ref: 53747dfe65eaf670a7192f55117f3bf1e0280743
dir: libvpx/vpx_dsp/arm/vpx_convolve8_avg_horiz_filter_type1_neon.asm
;
; Copyright (c) 2018 The WebM project authors. All Rights Reserved.
;
; Use of this source code is governed by a BSD-style license
; that can be found in the LICENSE file in the root of the source
; tree. An additional intellectual property rights grant can be found
; in the file PATENTS. All contributing project authors may
; be found in the AUTHORS file in the root of the source tree.
;
;**************Variables Vs Registers*****************************************
; r0 => src
; r1 => dst
; r2 => src_stride
; r3 => dst_stride
; r4 => filter_x0
; r8 => ht
; r10 => wd
EXPORT |vpx_convolve8_avg_horiz_filter_type1_neon|
ARM
REQUIRE8
PRESERVE8
AREA ||.text||, CODE, READONLY, ALIGN=2
|vpx_convolve8_avg_horiz_filter_type1_neon| PROC
stmfd sp!, {r4 - r12, r14} ;stack stores the values of
; the arguments
vpush {d8 - d15} ; stack offset by 64
mov r4, r1
mov r1, r2
mov r2, r4
start_loop_count
ldr r4, [sp, #104] ;loads pi1_coeff
ldr r8, [sp, #108] ;loads x0_q4
add r4, r4, r8, lsl #4 ;r4 = filter[x0_q4]
ldr r8, [sp, #128] ;loads ht
ldr r10, [sp, #124] ;loads wd
vld2.8 {d0, d1}, [r4] ;coeff = vld1_s8(pi1_coeff)
mov r11, #1
subs r14, r8, #0 ;checks for ht == 0
vabs.s8 d2, d0 ;vabs_s8(coeff)
vdup.8 d24, d2[0] ;coeffabs_0 = vdup_lane_u8(coeffabs,
; 0)
sub r12, r0, #3 ;pu1_src - 3
vdup.8 d25, d2[1] ;coeffabs_1 = vdup_lane_u8(coeffabs,
; 1)
add r4, r12, r2 ;pu1_src_tmp2_8 = pu1_src + src_strd
vdup.8 d26, d2[2] ;coeffabs_2 = vdup_lane_u8(coeffabs,
; 2)
rsb r9, r10, r2, lsl #1 ;2*src_strd - wd
vdup.8 d27, d2[3] ;coeffabs_3 = vdup_lane_u8(coeffabs,
; 3)
rsb r8, r10, r3, lsl #1 ;2*dst_strd - wd
vdup.8 d28, d2[4] ;coeffabs_4 = vdup_lane_u8(coeffabs,
; 4)
vdup.8 d29, d2[5] ;coeffabs_5 = vdup_lane_u8(coeffabs,
; 5)
vdup.8 d30, d2[6] ;coeffabs_6 = vdup_lane_u8(coeffabs,
; 6)
vdup.8 d31, d2[7] ;coeffabs_7 = vdup_lane_u8(coeffabs,
; 7)
mov r7, r1
cmp r10, #4
ble outer_loop_4
cmp r10, #24
moveq r10, #16
addeq r8, #8
addeq r9, #8
cmp r10, #16
bge outer_loop_16
cmp r10, #12
addeq r8, #4
addeq r9, #4
b outer_loop_8
outer_loop8_residual
sub r12, r0, #3 ;pu1_src - 3
mov r1, r7
mov r14, #32
add r1, #16
add r12, #16
mov r10, #8
add r8, #8
add r9, #8
outer_loop_8
add r6, r1, r3 ;pu1_dst + dst_strd
add r4, r12, r2 ;pu1_src + src_strd
subs r5, r10, #0 ;checks wd
ble end_inner_loop_8
inner_loop_8
mov r7, #0xc000
vld1.u32 {d0}, [r12], r11 ;vector load pu1_src
vdup.16 q4, r7
vld1.u32 {d1}, [r12], r11
vdup.16 q5, r7
vld1.u32 {d2}, [r12], r11
vld1.u32 {d3}, [r12], r11
mov r7, #0x4000
vld1.u32 {d4}, [r12], r11
vmlsl.u8 q4, d1, d25 ;mul_res = vmlal_u8(src[0_1],
; coeffabs_1);
vld1.u32 {d5}, [r12], r11
vmlal.u8 q4, d3, d27 ;mul_res = vmull_u8(src[0_3],
