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Merge "Fixed iwalsh_neon build problems with RVDS4.1"

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Johann 2011-05-20 07:51:11 -07:00 committed by Code Review
commit 6d82d2d22e
1 changed files with 23 additions and 39 deletions
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62
vp8/common/arm/neon/iwalsh_neon.asm
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@ -20,19 +20,16 @@
|vp8_short_inv_walsh4x4_neon| PROC
; read in all four lines of values: d0->d3
vldm.64 r0, {q0, q1}
vld1.i16 {q0-q1}, [r0@128]
; first for loop
vadd.s16 d4, d0, d3 ;a = [0] + [12]
vadd.s16 d5, d1, d2 ;b = [4] + [8]
vsub.s16 d6, d1, d2 ;c = [4] - [8]
vsub.s16 d7, d0, d3 ;d = [0] - [12]
vadd.s16 d6, d1, d2 ;b = [4] + [8]
vsub.s16 d5, d0, d3 ;d = [0] - [12]
vsub.s16 d7, d1, d2 ;c = [4] - [8]
vadd.s16 d0, d4, d5 ;a + b
vadd.s16 d1, d6, d7 ;c + d
vsub.s16 d2, d4, d5 ;a - b
vsub.s16 d3, d7, d6 ;d - c
vadd.s16 q0, q2, q3 ; a+b d+c
vsub.s16 q1, q2, q3 ; a-b d-c
vtrn.32 d0, d2 ;d0: 0 1 8 9
;d2: 2 3 10 11
@ -47,29 +44,22 @@
; second for loop
vadd.s16 d4, d0, d3 ;a = [0] + [3]
vadd.s16 d5, d1, d2 ;b = [1] + [2]
vsub.s16 d6, d1, d2 ;c = [1] - [2]
vsub.s16 d7, d0, d3 ;d = [0] - [3]
vadd.s16 d6, d1, d2 ;b = [1] + [2]
vsub.s16 d5, d0, d3 ;d = [0] - [3]
vsub.s16 d7, d1, d2 ;c = [1] - [2]
vadd.s16 d0, d4, d5 ;e = a + b
vadd.s16 d1, d6, d7 ;f = c + d
vsub.s16 d2, d4, d5 ;g = a - b
vsub.s16 d3, d7, d6 ;h = d - c
vmov.i16 q8, #3
vmov.i16 q2, #3
vadd.i16 q0, q0, q2 ;e/f += 3
vadd.i16 q1, q1, q2 ;g/h += 3
vadd.s16 q0, q2, q3 ; a+b d+c
vsub.s16 q1, q2, q3 ; a-b d-c
vadd.i16 q0, q0, q8 ;e/f += 3
vadd.i16 q1, q1, q8 ;g/h += 3
vshr.s16 q0, q0, #3 ;e/f >> 3
vshr.s16 q1, q1, #3 ;g/h >> 3
vtrn.32 d0, d2
vtrn.32 d1, d3
vtrn.16 d0, d1
vtrn.16 d2, d3
vstmia.16 r1!, {q0}
vstmia.16 r1!, {q1}
vst4.i16 {d0,d1,d2,d3}, [r1@128]
bx lr
ENDP ; |vp8_short_inv_walsh4x4_neon|
@ -77,19 +67,13 @@
;short vp8_short_inv_walsh4x4_1_neon(short *input, short *output)
|vp8_short_inv_walsh4x4_1_neon| PROC
; load a full line into a neon register
vld1.16 {q0}, [r0]
; extract first element and replicate
vdup.16 q1, d0[0]
; add 3 to all values
vmov.i16 q2, #3
vadd.i16 q3, q1, q2
; right shift
vshr.s16 q3, q3, #3
; write it back
vstmia.16 r1!, {q3}
vstmia.16 r1!, {q3}
ldrsh r2, [r0] ; load input[0]
add r3, r2, #3 ; add 3
add r2, r1, #16 ; base for last 8 output
asr r0, r3, #3 ; right shift 3
vdup.16 q0, r0 ; load and duplicate
vst1.16 {q0}, [r1@128] ; write back 8
vst1.16 {q0}, [r2@128] ; write back last 8
bx lr
ENDP ; |vp8_short_inv_walsh4x4_1_neon|