ref: 6a6c3528925e623891c8404afdf43c0d63815709
dir: /src/arm/64/mc.S/
/*
* Copyright © 2018, VideoLAN and dav1d authors
* Copyright © 2018, Janne Grunau
* Copyright © 2018, 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"
.macro avg dst, t0, t1, t2, t3
ld1 {\t0\().8h,\t1\().8h}, [x2], 32
ld1 {\t2\().8h,\t3\().8h}, [x3], 32
add \t0\().8h, \t0\().8h, \t2\().8h
add \t1\().8h, \t1\().8h, \t3\().8h
sqrshrun \dst\().8b, \t0\().8h, #5
sqrshrun2 \dst\().16b, \t1\().8h, #5
.endm
.macro w_avg dst, t0, t1, t2, t3
ld1 {\t0\().8h,\t1\().8h}, [x2], 32
ld1 {\t2\().8h,\t3\().8h}, [x3], 32
sub \t0\().8h, \t2\().8h, \t0\().8h
sub \t1\().8h, \t3\().8h, \t1\().8h
sqdmulh \t0\().8h, \t0\().8h, v30.8h
sqdmulh \t1\().8h, \t1\().8h, v30.8h
add \t0\().8h, \t2\().8h, \t0\().8h
add \t1\().8h, \t3\().8h, \t1\().8h
sqrshrun \dst\().8b, \t0\().8h, #4
sqrshrun2 \dst\().16b, \t1\().8h, #4
.endm
.macro mask dst, t0, t1, t2, t3
ld1 {v30.16b}, [x6], 16
ld1 {\t0\().8h,\t1\().8h}, [x2], 32
mul v30.16b, v30.16b, v31.16b
ld1 {\t2\().8h,\t3\().8h}, [x3], 32
shll v28.8h, v30.8b, #8
shll2 v29.8h, v30.16b, #8
sub \t0\().8h, \t2\().8h, \t0\().8h
sub \t1\().8h, \t3\().8h, \t1\().8h
sqdmulh \t0\().8h, \t0\().8h, v28.8h
sqdmulh \t1\().8h, \t1\().8h, v29.8h
add \t0\().8h, \t2\().8h, \t0\().8h
add \t1\().8h, \t3\().8h, \t1\().8h
sqrshrun \dst\().8b, \t0\().8h, #4
sqrshrun2 \dst\().16b, \t1\().8h, #4
.endm
.macro bidir_fn type
function \type\()_8bpc_neon, export=1
clz w4, w4
.ifc \type, w_avg
dup v30.8h, w6
neg v30.8h, v30.8h
shl v30.8h, v30.8h, #11
.endif
.ifc \type, mask
movi v31.16b, #256-2
.endif
adr x7, L(\type\()_tbl)
sub w4, w4, #24
ldrh w4, [x7, x4, lsl #1]
\type v4, v0, v1, v2, v3
sub x7, x7, w4, uxtw
br x7
40:
add x7, x0, x1
lsl x1, x1, #1
4:
cmp w5, #4
st1 {v4.s}[0], [x0], x1
st1 {v4.s}[1], [x7], x1
st1 {v4.s}[2], [x0], x1
st1 {v4.s}[3], [x7], x1
b.eq 0f
\type v5, v0, v1, v2, v3
cmp w5, #8
st1 {v5.s}[0], [x0], x1
st1 {v5.s}[1], [x7], x1
st1 {v5.s}[2], [x0], x1
st1 {v5.s}[3], [x7], x1
b.eq 0f
\type v4, v0, v1, v2, v3
st1 {v4.s}[0], [x0], x1
st1 {v4.s}[1], [x7], x1
\type v5, v0, v1, v2, v3
st1 {v4.s}[2], [x0], x1
st1 {v4.s}[3], [x7], x1
st1 {v5.s}[0], [x0], x1
st1 {v5.s}[1], [x7], x1
st1 {v5.s}[2], [x0], x1
st1 {v5.s}[3], [x7], x1
ret
80:
add x7, x0, x1
lsl x1, x1, #1
8:
st1 {v4.d}[0], [x0], x1
\type v5, v0, v1, v2, v3
st1 {v4.d}[1], [x7], x1
st1 {v5.d}[0], [x0], x1
subs w5, w5, #4
st1 {v5.d}[1], [x7], x1
b.le 0f
\type v4, v0, v1, v2, v3
b 8b
16:
\type v5, v0, v1, v2, v3
st1 {v4.16b}, [x0], x1
\type v6, v0, v1, v2, v3
st1 {v5.16b}, [x0], x1
\type v7, v0, v1, v2, v3
st1 {v6.16b}, [x0], x1
subs w5, w5, #4
st1 {v7.16b}, [x0], x1
b.le 0f
\type v4, v0, v1, v2, v3
b 16b
320:
add x7, x0, x1
lsl x1, x1, #1
32:
\type v5, v0, v1, v2, v3
\type v6, v0, v1, v2, v3
st1 {v4.16b,v5.16b}, [x0], x1
\type v7, v0, v1, v2, v3
subs w5, w5, #2
st1 {v6.16b,v7.16b}, [x7], x1
b.le 0f
\type v4, v0, v1, v2, v3
b 32b
640:
add x7, x0, x1
lsl x1, x1, #1
64:
\type v5, v0, v1, v2, v3
\type v6, v0, v1, v2, v3
\type v7, v0, v1, v2, v3
\type v16, v0, v1, v2, v3
\type v17, v0, v1, v2, v3
st1 {v4.16b,v5.16b,v6.16b,v7.16b}, [x0], x1
\type v18, v0, v1, v2, v3
\type v19, v0, v1, v2, v3
subs w5, w5, #2
st1 {v16.16b,v17.16b,v18.16b,v19.16b}, [x7], x1
b.le 0f
\type v4, v0, v1, v2, v3
b 64b
1280:
add x7, x0, #64
128:
\type v5, v0, v1, v2, v3
\type v6, v0, v1, v2, v3
\type v7, v0, v1, v2, v3
\type v16, v0, v1, v2, v3
\type v17, v0, v1, v2, v3
st1 {v4.16b,v5.16b,v6.16b,v7.16b}, [x0], x1
\type v18, v0, v1, v2, v3
\type v19, v0, v1, v2, v3
subs w5, w5, #1
st1 {v16.16b,v17.16b,v18.16b,v19.16b}, [x7], x1
b.le 0f
\type v4, 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) - 320b
.hword L(\type\()_tbl) - 16b
.hword L(\type\()_tbl) - 80b
.hword L(\type\()_tbl) - 40b
endfunc
.endm
bidir_fn avg
bidir_fn w_avg
bidir_fn mask
.macro w_mask_fn type
function w_mask_\type\()_8bpc_neon, export=1
clz w8, w4
adr x9, L(w_mask_\type\()_tbl)
sub w8, w8, #24
ldrh w8, [x9, x8, lsl #1]
sub x9, x9, w8, uxtw
mov w10, #6903
dup v0.8h, w10
.if \type == 444
movi v1.16b, #64
.elseif \type == 422
dup v2.8b, w7
movi v3.8b, #129
sub v3.8b, v3.8b, v2.8b
.elseif \type == 420
dup v2.8h, w7
movi v3.8h, #1, lsl #8
sub v3.8h, v3.8h, v2.8h
.endif
add x12, x0, x1
lsl x1, x1, #1
br x9
4:
ld1 {v4.8h, v5.8h}, [x2], #32 // tmp1 (four rows at once)
ld1 {v6.8h, v7.8h}, [x3], #32 // tmp2 (four rows at once)
subs w5, w5, #4
sub v16.8h, v6.8h, v4.8h
sub v17.8h, v7.8h, v5.8h
sabd v18.8h, v4.8h, v6.8h
sabd v19.8h, v5.8h, v7.8h
uqsub v18.8h, v0.8h, v18.8h
uqsub v19.8h, v0.8h, v19.8h
ushr v18.8h, v18.8h, #8
ushr v19.8h, v19.8h, #8
shl v20.8h, v18.8h, #9
shl v21.8h, v19.8h, #9
sqdmulh v20.8h, v20.8h, v16.8h
sqdmulh v21.8h, v21.8h, v17.8h
add v20.8h, v20.8h, v4.8h
add v21.8h, v21.8h, v5.8h
sqrshrun v22.8b, v20.8h, #4
sqrshrun v23.8b, v21.8h, #4
.if \type == 444
xtn v18.8b, v18.8h
xtn2 v18.16b, v19.8h
sub v18.16b, v1.16b, v18.16b
st1 {v18.16b}, [x6], #16
.elseif \type == 422
addp v18.8h, v18.8h, v19.8h
xtn v18.8b, v18.8h
uhsub v18.8b, v3.8b, v18.8b
st1 {v18.8b}, [x6], #8
.elseif \type == 420
trn1 v24.2d, v18.2d, v19.2d
trn2 v25.2d, v18.2d, v19.2d
add v24.8h, v24.8h, v25.8h
addp v18.8h, v24.8h, v24.8h
sub v18.4h, v3.4h, v18.4h
rshrn v18.8b, v18.8h, #2
st1 {v18.s}[0], [x6], #4
.endif
st1 {v22.s}[0], [x0], x1
st1 {v22.s}[1], [x12], x1
st1 {v23.s}[0], [x0], x1
st1 {v23.s}[1], [x12], x1
b.gt 4b
ret
8:
ld1 {v4.8h, v5.8h}, [x2], #32
ld1 {v6.8h, v7.8h}, [x3], #32
subs w5, w5, #2
sub v16.8h, v6.8h, v4.8h
sub v17.8h, v7.8h, v5.8h
sabd v18.8h, v4.8h, v6.8h
sabd v19.8h, v5.8h, v7.8h
uqsub v18.8h, v0.8h, v18.8h
uqsub v19.8h, v0.8h, v19.8h
ushr v18.8h, v18.8h, #8
ushr v19.8h, v19.8h, #8
shl v20.8h, v18.8h, #9
shl v21.8h, v19.8h, #9
sqdmulh v20.8h, v20.8h, v16.8h
sqdmulh v21.8h, v21.8h, v17.8h
add v20.8h, v20.8h, v4.8h
add v21.8h, v21.8h, v5.8h
sqrshrun v22.8b, v20.8h, #4
sqrshrun v23.8b, v21.8h, #4
.if \type == 444
xtn v18.8b, v18.8h
xtn2 v18.16b, v19.8h
sub v18.16b, v1.16b, v18.16b
st1 {v18.16b}, [x6], #16
.elseif \type == 422
addp v18.8h, v18.8h, v19.8h
xtn v18.8b, v18.8h
uhsub v18.8b, v3.8b, v18.8b
st1 {v18.8b}, [x6], #8
.elseif \type == 420
add v18.8h, v18.8h, v19.8h
addp v18.8h, v18.8h, v18.8h
sub v18.4h, v3.4h, v18.4h
rshrn v18.8b, v18.8h, #2
st1 {v18.s}[0], [x6], #4
.endif
st1 {v22.8b}, [x0], x1
st1 {v23.8b}, [x12], x1
b.gt 8b
ret
1280:
640:
320:
160:
mov w11, w4
sub x1, x1, w4, uxtw
.if \type == 444
add x10, x6, w4, uxtw
.elseif \type == 422
add x10, x6, x11, lsr #1
.endif
add x9, x3, w4, uxtw #1
add x7, x2, w4, uxtw #1
161:
mov w8, w4
16:
ld1 {v4.8h, v5.8h}, [x2], #32
ld1 {v6.8h, v7.8h}, [x3], #32
ld1 {v16.8h, v17.8h}, [x7], #32
ld1 {v18.8h, v19.8h}, [x9], #32
subs w8, w8, #16
sub v6.8h, v6.8h, v4.8h
sub v7.8h, v7.8h, v5.8h
sub v18.8h, v18.8h, v16.8h
sub v19.8h, v19.8h, v17.8h
abs v20.8h, v6.8h
abs v21.8h, v7.8h
abs v22.8h, v18.8h
abs v23.8h, v19.8h
uqsub v20.8h, v0.8h, v20.8h
uqsub v21.8h, v0.8h, v21.8h
uqsub v22.8h, v0.8h, v22.8h
uqsub v23.8h, v0.8h, v23.8h
ushr v20.8h, v20.8h, #8
ushr v21.8h, v21.8h, #8
ushr v22.8h, v22.8h, #8
ushr v23.8h, v23.8h, #8
shl v24.8h, v20.8h, #9
shl v25.8h, v21.8h, #9
shl v26.8h, v22.8h, #9
shl v27.8h, v23.8h, #9
sqdmulh v24.8h, v24.8h, v6.8h
sqdmulh v25.8h, v25.8h, v7.8h
sqdmulh v26.8h, v26.8h, v18.8h
