ref: 9c56be26dcdb5f32584c5e7e810a7884a9ad4fff
dir: /src/arm/64/looprestoration_tmpl.S/
/*
* Copyright © 2018, VideoLAN and dav1d authors
* 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"
#define FILTER_OUT_STRIDE 384
.macro sgr_funcs bpc
// void dav1d_sgr_finish_filter1_Xbpc_neon(int16_t *tmp,
// const pixel *src, const ptrdiff_t stride,
// const int32_t *a, const int16_t *b,
// const int w, const int h);
function sgr_finish_filter1_\bpc\()bpc_neon, export=1
sub x7, x3, #(4*SUM_STRIDE)
add x8, x3, #(4*SUM_STRIDE)
sub x9, x4, #(2*SUM_STRIDE)
add x10, x4, #(2*SUM_STRIDE)
mov x11, #SUM_STRIDE
mov x12, #FILTER_OUT_STRIDE
add x13, x5, #7
bic x13, x13, #7 // Aligned width
.if \bpc == 8
sub x2, x2, x13
.else
sub x2, x2, x13, lsl #1
.endif
sub x12, x12, x13
sub x11, x11, x13
sub x11, x11, #4 // We read 4 extra elements from a
sub x14, x11, #4 // We read 8 extra elements from b
mov x13, x5
movi v6.8h, #3
movi v7.4s, #3
1:
ld1 {v0.8h, v1.8h}, [x9], #32
ld1 {v2.8h, v3.8h}, [x4], #32
ld1 {v4.8h, v5.8h}, [x10], #32
ld1 {v16.4s, v17.4s, v18.4s}, [x7], #48
ld1 {v19.4s, v20.4s, v21.4s}, [x3], #48
ld1 {v22.4s, v23.4s, v24.4s}, [x8], #48
2:
subs x5, x5, #8
ext v25.16b, v0.16b, v1.16b, #2 // -stride
ext v26.16b, v2.16b, v3.16b, #2 // 0
ext v27.16b, v4.16b, v5.16b, #2 // +stride
ext v28.16b, v0.16b, v1.16b, #4 // +1-stride
ext v29.16b, v2.16b, v3.16b, #4 // +1
ext v30.16b, v4.16b, v5.16b, #4 // +1+stride
add v2.8h, v2.8h, v25.8h // -1, -stride
add v26.8h, v26.8h, v27.8h // 0, +stride
add v0.8h, v0.8h, v28.8h // -1-stride, +1-stride
add v2.8h, v2.8h, v26.8h
add v4.8h, v4.8h, v30.8h // -1+stride, +1+stride
add v2.8h, v2.8h, v29.8h // +1
add v0.8h, v0.8h, v4.8h
ext v25.16b, v16.16b, v17.16b, #4 // -stride
ext v26.16b, v17.16b, v18.16b, #4
shl v2.8h, v2.8h, #2
ext v27.16b, v16.16b, v17.16b, #8 // +1-stride
ext v28.16b, v17.16b, v18.16b, #8
ext v29.16b, v19.16b, v20.16b, #4 // 0
ext v30.16b, v20.16b, v21.16b, #4
mla v2.8h, v0.8h, v6.8h // * 3 -> a
add v25.4s, v25.4s, v19.4s // -stride, -1
add v26.4s, v26.4s, v20.4s
add v16.4s, v16.4s, v27.4s // -1-stride, +1-stride
add v17.4s, v17.4s, v28.4s
ext v27.16b, v19.16b, v20.16b, #8 // +1
ext v28.16b, v20.16b, v21.16b, #8
add v16.4s, v16.4s, v22.4s // -1+stride
add v17.4s, v17.4s, v23.4s
add v29.4s, v29.4s, v27.4s // 0, +1
add v30.4s, v30.4s, v28.4s
add v25.4s, v25.4s, v29.4s
add v26.4s, v26.4s, v30.4s