; coeffabs_3);
vld1.u32 {d6}, [r12], r11
vmlsl.u8 q4, d0, d24 ;mul_res = vmlsl_u8(src[0_0],
; coeffabs_0);
vld1.u32 {d7}, [r12], r11
vmlal.u8 q4, d2, d26 ;mul_res = vmlsl_u8(src[0_2],
; coeffabs_2);
vld1.u32 {d12}, [r4], r11 ;vector load pu1_src + src_strd
vmlal.u8 q4, d4, d28 ;mul_res = vmlal_u8(src[0_4],
; coeffabs_4);
vld1.u32 {d13}, [r4], r11
vmlal.u8 q4, d5, d29 ;mul_res = vmlsl_u8(src[0_5],
; coeffabs_5);
vld1.u32 {d14}, [r4], r11
vmlsl.u8 q4, d6, d30 ;mul_res = vmlal_u8(src[0_6],
; coeffabs_6);
vld1.u32 {d15}, [r4], r11
vmlsl.u8 q4, d7, d31 ;mul_res = vmlsl_u8(src[0_7],
; coeffabs_7);
vld1.u32 {d16}, [r4], r11 ;vector load pu1_src + src_strd
vdup.16 q11, r7
vmlal.u8 q5, d15, d27 ;mul_res = vmull_u8(src[0_3],
; coeffabs_3);
vld1.u32 {d17}, [r4], r11
vmlal.u8 q5, d14, d26 ;mul_res = vmlsl_u8(src[0_2],
; coeffabs_2);
vhadd.s16 q4, q4, q11
vld1.u32 {d18}, [r4], r11
vmlal.u8 q5, d16, d28 ;mul_res = vmlal_u8(src[0_4],
; coeffabs_4);
vld1.u32 {d19}, [r4], r11 ;vector load pu1_src + src_strd
vmlal.u8 q5, d17, d29 ;mul_res = vmlsl_u8(src[0_5],
; coeffabs_5);
vld1.u8 {d6}, [r1]
vqrshrun.s16 d20, q4, #6 ;right shift and saturating narrow
; result 1
vmlsl.u8 q5, d18, d30 ;mul_res = vmlal_u8(src[0_6],
; coeffabs_6);
vmlsl.u8 q5, d19, d31 ;mul_res = vmlsl_u8(src[0_7],
; coeffabs_7);
vld1.u8 {d7}, [r6]
vrhadd.u8 d20, d20, d6
vmlsl.u8 q5, d12, d24 ;mul_res = vmlsl_u8(src[0_0],
; coeffabs_0);
vmlsl.u8 q5, d13, d25 ;mul_res = vmlal_u8(src[0_1],
; coeffabs_1);
vst1.8 {d20}, [r1]! ;store the result pu1_dst
vhadd.s16 q5, q5, q11
subs r5, r5, #8 ;decrement the wd loop
vqrshrun.s16 d8, q5, #6 ;right shift and saturating narrow
; result 2
vrhadd.u8 d8, d8, d7
vst1.8 {d8}, [r6]! ;store the result pu1_dst
cmp r5, #4
bgt inner_loop_8
end_inner_loop_8
subs r14, r14, #2 ;decrement the ht loop
add r12, r12, r9 ;increment the src pointer by
; 2*src_strd-wd
add r1, r1, r8 ;increment the dst pointer by
; 2*dst_strd-wd
bgt outer_loop_8
ldr r10, [sp, #120] ;loads wd
cmp r10, #12
beq outer_loop4_residual
end_loops
b end_func
outer_loop_16
str r0, [sp, #-4]!
str r7, [sp, #-4]!
add r6, r1, r3 ;pu1_dst + dst_strd
add r4, r12, r2 ;pu1_src + src_strd
and r0, r12, #31
mov r7, #0xc000
sub r5, r10, #0 ;checks wd
pld [r4, r2, lsl #1]
pld [r12, r2, lsl #1]
vld1.u32 {q0}, [r12], r11 ;vector load pu1_src
vdup.16 q4, r7
vld1.u32 {q1}, [r12], r11
vld1.u32 {q2}, [r12], r11
vld1.u32 {q3}, [r12], r11
vmlsl.u8 q4, d0, d24 ;mul_res = vmlsl_u8(src[0_0],
; coeffabs_0);
vld1.u32 {q6}, [r12], r11
vmlsl.u8 q4, d2, d25 ;mul_res = vmlal_u8(src[0_1],
; coeffabs_1);
vld1.u32 {q7}, [r12], r11
vmlal.u8 q4, d4, d26 ;mul_res = vmlsl_u8(src[0_2],
; coeffabs_2);
vld1.u32 {q8}, [r12], r11
vmlal.u8 q4, d6, d27 ;mul_res = vmull_u8(src[0_3],
; coeffabs_3);