sqdmulh v27.8h, v27.8h, v19.8h
add v24.8h, v24.8h, v4.8h
add v25.8h, v25.8h, v5.8h
add v26.8h, v26.8h, v16.8h
add v27.8h, v27.8h, v17.8h
sqrshrun v24.8b, v24.8h, #4
sqrshrun v25.8b, v25.8h, #4
sqrshrun v26.8b, v26.8h, #4
sqrshrun v27.8b, v27.8h, #4
.if \type == 444
xtn v20.8b, v20.8h
xtn2 v20.16b, v21.8h
xtn v21.8b, v22.8h
xtn2 v21.16b, v23.8h
sub v20.16b, v1.16b, v20.16b
sub v21.16b, v1.16b, v21.16b
st1 {v20.16b}, [x6], #16
st1 {v21.16b}, [x10], #16
.elseif \type == 422
addp v20.8h, v20.8h, v21.8h
addp v21.8h, v22.8h, v23.8h
xtn v20.8b, v20.8h
xtn v21.8b, v21.8h
uhsub v20.8b, v3.8b, v20.8b
uhsub v21.8b, v3.8b, v21.8b
st1 {v20.8b}, [x6], #8
st1 {v21.8b}, [x10], #8
.elseif \type == 420
add v20.8h, v20.8h, v22.8h
add v21.8h, v21.8h, v23.8h
addp v20.8h, v20.8h, v21.8h
sub v20.8h, v3.8h, v20.8h
rshrn v20.8b, v20.8h, #2
st1 {v20.8b}, [x6], #8
.endif
st1 {v24.8b, v25.8b}, [x0], #16
st1 {v26.8b, v27.8b}, [x12], #16
b.gt 16b
subs w5, w5, #2
add x2, x2, w4, uxtw #1
add x3, x3, w4, uxtw #1
add x7, x7, w4, uxtw #1
add x9, x9, w4, uxtw #1
.if \type == 444
add x6, x6, w4, uxtw
add x10, x10, w4, uxtw
.elseif \type == 422
add x6, x6, x11, lsr #1
add x10, x10, x11, lsr #1
.endif
add x0, x0, x1
add x12, x12, x1
b.gt 161b
ret
L(w_mask_\type\()_tbl):
.hword L(w_mask_\type\()_tbl) - 1280b
.hword L(w_mask_\type\()_tbl) - 640b
.hword L(w_mask_\type\()_tbl) - 320b
.hword L(w_mask_\type\()_tbl) - 160b
.hword L(w_mask_\type\()_tbl) - 8b
.hword L(w_mask_\type\()_tbl) - 4b
endfunc
.endm
w_mask_fn 444
w_mask_fn 422
w_mask_fn 420
function blend_8bpc_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
movi v4.16b, #64
add x8, x0, x1
lsl x1, x1, #1
br x6
4:
ld1 {v2.8b}, [x5], #8
ld1 {v1.d}[0], [x2], #8
ld1 {v0.s}[0], [x0]
subs w4, w4, #2
ld1 {v0.s}[1], [x8]
sub v3.8b, v4.8b, v2.8b
umull v5.8h, v1.8b, v2.8b
umlal v5.8h, v0.8b, v3.8b
rshrn v6.8b, v5.8h, #6
st1 {v6.s}[0], [x0], x1
st1 {v6.s}[1], [x8], x1
b.gt 4b
ret
8:
ld1 {v2.16b}, [x5], #16
ld1 {v1.16b}, [x2], #16
ld1 {v0.d}[0], [x0]
ld1 {v0.d}[1], [x8]
sub v3.16b, v4.16b, v2.16b
subs w4, w4, #2
umull v5.8h, v1.8b, v2.8b
umlal v5.8h, v0.8b, v3.8b
umull2 v6.8h, v1.16b, v2.16b
umlal2 v6.8h, v0.16b, v3.16b
rshrn v7.8b, v5.8h, #6
rshrn2 v7.16b, v6.8h, #6
st1 {v7.d}[0], [x0], x1
st1 {v7.d}[1], [x8], x1
b.gt 8b
ret
16:
ld1 {v1.16b, v2.16b}, [x5], #32
ld1 {v5.16b, v6.16b}, [x2], #32
ld1 {v0.16b}, [x0]
subs w4, w4, #2
sub v7.16b, v4.16b, v1.16b
sub v20.16b, v4.16b, v2.16b
ld1 {v3.16b}, [x8]
umull v16.8h, v5.8b, v1.8b
umlal v16.8h, v0.8b, v7.8b
umull2 v17.8h, v5.16b, v1.16b
umlal2 v17.8h, v0.16b, v7.16b
umull v21.8h, v6.8b, v2.8b
umlal v21.8h, v3.8b, v20.8b
umull2 v22.8h, v6.16b, v2.16b
umlal2 v22.8h, v3.16b, v20.16b
rshrn v18.8b, v16.8h, #6
rshrn2 v18.16b, v17.8h, #6
rshrn v19.8b, v21.8h, #6
rshrn2 v19.16b, v22.8h, #6
st1 {v18.16b}, [x0], x1
st1 {v19.16b}, [x8], x1
b.gt 16b
ret
32:
ld1 {v0.16b, v1.16b, v2.16b, v3.16b}, [x5], #64
ld1 {v16.16b, v17.16b, v18.16b, v19.16b}, [x2], #64
ld1 {v20.16b, v21.16b}, [x0]
subs w4, w4, #2
ld1 {v22.16b, v23.16b}, [x8]
sub v5.16b, v4.16b, v0.16b
sub v6.16b, v4.16b, v1.16b
sub v30.16b, v4.16b, v2.16b
sub v31.16b, v4.16b, v3.16b
umull v24.8h, v16.8b, v0.8b
umlal v24.8h, v20.8b, v5.8b
umull2 v26.8h, v16.16b, v0.16b
umlal2 v26.8h, v20.16b, v5.16b
umull v28.8h, v17.8b, v1.8b
umlal v28.8h, v21.8b, v6.8b
umull2 v7.8h, v17.16b, v1.16b
umlal2 v7.8h, v21.16b, v6.16b
umull v27.8h, v18.8b, v2.8b
umlal v27.8h, v22.8b, v30.8b
umull2 v1.8h, v18.16b, v2.16b
umlal2 v1.8h, v22.16b, v30.16b
umull v29.8h, v19.8b, v3.8b
umlal v29.8h, v23.8b, v31.8b
umull2 v21.8h, v19.16b, v3.16b
umlal2 v21.8h, v23.16b, v31.16b
rshrn v24.8b, v24.8h, #6
rshrn2 v24.16b, v26.8h, #6
rshrn v25.8b, v28.8h, #6
rshrn2 v25.16b, v7.8h, #6
rshrn v27.8b, v27.8h, #6
rshrn2 v27.16b, v1.8h, #6
rshrn v28.8b, v29.8h, #6
rshrn2 v28.16b, v21.8h, #6
st1 {v24.16b, v25.16b}, [x0], x1
st1 {v27.16b, v28.16b}, [x8], x1
b.gt 32b
ret
L(blend_tbl):
.hword L(blend_tbl) - 32b
.hword L(blend_tbl) - 16b
.hword L(blend_tbl) - 8b
.hword L(blend_tbl) - 4b
endfunc
function blend_h_8bpc_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
movi v4.16b, #64
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:
ld1 {v0.h}[0], [x5], #2
ld1 {v1.s}[0], [x2], #4
subs w4, w4, #2
ld1 {v2.h}[0], [x0]
zip1 v0.8b, v0.8b, v0.8b
sub v3.8b, v4.8b, v0.8b
ld1 {v2.h}[1], [x8]
umull v5.8h, v1.8b, v0.8b
umlal v5.8h, v2.8b, v3.8b
rshrn v5.8b, v5.8h, #6
st1 {v5.h}[0], [x0], x1
st1 {v5.h}[1], [x8], x1
b.gt 2b
ret
4:
ld2r {v0.8b, v1.8b}, [x5], #2
ld1 {v2.8b}, [x2], #8
subs w4, w4, #2
ext v0.8b, v0.8b, v1.8b, #4
ld1 {v3.s}[0], [x0]
sub v5.8b, v4.8b, v0.8b
ld1 {v3.s}[1], [x8]
umull v6.8h, v2.8b, v0.8b
umlal v6.8h, v3.8b, v5.8b
rshrn v6.8b, v6.8h, #6
st1 {v6.s}[0], [x0], x1
st1 {v6.s}[1], [x8], x1
b.gt 4b
ret
8:
ld2r {v0.16b, v1.16b}, [x5], #2
ld1 {v2.16b}, [x2], #16
ld1 {v3.d}[0], [x0]
ext v0.16b, v0.16b, v1.16b, #8
sub v5.16b, v4.16b, v0.16b
ld1 {v3.d}[1], [x8]
subs w4, w4, #2
umull v6.8h, v0.8b, v2.8b
umlal v6.8h, v3.8b, v5.8b
umull2 v7.8h, v0.16b, v2.16b
umlal2 v7.8h, v3.16b, v5.16b
rshrn v16.8b, v6.8h, #6
rshrn2 v16.16b, v7.8h, #6
st1 {v16.d}[0], [x0], x1
st1 {v16.d}[1], [x8], x1
b.gt 8b
ret
16:
ld2r {v0.16b, v1.16b}, [x5], #2
ld1 {v2.16b, v3.16b}, [x2], #32
ld1 {v5.16b}, [x0]
sub v7.16b, v4.16b, v0.16b
sub v16.16b, v4.16b, v1.16b
ld1 {v6.16b}, [x8]
subs w4, w4, #2
umull v17.8h, v0.8b, v2.8b
umlal v17.8h, v5.8b, v7.8b
umull2 v18.8h, v0.16b, v2.16b
umlal2 v18.8h, v5.16b, v7.16b
umull v19.8h, v1.8b, v3.8b
umlal v19.8h, v6.8b, v16.8b
umull2 v20.8h, v1.16b, v3.16b
umlal2 v20.8h, v6.16b, v16.16b
rshrn v21.8b, v17.8h, #6
rshrn2 v21.16b, v18.8h, #6
rshrn v22.8b, v19.8h, #6
rshrn2 v22.16b, v20.8h, #6
st1 {v21.16b}, [x0], x1
st1 {v22.16b}, [x8], x1
b.gt 16b
ret
1280:
640:
320:
sub x1, x1, w3, uxtw
add x7, x2, w3, uxtw
321:
ld2r {v0.16b, v1.16b}, [x5], #2
mov w6, w3
sub v20.16b, v4.16b, v0.16b
sub v21.16b, v4.16b, v1.16b
32:
ld1 {v16.16b, v17.16b}, [x2], #32
ld1 {v2.16b, v3.16b}, [x0]
subs w6, w6, #32
umull v23.8h, v0.8b, v16.8b
umlal v23.8h, v2.8b, v20.8b
ld1 {v18.16b, v19.16b}, [x7], #32
umull2 v27.8h, v0.16b, v16.16b
umlal2 v27.8h, v2.16b, v20.16b
ld1 {v6.16b, v7.16b}, [x8]
umull v24.8h, v0.8b, v17.8b
umlal v24.8h, v3.8b, v20.8b
umull2 v28.8h, v0.16b, v17.16b
umlal2 v28.8h, v3.16b, v20.16b
umull v25.8h, v1.8b, v18.8b
umlal v25.8h, v6.8b, v21.8b
umull2 v5.8h, v1.16b, v18.16b
umlal2 v5.8h, v6.16b, v21.16b
rshrn v29.8b, v23.8h, #6
rshrn2 v29.16b, v27.8h, #6
umull v26.8h, v1.8b, v19.8b
umlal v26.8h, v7.8b, v21.8b
umull2 v31.8h, v1.16b, v19.16b
umlal2 v31.8h, v7.16b, v21.16b
rshrn v30.8b, v24.8h, #6
rshrn2 v30.16b, v28.8h, #6
rshrn v23.8b, v25.8h, #6
rshrn2 v23.16b, v5.8h, #6
rshrn v24.8b, v26.8h, #6
st1 {v29.16b, v30.16b}, [x0], #32
rshrn2 v24.16b, v31.8h, #6
st1 {v23.16b, v24.16b}, [x8], #32
b.gt 32b
subs w4, w4, #2
add x0, x0, x1
add x8, x8, x1
add x2, x2, w3, uxtw
add x7, x7, w3, uxtw
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_8bpc_neon, export=1
adr x6, L(blend_v_tbl)
movrel x5, X(obmc_masks)
add x5, x5, w3, uxtw
clz w3, w3
movi v4.16b, #64
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 {v0.8b}, [x5]
sub v1.8b, v4.8b, v0.8b
2:
ld1 {v2.h}[0], [x2], #2
ld1 {v3.b}[0], [x0]
subs w4, w4, #2
ld1 {v2.b}[1], [x2]
ld1 {v3.b}[1], [x8]
