h[5]
smlal v3.4s, v22.4h, v1.h[6]
smlal v3.4s, v24.4h, v1.h[7]
smull v4.4s, v17.4h, v1.h[0]
smlal v4.4s, v18.4h, v1.h[1]
smlal v4.4s, v19.4h, v1.h[2]
smlal v4.4s, v20.4h, v1.h[3]
smlal v4.4s, v21.4h, v1.h[4]
smlal v4.4s, v22.4h, v1.h[5]
smlal v4.4s, v24.4h, v1.h[6]
smlal v4.4s, v25.4h, v1.h[7]
.ifc \type, put
srshl v3.4s, v3.4s, v29.4s // -(6+intermediate_bits)
srshl v4.4s, v4.4s, v29.4s // -(6+intermediate_bits)
sqxtun v3.4h, v3.4s
sqxtun2 v3.8h, v4.4s
umin v3.8h, v3.8h, v31.8h
.else
rshrn v3.4h, v3.4s, #6
rshrn2 v3.8h, v4.4s, #6
sub v3.8h, v3.8h, v29.8h // PREP_BIAS
.endif
subs \h, \h, #2
st1 {v3.d}[0], [\dst], \d_strd
st1 {v3.d}[1], [\ds2], \d_strd
b.le 0f
mov v16.8b, v18.8b
mov v17.8b, v19.8b
mov v18.8b, v20.8b
mov v19.8b, v21.8b
mov v20.8b, v22.8b
mov v21.8b, v24.8b
mov v22.8b, v25.8b
b 48b
0:
br x15
L(\type\()_8tap_filter_4):
ld1 {v24.8h}, [\sr2], \s_strd
ld1 {v25.8h}, [\src], \s_strd
ext v26.16b, v24.16b, v24.16b, #2
ext v27.16b, v24.16b, v24.16b, #4
ext v28.16b, v24.16b, v24.16b, #6
smull v24.4s, v24.4h, v0.h[0]
smlal v24.4s, v26.4h, v0.h[1]
smlal v24.4s, v27.4h, v0.h[2]
smlal v24.4s, v28.4h, v0.h[3]
ext v26.16b, v25.16b, v25.16b, #2
ext v27.16b, v25.16b, v25.16b, #4
ext v28.16b, v25.16b, v25.16b, #6
smull v25.4s, v25.4h, v0.h[0]
smlal v25.4s, v26.4h, v0.h[1]
smlal v25.4s, v27.4h, v0.h[2]
smlal v25.4s, v28.4h, v0.h[3]
srshl v24.4s, v24.4s, v30.4s // -(6-intermediate_bits)
srshl v25.4s, v25.4s, v30.4s // -(6-intermediate_bits)
xtn v24.4h, v24.4s
xtn v25.4h, v25.4s
ret
80:
160:
320:
b.gt 880f
add \xmy, \xmy, #2
ld1 {v0.8b}, [\xmx]
ld1 {v1.s}[0], [\xmy]
sub \src, \src, #6
sub \src, \src, \s_strd
sxtl v0.8h, v0.8b
sxtl v1.8h, v1.8b
mov x15, x30
mov \my, \h
164: // 8x2, 8x4, 16x2, 16x4, 32x2, 32x4 hv
add \ds2, \dst, \d_strd
add \sr2, \src, \s_strd
lsl \d_strd, \d_strd, #1
lsl \s_strd, \s_strd, #1
ld1 {v27.8h, v28.8h}, [\src], \s_strd
smull v24.4s, v27.4h, v0.h[0]
smull2 v25.4s, v27.8h, v0.h[0]
.irpc i, 1234567
ext v26.16b, v27.16b, v28.16b, #(2*\i)
smlal v24.4s, v26.4h, v0.h[\i]
smlal2 v25.4s, v26.8h, v0.h[\i]
.endr
srshl v24.4s, v24.4s, v30.4s // -(6-intermediate_bits)
srshl v25.4s, v25.4s, v30.4s // -(6-intermediate_bits)
// The intermediates from the horizontal pass fit in 16 bit without
// any bias; we could just as well keep them as .4s, but narrowing
// them to .4h gives a significant speedup on out of order cores
// (at the cost of a smaller slowdown on in-order cores such as A53),
// and conserves register space (no need to clobber v8-v15).