ext v27.16b, v22.16b, v23.16b, #4 // +stride
ext v28.16b, v23.16b, v24.16b, #4
ext v29.16b, v22.16b, v23.16b, #8 // +1+stride
ext v30.16b, v23.16b, v24.16b, #8
.if \bpc == 8
ld1 {v19.8b}, [x1], #8 // src
.else
ld1 {v19.8h}, [x1], #16 // src
.endif
add v25.4s, v25.4s, v27.4s // +stride
add v26.4s, v26.4s, v28.4s
add v16.4s, v16.4s, v29.4s // +1+stride
add v17.4s, v17.4s, v30.4s
shl v25.4s, v25.4s, #2
shl v26.4s, v26.4s, #2
mla v25.4s, v16.4s, v7.4s // * 3 -> b
mla v26.4s, v17.4s, v7.4s
.if \bpc == 8
uxtl v19.8h, v19.8b // src
.endif
mov v0.16b, v1.16b
umlal v25.4s, v2.4h, v19.4h // b + a * src
umlal2 v26.4s, v2.8h, v19.8h
mov v2.16b, v3.16b
rshrn v25.4h, v25.4s, #9
rshrn2 v25.8h, v26.4s, #9
mov v4.16b, v5.16b
st1 {v25.8h}, [x0], #16
b.le 3f
mov v16.16b, v18.16b
mov v19.16b, v21.16b
mov v22.16b, v24.16b
ld1 {v1.8h}, [x9], #16
ld1 {v3.8h}, [x4], #16
ld1 {v5.8h}, [x10], #16
ld1 {v17.4s, v18.4s}, [x7], #32
ld1 {v20.4s, v21.4s}, [x3], #32
ld1 {v23.4s, v24.4s}, [x8], #32
b 2b
3:
subs x6, x6, #1
b.le 0f
mov x5, x13
add x0, x0, x12, lsl #1
add x1, x1, x2
add x3, x3, x11, lsl #2
add x7, x7, x11, lsl #2
add x8, x8, x11, lsl #2
add x4, x4, x14, lsl #1
add x9, x9, x14, lsl #1
add x10, x10, x14, lsl #1
b 1b
0:
ret
endfunc
// void dav1d_sgr_finish_filter2_Xbpc_neon(int16_t *tmp,
// const pixel *src, const ptrdiff_t stride,
// const int32_t *a, const int16_t *b,
// const int w, const int h);
function sgr_finish_filter2_\bpc\()bpc_neon, export=1
add x7, x3, #(4*(SUM_STRIDE))
sub x3, x3, #(4*(SUM_STRIDE))
add x8, x4, #(2*(SUM_STRIDE))
sub x4, x4, #(2*(SUM_STRIDE))
mov x9, #(2*SUM_STRIDE)
mov x10, #FILTER_OUT_STRIDE
add x11, x5, #7
bic x11, x11, #7 // Aligned width
.if \bpc == 8
sub x2, x2, x11
.else
sub x2, x2, x11, lsl #1
.endif
sub x10, x10, x11
sub x9, x9, x11
sub x9, x9, #4 // We read 4 extra elements from a
sub x12, x9, #4 // We read 8 extra elements from b
mov x11, x5
movi v4.8h, #5
movi v5.4s, #5
movi v6.8h, #6
movi v7.4s, #6
1:
ld1 {v0.8h, v1.8h}, [x4], #32
ld1 {v2.8h, v3.8h}, [x8], #32
ld1 {v16.4s, v17.4s, v18.4s}, [x3], #48
ld1 {v19.4s, v20.4s, v21.4s}, [x7], #48
2:
subs x5, x5, #8
ext v24.16b, v0.16b, v1.16b, #4 // +1-stride
ext v25.16b, v2.16b, v3.16b, #4 // +1+stride
ext v22.16b, v0.16b, v1.16b, #2 // -stride
ext v23.16b, v2.16b, v3.16b, #2 // +stride
add v0.8h, v0.8h, v24.8h // -1-stride, +1-stride
add v25.8h, v2.8h, v25.8h // -1+stride, +1+stride