vld1.u32 {q9}, [r12], r11
vmlal.u8 q4, d12, d28 ;mul_res = vmlal_u8(src[0_4],
; coeffabs_4);
vmlal.u8 q4, d14, d29 ;mul_res = vmlsl_u8(src[0_5],
; coeffabs_5);
vdup.16 q10, r7
vmlsl.u8 q4, d16, d30 ;mul_res = vmlal_u8(src[0_6],
; coeffabs_6);
vmlsl.u8 q4, d18, d31 ;mul_res = vmlsl_u8(src[0_7],
; coeffabs_7);
inner_loop_16
vmlsl.u8 q10, d1, d24
vdup.16 q5, r7
vmlsl.u8 q10, d3, d25
mov r7, #0x4000
vdup.16 q11, r7
vmlal.u8 q10, d5, d26
vld1.u32 {q0}, [r4], r11 ;vector load pu1_src
vhadd.s16 q4, q4, q11
vld1.u32 {q1}, [r4], r11
vmlal.u8 q10, d7, d27
add r12, #8
subs r5, r5, #16
vmlal.u8 q10, d13, d28
vld1.u32 {q2}, [r4], r11
vmlal.u8 q10, d15, d29
vld1.u32 {q3}, [r4], r11
vqrshrun.s16 d8, q4, #6 ;right shift and saturating narrow
; result 1
vmlsl.u8 q10, d17, d30
vld1.u32 {q6}, [r4], r11
vmlsl.u8 q10, d19, d31
vld1.u32 {q7}, [r4], r11
add r7, r1, #8
vmlsl.u8 q5, d0, d24 ;mul_res = vmlsl_u8(src[0_0],
; coeffabs_0);
vmlsl.u8 q5, d2, d25 ;mul_res = vmlal_u8(src[0_1],
; coeffabs_1);
vld1.u32 {q8}, [r4], r11
vhadd.s16 q10, q10, q11
vld1.u32 {q9}, [r4], r11
vld1.u8 {d0}, [r1]
vmlal.u8 q5, d4, d26 ;mul_res = vmlsl_u8(src[0_2],
; coeffabs_2);
vld1.u8 {d2}, [r7]
vmlal.u8 q5, d6, d27 ;mul_res = vmull_u8(src[0_3],
; coeffabs_3);
add r4, #8
mov r7, #0xc000
vmlal.u8 q5, d12, d28 ;mul_res = vmlal_u8(src[0_4],
; coeffabs_4);
vmlal.u8 q5, d14, d29 ;mul_res = vmlsl_u8(src[0_5],
; coeffabs_5);
vqrshrun.s16 d9, q10, #6
vdup.16 q11, r7
vmlsl.u8 q5, d16, d30 ;mul_res = vmlal_u8(src[0_6],
; coeffabs_6);
vmlsl.u8 q5, d18, d31 ;mul_res = vmlsl_u8(src[0_7],
; coeffabs_7);
mov r7, #0x4000
vrhadd.u8 d8, d8, d0
vrhadd.u8 d9, d9, d2
vmlsl.u8 q11, d1, d24
vmlsl.u8 q11, d3, d25
vdup.16 q10, r7
vmlal.u8 q11, d5, d26
pld [r12, r2, lsl #2]
pld [r4, r2, lsl #2]
addeq r12, r12, r9 ;increment the src pointer by
; 2*src_strd-wd
addeq r4, r12, r2 ;pu1_src + src_strd
vmlal.u8 q11, d7, d27
vmlal.u8 q11, d13, d28
vst1.8 {q4}, [r1]! ;store the result pu1_dst
subeq r14, r14, #2
vhadd.s16 q5, q5, q10
vmlal.u8 q11, d15, d29
addeq r1, r1, r8
vmlsl.u8 q11, d17, d30
cmp r14, #0
vmlsl.u8 q11, d19, d31
vqrshrun.s16 d10, q5, #6 ;right shift and saturating narrow
; result 2
beq epilog_16
vld1.u32 {q0}, [r12], r11 ;vector load pu1_src
mov r7, #0xc000
cmp r5, #0
vld1.u32 {q1}, [r12], r11
vhadd.s16 q11, q11, q10
vld1.u32 {q2}, [r12], r11
vdup.16 q4, r7
vmlsl.u8 q4, d0, d24 ;mul_res = vmlsl_u8(src[0_0],
; coeffabs_0);
vdup.16 q10, r7
vld1.u32 {q3}, [r12], r11
add r7, r6, #8
moveq r5, r10
vld1.u8 {d0}, [r6]
vmlsl.u8 q4, d2, d25 ;mul_res = vmlal_u8(src[0_1],
; coeffabs_1);
vld1.u8 {d2}, [r7]
vqrshrun.s16 d11, q11, #6
vmlal.u8 q4, d4, d26 ;mul_res = vmlsl_u8(src[0_2],
; coeffabs_2);
vld1.u32 {q6}, [r12], r11
vrhadd.u8 d10, d10, d0
vld1.u32 {q7}, [r12], r11
vrhadd.u8 d11, d11, d2