xtn v16.4h, v24.4s
xtn2 v16.8h, v25.4s
bl L(\type\()_8tap_filter_8)
mov v17.16b, v23.16b
mov v18.16b, v24.16b
8:
smull v2.4s, v16.4h, v1.h[0]
smull2 v3.4s, v16.8h, v1.h[0]
bl L(\type\()_8tap_filter_8)
smull v4.4s, v17.4h, v1.h[0]
smull2 v5.4s, v17.8h, v1.h[0]
smlal v2.4s, v17.4h, v1.h[1]
smlal2 v3.4s, v17.8h, v1.h[1]
smlal v4.4s, v18.4h, v1.h[1]
smlal2 v5.4s, v18.8h, v1.h[1]
smlal v2.4s, v18.4h, v1.h[2]
smlal2 v3.4s, v18.8h, v1.h[2]
smlal v4.4s, v23.4h, v1.h[2]
smlal2 v5.4s, v23.8h, v1.h[2]
smlal v2.4s, v23.4h, v1.h[3]
smlal2 v3.4s, v23.8h, v1.h[3]
smlal v4.4s, v24.4h, v1.h[3]
smlal2 v5.4s, v24.8h, v1.h[3]
.ifc \type, put
srshl v2.4s, v2.4s, v29.4s // -(6+intermediate_bits)
srshl v3.4s, v3.4s, v29.4s // -(6+intermediate_bits)
srshl v4.4s, v4.4s, v29.4s // -(6+intermediate_bits)
srshl v5.4s, v5.4s, v29.4s // -(6+intermediate_bits)
sqxtun v2.4h, v2.4s
sqxtun2 v2.8h, v3.4s
sqxtun v3.4h, v4.4s
sqxtun2 v3.8h, v5.4s
umin v2.8h, v2.8h, v31.8h
umin v3.8h, v3.8h, v31.8h
.else
rshrn v2.4h, v2.4s, #6
rshrn2 v2.8h, v3.4s, #6
rshrn v3.4h, v4.4s, #6
rshrn2 v3.8h, v5.4s, #6
sub v2.8h, v2.8h, v29.8h // PREP_BIAS
sub v3.8h, v3.8h, v29.8h // PREP_BIAS
.endif
subs \h, \h, #2
st1 {v2.8h}, [\dst], \d_strd
st1 {v3.8h}, [\ds2], \d_strd
b.le 9f
mov v16.16b, v18.16b
mov v17.16b, v23.16b
mov v18.16b, v24.16b
b 8b
9:
subs \w, \w, #8
b.le 0f
asr \s_strd, \s_strd, #1
asr \d_strd, \d_strd, #1
msub \src, \s_strd, \xmy, \src
msub \dst, \d_strd, \xmy, \dst
sub \src, \src, \s_strd, lsl #2
mov \h, \my
add \src, \src, #16
add \dst, \dst, #16
b 164b
880: // 8x8, 8x16, ..., 16x8, ..., 32x8, ... hv
640:
1280:
ld1 {v0.8b}, [\xmx]
ld1 {v1.8b}, [\xmy]
sub \src, \src, #6
sub \src, \src, \s_strd
sub \src, \src, \s_strd, lsl #1
sxtl v0.8h, v0.8b
sxtl v1.8h, v1.8b
mov x15, x30
mov \my, \h
168:
add \ds2, \dst, \d_strd
add \sr2, \src, \s_strd
lsl \d_strd, \d_strd, #1
lsl \s_strd, \s_strd, #1
ld1 {v27.8h, v28.8h}, [\src], \s_strd
smull v24.4s, v27.4h, v0.h[0]
smull2 v25.4s, v27.8h, v0.h[0]
.irpc i, 1234567
ext v26.16b, v27.16b, v28.16b, #(2*\i)
smlal v24.4s, v26.4h, v0.h[\i]
smlal2 v25.4s, v26.8h, v0.h[\i]
.endr
srshl v24.4s, v24.4s, v30.4s // -(6-intermediate_bits)
srshl v25.4s, v25.4s, v30.4s // -(6-intermediate_bits)
// The intermediates from the horizontal pass fit in 16 bit without
// any bias; we could just as well keep them as .4s, but narrowing
// them to .4h gives a significant speedup on out of order cores
// (at the cost of a smaller slowdown on in-order cores such as A53),
// and conserves register space (no need to clobber v8-v15).
xtn v16.4h, v24.4s
xtn2 v16.8h, v25.4s
bl L(\type\()_8tap_filter_8)
mov v17.16b, v23.16b
mov v18.16b, v24.16b
bl L(\type\()_8tap_filter_8)
mov v19.16b, v23.16b
mov v20.16b, v24.16b
bl L(\type\()_8tap_filter_8)
mov v21.16b, v23.16b
mov v22.16b, v24.16b
88:
smull v2.4s, v16.4h, v1.h[0]
smull2 v3.4s, v16.8h, v1.h[0]
bl L(\type\()_8tap_filter_8)
smull v4.4s, v17.4h, v1.h[0]
smull2 v5.4s, v17.8h, v1.h[0]
smlal v2.4s, v17.4h, v1.h[1]
smlal2 v3.4s, v17.8h, v1.h[1]
smlal v4.4s, v18.4h, v1.h[1]
smlal2 v5.4s, v18.8h, v1.h[1]
smlal v2.4s, v18.4h, v1.h[2]
smlal2 v3.4s, v18.8h, v1.h[2]
smlal v4.4s, v19.4h, v1.h[2]
