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added vshuf()

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This commit is contained in:
Ahmet Inan 2021-06-21 08:18:15 +02:00
commit 778d51ac0f
4 changed files with 160 additions and 0 deletions
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22
neon.hh
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@ -938,3 +938,25 @@ inline SIMD<int32_t, 4> vclamp(SIMD<int32_t, 4> x, int32_t a, int32_t b)
return tmp;
}
template <>
inline SIMD<uint8_t, 16> vshuf(SIMD<uint8_t, 16> a, SIMD<uint8_t, 16> b)
{
SIMD<uint8_t, 16> tmp;
uint8x8x2_t c { vget_low_u8(a.m), vget_high_u8(a.m) };
uint8x8_t d = vtbl2_u8(c, vget_low_u8(b.m));
uint8x8_t e = vtbl2_u8(c, vget_high_u8(b.m));
tmp.m = vcombine_u8(d, e);
return tmp;
}
template <>
inline SIMD<int8_t, 16> vshuf(SIMD<int8_t, 16> a, SIMD<uint8_t, 16> b)
{
SIMD<int8_t, 16> tmp;
int8x8x2_t c { vget_low_s8(a.m), vget_high_s8(a.m) };
int8x8_t d = vtbl2_s8(c, vget_low_s8((int8x16_t)b.m));
int8x8_t e = vtbl2_s8(c, vget_high_s8((int8x16_t)b.m));
tmp.m = vcombine_s8(d, e);
return tmp;
}