umull v5.8h, v2.8b, v0.8b
umlal v5.8h, v3.8b, v1.8b
rshrn v5.8b, v5.8h, #6
add x2, x2, #2
st1 {v5.b}[0], [x0], x1
st1 {v5.b}[1], [x8], x1
b.gt 2b
ret
40:
ld1r {v0.2s}, [x5]
sub x1, x1, #2
sub v1.8b, v4.8b, v0.8b
4:
ld1 {v2.8b}, [x2], #8
ld1 {v3.s}[0], [x0]
ld1 {v3.s}[1], [x8]
subs w4, w4, #2
umull v5.8h, v2.8b, v0.8b
umlal v5.8h, v3.8b, v1.8b
rshrn v5.8b, v5.8h, #6
st1 {v5.h}[0], [x0], #2
st1 {v5.h}[2], [x8], #2
st1 {v5.b}[2], [x0], x1
st1 {v5.b}[6], [x8], x1
b.gt 4b
ret
80:
ld1r {v0.2d}, [x5]
sub x1, x1, #4
sub v1.16b, v4.16b, v0.16b
8:
ld1 {v2.16b}, [x2], #16
ld1 {v3.d}[0], [x0]
ld1 {v3.d}[1], [x8]
subs w4, w4, #2
umull v5.8h, v0.8b, v2.8b
umlal v5.8h, v3.8b, v1.8b
umull2 v6.8h, v0.16b, v2.16b
umlal2 v6.8h, v3.16b, v1.16b
rshrn v7.8b, v5.8h, #6
rshrn2 v7.16b, v6.8h, #6
st1 {v7.s}[0], [x0], #4
st1 {v7.s}[2], [x8], #4
st1 {v7.h}[2], [x0], x1
st1 {v7.h}[6], [x8], x1
b.gt 8b
ret
160:
ld1 {v0.16b}, [x5]
sub x1, x1, #8
sub v2.16b, v4.16b, v0.16b
16:
ld1 {v5.16b, v6.16b}, [x2], #32
ld1 {v7.16b}, [x0]
subs w4, w4, #2
ld1 {v16.16b}, [x8]
umull v17.8h, v5.8b, v0.8b
umlal v17.8h, v7.8b, v2.8b
umull2 v18.8h, v5.16b, v0.16b
umlal2 v18.8h, v7.16b, v2.16b
umull v20.8h, v6.8b, v0.8b
umlal v20.8h, v16.8b, v2.8b
umull2 v21.8h, v6.16b, v0.16b
umlal2 v21.8h, v16.16b, v2.16b
rshrn v19.8b, v17.8h, #6
rshrn2 v19.16b, v18.8h, #6
rshrn v22.8b, v20.8h, #6
rshrn2 v22.16b, v21.8h, #6
st1 {v19.8b}, [x0], #8
st1 {v22.8b}, [x8], #8
st1 {v19.s}[2], [x0], x1
st1 {v22.s}[2], [x8], x1
b.gt 16b
ret
320:
ld1 {v0.16b, v1.16b}, [x5]
sub x1, x1, #16
sub v2.16b, v4.16b, v0.16b
sub v3.8b, v4.8b, v1.8b
32:
ld1 {v16.16b, v17.16b, v18.16b, v19.16b}, [x2], #64
ld1 {v5.16b, v6.16b}, [x0]
subs w4, w4, #2
ld1 {v20.16b, v21.16b}, [x8]
umull v22.8h, v16.8b, v0.8b
umlal v22.8h, v5.8b, v2.8b
umull2 v23.8h, v16.16b, v0.16b
umlal2 v23.8h, v5.16b, v2.16b
umull v28.8h, v17.8b, v1.8b
umlal v28.8h, v6.8b, v3.8b
umull v30.8h, v18.8b, v0.8b
umlal v30.8h, v20.8b, v2.8b
umull2 v31.8h, v18.16b, v0.16b
umlal2 v31.8h, v20.16b, v2.16b
umull v25.8h, v19.8b, v1.8b
umlal v25.8h, v21.8b, v3.8b
rshrn v24.8b, v22.8h, #6
rshrn2 v24.16b, v23.8h, #6
rshrn v28.8b, v28.8h, #6
rshrn v30.8b, v30.8h, #6
rshrn2 v30.16b, v31.8h, #6
rshrn v27.8b, v25.8h, #6
st1 {v24.16b}, [x0], #16
st1 {v30.16b}, [x8], #16
st1 {v28.8b}, [x0], x1
st1 {v27.8b}, [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 x8 is set to (clz(w)-24).
function put_neon
adr x9, L(put_tbl)
ldrh w8, [x9, x8, lsl #1]
sub x9, x9, w8, uxtw
br x9
2:
ld1 {v0.h}[0], [x2], x3
ld1 {v1.h}[0], [x2], x3
subs w5, w5, #2
st1 {v0.h}[0], [x0], x1
st1 {v1.h}[0], [x0], x1
b.gt 2b
ret
4:
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 4b
ret
8:
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 8b
ret
160:
add x8, x0, x1
lsl x1, x1, #1
add x9, x2, x3
lsl x3, x3, #1
16:
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 16b
ret
32:
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 32b
ret
64:
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 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]
stp q6, q7, [x0, #96]
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) - 160b
.hword L(put_tbl) - 8b
.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 x8 is set to (clz(w)-24), and x7 to w*2.
function prep_neon
adr x9, L(prep_tbl)
ldrh w8, [x9, x8, lsl #1]
sub x9, x9, w8, uxtw
br x9
4:
ld1 {v0.s}[0], [x1], x2
ld1 {v1.s}[0], [x1], x2
subs w4, w4, #2
ushll v0.8h, v0.8b, #4
ushll v1.8h, v1.8b, #4
st1 {v0.4h, v1.4h}, [x0], #16
b.gt 4b
ret
8:
ld1 {v0.8b}, [x1], x2
ld1 {v1.8b}, [x1], x2
subs w4, w4, #2
ushll v0.8h, v0.8b, #4
ushll v1.8h, v1.8b, #4
st1 {v0.8h, v1.8h}, [x0], #32
b.gt 8b
ret
160:
add x9, x1, x2
lsl x2, x2, #1
16:
ld1 {v0.16b}, [x1], x2
ld1 {v1.16b}, [x9], x2
subs w4, w4, #2
ushll v4.8h, v0.8b, #4
ushll2 v5.8h, v0.16b, #4
ushll v6.8h, v1.8b, #4
ushll2 v7.8h, v1.16b, #4
st1 {v4.8h, v5.8h, v6.8h, v7.8h}, [x0], #64
b.gt 16b
ret
320:
add x8, x0, w3, uxtw
32:
ld1 {v0.16b, v1.16b}, [x1], x2
subs w4, w4, #2
ushll v4.8h, v0.8b, #4
ushll2 v5.8h, v0.16b, #4
ld1 {v2.16b, v3.16b}, [x1], x2
ushll v6.8h, v1.8b, #4
ushll2 v7.8h, v1.16b, #4
ushll v16.8h, v2.8b, #4
st1 {v4.8h, v5.8h}, [x0], x7
ushll2 v17.8h, v2.16b, #4
st1 {v6.8h, v7.8h}, [x8], x7
ushll v18.8h, v3.8b, #4
st1 {v16.8h, v17.8h}, [x0], x7
ushll2 v19.8h, v3.16b, #4
st1 {v18.8h, v19.8h}, [x8], x7
b.gt 32b
ret
640:
add x8, x0, #32
mov x6, #64
64:
ldp q0, q1, [x1]
subs w4, w4, #1
ushll v4.8h, v0.8b, #4
ushll2 v5.8h, v0.16b, #4
ldp q2, q3, [x1, #32]
ushll v6.8h, v1.8b, #4
ushll2 v7.8h, v1.16b, #4
add x1, x1, x2
ushll v16.8h, v2.8b, #4
st1 {v4.8h, v5.8h}, [x0], x6
ushll2 v17.8h, v2.16b, #4
ushll v18.8h, v3.8b, #4
st1 {v6.8h, v7.8h}, [x8], x6
ushll2 v19.8h, v3.16b, #4
st1 {v16.8h, v17.8h}, [x0], x6
st1 {v18.8h, v19.8h}, [x8], x6
b.gt 64b
ret
1280:
add x8, x0, #64
mov x6, #128
128:
ldp q0, q1, [x1]
ldp q2, q3, [x1, #32]
ushll v16.8h, v0.8b, #4
ushll2 v17.8h, v0.16b, #4
ushll v18.8h, v1.8b, #4
ushll2 v19.8h, v1.16b, #4
ushll v20.8h, v2.8b, #4
ushll2 v21.8h, v2.16b, #4
ldp q4, q5, [x1, #64]
st1 {v16.8h, v17.8h, v18.8h, v19.8h}, [x0], x6
ushll v22.8h, v3.8b, #4
ushll2 v23.8h, v3.16b, #4
ushll v24.8h, v4.8b, #4
ushll2 v25.8h, v4.16b, #4
ushll v26.8h, v5.8b, #4
ushll2 v27.8h, v5.16b, #4
ldp q6, q7, [x1, #96]
st1 {v20.8h, v21.8h, v22.8h, v23.8h}, [x8], x6
ushll v28.8h, v6.8b, #4
ushll2 v29.8h, v6.16b, #4
ushll v30.8h, v7.8b, #4
ushll2 v31.8h, v7.16b, #4
subs w4, w4, #1
add x1, x1, x2
st1 {v24.8h, v25.8h, v26.8h, v27.8h}, [x0], x6
st1 {v28.8h, v29.8h, v30.8h, v31.8h}, [x8], x6
b.gt 128b
ret
L(prep_tbl):
.hword L(prep_tbl) - 1280b
.hword L(prep_tbl) - 640b
.hword L(prep_tbl) - 320b
.hword L(prep_tbl) - 160b
.hword L(prep_tbl) - 8b
.hword L(prep_tbl) - 4b
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_h s0, s1, strd, d0, d1, d2, d3, d4, d5, d6
load_slice \s0, \s1, \strd, .h, \d0, \d1, \d2, \d3, \d4, \d5, \d6
.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_8b s0, s1, strd, d0, d1, d2, d3, d4, d5, d6
load_reg \s0, \s1, \strd, .8b, \d0, \d1, \d2, \d3, \d4, \d5, \d6
.endm
.macro load_16b s0, s1, strd, d0, d1, d2, d3, d4, d5, d6
load_reg \s0, \s1, \strd, .16b, \d0, \d1, \d2, \d3, \d4, \d5, \d6
.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_h r0, r1, r2, r3, r4
interleave_1 .4h, \r0, \r1, \r2, \r3, \r4
.endm
.macro interleave_1_s r0, r1, r2, r3, r4
interleave_1 .2s, \r0, \r1, \r2, \r3, \r4
.endm
.macro interleave_2 wd, r0, r1, r2, r3, r4, r5
trn1 \r0\wd, \r0\wd, \r2\wd
trn1 \r1\wd, \r1\wd, \r3\wd
trn1 \r2\wd, \r2\wd, \r4\wd
trn1 \r3\wd, \r3\wd, \r5\wd
.endm
.macro interleave_2_s r0, r1, r2, r3, r4, r5
interleave_2 .2s, \r0, \r1, \r2, \r3, \r4, \r5
.endm
.macro uxtl_b r0, r1, r2, r3, r4, r5, r6
uxtl \r0\().8h, \r0\().8b
uxtl \r1\().8h, \r1\().8b
.ifnb \r2
uxtl \r2\().8h, \r2\().8b
uxtl \r3\().8h, \r3\().8b
.endif
.ifnb \r4
uxtl \r4\().8h, \r4\().8b
.endif
.ifnb \r5
uxtl \r5\().8h, \r5\().8b
.endif
.ifnb \r6
uxtl \r6\().8h, \r6\().8b
.endif
.endm
.macro mul_mla_4 d, s0, s1, s2, s3, wd
mul \d\wd, \s0\wd, v0.h[0]
mla \d\wd, \s1\wd, v0.h[1]
mla \d\wd, \s2\wd, v0.h[2]
mla \d\wd, \s3\wd, v0.h[3]
.endm
// Interleaving the mul/mla chains actually hurts performance
// significantly on Cortex A53, thus keeping mul/mla tightly
// chained like this.