smlal2 v5.4s, v19.8h, v1.h[2]
smlal v2.4s, v19.4h, v1.h[3]
smlal2 v3.4s, v19.8h, v1.h[3]
smlal v4.4s, v20.4h, v1.h[3]
smlal2 v5.4s, v20.8h, v1.h[3]
smlal v2.4s, v20.4h, v1.h[4]
smlal2 v3.4s, v20.8h, v1.h[4]
smlal v4.4s, v21.4h, v1.h[4]
smlal2 v5.4s, v21.8h, v1.h[4]
smlal v2.4s, v21.4h, v1.h[5]
smlal2 v3.4s, v21.8h, v1.h[5]
smlal v4.4s, v22.4h, v1.h[5]
smlal2 v5.4s, v22.8h, v1.h[5]
smlal v2.4s, v22.4h, v1.h[6]
smlal2 v3.4s, v22.8h, v1.h[6]
smlal v4.4s, v23.4h, v1.h[6]
smlal2 v5.4s, v23.8h, v1.h[6]
smlal v2.4s, v23.4h, v1.h[7]
smlal2 v3.4s, v23.8h, v1.h[7]
smlal v4.4s, v24.4h, v1.h[7]
smlal2 v5.4s, v24.8h, v1.h[7]
.ifc \type, put
srshl v2.4s, v2.4s, v29.4s // -(6+intermediate_bits)
srshl v3.4s, v3.4s, v29.4s // -(6+intermediate_bits)
srshl v4.4s, v4.4s, v29.4s // -(6+intermediate_bits)
srshl v5.4s, v5.4s, v29.4s // -(6+intermediate_bits)
sqxtun v2.4h, v2.4s
sqxtun2 v2.8h, v3.4s
sqxtun v3.4h, v4.4s
sqxtun2 v3.8h, v5.4s
umin v2.8h, v2.8h, v31.8h
umin v3.8h, v3.8h, v31.8h
.else
rshrn v2.4h, v2.4s, #6
rshrn2 v2.8h, v3.4s, #6
rshrn v3.4h, v4.4s, #6
rshrn2 v3.8h, v5.4s, #6
sub v2.8h, v2.8h, v29.8h // PREP_BIAS
sub v3.8h, v3.8h, v29.8h // PREP_BIAS
.endif
subs \h, \h, #2
st1 {v2.8h}, [\dst], \d_strd
st1 {v3.8h}, [\ds2], \d_strd
b.le 9f
mov v16.16b, v18.16b
mov v17.16b, v19.16b
mov v18.16b, v20.16b
mov v19.16b, v21.16b
mov v20.16b, v22.16b
mov v21.16b, v23.16b
mov v22.16b, v24.16b
b 88b
9:
subs \w, \w, #8
b.le 0f
asr \s_strd, \s_strd, #1
asr \d_strd, \d_strd, #1
msub \src, \s_strd, \xmy, \src
msub \dst, \d_strd, \xmy, \dst
sub \src, \src, \s_strd, lsl #3
mov \h, \my
add \src, \src, #16
add \dst, \dst, #16
b 168b
0:
br x15
L(\type\()_8tap_filter_8):
ld1 {v4.8h, v5.8h}, [\sr2], \s_strd
ld1 {v6.8h, v7.8h}, [\src], \s_strd
smull v25.4s, v4.4h, v0.h[0]
smull2 v26.4s, v4.8h, v0.h[0]
smull v27.4s, v6.4h, v0.h[0]
smull2 v28.4s, v6.8h, v0.h[0]
.irpc i, 1234567
ext v23.16b, v4.16b, v5.16b, #(2*\i)
ext v24.16b, v6.16b, v7.16b, #(2*\i)
smlal v25.4s, v23.4h, v0.h[\i]
smlal2 v26.4s, v23.8h, v0.h[\i]
smlal v27.4s, v24.4h, v0.h[\i]
smlal2 v28.4s, v24.8h, v0.h[\i]
.endr
srshl v25.4s, v25.4s, v30.4s // -(6-intermediate_bits)
srshl v26.4s, v26.4s, v30.4s // -(6-intermediate_bits)
srshl v27.4s, v27.4s, v30.4s // -(6-intermediate_bits)
srshl v28.4s, v28.4s, v30.4s // -(6-intermediate_bits)
xtn v23.4h, v25.4s
xtn2 v23.8h, v26.4s
xtn v24.4h, v27.4s
xtn2 v24.8h, v28.4s
ret
L(\type\()_8tap_hv_tbl):
.hword L(\type\()_8tap_hv_tbl) - 1280b
.hword L(\type\()_8tap_hv_tbl) - 640b
.hword L(\type\()_8tap_hv_tbl) - 320b
.hword L(\type\()_8tap_hv_tbl) - 160b
.hword L(\type\()_8tap_hv_tbl) - 80b
.hword L(\type\()_8tap_hv_tbl) - 40b
.hword L(\type\()_8tap_hv_tbl) - 20b
.hword 0
endfunc
function \type\()_bilin_16bpc_neon, export=1
.ifc \bdmax, w8
ldr w8, [sp]
.endif
dup v1.8h, \mx
dup v3.8h, \my
mov w10, #16
sub w9, w10, \mx
sub w10, w10, \my
dup v0.8h, w9
dup v2.8h, w10
.ifc \type, prep
uxtw \d_strd, \w
lsl \d_strd, \d_strd, #1
.endif
clz \bdmax, \bdmax // bitdepth_max
clz w9, \w
sub \bdmax, \bdmax, #18 // intermediate_bits = clz(bitdepth_max) - 18
mov w11, #4
sub w9, w9, #24
sub w11, w11, \bdmax // 4 - intermediate_bits
