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Change 16-bit swizzle from vector to C arrays #190

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Mar 27, 2025
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Change 16-bit swizzle from vector to C arrays #190

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16 changes: 8 additions & 8 deletions src/avx512-16bit-common.h
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Original file line number Diff line number Diff line change
Expand Up @@ -14,11 +14,11 @@ struct avx512_16bit_swizzle_ops {
__m512i v = vtype::cast_to(reg);

if constexpr (scale == 2) {
std::vector<uint16_t> arr
constexpr static uint16_t arr[]
= {1, 0, 3, 2, 5, 4, 7, 6, 9, 8, 11,
10, 13, 12, 15, 14, 17, 16, 19, 18, 21, 20,
23, 22, 25, 24, 27, 26, 29, 28, 31, 30};
__m512i mask = _mm512_loadu_si512(arr.data());
__m512i mask = _mm512_loadu_si512(arr);
v = _mm512_permutexvar_epi16(mask, v);
}
else if constexpr (scale == 4) {
Expand Down Expand Up @@ -48,27 +48,27 @@ struct avx512_16bit_swizzle_ops {

if constexpr (scale == 2) { return swap_n<vtype, 2>(reg); }
else if constexpr (scale == 4) {
std::vector<uint16_t> arr
constexpr static uint16_t arr[]
= {3, 2, 1, 0, 7, 6, 5, 4, 11, 10, 9,
8, 15, 14, 13, 12, 19, 18, 17, 16, 23, 22,
21, 20, 27, 26, 25, 24, 31, 30, 29, 28};
__m512i mask = _mm512_loadu_si512(arr.data());
__m512i mask = _mm512_loadu_si512(arr);
v = _mm512_permutexvar_epi16(mask, v);
}
else if constexpr (scale == 8) {
std::vector<uint16_t> arr
constexpr static int16_t arr[]
= {7, 6, 5, 4, 3, 2, 1, 0, 15, 14, 13,
12, 11, 10, 9, 8, 23, 22, 21, 20, 19, 18,
17, 16, 31, 30, 29, 28, 27, 26, 25, 24};
__m512i mask = _mm512_loadu_si512(arr.data());
__m512i mask = _mm512_loadu_si512(arr);
v = _mm512_permutexvar_epi16(mask, v);
}
else if constexpr (scale == 16) {
std::vector<uint16_t> arr
constexpr static uint16_t arr[]
= {15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5,
4, 3, 2, 1, 0, 31, 30, 29, 28, 27, 26,
25, 24, 23, 22, 21, 20, 19, 18, 17, 16};
__m512i mask = _mm512_loadu_si512(arr.data());
__m512i mask = _mm512_loadu_si512(arr);
v = _mm512_permutexvar_epi16(mask, v);
}
else if constexpr (scale == 32) {
Expand Down