.macro mul_mla_8_1 d0, d1, s0, s1, s2, s3, s4, s5, s6, s7, s8
mul \d0\().8h, \s0\().8h, v0.h[0]
mla \d0\().8h, \s1\().8h, v0.h[1]
mla \d0\().8h, \s2\().8h, v0.h[2]
mla \d0\().8h, \s3\().8h, v0.h[3]
mla \d0\().8h, \s4\().8h, v0.h[4]
mla \d0\().8h, \s5\().8h, v0.h[5]
mla \d0\().8h, \s6\().8h, v0.h[6]
mla \d0\().8h, \s7\().8h, v0.h[7]
mul \d1\().8h, \s1\().8h, v0.h[0]
mla \d1\().8h, \s2\().8h, v0.h[1]
mla \d1\().8h, \s3\().8h, v0.h[2]
mla \d1\().8h, \s4\().8h, v0.h[3]
mla \d1\().8h, \s5\().8h, v0.h[4]
mla \d1\().8h, \s6\().8h, v0.h[5]
mla \d1\().8h, \s7\().8h, v0.h[6]
mla \d1\().8h, \s8\().8h, v0.h[7]
.endm
.macro mul_mla_8_2 d0, d1, s0, s1, s2, s3, s4, s5, s6, s7, s8, s9
mul \d0\().8h, \s0\().8h, v0.h[0]
mla \d0\().8h, \s1\().8h, v0.h[1]
mla \d0\().8h, \s2\().8h, v0.h[2]
mla \d0\().8h, \s3\().8h, v0.h[3]
mla \d0\().8h, \s4\().8h, v0.h[4]
mla \d0\().8h, \s5\().8h, v0.h[5]
mla \d0\().8h, \s6\().8h, v0.h[6]
mla \d0\().8h, \s7\().8h, v0.h[7]
mul \d1\().8h, \s2\().8h, v0.h[0]
mla \d1\().8h, \s3\().8h, v0.h[1]
mla \d1\().8h, \s4\().8h, v0.h[2]
mla \d1\().8h, \s5\().8h, v0.h[3]
mla \d1\().8h, \s6\().8h, v0.h[4]
mla \d1\().8h, \s7\().8h, v0.h[5]
mla \d1\().8h, \s8\().8h, v0.h[6]
mla \d1\().8h, \s9\().8h, v0.h[7]
.endm
.macro mul_mla_8_4 d0, d1, s0, s1, s2, s3, s4, s5, s6, s7, s8, s9, s10, s11
mul \d0\().8h, \s0\().8h, v0.h[0]
mla \d0\().8h, \s1\().8h, v0.h[1]
mla \d0\().8h, \s2\().8h, v0.h[2]
mla \d0\().8h, \s3\().8h, v0.h[3]
mla \d0\().8h, \s4\().8h, v0.h[4]
mla \d0\().8h, \s5\().8h, v0.h[5]
mla \d0\().8h, \s6\().8h, v0.h[6]
mla \d0\().8h, \s7\().8h, v0.h[7]
mul \d1\().8h, \s4\().8h, v0.h[0]
mla \d1\().8h, \s5\().8h, v0.h[1]
mla \d1\().8h, \s6\().8h, v0.h[2]
mla \d1\().8h, \s7\().8h, v0.h[3]
mla \d1\().8h, \s8\().8h, v0.h[4]
mla \d1\().8h, \s9\().8h, v0.h[5]
mla \d1\().8h, \s10\().8h, v0.h[6]
mla \d1\().8h, \s11\().8h, v0.h[7]
.endm
.macro sqrshrun_b shift, r0, r1, r2, r3
sqrshrun \r0\().8b, \r0\().8h, #\shift
.ifnb \r1
sqrshrun \r1\().8b, \r1\().8h, #\shift
.endif
.ifnb \r2
sqrshrun \r2\().8b, \r2\().8h, #\shift
sqrshrun \r3\().8b, \r3\().8h, #\shift
.endif
.endm
.macro srshr_h shift, r0, r1, r2, r3
srshr \r0\().8h, \r0\().8h, #\shift
.ifnb \r1
srshr \r1\().8h, \r1\().8h, #\shift
.endif
.ifnb \r2
srshr \r2\().8h, \r2\().8h, #\shift
srshr \r3\().8h, \r3\().8h, #\shift
.endif
.endm
.macro st_h strd, reg, lanes
st1 {\reg\().h}[0], [x0], \strd
st1 {\reg\().h}[1], [x8], \strd
.if \lanes > 2
st1 {\reg\().h}[2], [x0], \strd
st1 {\reg\().h}[3], [x8], \strd
.endif
.endm
.macro st_s strd, r0, r1
st1 {\r0\().s}[0], [x0], \strd
st1 {\r0\().s}[1], [x8], \strd
.ifnb \r1
st1 {\r1\().s}[0], [x0], \strd
st1 {\r1\().s}[1], [x8], \strd
.endif
.endm
.macro st_d strd, r0, r1
st1 {\r0\().d}[0], [x0], \strd
st1 {\r0\().d}[1], [x8], \strd
.ifnb \r1
st1 {\r1\().d}[0], [x0], \strd
st1 {\r1\().d}[1], [x8], \strd
.endif
.endm
.macro shift_store_4 type, strd, r0, r1
.ifc \type, put
sqrshrun_b 6, \r0, \r1
st_s \strd, \r0, \r1
.else
srshr_h 2, \r0, \r1
st_d \strd, \r0, \r1
.endif
.endm
.macro st_reg strd, wd, r0, r1, r2, r3, r4, r5, r6, r7
st1 {\r0\wd}, [x0], \strd
st1 {\r1\wd}, [x8], \strd
.ifnb \r2
st1 {\r2\wd}, [x0], \strd
st1 {\r3\wd}, [x8], \strd
.endif
.ifnb \r4
st1 {\r4\wd}, [x0], \strd
st1 {\r5\wd}, [x8], \strd
st1 {\r6\wd}, [x0], \strd
st1 {\r7\wd}, [x8], \strd
.endif
.endm
.macro st_8b strd, r0, r1, r2, r3, r4, r5, r6, r7
st_reg \strd, .8b, \r0, \r1, \r2, \r3, \r4, \r5, \r6, \r7
.endm
.macro st_16b strd, r0, r1, r2, r3, r4, r5, r6, r7
st_reg \strd, .16b, \r0, \r1, \r2, \r3, \r4, \r5, \r6, \r7
.endm
.macro shift_store_8 type, strd, r0, r1, r2, r3
.ifc \type, put
sqrshrun_b 6, \r0, \r1, \r2, \r3
st_8b \strd, \r0, \r1, \r2, \r3
.else
srshr_h 2, \r0, \r1, \r2, \r3
st_16b \strd, \r0, \r1, \r2, \r3
.endif
.endm
.macro shift_store_16 type, strd, r0, r1, r2, r3
.ifc \type, put
sqrshrun \r0\().8b, \r0\().8h, #6
sqrshrun2 \r0\().16b, \r1\().8h, #6
sqrshrun \r2\().8b, \r2\().8h, #6
sqrshrun2 \r2\().16b, \r3\().8h, #6
st_16b \strd, \r0, \r2
.else
srshr_h 2, \r0, \r1, \r2, \r3
st1 {\r0\().8h, \r1\().8h}, [x0], \strd
st1 {\r2\().8h, \r3\().8h}, [x8], \strd
.endif
.endm
.macro make_8tap_fn op, type, type_h, type_v
function \op\()_8tap_\type\()_8bpc_neon, export=1
mov x8, \type_h
mov x9, \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, ds2, sr2, shift_hv
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
mov w10, #0x4081 // (1 << 14) | (1 << 7) | (1 << 0)
mul \mx, \mx, w10
mul \my, \my, w10
add \mx, \mx, w8 // mx, 8tap_h, 4tap_h
add \my, \my, w9 // my, 8tap_v, 4tap_v
.ifc \type, prep
uxtw \d_strd, \w
lsl \d_strd, \d_strd, #1
.endif
clz w8, \w
tst \mx, #(0x7f << 14)
sub w8, w8, #24
movrel x10, 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 w9, \mx, #7, #7
and \mx, \mx, #0x7f
b.le 4f
mov \mx, w9
4:
tst \my, #(0x7f << 14)
add \xmx, x10, \mx, uxtw #3
b.ne L(\type\()_8tap_hv)
adr x9, L(\type\()_8tap_h_tbl)
ldrh w8, [x9, x8, lsl #1]
sub x9, x9, w8, uxtw
br x9
20: // 2xN h
.ifc \type, put
add \xmx, \xmx, #2
ld1 {v0.s}[0], [\xmx]
sub \src, \src, #1
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 {v4.8b}, [\src], \s_strd
ld1 {v6.8b}, [\sr2], \s_strd
uxtl v4.8h, v4.8b
uxtl v6.8h, v6.8b
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
mul v3.4h, v3.4h, v0.h[0]
mla v3.4h, v4.4h, v0.h[1]
mla v3.4h, v6.4h, v0.h[2]
mla v3.4h, v7.4h, v0.h[3]
srshr v3.4h, v3.4h, #2
sqrshrun v3.8b, v3.8h, #4
st1 {v3.h}[0], [\dst], \d_strd
st1 {v3.h}[1], [\ds2], \d_strd
b.gt 2b
ret
.endif
40: // 4xN h
add \xmx, \xmx, #2
ld1 {v0.s}[0], [\xmx]
sub \src, \src, #1
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 {v16.8b}, [\src], \s_strd
ld1 {v20.8b}, [\sr2], \s_strd
uxtl v16.8h, v16.8b
uxtl v20.8h, v20.8b
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
mul v16.4h, v16.4h, v0.h[0]
mla v16.4h, v17.4h, v0.h[1]
mla v16.4h, v18.4h, v0.h[2]
mla v16.4h, v19.4h, v0.h[3]
mul v20.4h, v20.4h, v0.h[0]
mla v20.4h, v21.4h, v0.h[1]
mla v20.4h, v22.4h, v0.h[2]
mla v20.4h, v23.4h, v0.h[3]
srshr v16.4h, v16.4h, #2
srshr v20.4h, v20.4h, #2
.ifc \type, put
sqrshrun v16.8b, v16.8h, #4
sqrshrun v20.8b, v20.8h, #4
st1 {v16.s}[0], [\dst], \d_strd
st1 {v20.s}[0], [\ds2], \d_strd
.else
st1 {v16.4h}, [\dst], \d_strd
st1 {v20.4h}, [\ds2], \d_strd
.endif
b.gt 4b
ret
80: // 8xN h
ld1 {v0.8b}, [\xmx]
sub \src, \src, #3
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
8:
ld1 {v16.8b, v17.8b}, [\src], \s_strd
ld1 {v20.8b, v21.8b}, [\sr2], \s_strd
uxtl v16.8h, v16.8b
uxtl v17.8h, v17.8b
uxtl v20.8h, v20.8b
uxtl v21.8h, v21.8b
mul v18.8h, v16.8h, v0.h[0]
mul v22.8h, v20.8h, v0.h[0]
.irpc i, 1234567
ext v19.16b, v16.16b, v17.16b, #(2*\i)
ext v23.16b, v20.16b, v21.16b, #(2*\i)
mla v18.8h, v19.8h, v0.h[\i]
mla v22.8h, v23.8h, v0.h[\i]
.endr
subs \h, \h, #2
srshr v18.8h, v18.8h, #2
srshr v22.8h, v22.8h, #2
.ifc \type, put
sqrshrun v18.8b, v18.8h, #4
sqrshrun v22.8b, v22.8h, #4
st1 {v18.8b}, [\dst], \d_strd
st1 {v22.8b}, [\ds2], \d_strd
.else
st1 {v18.8h}, [\dst], \d_strd
st1 {v22.8h}, [\ds2], \d_strd
.endif
b.gt 8b
ret
160:
320:
640:
1280: // 16xN, 32xN, ... h
ld1 {v0.8b}, [\xmx]
sub \src, \src, #3
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
sub \s_strd, \s_strd, #8
.ifc \type, put