add w12, \bdmax, #4 // 4 + intermediate_bits
cbnz \mx, L(\type\()_bilin_h)
cbnz \my, L(\type\()_bilin_v)
b \type\()_neon
L(\type\()_bilin_h):
cbnz \my, L(\type\()_bilin_hv)
adr x10, L(\type\()_bilin_h_tbl)
dup v31.8h, w11 // 4 - intermediate_bits
ldrh w9, [x10, x9, lsl #1]
neg v31.8h, v31.8h // -(4-intermediate_bits)
.ifc \type, put
dup v30.8h, \bdmax // intermediate_bits
.else
movi v29.8h, #(PREP_BIAS >> 8), lsl #8
.endif
sub x10, x10, w9, uxtw
.ifc \type, put
neg v30.8h, v30.8h // -intermediate_bits
.endif
br x10
20: // 2xN h
.ifc \type, put
add \ds2, \dst, \d_strd
add \sr2, \src, \s_strd
lsl \d_strd, \d_strd, #1
lsl \s_strd, \s_strd, #1
2:
ld1 {v4.4h}, [\src], \s_strd
ld1 {v6.4h}, [\sr2], \s_strd
ext v5.8b, v4.8b, v4.8b, #2
ext v7.8b, v6.8b, v6.8b, #2
trn1 v4.2s, v4.2s, v6.2s
trn1 v5.2s, v5.2s, v7.2s
subs \h, \h, #2
mul v4.4h, v4.4h, v0.4h
mla v4.4h, v5.4h, v1.4h
urshl v4.4h, v4.4h, v31.4h
urshl v4.4h, v4.4h, v30.4h
st1 {v4.s}[0], [\dst], \d_strd
st1 {v4.s}[1], [\ds2], \d_strd
b.gt 2b
ret
.endif
40: // 4xN h
add \ds2, \dst, \d_strd
add \sr2, \src, \s_strd
lsl \d_strd, \d_strd, #1
lsl \s_strd, \s_strd, #1
4:
ld1 {v4.8h}, [\src], \s_strd
ld1 {v6.8h}, [\sr2], \s_strd
ext v5.16b, v4.16b, v4.16b, #2
ext v7.16b, v6.16b, v6.16b, #2
trn1 v4.2d, v4.2d, v6.2d
trn1 v5.2d, v5.2d, v7.2d
subs \h, \h, #2
mul v4.8h, v4.8h, v0.8h
mla v4.8h, v5.8h, v1.8h
urshl v4.8h, v4.8h, v31.8h
.ifc \type, put
urshl v4.8h, v4.8h, v30.8h
.else
sub v4.8h, v4.8h, v29.8h
.endif
st1 {v4.d}[0], [\dst], \d_strd
st1 {v4.d}[1], [\ds2], \d_strd
b.gt 4b
ret
80: // 8xN h
add \ds2, \dst, \d_strd
add \sr2, \src, \s_strd
lsl \d_strd, \d_strd, #1
lsl \s_strd, \s_strd, #1
8:
ldr h5, [\src, #16]
ldr h7, [\sr2, #16]
ld1 {v4.8h}, [\src], \s_strd
ld1 {v6.8h}, [\sr2], \s_strd
ext v5.16b, v4.16b, v5.16b, #2
ext v7.16b, v6.16b, v7.16b, #2
subs \h, \h, #2
mul v4.8h, v4.8h, v0.8h
mla v4.8h, v5.8h, v1.8h
mul v6.8h, v6.8h, v0.8h
mla v6.8h, v7.8h, v1.8h
urshl v4.8h, v4.8h, v31.8h
urshl v6.8h, v6.8h, v31.8h
.ifc \type, put
urshl v4.8h, v4.8h, v30.8h
urshl v6.8h, v6.8h, v30.8h
.else
sub v4.8h, v4.8h, v29.8h
sub v6.8h, v6.8h, v29.8h
.endif
st1 {v4.8h}, [\dst], \d_strd
st1 {v6.8h}, [\ds2], \d_strd
b.gt 8b
ret
160:
320:
640:
1280: // 16xN, 32xN, ... h
add \ds2, \dst, \d_strd
add \sr2, \src, \s_strd
lsl \s_strd, \s_strd, #1
sub \s_strd, \s_strd, \w, uxtw #1
sub \s_strd, \s_strd, #16
.ifc \type, put
lsl \d_strd, \d_strd, #1
sub \d_strd, \d_strd, \w, uxtw #1
.endif
161:
ld1 {v16.8h}, [\src], #16
ld1 {v21.8h}, [\sr2], #16
mov \mx, \w
16:
ld1 {v17.8h, v18.8h}, [\src], #32
ld1 {v22.8h, v23.8h}, [\sr2], #32
ext v19.16b, v16.16b, v17.16b, #2
ext v20.16b, v17.16b, v18.16b, #2
ext v24.16b, v21.16b, v22.16b, #2
ext v25.16b, v22.16b, v23.16b, #2
mul v16.8h, v16.8h, v0.8h
mla v16.8h, v19.8h, v1.8h
mul v17.8h, v17.8h, v0.8h
mla v17.8h, v20.8h, v1.8h
mul v21.8h, v21.8h, v0.8h
mla v21.8h, v24.8h, v1.8h
mul v22.8h, v22.8h, v0.8h
mla v22.8h, v25.8h, v1.8h
urshl v16.8h, v16.8h, v31.8h
urshl v17.8h, v17.8h, v31.8h
urshl v21.8h, v21.8h, v31.8h
urshl v22.8h, v22.8h, v31.8h
subs \mx, \mx, #16
.ifc \type, put
urshl v16.8h, v16.8h, v30.8h
urshl v17.8h, v17.8h, v30.8h
urshl v21.8h, v21.8h, v30.8h
