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arm: vp9itxfm: Reorder iadst16 coeffs

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This matches the order they are in the 16 bpp version.

There they are in this order, to make sure we access them in the
same order they are declared, easing loading only half of the
coefficients at a time.

This makes the 8 bpp version match the 16 bpp version better.

This is cherrypicked from libav commit
08074c092d8c97d71c5986e5325e97ffc956119d.

Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Martin Storsjö 2016-12-31 22:27:13 +02:00
parent f952273019
commit b2e20d8984
1 changed files with 6 additions and 6 deletions
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12
libavcodec/arm/vp9itxfm_neon.S
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@ -37,8 +37,8 @@ idct_coeffs:
endconst
const iadst16_coeffs, align=4
.short 16364, 804, 15893, 3981, 14811, 7005, 13160, 9760
.short 11003, 12140, 8423, 14053, 5520, 15426, 2404, 16207
.short 16364, 804, 15893, 3981, 11003, 12140, 8423, 14053
.short 14811, 7005, 13160, 9760, 5520, 15426, 2404, 16207
endconst
@ Do four 4x4 transposes, using q registers for the subtransposes that don't
@ -678,19 +678,19 @@ function iadst16
vld1.16 {q0-q1}, [r12,:128]
mbutterfly_l q3, q2, d31, d16, d0[1], d0[0] @ q3 = t1, q2 = t0
mbutterfly_l q5, q4, d23, d24, d2[1], d2[0] @ q5 = t9, q4 = t8
mbutterfly_l q5, q4, d23, d24, d1[1], d1[0] @ q5 = t9, q4 = t8
butterfly_n d31, d24, q3, q5, q6, q5 @ d31 = t1a, d24 = t9a
mbutterfly_l q7, q6, d29, d18, d0[3], d0[2] @ q7 = t3, q6 = t2
butterfly_n d16, d23, q2, q4, q3, q4 @ d16 = t0a, d23 = t8a
mbutterfly_l q3, q2, d21, d26, d2[3], d2[2] @ q3 = t11, q2 = t10
mbutterfly_l q3, q2, d21, d26, d1[3], d1[2] @ q3 = t11, q2 = t10
butterfly_n d29, d26, q7, q3, q4, q3 @ d29 = t3a, d26 = t11a
mbutterfly_l q5, q4, d27, d20, d1[1], d1[0] @ q5 = t5, q4 = t4
mbutterfly_l q5, q4, d27, d20, d2[1], d2[0] @ q5 = t5, q4 = t4
butterfly_n d18, d21, q6, q2, q3, q2 @ d18 = t2a, d21 = t10a
mbutterfly_l q7, q6, d19, d28, d3[1], d3[0] @ q7 = t13, q6 = t12
butterfly_n d20, d28, q5, q7, q2, q7 @ d20 = t5a, d28 = t13a
mbutterfly_l q3, q2, d25, d22, d1[3], d1[2] @ q3 = t7, q2 = t6
mbutterfly_l q3, q2, d25, d22, d2[3], d2[2] @ q3 = t7, q2 = t6
butterfly_n d27, d19, q4, q6, q5, q6 @ d27 = t4a, d19 = t12a
mbutterfly_l q5, q4, d17, d30, d3[3], d3[2] @ q5 = t15, q4 = t14