lsl \d_strd, \d_strd, #1
sub \d_strd, \d_strd, \w, uxtw
.endif
161:
ld1 {v16.8b, v17.8b, v18.8b}, [\src], #24
ld1 {v20.8b, v21.8b, v22.8b}, [\sr2], #24
mov \mx, \w
uxtl v16.8h, v16.8b
uxtl v17.8h, v17.8b
uxtl v18.8h, v18.8b
uxtl v20.8h, v20.8b
uxtl v21.8h, v21.8b
uxtl v22.8h, v22.8b
16:
mul v24.8h, v16.8h, v0.h[0]
mul v25.8h, v17.8h, v0.h[0]
mul v26.8h, v20.8h, v0.h[0]
mul v27.8h, v21.8h, v0.h[0]
.irpc i, 1234567
ext v28.16b, v16.16b, v17.16b, #(2*\i)
ext v29.16b, v17.16b, v18.16b, #(2*\i)
ext v30.16b, v20.16b, v21.16b, #(2*\i)
ext v31.16b, v21.16b, v22.16b, #(2*\i)
mla v24.8h, v28.8h, v0.h[\i]
mla v25.8h, v29.8h, v0.h[\i]
mla v26.8h, v30.8h, v0.h[\i]
mla v27.8h, v31.8h, v0.h[\i]
.endr
srshr v24.8h, v24.8h, #2
srshr v25.8h, v25.8h, #2
srshr v26.8h, v26.8h, #2
srshr v27.8h, v27.8h, #2
subs \mx, \mx, #16
.ifc \type, put
sqrshrun v24.8b, v24.8h, #4
sqrshrun2 v24.16b, v25.8h, #4
sqrshrun v26.8b, v26.8h, #4
sqrshrun2 v26.16b, v27.8h, #4
st1 {v24.16b}, [\dst], #16
st1 {v26.16b}, [\ds2], #16
.else
st1 {v24.8h, v25.8h}, [\dst], #32
st1 {v26.8h, v27.8h}, [\ds2], #32
.endif
b.le 9f
mov v16.16b, v18.16b
mov v20.16b, v22.16b
ld1 {v17.8b, v18.8b}, [\src], #16
ld1 {v21.8b, v22.8b}, [\sr2], #16
uxtl v17.8h, v17.8b
uxtl v18.8h, v18.8b
uxtl v21.8h, v21.8b
uxtl v22.8h, v22.8b
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\()_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 w9, \my, #7, #7
and \my, \my, #0x7f
b.le 4f
mov \my, w9
4:
add \xmy, x10, \my, uxtw #3
adr x9, L(\type\()_8tap_v_tbl)
ldrh w8, [x9, x8, lsl #1]
sub x9, x9, w8, uxtw
br x9
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_h \src, \sr2, \s_strd, v1, v2, v3, v4, v5
interleave_1_h v1, v2, v3, v4, v5
b.gt 24f
uxtl_b v1, v2, v3, v4
mul_mla_4 v6, v1, v2, v3, v4, .4h
sqrshrun_b 6, v6
st_h \d_strd, v6, 2
ret
24: // 2x4 v
load_h \sr2, \src, \s_strd, v6, v7
interleave_1_h v5, v6, v7
interleave_2_s v1, v2, v3, v4, v5, v6
uxtl_b v1, v2, v3, v4
mul_mla_4 v6, v1, v2, v3, v4, .8h
sqrshrun_b 6, v6
st_h \d_strd, v6, 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_h \src, \sr2, \s_strd, v1, v2, v3, v4, v5, v6, v7
interleave_1_h v1, v2, v3, v4, v5
interleave_1_h v5, v6, v7
interleave_2_s v1, v2, v3, v4, v5, v6
uxtl_b v1, v2, v3, v4
216:
subs \h, \h, #8
load_h \sr2, \src, \s_strd, v16, v17, v18, v19
load_h \sr2, \src, \s_strd, v20, v21, v22, v23
interleave_1_h v7, v16, v17, v18, v19
interleave_1_h v19, v20, v21, v22, v23
interleave_2_s v5, v6, v7, v16, v17, v18
interleave_2_s v17, v18, v19, v20, v21, v22
uxtl_b v5, v6, v7, v16
uxtl_b v17, v18, v19, v20
mul_mla_8_4 v30, v31, v1, v2, v3, v4, v5, v6, v7, v16, v17, v18, v19, v20
sqrshrun_b 6, v30, v31
st_h \d_strd, v30, 4
st_h \d_strd, v31, 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_s \src, \sr2, \s_strd, v1, v2, v3, v4, v5
interleave_1_s v1, v2, v3, v4, v5
uxtl_b v1, v2, v3, v4
mul_mla_4 v6, v1, v2, v3, v4, .8h
shift_store_4 \type, \d_strd, v6
b.le 0f
load_s \sr2, \src, \s_strd, v6, v7
interleave_1_s v5, v6, v7
uxtl_b v5, v6
mul_mla_4 v7, v3, v4, v5, v6, .8h
shift_store_4 \type, \d_strd, v7
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_s \src, \sr2, \s_strd, v16, v17, v18, v19, v20, v21, v22
interleave_1_s v16, v17, v18
interleave_1_s v18, v19, v20, v21, v22
uxtl_b v16, v17
uxtl_b v18, v19, v20, v21
48:
subs \h, \h, #4
load_s \sr2, \src, \s_strd, v23, v24, v25, v26
interleave_1_s v22, v23, v24, v25, v26
uxtl_b v22, v23, v24, v25
mul_mla_8_2 v1, v2, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25
shift_store_4 \type, \d_strd, v1, v2
b.le 0f
subs \h, \h, #4
load_s \sr2, \src, \s_strd, v27, v16, v17, v18
interleave_1_s v26, v27, v16, v17, v18
uxtl_b v26, v27, v16, v17
mul_mla_8_2 v1, v2, v20, v21, v22, v23, v24, v25, v26, v27, v16, v17
shift_store_4 \type, \d_strd, v1, v2
b.le 0f
subs \h, \h, #4
load_s \sr2, \src, \s_strd, v19, v20, v21, v22
interleave_1_s v18, v19, v20, v21, v22
uxtl_b v18, v19, v20, v21
mul_mla_8_2 v1, v2, v24, v25, v26, v27, v16, v17, v18, v19, v20, v21
shift_store_4 \type, \d_strd, v1, v2
b.gt 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_8b \src, \sr2, \s_strd, v1, v2, v3, v4, v5
uxtl_b v1, v2, v3, v4, v5
mul_mla_4 v6, v1, v2, v3, v4, .8h
mul_mla_4 v7, v2, v3, v4, v5, .8h
shift_store_8 \type, \d_strd, v6, v7
b.le 0f
load_8b \sr2, \src, \s_strd, v6, v7
uxtl_b v6, v7
mul_mla_4 v1, v3, v4, v5, v6, .8h
mul_mla_4 v2, v4, v5, v6, v7, .8h
shift_store_8 \type, \d_strd, v1, v2
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_8b \src, \sr2, \s_strd, v16, v17, v18, v19, v20, v21, v22
uxtl_b v16, v17, v18, v19, v20, v21, v22
88:
subs \h, \h, #2
load_8b \sr2, \src, \s_strd, v23, v24
uxtl_b v23, v24
mul_mla_8_1 v1, v2, v16, v17, v18, v19, v20, v21, v22, v23, v24
shift_store_8 \type, \d_strd, v1, v2
b.le 9f
subs \h, \h, #2
load_8b \sr2, \src, \s_strd, v25, v26
uxtl_b v25, v26
mul_mla_8_1 v3, v4, v18, v19, v20, v21, v22, v23, v24, v25, v26
shift_store_8 \type, \d_strd, v3, v4
b.le 9f
subs \h, \h, #2
load_8b \sr2, \src, \s_strd, v27, v16
uxtl_b v27, v16
mul_mla_8_1 v1, v2, v20, v21, v22, v23, v24, v25, v26, v27, v16
shift_store_8 \type, \d_strd, v1, v2
b.le 9f
subs \h, \h, #2
load_8b \sr2, \src, \s_strd, v17, v18
uxtl_b v17, v18
mul_mla_8_1 v3, v4, v22, v23, v24, v25, v26, v27, v16, v17, v18
shift_store_8 \type, \d_strd, v3, v4
b.le 9f
subs \h, \h, #4
load_8b \sr2, \src, \s_strd, v19, v20, v21, v22
uxtl_b v19, v20, v21, v22
mul_mla_8_1 v1, v2, v24, v25, v26, v27, v16, v17, v18, v19, v20
mul_mla_8_1 v3, v4, v26, v27, v16, v17, v18, v19, v20, v21, v22
shift_store_8 \type, \d_strd, v1, v2, v3, v4
b.gt 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, #8
.ifc \type, put
add \dst, \dst, #8
.else
add \dst, \dst, #16
.endif
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
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
cmp \h, #2
load_16b \src, \sr2, \s_strd, v1, v2, v3, v4, v5
uxtl v16.8h, v1.8b
uxtl v17.8h, v2.8b
uxtl v18.8h, v3.8b
uxtl v19.8h, v4.8b
uxtl v20.8h, v5.8b
uxtl2 v23.8h, v1.16b
uxtl2 v24.8h, v2.16b
uxtl2 v25.8h, v3.16b
uxtl2 v26.8h, v4.16b
uxtl2 v27.8h, v5.16b
mul_mla_4 v1, v16, v17, v18, v19, .8h
mul_mla_4 v16, v17, v18, v19, v20, .8h
mul_mla_4 v2, v23, v24, v25, v26, .8h
mul_mla_4 v17, v24, v25, v26, v27, .8h
shift_store_16 \type, \d_strd, v1, v2, v16, v17
b.le 0f
load_16b \sr2, \src, \s_strd, v6, v7
uxtl v21.8h, v6.8b
uxtl v22.8h, v7.8b
uxtl2 v28.8h, v6.16b
uxtl2 v29.8h, v7.16b
mul_mla_4 v1, v18, v19, v20, v21, .8h
mul_mla_4 v3, v19, v20, v21, v22, .8h
mul_mla_4 v2, v25, v26, v27, v28, .8h
mul_mla_4 v4, v26, v27, v28, v29, .8h
shift_store_16 \type, \d_strd, v1, v2, v3, v4
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 w9, \my, #7, #7
and \my, \my, #0x7f
b.le 4f
mov \my, w9
4:
add \xmy, x10, \my, uxtw #3
adr x9, L(\type\()_8tap_hv_tbl)
ldrh w8, [x9, x8, lsl #1]
sub x9, x9, w8, uxtw
br x9
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, #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 {v28.8b}, [\src], \s_strd
uxtl v28.8h, v28.8b
ext v29.16b, v28.16b, v28.16b, #2
mul v28.4h, v28.4h, v0.4h
mul v29.4h, v29.4h, v0.4h
addp v28.4h, v28.4h, v29.4h
addp v16.4h, v28.4h, v28.4h
srshr v16.4h, v16.4h, #2
bl L(\type\()_8tap_filter_2)