add v2.8h, v22.8h, v23.8h // -stride, +stride
add v0.8h, v0.8h, v25.8h
ext v22.16b, v16.16b, v17.16b, #4 // -stride
ext v23.16b, v17.16b, v18.16b, #4
ext v24.16b, v19.16b, v20.16b, #4 // +stride
ext v25.16b, v20.16b, v21.16b, #4
ext v26.16b, v16.16b, v17.16b, #8 // +1-stride
ext v27.16b, v17.16b, v18.16b, #8
ext v28.16b, v19.16b, v20.16b, #8 // +1+stride
ext v29.16b, v20.16b, v21.16b, #8
mul v0.8h, v0.8h, v4.8h // * 5
mla v0.8h, v2.8h, v6.8h // * 6
.if \bpc == 8
ld1 {v31.8b}, [x1], #8
.else
ld1 {v31.8h}, [x1], #16
.endif
add v16.4s, v16.4s, v26.4s // -1-stride, +1-stride
add v17.4s, v17.4s, v27.4s
add v19.4s, v19.4s, v28.4s // -1+stride, +1+stride
add v20.4s, v20.4s, v29.4s
add v16.4s, v16.4s, v19.4s
add v17.4s, v17.4s, v20.4s
add v22.4s, v22.4s, v24.4s // -stride, +stride
add v23.4s, v23.4s, v25.4s
// This is, surprisingly, faster than other variants where the
// mul+mla pairs are further apart, on Cortex A53.
mul v16.4s, v16.4s, v5.4s // * 5
mla v16.4s, v22.4s, v7.4s // * 6
mul v17.4s, v17.4s, v5.4s // * 5
mla v17.4s, v23.4s, v7.4s // * 6
.if \bpc == 8
uxtl v31.8h, v31.8b
.endif
umlal v16.4s, v0.4h, v31.4h // b + a * src
umlal2 v17.4s, v0.8h, v31.8h
mov v0.16b, v1.16b
rshrn v16.4h, v16.4s, #9
rshrn2 v16.8h, v17.4s, #9
mov v2.16b, v3.16b
st1 {v16.8h}, [x0], #16
b.le 3f
mov v16.16b, v18.16b
mov v19.16b, v21.16b
ld1 {v1.8h}, [x4], #16
ld1 {v3.8h}, [x8], #16
ld1 {v17.4s, v18.4s}, [x3], #32
ld1 {v20.4s, v21.4s}, [x7], #32
b 2b
3:
subs x6, x6, #1
b.le 0f
mov x5, x11
add x0, x0, x10, lsl #1
add x1, x1, x2
add x3, x3, x9, lsl #2
add x7, x7, x9, lsl #2
add x4, x4, x12, lsl #1
add x8, x8, x12, lsl #1
mov x13, x3
mov x14, x4
ld1 {v0.8h, v1.8h}, [x4], #32
ld1 {v16.4s, v17.4s, v18.4s}, [x3], #48
4:
subs x5, x5, #8
ext v23.16b, v0.16b, v1.16b, #4 // +1
ext v22.16b, v0.16b, v1.16b, #2 // 0
add v0.8h, v0.8h, v23.8h // -1, +1
ext v24.16b, v16.16b, v17.16b, #4 // 0
ext v25.16b, v17.16b, v18.16b, #4
ext v26.16b, v16.16b, v17.16b, #8 // +1
ext v27.16b, v17.16b, v18.16b, #8
mul v2.8h, v22.8h, v6.8h // * 6
mla v2.8h, v0.8h, v4.8h // * 5 -> a
.if \bpc == 8
ld1 {v31.8b}, [x1], #8
.else
ld1 {v31.8h}, [x1], #16
.endif
add v16.4s, v16.4s, v26.4s // -1, +1
add v17.4s, v17.4s, v27.4s
.if \bpc == 8
uxtl v31.8h, v31.8b
.endif
// This is, surprisingly, faster than other variants where the
// mul+mla pairs are further apart, on Cortex A53.