urshl v22.8h, v22.8h, v30.8h
.else
sub v16.8h, v16.8h, v29.8h
sub v17.8h, v17.8h, v29.8h
sub v21.8h, v21.8h, v29.8h
sub v22.8h, v22.8h, v29.8h
.endif
st1 {v16.8h, v17.8h}, [\dst], #32
st1 {v21.8h, v22.8h}, [\ds2], #32
b.le 9f
mov v16.16b, v18.16b
mov v21.16b, v23.16b
b 16b
9:
add \dst, \dst, \d_strd
add \ds2, \ds2, \d_strd
add \src, \src, \s_strd
add \sr2, \sr2, \s_strd
subs \h, \h, #2
b.gt 161b
ret
L(\type\()_bilin_h_tbl):
.hword L(\type\()_bilin_h_tbl) - 1280b
.hword L(\type\()_bilin_h_tbl) - 640b
.hword L(\type\()_bilin_h_tbl) - 320b
.hword L(\type\()_bilin_h_tbl) - 160b
.hword L(\type\()_bilin_h_tbl) - 80b
.hword L(\type\()_bilin_h_tbl) - 40b
.hword L(\type\()_bilin_h_tbl) - 20b
.hword 0
L(\type\()_bilin_v):
cmp \h, #4
adr x10, L(\type\()_bilin_v_tbl)
.ifc \type, prep
dup v31.8h, w11 // 4 - intermediate_bits
.endif
ldrh w9, [x10, x9, lsl #1]
.ifc \type, prep
movi v29.8h, #(PREP_BIAS >> 8), lsl #8
neg v31.8h, v31.8h // -(4-intermediate_bits)
.endif
sub x10, x10, w9, uxtw
br x10
20: // 2xN v
.ifc \type, put
cmp \h, #2
add \ds2, \dst, \d_strd
add \sr2, \src, \s_strd
lsl \s_strd, \s_strd, #1
lsl \d_strd, \d_strd, #1
// 2x2 v
ld1 {v16.s}[0], [\src], \s_strd
b.gt 24f
ld1 {v17.s}[0], [\sr2], \s_strd
ld1 {v18.s}[0], [\src], \s_strd
trn1 v16.2s, v16.2s, v17.2s
trn1 v17.2s, v17.2s, v18.2s
mul v4.4h, v16.4h, v2.4h
mla v4.4h, v17.4h, v3.4h
urshr v4.8h, v4.8h, #4
st1 {v4.s}[0], [\dst]
st1 {v4.s}[1], [\ds2]
ret
24: // 2x4, 2x8, ... v
ld1 {v17.s}[0], [\sr2], \s_strd
ld1 {v18.s}[0], [\src], \s_strd
ld1 {v19.s}[0], [\sr2], \s_strd
ld1 {v20.s}[0], [\src], \s_strd
trn1 v16.2s, v16.2s, v17.2s
trn1 v17.2s, v17.2s, v18.2s
trn1 v18.2s, v18.2s, v19.2s
trn1 v19.2s, v19.2s, v20.2s
trn1 v16.2d, v16.2d, v18.2d
trn1 v17.2d, v17.2d, v19.2d
mul v4.8h, v16.8h, v2.8h
mla v4.8h, v17.8h, v3.8h
subs \h, \h, #4
urshr v4.8h, v4.8h, #4
st1 {v4.s}[0], [\dst], \d_strd
st1 {v4.s}[1], [\ds2], \d_strd
st1 {v4.s}[2], [\dst], \d_strd
st1 {v4.s}[3], [\ds2], \d_strd
b.le 0f
mov v16.8b, v20.8b
b 24b
0:
ret
.endif
40: // 4xN v
add \ds2, \dst, \d_strd
add \sr2, \src, \s_strd
lsl \s_strd, \s_strd, #1
lsl \d_strd, \d_strd, #1
ld1 {v16.4h}, [\src], \s_strd
4:
ld1 {v17.4h}, [\sr2], \s_strd
ld1 {v18.4h}, [\src], \s_strd
trn1 v16.2d, v16.2d, v17.2d
trn1 v17.2d, v17.2d, v18.2d
mul v4.8h, v16.8h, v2.8h
mla v4.8h, v17.8h, v3.8h
subs \h, \h, #2
.ifc \type, put
urshr v4.8h, v4.8h, #4
.else
urshl v4.8h, v4.8h, v31.8h
sub v4.8h, v4.8h, v29.8h
.endif
st1 {v4.d}[0], [\dst], \d_strd
st1 {v4.d}[1], [\ds2], \d_strd
b.le 0f
mov v16.8b, v18.8b
b 4b
0:
ret
80: // 8xN v
add \ds2, \dst, \d_strd
add \sr2, \src, \s_strd
lsl \s_strd, \s_strd, #1
lsl \d_strd, \d_strd, #1
ld1 {v16.8h}, [\src], \s_strd
8:
ld1 {v17.8h}, [\sr2], \s_strd
ld1 {v18.8h}, [\src], \s_strd
mul v4.8h, v16.8h, v2.8h
mla v4.8h, v17.8h, v3.8h
mul v5.8h, v17.8h, v2.8h
mla v5.8h, v18.8h, v3.8h
subs \h, \h, #2
.ifc \type, put
urshr v4.8h, v4.8h, #4
urshr v5.8h, v5.8h, #4
.else
urshl v4.8h, v4.8h, v31.8h
urshl v5.8h, v5.8h, v31.8h
sub v4.8h, v4.8h, v29.8h
sub v5.8h, v5.8h, v29.8h
.endif
st1 {v4.8h}, [\dst], \d_strd
st1 {v5.8h}, [\ds2], \d_strd
b.le 0f
mov v16.16b, v18.16b
b 8b
0:
ret
160: // 16xN, 32xN, ...