trn1 v16.2s, v16.2s, v28.2s
mov v17.8b, v28.8b
2:
bl L(\type\()_8tap_filter_2)
ext v18.8b, v17.8b, v28.8b, #4
mov v19.8b, v28.8b
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, v19.4h, v1.h[3]
sqrshrn v2.4h, v2.4s, #\shift_hv
sqxtun v2.8b, v2.8h
subs \h, \h, #2
st1 {v2.h}[0], [\dst], \d_strd
st1 {v2.h}[1], [\ds2], \d_strd
b.le 0f
mov v16.8b, v18.8b
mov v17.8b, v19.8b
b 2b
280: // 2x8, 2x16, 2x32 hv
ld1 {v1.8b}, [\xmy]
sub \src, \src, #1
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 {v28.8b}, [\src], \s_strd
uxtl v28.8h, v28.8b
ext v29.16b, v28.16b, v28.16b, #2
mul v28.4h, v28.4h, v0.4h
mul v29.4h, v29.4h, v0.4h
addp v28.4h, v28.4h, v29.4h
addp v16.4h, v28.4h, v28.4h
srshr v16.4h, v16.4h, #2
bl L(\type\()_8tap_filter_2)
trn1 v16.2s, v16.2s, v28.2s
mov v17.8b, v28.8b
bl L(\type\()_8tap_filter_2)
ext v18.8b, v17.8b, v28.8b, #4
mov v19.8b, v28.8b
bl L(\type\()_8tap_filter_2)
ext v20.8b, v19.8b, v28.8b, #4
mov v21.8b, v28.8b
28:
bl L(\type\()_8tap_filter_2)
ext v22.8b, v21.8b, v28.8b, #4
mov v23.8b, v28.8b
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, v19.4h, v1.h[3]
smlal v2.4s, v20.4h, v1.h[4]
smlal v2.4s, v21.4h, v1.h[5]
smlal v2.4s, v22.4h, v1.h[6]
smlal v2.4s, v23.4h, v1.h[7]
sqrshrn v2.4h, v2.4s, #\shift_hv
sqxtun v2.8b, v2.8h
subs \h, \h, #2
st1 {v2.h}[0], [\dst], \d_strd
st1 {v2.h}[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, v23.8b
b 28b
0:
br x15
L(\type\()_8tap_filter_2):
ld1 {v28.8b}, [\sr2], \s_strd
ld1 {v30.8b}, [\src], \s_strd
uxtl v28.8h, v28.8b
uxtl v30.8h, v30.8b
ext v29.16b, v28.16b, v28.16b, #2
ext v31.16b, v30.16b, v30.16b, #2
trn1 v27.2s, v28.2s, v30.2s
trn2 v30.2s, v28.2s, v30.2s
trn1 v28.2s, v29.2s, v31.2s
trn2 v31.2s, v29.2s, v31.2s
mul v27.4h, v27.4h, v0.h[0]
mla v27.4h, v28.4h, v0.h[1]
mla v27.4h, v30.4h, v0.h[2]
mla v27.4h, v31.4h, v0.h[3]
srshr v28.4h, v27.4h, #2
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, #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
// 4x2, 4x4 hv
ld1 {v26.8b}, [\src], \s_strd
uxtl v26.8h, v26.8b
ext v28.16b, v26.16b, v26.16b, #2
ext v29.16b, v26.16b, v26.16b, #4
ext v30.16b, v26.16b, v26.16b, #6
mul v31.4h, v26.4h, v0.h[0]
mla v31.4h, v28.4h, v0.h[1]
mla v31.4h, v29.4h, v0.h[2]
mla v31.4h, v30.4h, v0.h[3]
srshr v16.4h, v31.4h, #2
bl L(\type\()_8tap_filter_4)
mov v17.8b, v28.8b
mov v18.8b, v29.8b
4:
bl L(\type\()_8tap_filter_4)
// Interleaving the mul/mla chains actually hurts performance
// significantly on Cortex A53, thus keeping mul/mla tightly
// chained like this.
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, v28.4h, v1.h[3]
smull v3.4s, v17.4h, v1.h[0]
smlal v3.4s, v18.4h, v1.h[1]
smlal v3.4s, v28.4h, v1.h[2]
smlal v3.4s, v29.4h, v1.h[3]
sqrshrn v2.4h, v2.4s, #\shift_hv
sqrshrn v3.4h, v3.4s, #\shift_hv
subs \h, \h, #2
.ifc \type, put
sqxtun v2.8b, v2.8h
sqxtun v3.8b, v3.8h
st1 {v2.s}[0], [\dst], \d_strd
st1 {v3.s}[0], [\ds2], \d_strd
.else
st1 {v2.4h}, [\dst], \d_strd
st1 {v3.4h}, [\ds2], \d_strd
.endif
b.le 0f
mov v16.8b, v18.8b
mov v17.8b, v28.8b
mov v18.8b, v29.8b
b 4b
480: // 4x8, 4x16, 4x32 hv
ld1 {v1.8b}, [\xmy]
sub \src, \src, #1
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 {v26.8b}, [\src], \s_strd
uxtl v26.8h, v26.8b
ext v28.16b, v26.16b, v26.16b, #2
ext v29.16b, v26.16b, v26.16b, #4
ext v30.16b, v26.16b, v26.16b, #6
mul v31.4h, v26.4h, v0.h[0]
mla v31.4h, v28.4h, v0.h[1]
mla v31.4h, v29.4h, v0.h[2]
mla v31.4h, v30.4h, v0.h[3]
srshr v16.4h, v31.4h, #2
bl L(\type\()_8tap_filter_4)
mov v17.8b, v28.8b
mov v18.8b, v29.8b
bl L(\type\()_8tap_filter_4)
mov v19.8b, v28.8b
mov v20.8b, v29.8b
bl L(\type\()_8tap_filter_4)
mov v21.8b, v28.8b
mov v22.8b, v29.8b
48:
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, v19.4h, v1.h[3]
smlal v2.4s, v20.4h, v1.h[4]
smlal v2.4s, v21.4h, v1.h[5]
smlal v2.4s, v22.4h, v1.h[6]
smlal v2.4s, v28.4h, v1.h[7]
smull v3.4s, v17.4h, v1.h[0]
smlal v3.4s, v18.4h, v1.h[1]
smlal v3.4s, v19.4h, v1.h[2]
smlal v3.4s, v20.4h, v1.h[3]
smlal v3.4s, v21.4h, v1.h[4]
smlal v3.4s, v22.4h, v1.h[5]
smlal v3.4s, v28.4h, v1.h[6]
smlal v3.4s, v29.4h, v1.h[7]
sqrshrn v2.4h, v2.4s, #\shift_hv
sqrshrn v3.4h, v3.4s, #\shift_hv
subs \h, \h, #2
.ifc \type, put
sqxtun v2.8b, v2.8h
sqxtun v3.8b, v3.8h
st1 {v2.s}[0], [\dst], \d_strd
st1 {v3.s}[0], [\ds2], \d_strd
.else
st1 {v2.4h}, [\dst], \d_strd
st1 {v3.4h}, [\ds2], \d_strd
.endif
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, v28.8b
mov v22.8b, v29.8b
b 48b
0:
br x15
L(\type\()_8tap_filter_4):
ld1 {v26.8b}, [\sr2], \s_strd
ld1 {v27.8b}, [\src], \s_strd
uxtl v26.8h, v26.8b
uxtl v27.8h, v27.8b
ext v28.16b, v26.16b, v26.16b, #2
ext v29.16b, v26.16b, v26.16b, #4
ext v30.16b, v26.16b, v26.16b, #6
mul v31.4h, v26.4h, v0.h[0]
mla v31.4h, v28.4h, v0.h[1]
mla v31.4h, v29.4h, v0.h[2]
mla v31.4h, v30.4h, v0.h[3]
ext v28.16b, v27.16b, v27.16b, #2
ext v29.16b, v27.16b, v27.16b, #4
ext v30.16b, v27.16b, v27.16b, #6
mul v27.4h, v27.4h, v0.h[0]
mla v27.4h, v28.4h, v0.h[1]
mla v27.4h, v29.4h, v0.h[2]
mla v27.4h, v30.4h, v0.h[3]
srshr v28.4h, v31.4h, #2
srshr v29.4h, v27.4h, #2
ret
80:
160:
320:
b.gt 880f
add \xmy, \xmy, #2
ld1 {v0.8b}, [\xmx]
ld1 {v1.s}[0], [\xmy]
sub \src, \src, #3
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 {v28.8b, v29.8b}, [\src], \s_strd
uxtl v28.8h, v28.8b
uxtl v29.8h, v29.8b
mul v24.8h, v28.8h, v0.h[0]
.irpc i, 1234567
ext v26.16b, v28.16b, v29.16b, #(2*\i)
mla v24.8h, v26.8h, v0.h[\i]
.endr
srshr v16.8h, v24.8h, #2
bl L(\type\()_8tap_filter_8)
mov v17.16b, v24.16b
mov v18.16b, v25.16b
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, v24.4h, v1.h[2]
smlal2 v5.4s, v24.8h, v1.h[2]
smlal v2.4s, v24.4h, v1.h[3]
smlal2 v3.4s, v24.8h, v1.h[3]
smlal v4.4s, v25.4h, v1.h[3]
smlal2 v5.4s, v25.8h, v1.h[3]
sqrshrn v2.4h, v2.4s, #\shift_hv
sqrshrn2 v2.8h, v3.4s, #\shift_hv
sqrshrn v4.4h, v4.4s, #\shift_hv
sqrshrn2 v4.8h, v5.4s, #\shift_hv
subs \h, \h, #2
.ifc \type, put
sqxtun v2.8b, v2.8h
sqxtun v4.8b, v4.8h
st1 {v2.8b}, [\dst], \d_strd
st1 {v4.8b}, [\ds2], \d_strd
.else
st1 {v2.8h}, [\dst], \d_strd
st1 {v4.8h}, [\ds2], \d_strd
.endif
b.le 9f
mov v16.16b, v18.16b
mov v17.16b, v24.16b
mov v18.16b, v25.16b
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, #8
.ifc \type, put
add \dst, \dst, #8
.else
add \dst, \dst, #16
.endif
b 164b
880: // 8x8, 8x16, ..., 16x8, ..., 32x8, ... hv
640:
1280:
ld1 {v0.8b}, [\xmx]
ld1 {v1.8b}, [\xmy]
sub \src, \src, #3
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 {v28.8b, v29.8b}, [\src], \s_strd
uxtl v28.8h, v28.8b
uxtl v29.8h, v29.8b
mul v24.8h, v28.8h, v0.h[0]
.irpc i, 1234567
ext v26.16b, v28.16b, v29.16b, #(2*\i)
mla v24.8h, v26.8h, v0.h[\i]
.endr
srshr v16.8h, v24.8h, #2
bl L(\type\()_8tap_filter_8)
mov v17.16b, v24.16b
mov v18.16b, v25.16b
bl L(\type\()_8tap_filter_8)
mov v19.16b, v24.16b
mov v20.16b, v25.16b
bl L(\type\()_8tap_filter_8)
mov v21.16b, v24.16b
mov v22.16b, v25.16b
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, v24.4h, v1.h[6]
smlal2 v5.4s, v24.8h, v1.h[6]
smlal v2.4s, v24.4h, v1.h[7]
smlal2 v3.4s, v24.8h, v1.h[7]
smlal v4.4s, v25.4h, v1.h[7]
smlal2 v5.4s, v25.8h, v1.h[7]
sqrshrn v2.4h, v2.4s, #\shift_hv
sqrshrn2 v2.8h, v3.4s, #\shift_hv
sqrshrn v4.4h, v4.4s, #\shift_hv