mul v24.4s, v24.4s, v7.4s // * 6
mla v24.4s, v16.4s, v5.4s // * 5 -> b
mul v25.4s, v25.4s, v7.4s // * 6
mla v25.4s, v17.4s, v5.4s // * 5 -> b
umlal v24.4s, v2.4h, v31.4h // b + a * src
umlal2 v25.4s, v2.8h, v31.8h
mov v0.16b, v1.16b
rshrn v24.4h, v24.4s, #8
rshrn2 v24.8h, v25.4s, #8
mov v16.16b, v18.16b
st1 {v24.8h}, [x0], #16
b.le 5f
ld1 {v1.8h}, [x4], #16
ld1 {v17.4s, v18.4s}, [x3], #32
b 4b
5:
subs x6, x6, #1
b.le 0f
mov x5, x11
add x0, x0, x10, lsl #1
add x1, x1, x2
mov x3, x13 // Rewind x3/x4 to where they started
mov x4, x14
b 1b
0:
ret
endfunc
// void dav1d_sgr_weighted1_Xbpc_neon(pixel *dst, const ptrdiff_t dst_stride,
// const pixel *src, const ptrdiff_t src_stride,
// const int16_t *t1, const int w, const int h,
// const int wt, const int bitdepth_max);
function sgr_weighted1_\bpc\()bpc_neon, export=1
.if \bpc == 16
ldr w8, [sp]
.endif
dup v31.8h, w7
cmp x6, #2
.if \bpc == 16
dup v30.8h, w8
.endif
add x9, x0, x1
add x10, x2, x3
add x11, x4, #2*FILTER_OUT_STRIDE
mov x7, #(4*FILTER_OUT_STRIDE)
lsl x1, x1, #1
lsl x3, x3, #1
add x8, x5, #7
bic x8, x8, #7 // Aligned width
.if \bpc == 8
sub x1, x1, x8
sub x3, x3, x8
.else
sub x1, x1, x8, lsl #1
sub x3, x3, x8, lsl #1
.endif
sub x7, x7, x8, lsl #1
mov x8, x5
b.lt 2f
1:
.if \bpc == 8
ld1 {v0.8b}, [x2], #8
ld1 {v4.8b}, [x10], #8
.else
ld1 {v0.8h}, [x2], #16
ld1 {v4.8h}, [x10], #16
.endif
ld1 {v1.8h}, [x4], #16
ld1 {v5.8h}, [x11], #16
subs x5, x5, #8
.if \bpc == 8
ushll v0.8h, v0.8b, #4 // u
ushll v4.8h, v4.8b, #4 // u
.else
shl v0.8h, v0.8h, #4 // u
shl v4.8h, v4.8h, #4 // u
.endif
sub v1.8h, v1.8h, v0.8h // t1 - u
sub v5.8h, v5.8h, v4.8h // t1 - u
ushll v2.4s, v0.4h, #7 // u << 7
ushll2 v3.4s, v0.8h, #7 // u << 7
ushll v6.4s, v4.4h, #7 // u << 7
ushll2 v7.4s, v4.8h, #7 // u << 7
smlal v2.4s, v1.4h, v31.4h // v
smlal2 v3.4s, v1.8h, v31.8h // v
smlal v6.4s, v5.4h, v31.4h // v
smlal2 v7.4s, v5.8h, v31.8h // v
.if \bpc == 8
rshrn v2.4h, v2.4s, #11
rshrn2 v2.8h, v3.4s, #11
rshrn v6.4h, v6.4s, #11
rshrn2 v6.8h, v7.4s, #11
sqxtun v2.8b, v2.8h
sqxtun v6.8b, v6.8h
st1 {v2.8b}, [x0], #8
st1 {v6.8b}, [x9], #8
.else