320:
640:
1280:
mov \my, \h
1:
add \ds2, \dst, \d_strd
add \sr2, \src, \s_strd
lsl \s_strd, \s_strd, #1
lsl \d_strd, \d_strd, #1
ld1 {v16.8h, v17.8h}, [\src], \s_strd
2:
ld1 {v18.8h, v19.8h}, [\sr2], \s_strd
ld1 {v20.8h, v21.8h}, [\src], \s_strd
mul v4.8h, v16.8h, v2.8h
mla v4.8h, v18.8h, v3.8h
mul v5.8h, v17.8h, v2.8h
mla v5.8h, v19.8h, v3.8h
mul v6.8h, v18.8h, v2.8h
mla v6.8h, v20.8h, v3.8h
mul v7.8h, v19.8h, v2.8h
mla v7.8h, v21.8h, v3.8h
subs \h, \h, #2
.ifc \type, put
urshr v4.8h, v4.8h, #4
urshr v5.8h, v5.8h, #4
urshr v6.8h, v6.8h, #4
urshr v7.8h, v7.8h, #4
.else
urshl v4.8h, v4.8h, v31.8h
urshl v5.8h, v5.8h, v31.8h
urshl v6.8h, v6.8h, v31.8h
urshl v7.8h, v7.8h, v31.8h
sub v4.8h, v4.8h, v29.8h
sub v5.8h, v5.8h, v29.8h
sub v6.8h, v6.8h, v29.8h
sub v7.8h, v7.8h, v29.8h
.endif
st1 {v4.8h, v5.8h}, [\dst], \d_strd
st1 {v6.8h, v7.8h}, [\ds2], \d_strd
b.le 9f
mov v16.16b, v20.16b
mov v17.16b, v21.16b
b 2b
9:
subs \w, \w, #16
b.le 0f
asr \s_strd, \s_strd, #1
asr \d_strd, \d_strd, #1
msub \src, \s_strd, \xmy, \src
msub \dst, \d_strd, \xmy, \dst
sub \src, \src, \s_strd, lsl #1
mov \h, \my
add \src, \src, #32
add \dst, \dst, #32
b 1b
0:
ret
L(\type\()_bilin_v_tbl):
.hword L(\type\()_bilin_v_tbl) - 1280b
.hword L(\type\()_bilin_v_tbl) - 640b
.hword L(\type\()_bilin_v_tbl) - 320b
.hword L(\type\()_bilin_v_tbl) - 160b
.hword L(\type\()_bilin_v_tbl) - 80b
.hword L(\type\()_bilin_v_tbl) - 40b
.hword L(\type\()_bilin_v_tbl) - 20b
.hword 0
L(\type\()_bilin_hv):
adr x10, L(\type\()_bilin_hv_tbl)
dup v31.8h, w11 // 4 - intermediate_bits
ldrh w9, [x10, x9, lsl #1]
neg v31.8h, v31.8h // -(4-intermediate_bits)
.ifc \type, put
dup v30.4s, w12 // 4 + intermediate_bits
.else
movi v29.8h, #(PREP_BIAS >> 8), lsl #8
.endif
sub x10, x10, w9, uxtw
.ifc \type, put
neg v30.4s, v30.4s // -(4+intermediate_bits)
.endif
br x10
20: // 2xN hv
.ifc \type, put
add \sr2, \src, \s_strd
add \ds2, \dst, \d_strd
lsl \s_strd, \s_strd, #1
lsl \d_strd, \d_strd, #1
ld1 {v20.4h}, [\src], \s_strd
ext v21.8b, v20.8b, v20.8b, #2
mul v16.4h, v20.4h, v0.4h
mla v16.4h, v21.4h, v1.4h
urshl v16.4h, v16.4h, v31.4h
2:
ld1 {v22.4h}, [\sr2], \s_strd
ld1 {v24.4h}, [\src], \s_strd
ext v23.8b, v22.8b, v22.8b, #2
ext v25.8b, v24.8b, v24.8b, #2
trn1 v22.2s, v22.2s, v24.2s
trn1 v23.2s, v23.2s, v25.2s
mul v17.4h, v22.4h, v0.4h
mla v17.4h, v23.4h, v1.4h
urshl v17.4h, v17.4h, v31.4h
trn1 v16.2s, v16.2s, v17.2s
umull v4.4s, v16.4h, v2.4h
umlal v4.4s, v17.4h, v3.4h
urshl v4.4s, v4.4s, v30.4s
xtn v4.4h, v4.4s
subs \h, \h, #2
st1 {v4.s}[0], [\dst], \d_strd
st1 {v4.s}[1], [\ds2], \d_strd
b.le 0f
trn2 v16.2s, v17.2s, v17.2s
b 2b
0:
ret
.endif
40: // 4xN hv
add \sr2, \src, \s_strd
add \ds2, \dst, \d_strd
lsl \s_strd, \s_strd, #1
lsl \d_strd, \d_strd, #1
ld1 {v20.8h}, [\src], \s_strd
ext v21.16b, v20.16b, v20.16b, #2
mul v16.4h, v20.4h, v0.4h
mla v16.4h, v21.4h, v1.4h
urshl v16.4h, v16.4h, v31.4h
4:
ld1 {v22.8h}, [\sr2], \s_strd
ld1 {v24.8h}, [\src], \s_strd
ext v23.16b, v22.16b, v22.16b, #2
ext v25.16b, v24.16b, v24.16b, #2
trn1 v22.2d, v22.2d, v24.2d
trn1 v23.2d, v23.2d, v25.2d
mul v17.8h, v22.8h, v0.8h
mla v17.8h, v23.8h, v1.8h
urshl v17.8h, v17.8h, v31.8h
trn1 v16.2d, v16.2d, v17.2d
umull v4.4s, v16.4h, v2.4h
umlal v4.4s, v17.4h, v3.4h
umull2 v5.4s, v16.8h, v2.8h
umlal2 v5.4s, v17.8h, v3.8h
.ifc \type, put
urshl v4.4s, v4.4s, v30.4s
urshl v5.4s, v5.4s, v30.4s
xtn v4.4h, v4.4s
xtn2 v4.8h, v5.4s
.else
rshrn v4.4h, v4.4s, #4
rshrn2 v4.8h, v5.4s, #4
sub v4.8h, v4.8h, v29.8h
.endif
subs \h, \h, #2
st1 {v4.d}[0], [\dst], \d_strd
st1 {v4.d}[1], [\ds2], \d_strd
b.le 0f
trn2 v16.2d, v17.2d, v17.2d
b 4b
0:
ret
80: // 8xN, 16xN, ... hv
160:
320:
640:
1280:
mov \my, \h
1:
add \sr2, \src, \s_strd
add \ds2, \dst, \d_strd
lsl \s_strd, \s_strd, #1
lsl \d_strd, \d_strd, #1
ldr h21, [\src, #16]
ld1 {v20.8h}, [\src], \s_strd
ext v21.16b, v20.16b, v21.16b, #2
