ref: c0f71b4e9c3be54b964ac39022c084b49729de8c
dir: /vpx_dsp/arm/vpx_convolve_avg_neon_asm.asm/
;
; Copyright (c) 2013 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.
;
EXPORT |vpx_convolve_avg_neon|
ARM
REQUIRE8
PRESERVE8
AREA ||.text||, CODE, READONLY, ALIGN=2
|vpx_convolve_avg_neon| PROC
push {r4-r6, lr}
ldrd r4, r5, [sp, #36]
mov r6, r2
cmp r4, #32
bgt avg64
beq avg32
cmp r4, #8
bgt avg16
beq avg8
b avg4
avg64
sub lr, r1, #32
sub r4, r3, #32
avg64_h
pld [r0, r1, lsl #1]
vld1.8 {q0-q1}, [r0]!
vld1.8 {q2-q3}, [r0], lr
pld [r2, r3]
vld1.8 {q8-q9}, [r6@128]!
vld1.8 {q10-q11}, [r6@128], r4
vrhadd.u8 q0, q0, q8
vrhadd.u8 q1, q1, q9
vrhadd.u8 q2, q2, q10
vrhadd.u8 q3, q3, q11
vst1.8 {q0-q1}, [r2@128]!
vst1.8 {q2-q3}, [r2@128], r4
subs r5, r5, #1
bgt avg64_h
pop {r4-r6, pc}
avg32
vld1.8 {q0-q1}, [r0], r1
vld1.8 {q2-q3}, [r0], r1
vld1.8 {q8-q9}, [r6@128], r3
vld1.8 {q10-q11}, [r6@128], r3
pld [r0]
vrhadd.u8 q0, q0, q8
pld [r0, r1]
vrhadd.u8 q1, q1, q9
pld [r6]
vrhadd.u8 q2, q2, q10
pld [r6, r3]
vrhadd.u8 q3, q3, q11
vst1.8 {q0-q1}, [r2@128], r3
vst1.8 {q2-q3}, [r2@128], r3
subs r5, r5, #2
bgt avg32
pop {r4-r6, pc}
avg16
vld1.8 {q0}, [r0], r1
vld1.8 {q1}, [r0], r1
vld1.8 {q2}, [r6@128], r3
vld1.8 {q3}, [r6@128], r3
pld [r0]
pld [r0, r1]
vrhadd.u8 q0, q0, q2
pld [r6]
pld [r6, r3]
vrhadd.u8 q1, q1, q3
vst1.8 {q0}, [r2@128], r3
vst1.8 {q1}, [r2@128], r3
subs r5, r5, #2
bgt avg16
pop {r4-r6, pc}
avg8
vld1.8 {d0}, [r0], r1
vld1.8 {d1}, [r0], r1
vld1.8 {d2}, [r6@64], r3
vld1.8 {d3}, [r6@64], r3
pld [r0]
pld [r0, r1]
vrhadd.u8 q0, q0, q1
pld [r6]
pld [r6, r3]
vst1.8 {d0}, [r2@64], r3
vst1.8 {d1}, [r2@64], r3
subs r5, r5, #2
bgt avg8
pop {r4-r6, pc}
avg4
vld1.32 {d0[0]}, [r0], r1
vld1.32 {d0[1]}, [r0], r1
vld1.32 {d2[0]}, [r6@32], r3
vld1.32 {d2[1]}, [r6@32], r3
vrhadd.u8 d0, d0, d2
vst1.32 {d0[0]}, [r2@32], r3
vst1.32 {d0[1]}, [r2@32], r3
subs r5, r5, #2
bgt avg4
pop {r4-r6, pc}
ENDP
END