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SymmColumnSmallVec_32s16s [1, -2, 1]

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NEON speedup: 2.75x
Auto-vect speedup: 1.01x
This commit is contained in:
orestis 2014-12-19 22:34:11 +02:00
parent 4f906372e2
commit 61a7f48bf4
1 changed files with 18 additions and 1 deletions
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19
modules/imgproc/src/filter.cpp
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@ -2651,7 +2651,24 @@ struct SymmColumnSmallVec_32s16s
}
else if( ky[0] == -2 && ky[1] == 1 )
{
return 0;
for( ; i <= width - 4; i += 4 )
{
int32x4_t x0, x1, x2;
x0 = vld1q_s32((int32_t const *)(S0 + i));
x1 = vld1q_s32((int32_t const *)(S1 + i));
x2 = vld1q_s32((int32_t const *)(S2 + i));
int32x4_t y0, y1, y2, y3;
y0 = vaddq_s32(x0, x2);
y1 = vqshlq_n_s32(x1, 1);
y2 = vsubq_s32(y0, y1);
y3 = vaddq_s32(y2, d4);
int16x4_t t;
t = vqmovn_s32(y3);
vst1_s16((int16_t *)(dst + i), t);
}
}
else if( ky[0] == 10 && ky[1] == 3 )
{