sqrshrn2 v4.8h, v5.4s, #\shift_hv
subs \h, \h, #2
.ifc \type, put
sqxtun v2.8b, v2.8h
sqxtun v4.8b, v4.8h
st1 {v2.8b}, [\dst], \d_strd
st1 {v4.8b}, [\ds2], \d_strd
.else
st1 {v2.8h}, [\dst], \d_strd
st1 {v4.8h}, [\ds2], \d_strd
.endif
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, v24.16b
mov v22.16b, v25.16b
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, #8
.ifc \type, put
add \dst, \dst, #8
.else
add \dst, \dst, #16
.endif
b 168b
0:
br x15
L(\type\()_8tap_filter_8):
ld1 {v28.8b, v29.8b}, [\sr2], \s_strd
ld1 {v30.8b, v31.8b}, [\src], \s_strd
uxtl v28.8h, v28.8b
uxtl v29.8h, v29.8b
uxtl v30.8h, v30.8b
uxtl v31.8h, v31.8b
mul v24.8h, v28.8h, v0.h[0]
mul v25.8h, v30.8h, v0.h[0]
.irpc i, 1234567
ext v26.16b, v28.16b, v29.16b, #(2*\i)
ext v27.16b, v30.16b, v31.16b, #(2*\i)
mla v24.8h, v26.8h, v0.h[\i]
mla v25.8h, v27.8h, v0.h[\i]
.endr
srshr v24.8h, v24.8h, #2
srshr v25.8h, v25.8h, #2
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_8bpc_neon, export=1
dup v1.16b, \mx
dup v3.16b, \my
mov w9, #16
sub w8, w9, \mx
sub w9, w9, \my
dup v0.16b, w8
dup v2.16b, w9
.ifc \type, prep
uxtw \d_strd, \w
lsl \d_strd, \d_strd, #1
.endif
clz w8, \w
sub w8, w8, #24
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 x9, L(\type\()_bilin_h_tbl)
ldrh w8, [x9, x8, lsl #1]
sub x9, x9, w8, uxtw
br x9
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.s}[0], [\src], \s_strd
ld1 {v6.s}[0], [\sr2], \s_strd
ext v5.8b, v4.8b, v4.8b, #1
ext v7.8b, v6.8b, v6.8b, #1
trn1 v4.4h, v4.4h, v6.4h
trn1 v5.4h, v5.4h, v7.4h
subs \h, \h, #2
umull v4.8h, v4.8b, v0.8b
umlal v4.8h, v5.8b, v1.8b
uqrshrn v4.8b, v4.8h, #4
st1 {v4.h}[0], [\dst], \d_strd
st1 {v4.h}[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 {v4.8b}, [\src], \s_strd
ld1 {v6.8b}, [\sr2], \s_strd
ext v5.8b, v4.8b, v4.8b, #1
ext v7.8b, v6.8b, v6.8b, #1
trn1 v4.2s, v4.2s, v6.2s
trn1 v5.2s, v5.2s, v7.2s
subs \h, \h, #2
umull v4.8h, v4.8b, v0.8b
umlal v4.8h, v5.8b, v1.8b
.ifc \type, put
uqrshrn v4.8b, v4.8h, #4
st1 {v4.s}[0], [\dst], \d_strd
st1 {v4.s}[1], [\ds2], \d_strd
.else
st1 {v4.d}[0], [\dst], \d_strd
st1 {v4.d}[1], [\ds2], \d_strd
.endif
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:
ld1 {v4.16b}, [\src], \s_strd
ld1 {v6.16b}, [\sr2], \s_strd
ext v5.16b, v4.16b, v4.16b, #1
ext v7.16b, v6.16b, v6.16b, #1
subs \h, \h, #2
umull v4.8h, v4.8b, v0.8b
umull v6.8h, v6.8b, v0.8b
umlal v4.8h, v5.8b, v1.8b
umlal v6.8h, v7.8b, v1.8b
.ifc \type, put
uqrshrn v4.8b, v4.8h, #4
uqrshrn v6.8b, v6.8h, #4
st1 {v4.8b}, [\dst], \d_strd
st1 {v6.8b}, [\ds2], \d_strd
.else
st1 {v4.8h}, [\dst], \d_strd
st1 {v6.8h}, [\ds2], \d_strd
.endif
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
sub \s_strd, \s_strd, #8
.ifc \type, put
lsl \d_strd, \d_strd, #1
sub \d_strd, \d_strd, \w, uxtw
.endif
161:
ld1 {v16.d}[1], [\src], #8
ld1 {v20.d}[1], [\sr2], #8
mov \mx, \w
16:
ld1 {v18.16b}, [\src], #16
ld1 {v22.16b}, [\sr2], #16
ext v17.16b, v16.16b, v18.16b, #8
ext v19.16b, v16.16b, v18.16b, #9
ext v21.16b, v20.16b, v22.16b, #8
ext v23.16b, v20.16b, v22.16b, #9
umull v16.8h, v17.8b, v0.8b
umull2 v17.8h, v17.16b, v0.16b
umull v20.8h, v21.8b, v0.8b
umull2 v21.8h, v21.16b, v0.16b
umlal v16.8h, v19.8b, v1.8b
umlal2 v17.8h, v19.16b, v1.16b
umlal v20.8h, v23.8b, v1.8b
umlal2 v21.8h, v23.16b, v1.16b
subs \mx, \mx, #16
.ifc \type, put
uqrshrn v16.8b, v16.8h, #4
uqrshrn2 v16.16b, v17.8h, #4
uqrshrn v20.8b, v20.8h, #4
uqrshrn2 v20.16b, v21.8h, #4
st1 {v16.16b}, [\dst], #16
st1 {v20.16b}, [\ds2], #16
.else
st1 {v16.8h, v17.8h}, [\dst], #32
st1 {v20.8h, v21.8h}, [\ds2], #32
.endif
b.le 9f
mov v16.16b, v18.16b
mov v20.16b, v22.16b
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 x9, L(\type\()_bilin_v_tbl)
ldrh w8, [x9, x8, lsl #1]
sub x9, x9, w8, uxtw
br x9
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.h}[0], [\src], \s_strd
b.gt 24f
ld1 {v17.h}[0], [\sr2], \s_strd
ld1 {v18.h}[0], [\src], \s_strd
trn1 v16.4h, v16.4h, v17.4h
trn1 v17.4h, v17.4h, v18.4h
umull v4.8h, v16.8b, v2.8b
umlal v4.8h, v17.8b, v3.8b
uqrshrn v4.8b, v4.8h, #4
st1 {v4.h}[0], [\dst]
st1 {v4.h}[1], [\ds2]
ret
24: // 2x4, 2x8, ... v
ld1 {v17.h}[0], [\sr2], \s_strd
ld1 {v18.h}[0], [\src], \s_strd
ld1 {v19.h}[0], [\sr2], \s_strd
ld1 {v20.h}[0], [\src], \s_strd
trn1 v16.4h, v16.4h, v17.4h
trn1 v17.4h, v17.4h, v18.4h
trn1 v18.4h, v18.4h, v19.4h
trn1 v19.4h, v19.4h, v20.4h
trn1 v16.2s, v16.2s, v18.2s
trn1 v17.2s, v17.2s, v19.2s
umull v4.8h, v16.8b, v2.8b
umlal v4.8h, v17.8b, v3.8b
subs \h, \h, #4
uqrshrn v4.8b, v4.8h, #4
st1 {v4.h}[0], [\dst], \d_strd
st1 {v4.h}[1], [\ds2], \d_strd
st1 {v4.h}[2], [\dst], \d_strd
st1 {v4.h}[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.s}[0], [\src], \s_strd
4:
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
umull v4.8h, v16.8b, v2.8b
umlal v4.8h, v17.8b, v3.8b
subs \h, \h, #2
.ifc \type, put
uqrshrn v4.8b, v4.8h, #4
st1 {v4.s}[0], [\dst], \d_strd
st1 {v4.s}[1], [\ds2], \d_strd
.else
st1 {v4.d}[0], [\dst], \d_strd
st1 {v4.d}[1], [\ds2], \d_strd
.endif
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 {v16.8b}, [\src], \s_strd
8:
ld1 {v17.8b}, [\sr2], \s_strd
ld1 {v18.8b}, [\src], \s_strd
umull v4.8h, v16.8b, v2.8b
umull v5.8h, v17.8b, v2.8b
umlal v4.8h, v17.8b, v3.8b
umlal v5.8h, v18.8b, v3.8b
subs \h, \h, #2
.ifc \type, put
uqrshrn v4.8b, v4.8h, #4
uqrshrn v5.8b, v5.8h, #4
st1 {v4.8b}, [\dst], \d_strd
st1 {v5.8b}, [\ds2], \d_strd
.else
st1 {v4.8h}, [\dst], \d_strd
st1 {v5.8h}, [\ds2], \d_strd
.endif
b.le 0f
mov v16.8b, v18.8b
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 {v16.16b}, [\src], \s_strd
2:
ld1 {v17.16b}, [\sr2], \s_strd
ld1 {v18.16b}, [\src], \s_strd
umull v4.8h, v16.8b, v2.8b
umull2 v5.8h, v16.16b, v2.16b
umull v6.8h, v17.8b, v2.8b
umull2 v7.8h, v17.16b, v2.16b
umlal v4.8h, v17.8b, v3.8b
umlal2 v5.8h, v17.16b, v3.16b
umlal v6.8h, v18.8b, v3.8b
umlal2 v7.8h, v18.16b, v3.16b
subs \h, \h, #2
.ifc \type, put
uqrshrn v4.8b, v4.8h, #4
uqrshrn2 v4.16b, v5.8h, #4
uqrshrn v6.8b, v6.8h, #4
uqrshrn2 v6.16b, v7.8h, #4
st1 {v4.16b}, [\dst], \d_strd
st1 {v6.16b}, [\ds2], \d_strd
.else
st1 {v4.8h, v5.8h}, [\dst], \d_strd
st1 {v6.8h, v7.8h}, [\ds2], \d_strd
.endif
b.le 9f
mov v16.16b, v18.16b
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, #16
.ifc \type, put
add \dst, \dst, #16
.else
add \dst, \dst, #32
.endif
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):
uxtl v2.8h, v2.8b
uxtl v3.8h, v3.8b
adr x9, L(\type\()_bilin_hv_tbl)
ldrh w8, [x9, x8, lsl #1]
sub x9, x9, w8, uxtw
br x9
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 {v28.s}[0], [\src], \s_strd
ext v29.8b, v28.8b, v28.8b, #1
umull v16.8h, v28.8b, v0.8b
umlal v16.8h, v29.8b, v1.8b
2:
ld1 {v28.s}[0], [\sr2], \s_strd
ld1 {v30.s}[0], [\src], \s_strd
ext v29.8b, v28.8b, v28.8b, #1
ext v31.8b, v30.8b, v30.8b, #1
trn1 v28.4h, v28.4h, v30.4h
trn1 v29.4h, v29.4h, v31.4h
umull v17.8h, v28.8b, v0.8b
umlal v17.8h, v29.8b, v1.8b
trn1 v16.2s, v16.2s, v17.2s
mul v4.4h, v16.4h, v2.4h
mla v4.4h, v17.4h, v3.4h
uqrshrn v4.8b, v4.8h, #8
subs \h, \h, #2
st1 {v4.h}[0], [\dst], \d_strd
st1 {v4.h}[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 {v28.8b}, [\src], \s_strd
ext v29.8b, v28.8b, v28.8b, #1
