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SymmColumnSmallVec_32s16s [-1, 0, 1]

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NEON speedup: 3.27x
Auto-vect speedup: 1.01x
This commit is contained in:
orestis 2014-12-19 22:37:52 +02:00
parent 99e782e62c
commit 4443d6b0a1
1 changed files with 17 additions and 1 deletions
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18
modules/imgproc/src/filter.cpp
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@ -2725,7 +2725,23 @@ struct SymmColumnSmallVec_32s16s
{ {
if( fabs(ky[1]) == 1 && ky[1] == -ky[-1] ) if( fabs(ky[1]) == 1 && ky[1] == -ky[-1] )
{ {
return 0; if( ky[1] < 0 )
std::swap(S0, S2);
for( ; i <= width - 4; i += 4 )
{
int32x4_t x0, x1;
x0 = vld1q_s32((int32_t const *)(S0 + i));
x1 = vld1q_s32((int32_t const *)(S2 + i));
int32x4_t y0, y1;
y0 = vsubq_s32(x1, x0);
y1 = vqaddq_s32(y0, d4);
int16x4_t t;
t = vqmovn_s32(y1);
vst1_s16((int16_t *)(dst + i), t);
}
} }
else else
{ {