sqrshrun v2.4h, v2.4s, #11
sqrshrun2 v2.8h, v3.4s, #11
sqrshrun v6.4h, v6.4s, #11
sqrshrun2 v6.8h, v7.4s, #11
umin v2.8h, v2.8h, v30.8h
umin v6.8h, v6.8h, v30.8h
st1 {v2.8h}, [x0], #16
st1 {v6.8h}, [x9], #16
.endif
b.gt 1b
sub x6, x6, #2
cmp x6, #1
b.lt 0f
mov x5, x8
add x0, x0, x1
add x9, x9, x1
add x2, x2, x3
add x10, x10, x3
add x4, x4, x7
add x11, x11, x7
b.eq 2f
b 1b
2:
.if \bpc == 8
ld1 {v0.8b}, [x2], #8
.else
ld1 {v0.8h}, [x2], #16
.endif
ld1 {v1.8h}, [x4], #16
subs x5, x5, #8
.if \bpc == 8
ushll v0.8h, v0.8b, #4 // u
.else
shl v0.8h, v0.8h, #4 // u
.endif
sub v1.8h, v1.8h, v0.8h // t1 - u
ushll v2.4s, v0.4h, #7 // u << 7
ushll2 v3.4s, v0.8h, #7 // u << 7
smlal v2.4s, v1.4h, v31.4h // v
smlal2 v3.4s, v1.8h, v31.8h // v
.if \bpc == 8
rshrn v2.4h, v2.4s, #11
rshrn2 v2.8h, v3.4s, #11
sqxtun v2.8b, v2.8h
st1 {v2.8b}, [x0], #8
.else
sqrshrun v2.4h, v2.4s, #11
sqrshrun2 v2.8h, v3.4s, #11
umin v2.8h, v2.8h, v30.8h
st1 {v2.8h}, [x0], #16
.endif
b.gt 2b
0:
ret
endfunc
// void dav1d_sgr_weighted2_Xbpc_neon(pixel *dst, const ptrdiff_t stride,
// const pixel *src, const ptrdiff_t src_stride,
// const int16_t *t1, const int16_t *t2,
// const int w, const int h,
// const int16_t wt[2]);
function sgr_weighted2_\bpc\()bpc_neon, export=1
.if \bpc == 8
ldr x8, [sp]
.else
ldp x8, x9, [sp]
.endif
cmp x7, #2
add x10, x0, x1
add x11, x2, x3
add x12, x4, #2*FILTER_OUT_STRIDE
add x13, x5, #2*FILTER_OUT_STRIDE
ld2r {v30.8h, v31.8h}, [x8] // wt[0], wt[1]
.if \bpc == 16
dup v29.8h, w9
.endif
mov x8, #4*FILTER_OUT_STRIDE
lsl x1, x1, #1
lsl x3, x3, #1
add x9, x6, #7
bic x9, x9, #7 // Aligned width
.if \bpc == 8
sub x1, x1, x9
sub x3, x3, x9
.else
sub x1, x1, x9, lsl #1
sub x3, x3, x9, lsl #1
.endif
sub x8, x8, x9, lsl #1
mov x9, x6
b.lt 2f
1:
.if \bpc == 8
ld1 {v0.8b}, [x2], #8
ld1 {v16.8b}, [x11], #8
.else
ld1 {v0.8h}, [x2], #16
ld1 {v16.8h}, [x11], #16
.endif
ld1 {v1.8h}, [x4], #16
ld1 {v17.8h}, [x12], #16
ld1 {v2.8h}, [x5], #16
ld1 {v18.8h}, [x13], #16
subs x6, x6, #8
.if \bpc == 8
ushll v0.8h, v0.8b, #4 // u
ushll v16.8h, v16.8b, #4 // u
.else
shl v0.8h, v0.8h, #4 // u
shl v16.8h, v16.8h, #4 // u