vld1.u32 {q8}, [r12], r11
vmlal.u8 q4, d6, d27 ;mul_res = vmull_u8(src[0_3],
; coeffabs_3);
vld1.u32 {q9}, [r12], r11
vmlal.u8 q4, d12, d28 ;mul_res = vmlal_u8(src[0_4],
; coeffabs_4);
vmlal.u8 q4, d14, d29 ;mul_res = vmlsl_u8(src[0_5],
; coeffabs_5);
mov r7, #0xc000
vmlsl.u8 q4, d16, d30 ;mul_res = vmlal_u8(src[0_6],
; coeffabs_6);
vst1.8 {q5}, [r6]! ;store the result pu1_dst
vmlsl.u8 q4, d18, d31 ;mul_res = vmlsl_u8(src[0_7],
; coeffabs_7);
addeq r6, r1, r3 ;pu1_dst + dst_strd
b inner_loop_16
epilog_16
mov r7, #0x4000
ldr r0, [sp], #4
ldr r10, [sp, #120]
vdup.16 q10, r7
vhadd.s16 q11, q11, q10
vqrshrun.s16 d11, q11, #6
add r7, r6, #8
vld1.u8 {d20}, [r6]
vld1.u8 {d21}, [r7]
vrhadd.u8 d10, d10, d20
vrhadd.u8 d11, d11, d21
vst1.8 {q5}, [r6]! ;store the result pu1_dst
ldr r7, [sp], #4
cmp r10, #24
beq outer_loop8_residual
end_loops1
b end_func
outer_loop4_residual
sub r12, r0, #3 ;pu1_src - 3
mov r1, r7
add r1, #8
mov r10, #4
add r12, #8
mov r14, #16
add r8, #4
add r9, #4
outer_loop_4
add r6, r1, r3 ;pu1_dst + dst_strd
add r4, r12, r2 ;pu1_src + src_strd
subs r5, r10, #0 ;checks wd
ble end_inner_loop_4
inner_loop_4
vld1.u32 {d0}, [r12], r11 ;vector load pu1_src
vld1.u32 {d1}, [r12], r11
vld1.u32 {d2}, [r12], r11
vld1.u32 {d3}, [r12], r11
vld1.u32 {d4}, [r12], r11
vld1.u32 {d5}, [r12], r11
vld1.u32 {d6}, [r12], r11
vld1.u32 {d7}, [r12], r11
sub r12, r12, #4
vld1.u32 {d12}, [r4], r11 ;vector load pu1_src + src_strd
vld1.u32 {d13}, [r4], r11
vzip.32 d0, d12 ;vector zip the i iteration and ii
; interation in single register
vld1.u32 {d14}, [r4], r11
vzip.32 d1, d13
vld1.u32 {d15}, [r4], r11
vzip.32 d2, d14
vld1.u32 {d16}, [r4], r11
vzip.32 d3, d15
vld1.u32 {d17}, [r4], r11
vzip.32 d4, d16
vld1.u32 {d18}, [r4], r11
vzip.32 d5, d17
vld1.u32 {d19}, [r4], r11
mov r7, #0xc000
vdup.16 q4, r7
sub r4, r4, #4
vzip.32 d6, d18
vzip.32 d7, d19
vmlsl.u8 q4, d1, d25 ;arithmetic operations for ii
; iteration in the same time
vmlsl.u8 q4, d0, d24
vmlal.u8 q4, d2, d26
vmlal.u8 q4, d3, d27
vmlal.u8 q4, d4, d28
vmlal.u8 q4, d5, d29
vmlsl.u8 q4, d6, d30
vmlsl.u8 q4, d7, d31
mov r7, #0x4000
vdup.16 q10, r7
vhadd.s16 q4, q4, q10
vqrshrun.s16 d8, q4, #6
vld1.u32 {d10[0]}, [r1]
vld1.u32 {d10[1]}, [r6]
vrhadd.u8 d8, d8, d10
vst1.32 {d8[0]},[r1]! ;store the i iteration result which
; is in upper part of the register
vst1.32 {d8[1]},[r6]! ;store the ii iteration result which
; is in lower part of the register
subs r5, r5, #4 ;decrement the wd by 4
bgt inner_loop_4
end_inner_loop_4
subs r14, r14, #2 ;decrement the ht by 4
add r12, r12, r9 ;increment the input pointer
; 2*src_strd-wd
add r1, r1, r8 ;increment the output pointer
; 2*dst_strd-wd
bgt outer_loop_4
end_func
vpop {d8 - d15}
ldmfd sp!, {r4 - r12, r15} ;reload the registers from sp
ENDP
END