umull v16.8h, v28.8b, v0.8b
umlal v16.8h, v29.8b, v1.8b
4:
ld1 {v28.8b}, [\sr2], \s_strd
ld1 {v30.8b}, [\src], \s_strd
ext v29.8b, v28.8b, v28.8b, #1
ext v31.8b, v30.8b, v30.8b, #1
trn1 v28.2s, v28.2s, v30.2s
trn1 v29.2s, v29.2s, v31.2s
umull v17.8h, v28.8b, v0.8b
umlal v17.8h, v29.8b, v1.8b
trn1 v16.2d, v16.2d, v17.2d
mul v4.8h, v16.8h, v2.8h
mla v4.8h, v17.8h, v3.8h
subs \h, \h, #2
.ifc \type, put
uqrshrn v4.8b, v4.8h, #8
st1 {v4.s}[0], [\dst], \d_strd
st1 {v4.s}[1], [\ds2], \d_strd
.else
urshr v4.8h, v4.8h, #4
st1 {v4.d}[0], [\dst], \d_strd
st1 {v4.d}[1], [\ds2], \d_strd
.endif
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
ld1 {v28.16b}, [\src], \s_strd
ext v29.16b, v28.16b, v28.16b, #1
umull v16.8h, v28.8b, v0.8b
umlal v16.8h, v29.8b, v1.8b
2:
ld1 {v28.16b}, [\sr2], \s_strd
ld1 {v30.16b}, [\src], \s_strd
ext v29.16b, v28.16b, v28.16b, #1
ext v31.16b, v30.16b, v30.16b, #1
umull v17.8h, v28.8b, v0.8b
umlal v17.8h, v29.8b, v1.8b
umull v18.8h, v30.8b, v0.8b
umlal v18.8h, v31.8b, v1.8b
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
uqrshrn v4.8b, v4.8h, #8
uqrshrn v5.8b, v5.8h, #8
st1 {v4.8b}, [\dst], \d_strd
st1 {v5.8b}, [\ds2], \d_strd
.else
urshr v4.8h, v4.8h, #4
urshr v5.8h, v5.8h, #4
st1 {v4.8h}, [\dst], \d_strd
st1 {v5.8h}, [\ds2], \d_strd
.endif
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, #8
.ifc \type, put
add \dst, \dst, #8
.else
add \dst, \dst, #16
.endif
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, x8, x9, 10
filter_fn prep, x0, x7, x1, x2, w3, w4, w5, x5, w6, x6, x8, x9, 6
.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 {v16.8b, v17.8b}, [x2], x3
load_filter_row d0, w12, w7
uxtl v16.8h, v16.8b
load_filter_row d1, w12, w7
uxtl v17.8h, v17.8b
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
mul v23.8h, v16.8h, v0.8h
sxtl v6.8h, v6.8b
ext v19.16b, v16.16b, v17.16b, #2*2
mul v18.8h, v18.8h, v1.8h
sxtl v7.8h, v7.8b
ext v20.16b, v16.16b, v17.16b, #2*3
mul v19.8h, v19.8h, v2.8h
ext v21.16b, v16.16b, v17.16b, #2*4
saddlp v23.4s, v23.8h
mul v20.8h, v20.8h, v3.8h
ext v22.16b, v16.16b, v17.16b, #2*5
saddlp v18.4s, v18.8h
mul v21.8h, v21.8h, v4.8h
saddlp v19.4s, v19.8h
mul v22.8h, v22.8h, v5.8h
saddlp v20.4s, v20.8h
saddlp v21.4s, v21.8h
saddlp v22.4s, v22.8h
addp v18.4s, v23.4s, v18.4s
ext v23.16b, v16.16b, v17.16b, #2*6
addp v19.4s, v19.4s, v20.4s
mul v23.8h, v23.8h, v6.8h
ext v20.16b, v16.16b, v17.16b, #2*7
mul v20.8h, v20.8h, v7.8h
saddlp v23.4s, v23.8h
addp v21.4s, v21.4s, v22.4s
saddlp v20.4s, v20.8h
addp v20.4s, v23.4s, v20.4s
addp v18.4s, v18.4s, v19.4s
addp v20.4s, v21.4s, v20.4s
add w5, w5, w8
rshrn v16.4h, v18.4s, #3
rshrn2 v16.8h, v20.4s, #3
ret
endfunc
// void dav1d_warp_affine_8x8_8bpc_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)
.macro warp t, shift
function warp_affine_8x8\t\()_8bpc_neon, export=1
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, #3
movrel x11, X(mc_warp_filter), 64*8
mov x15, x30
.ifnb \t
lsl x1, x1, #1
.endif
bl warp_filter_horz_neon
mov v24.16b, v16.16b
bl warp_filter_horz_neon
mov v25.16b, v16.16b
bl warp_filter_horz_neon
mov v26.16b, v16.16b
bl warp_filter_horz_neon
mov v27.16b, v16.16b
bl warp_filter_horz_neon
mov v28.16b, v16.16b
bl warp_filter_horz_neon
mov v29.16b, v16.16b
bl warp_filter_horz_neon
mov v30.16b, v16.16b
1:
add w14, w6, #512
bl warp_filter_horz_neon
mov v31.16b, v16.16b
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
sqrshrn v16.4h, v16.4s, #\shift
mov v26.16b, v27.16b
sqrshrn2 v16.8h, v17.4s, #\shift
mov v27.16b, v28.16b
mov v28.16b, v29.16b
.ifb \t
sqxtun v16.8b, v16.8h
.endif
mov v29.16b, v30.16b
mov v30.16b, v31.16b
subs w10, w10, #1
.ifnb \t
st1 {v16.8h}, [x0], x1
.else
st1 {v16.8b}, [x0], x1
.endif
add w6, w6, w4
b.gt 1b
br x15
endfunc
.endm
warp , 11
warp t, 7
// void dav1d_emu_edge_8bpc_neon(
// const intptr_t bw, const intptr_t bh,
// const intptr_t iw, const intptr_t ih,
// const intptr_t x, const intptr_t y,
// pixel *dst, const ptrdiff_t dst_stride,
// const pixel *ref, const ptrdiff_t ref_stride)
function emu_edge_8bpc_neon, export=1
ldp x8, x9, [sp]
// ref += iclip(y, 0, ih - 1) * PXSTRIDE(ref_stride)
// ref += iclip(x, 0, iw - 1)
sub x12, x3, #1 // ih - 1
cmp x5, x3
sub x13, x2, #1 // iw - 1
csel x12, x12, x5, ge // min(y, ih - 1)
cmp x4, x2
bic x12, x12, x12, asr #63 // max(min(y, ih - 1), 0)
csel x13, x13, x4, ge // min(x, iw - 1)
bic x13, x13, x13, asr #63 // max(min(x, iw - 1), 0)
madd x8, x12, x9, x8 // ref += iclip() * stride
add x8, x8, x13 // ref += iclip()
// bottom_ext = iclip(y + bh - ih, 0, bh - 1)
// top_ext = iclip(-y, 0, bh - 1)
add x10, x5, x1 // y + bh
neg x5, x5 // -y
sub x10, x10, x3 // y + bh - ih
sub x12, x1, #1 // bh - 1
cmp x10, x1
bic x5, x5, x5, asr #63 // max(-y, 0)
csel x10, x10, x12, lt // min(y + bh - ih, bh-1)
cmp x5, x1
bic x10, x10, x10, asr #63 // max(min(y + bh - ih, bh-1), 0)
csel x5, x5, x12, lt // min(max(-y, 0), bh-1)
// right_ext = iclip(x + bw - iw, 0, bw - 1)
// left_ext = iclip(-x, 0, bw - 1)
add x11, x4, x0 // x + bw
neg x4, x4 // -x
sub x11, x11, x2 // x + bw - iw
sub x13, x0, #1 // bw - 1
cmp x11, x0
bic x4, x4, x4, asr #63 // max(-x, 0)
csel x11, x11, x13, lt // min(x + bw - iw, bw-1)
cmp x4, x0
bic x11, x11, x11, asr #63 // max(min(x + bw - iw, bw-1), 0)
csel x4, x4, x13, lt // min(max(-x, 0), bw - 1)
// center_h = bh - top_ext - bottom_ext
// dst += top_ext * PXSTRIDE(dst_stride)
// center_w = bw - left_ext - right_ext
sub x1, x1, x5 // bh - top_ext
madd x6, x5, x7, x6
sub x2, x0, x4 // bw - left_ext
sub x1, x1, x10 // center_h = bh - top_ext - bottom_ext
sub x2, x2, x11 // center_w = bw - left_ext - right_ext
mov x14, x6 // backup of dst
.macro v_loop need_left, need_right
0:
.if \need_left
ld1r {v0.16b}, [x8]
mov x12, x6 // out = dst
mov x3, x4
1:
subs x3, x3, #16
st1 {v0.16b}, [x12], #16
b.gt 1b
.endif
mov x13, x8
add x12, x6, x4 // out = dst + left_ext
mov x3, x2
1:
ld1 {v0.16b, v1.16b}, [x13], #32
subs x3, x3, #32
st1 {v0.16b, v1.16b}, [x12], #32
b.gt 1b
.if \need_right
add x3, x8, x2 // in + center_w
sub x3, x3, #1 // in + center_w - 1
add x12, x6, x4 // dst + left_ext
ld1r {v0.16b}, [x3]
add x12, x12, x2 // out = dst + left_ext + center_w
mov x3, x11
1:
subs x3, x3, #16
st1 {v0.16b}, [x12], #16
b.gt 1b
.endif
subs x1, x1, #1 // center_h--
add x6, x6, x7
add x8, x8, x9
b.gt 0b
.endm
cbz x4, 2f
// need_left
cbz x11, 3f
// need_left + need_right
v_loop 1, 1
b 5f
2:
// !need_left
cbz x11, 4f
// !need_left + need_right
v_loop 0, 1
b 5f
3:
// need_left + !need_right
v_loop 1, 0
b 5f
4:
// !need_left + !need_right
v_loop 0, 0
5:
cbz x10, 3f
// need_bottom
sub x8, x6, x7 // ref = dst - stride
mov x4, x0
1:
ld1 {v0.16b, v1.16b}, [x8], #32
mov x3, x10
2:
subs x3, x3, #1
st1 {v0.16b, v1.16b}, [x6], x7
b.gt 2b
msub x6, x7, x10, x6 // dst -= bottom_ext * stride
subs x4, x4, #32 // bw -= 32
add x6, x6, #32 // dst += 32
b.gt 1b
3:
cbz x5, 3f
// need_top
msub x6, x7, x5, x14 // dst = stored_dst - top_ext * stride
1:
ld1 {v0.16b, v1.16b}, [x14], #32
mov x3, x5
2:
subs x3, x3, #1
st1 {v0.16b, v1.16b}, [x6], x7
b.gt 2b
msub x6, x7, x5, x6 // dst -= top_ext * stride
subs x0, x0, #32 // bw -= 32
add x6, x6, #32 // dst += 32
b.gt 1b
3:
ret
endfunc