.endif
sub v1.8h, v1.8h, v0.8h // t1 - u
sub v2.8h, v2.8h, v0.8h // t2 - u
sub v17.8h, v17.8h, v16.8h // t1 - u
sub v18.8h, v18.8h, v16.8h // t2 - u
ushll v3.4s, v0.4h, #7 // u << 7
ushll2 v4.4s, v0.8h, #7 // u << 7
ushll v19.4s, v16.4h, #7 // u << 7
ushll2 v20.4s, v16.8h, #7 // u << 7
smlal v3.4s, v1.4h, v30.4h // wt[0] * (t1 - u)
smlal v3.4s, v2.4h, v31.4h // wt[1] * (t2 - u)
smlal2 v4.4s, v1.8h, v30.8h // wt[0] * (t1 - u)
smlal2 v4.4s, v2.8h, v31.8h // wt[1] * (t2 - u)
smlal v19.4s, v17.4h, v30.4h // wt[0] * (t1 - u)
smlal v19.4s, v18.4h, v31.4h // wt[1] * (t2 - u)
smlal2 v20.4s, v17.8h, v30.8h // wt[0] * (t1 - u)
smlal2 v20.4s, v18.8h, v31.8h // wt[1] * (t2 - u)
.if \bpc == 8
rshrn v3.4h, v3.4s, #11
rshrn2 v3.8h, v4.4s, #11
rshrn v19.4h, v19.4s, #11
rshrn2 v19.8h, v20.4s, #11
sqxtun v3.8b, v3.8h
sqxtun v19.8b, v19.8h
st1 {v3.8b}, [x0], #8
st1 {v19.8b}, [x10], #8
.else
sqrshrun v3.4h, v3.4s, #11
sqrshrun2 v3.8h, v4.4s, #11
sqrshrun v19.4h, v19.4s, #11
sqrshrun2 v19.8h, v20.4s, #11
umin v3.8h, v3.8h, v29.8h
umin v19.8h, v19.8h, v29.8h
st1 {v3.8h}, [x0], #16
st1 {v19.8h}, [x10], #16
.endif
b.gt 1b
subs x7, x7, #2
cmp x7, #1
b.lt 0f
mov x6, x9
add x0, x0, x1
add x10, x10, x1
add x2, x2, x3
add x11, x11, x3
add x4, x4, x8
add x12, x12, x8
add x5, x5, x8
add x13, x13, x8
b.eq 2f
b 1b
2:
.if \bpc == 8
ld1 {v0.8b}, [x2], #8
.else
ld1 {v0.8h}, [x2], #16
.endif
ld1 {v1.8h}, [x4], #16
ld1 {v2.8h}, [x5], #16
subs x6, x6, #8
.if \bpc == 8
ushll v0.8h, v0.8b, #4 // u
.else
shl v0.8h, v0.8h, #4 // u
.endif
sub v1.8h, v1.8h, v0.8h // t1 - u
sub v2.8h, v2.8h, v0.8h // t2 - u
ushll v3.4s, v0.4h, #7 // u << 7
ushll2 v4.4s, v0.8h, #7 // u << 7
smlal v3.4s, v1.4h, v30.4h // wt[0] * (t1 - u)
smlal v3.4s, v2.4h, v31.4h // wt[1] * (t2 - u)
smlal2 v4.4s, v1.8h, v30.8h // wt[0] * (t1 - u)
smlal2 v4.4s, v2.8h, v31.8h // wt[1] * (t2 - u)
.if \bpc == 8
rshrn v3.4h, v3.4s, #11
rshrn2 v3.8h, v4.4s, #11
sqxtun v3.8b, v3.8h
st1 {v3.8b}, [x0], #8
.else
sqrshrun v3.4h, v3.4s, #11
sqrshrun2 v3.8h, v4.4s, #11
umin v3.8h, v3.8h, v29.8h
st1 {v3.8h}, [x0], #16
.endif
b.gt 1b
0:
ret
endfunc
.endm