mul v16.8h, v20.8h, v0.8h
mla v16.8h, v21.8h, v1.8h
urshl v16.8h, v16.8h, v31.8h
2:
ldr h23, [\sr2, #16]
ld1 {v22.8h}, [\sr2], \s_strd
ldr h25, [\src, #16]
ld1 {v24.8h}, [\src], \s_strd
ext v23.16b, v22.16b, v23.16b, #2
ext v25.16b, v24.16b, v25.16b, #2
mul v17.8h, v22.8h, v0.8h
mla v17.8h, v23.8h, v1.8h
mul v18.8h, v24.8h, v0.8h
mla v18.8h, v25.8h, v1.8h
urshl v17.8h, v17.8h, v31.8h
urshl v18.8h, v18.8h, v31.8h
umull v4.4s, v16.4h, v2.4h
umlal v4.4s, v17.4h, v3.4h
umull2 v5.4s, v16.8h, v2.8h
umlal2 v5.4s, v17.8h, v3.8h
umull v6.4s, v17.4h, v2.4h
umlal v6.4s, v18.4h, v3.4h
umull2 v7.4s, v17.8h, v2.8h
umlal2 v7.4s, v18.8h, v3.8h
.ifc \type, put
urshl v4.4s, v4.4s, v30.4s
urshl v5.4s, v5.4s, v30.4s
urshl v6.4s, v6.4s, v30.4s
urshl v7.4s, v7.4s, v30.4s
xtn v4.4h, v4.4s
xtn2 v4.8h, v5.4s
xtn v5.4h, v6.4s
xtn2 v5.8h, v7.4s
.else
rshrn v4.4h, v4.4s, #4
rshrn2 v4.8h, v5.4s, #4
rshrn v5.4h, v6.4s, #4
rshrn2 v5.8h, v7.4s, #4
sub v4.8h, v4.8h, v29.8h
sub v5.8h, v5.8h, v29.8h
.endif
subs \h, \h, #2
st1 {v4.8h}, [\dst], \d_strd
st1 {v5.8h}, [\ds2], \d_strd
b.le 9f
mov v16.16b, v18.16b
b 2b
9:
subs \w, \w, #8
b.le 0f
asr \s_strd, \s_strd, #1
asr \d_strd, \d_strd, #1
msub \src, \s_strd, \xmy, \src
msub \dst, \d_strd, \xmy, \dst
sub \src, \src, \s_strd, lsl #1
mov \h, \my
add \src, \src, #16
add \dst, \dst, #16
b 1b
0:
ret
L(\type\()_bilin_hv_tbl):
.hword L(\type\()_bilin_hv_tbl) - 1280b
.hword L(\type\()_bilin_hv_tbl) - 640b
.hword L(\type\()_bilin_hv_tbl) - 320b
.hword L(\type\()_bilin_hv_tbl) - 160b
.hword L(\type\()_bilin_hv_tbl) - 80b
.hword L(\type\()_bilin_hv_tbl) - 40b
.hword L(\type\()_bilin_hv_tbl) - 20b
.hword 0
endfunc
.endm
filter_fn put, x0, x1, x2, x3, w4, w5, w6, x6, w7, x7, w8, x9, x10
filter_fn prep, x0, x8, x1, x2, w3, w4, w5, x5, w6, x6, w7, x9, x10
.macro load_filter_row dst, src, inc
asr w13, \src, #10
ldr \dst, [x11, w13, sxtw #3]
add \src, \src, \inc
.endm
function warp_filter_horz_neon
add w12, w5, #512
ld1 {v16.8h, v17.8h}, [x2], x3
load_filter_row d0, w12, w7
load_filter_row d1, w12, w7
load_filter_row d2, w12, w7
sxtl v0.8h, v0.8b
load_filter_row d3, w12, w7
sxtl v1.8h, v1.8b
load_filter_row d4, w12, w7
sxtl v2.8h, v2.8b
load_filter_row d5, w12, w7
sxtl v3.8h, v3.8b
load_filter_row d6, w12, w7
sxtl v4.8h, v4.8b
load_filter_row d7, w12, w7
sxtl v5.8h, v5.8b
ext v18.16b, v16.16b, v17.16b, #2*1
smull v8.4s, v16.4h, v0.4h
smull2 v9.4s, v16.8h, v0.8h
sxtl v6.8h, v6.8b
ext v19.16b, v16.16b, v17.16b, #2*2
smull v10.4s, v18.4h, v1.4h
smull2 v11.4s, v18.8h, v1.8h
sxtl v7.8h, v7.8b
ext v20.16b, v16.16b, v17.16b, #2*3
smull v0.4s, v19.4h, v2.4h
smull2 v1.4s, v19.8h, v2.8h
ext v21.16b, v16.16b, v17.16b, #2*4
addp v8.4s, v8.4s, v9.4s
smull v2.4s, v20.4h, v3.4h
smull2 v3.4s, v20.8h, v3.8h
ext v22.16b, v16.16b, v17.16b, #2*5
addp v9.4s, v10.4s, v11.4s
smull v10.4s, v21.4h, v4.4h
smull2 v11.4s, v21.8h, v4.8h
ext v23.16b, v16.16b, v17.16b, #2*6
addp v0.4s, v0.4s, v1.4s
smull v18.4s, v22.4h, v5.4h
smull2 v19.4s, v22.8h, v5.8h
ext v16.16b, v16.16b, v17.16b, #2*7
addp v1.4s, v2.4s, v3.4s
addp v2.4s, v10.4s, v11.4s
smull v20.4s, v23.4h, v6.4h
smull2 v21.4s, v23.8h, v6.8h
addp v3.4s, v18.4s, v19.4s
smull v22.4s, v16.4h, v7.4h
smull2 v23.4s, v16.8h, v7.8h
addp v4.4s, v20.4s, v21.4s
addp v5.4s, v22.4s, v23.4s
addp v8.4s, v8.4s, v9.4s
addp v0.4s, v0.4s, v1.4s
addp v2.4s, v2.4s, v3.4s
addp v4.4s, v4.4s, v5.4s
addp v16.4s, v8.4s, v0.4s
addp v17.4s, v2.4s, v4.4s
add w5, w5, w8
srshl v16.4s, v16.4s, v14.4s // -(7 - intermediate_bits)
srshl v17.4s, v17.4s, v14.4s // -(7 - intermediate_bits)
ret
endfunc
// void dav1d_warp_affine_8x8_16bpc_neon(
// pixel *dst, const ptrdiff_t dst_stride,
// const pixel *src, const ptrdiff_t src_stride,
// const int16_t *const abcd, int mx, int my,
// const int bitdepth_max)
.macro warp t
function warp_affine_8x8\t\()_16bpc_neon, export=1
stp d8, d9, [sp, #-0x40]!
stp d10, d11, [sp, #0x10]
stp d12, d13, [sp, #0x20]
stp d14, d15, [sp, #0x30]
.ifb \t
dup v15.8h, w7 // bitdepth_max
.else
movi v15.8h, #(PREP_BIAS >> 8), lsl #8
.endif
clz w7, w7
// intermediate_bits = clz(bitdepth_max) - 18
.ifb \t
sub w8, w7, #11 // 7 + intermediate_bits = clz(bitdepth_max) - 18 + 7
.endif
sub w7, w7, #25 // -(7 - intermediate_bits)
.ifb \t
neg w8, w8 // -(7 + intermediate_bits)
.endif
dup v14.4s, w7 // -(7 - intermediate_bits)
.ifb \t
dup v13.4s, w8 // -(7 + intermediate_bits)
.endif
ldr x4, [x4]
sbfx x7, x4, #0, #16
sbfx x8, x4, #16, #16
sbfx x9, x4, #32, #16
sbfx x4, x4, #48, #16
mov w10, #8
sub x2, x2, x3, lsl #1
sub x2, x2, x3
sub x2, x2, #6
movrel x11, X(mc_warp_filter), 64*8
mov x15, x30
.ifnb \t
lsl x1, x1, #1
.endif
bl warp_filter_horz_neon
xtn v24.4h, v16.4s
xtn2 v24.8h, v17.4s
bl warp_filter_horz_neon
xtn v25.4h, v16.4s
xtn2 v25.8h, v17.4s
bl warp_filter_horz_neon
xtn v26.4h, v16.4s
xtn2 v26.8h, v17.4s
bl warp_filter_horz_neon
xtn v27.4h, v16.4s
xtn2 v27.8h, v17.4s
bl warp_filter_horz_neon
xtn v28.4h, v16.4s
xtn2 v28.8h, v17.4s
bl warp_filter_horz_neon
xtn v29.4h, v16.4s
xtn2 v29.8h, v17.4s
bl warp_filter_horz_neon
xtn v30.4h, v16.4s
xtn2 v30.8h, v17.4s
1:
add w14, w6, #512
bl warp_filter_horz_neon
xtn v31.4h, v16.4s
xtn2 v31.8h, v17.4s
load_filter_row d0, w14, w9
load_filter_row d1, w14, w9
load_filter_row d2, w14, w9
load_filter_row d3, w14, w9
load_filter_row d4, w14, w9
load_filter_row d5, w14, w9
load_filter_row d6, w14, w9
load_filter_row d7, w14, w9
transpose_8x8b v0, v1, v2, v3, v4, v5, v6, v7, v16, v17
sxtl v0.8h, v0.8b
sxtl v1.8h, v1.8b
sxtl v2.8h, v2.8b
sxtl v3.8h, v3.8b
sxtl v4.8h, v4.8b
sxtl v5.8h, v5.8b
sxtl v6.8h, v6.8b
sxtl v7.8h, v7.8b
// This ordering of smull/smlal/smull2/smlal2 is highly
// beneficial for Cortex A53 here.
smull v16.4s, v24.4h, v0.4h
smlal v16.4s, v25.4h, v1.4h
smlal v16.4s, v26.4h, v2.4h
smlal v16.4s, v27.4h, v3.4h
smlal v16.4s, v28.4h, v4.4h
smlal v16.4s, v29.4h, v5.4h
smlal v16.4s, v30.4h, v6.4h
smlal v16.4s, v31.4h, v7.4h
smull2 v17.4s, v24.8h, v0.8h
smlal2 v17.4s, v25.8h, v1.8h
smlal2 v17.4s, v26.8h, v2.8h
smlal2 v17.4s, v27.8h, v3.8h
smlal2 v17.4s, v28.8h, v4.8h
smlal2 v17.4s, v29.8h, v5.8h
smlal2 v17.4s, v30.8h, v6.8h
smlal2 v17.4s, v31.8h, v7.8h
mov v24.16b, v25.16b
mov v25.16b, v26.16b
.ifb \t
srshl v16.4s, v16.4s, v13.4s // -(7 + intermediate_bits)
srshl v17.4s, v17.4s, v13.4s // -(7 + intermediate_bits)
.else
rshrn v16.4h, v16.4s, #7
rshrn2 v16.8h, v17.4s, #7
.endif
mov v26.16b, v27.16b
.ifb \t
sqxtun v16.4h, v16.4s
sqxtun2 v16.8h, v17.4s
.else
sub v16.8h, v16.8h, v15.8h // PREP_BIAS
.endif
mov v27.16b, v28.16b
mov v28.16b, v29.16b
.ifb \t
umin v16.8h, v16.8h, v15.8h // bitdepth_max
.endif
mov v29.16b, v30.16b
mov v30.16b, v31.16b
subs w10, w10, #1
st1 {v16.8h}, [x0], x1
add w6, w6, w4
b.gt 1b
ldp d14, d15, [sp, #0x30]
ldp d12, d13, [sp, #0x20]
ldp d10, d11, [sp, #0x10]
ldp d8, d9, [sp], 0x40
br x15
endfunc
.endm
warp
warp t