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missing-intel-intrinsics.h
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1#ifndef MISSING_INTEL_INTRINSICS_H_
2#define MISSING_INTEL_INTRINSICS_H_
3
4#include <immintrin.h>
5
6// Old Visual Studio headers lack the bsrli variant
7#ifndef _mm_bsrli_si128
8 #define _mm_bsrli_si128(a, imm8) _mm_srli_si128((a), (imm8))
9#endif
10
11// GCC headers apparently won't have this at all.. sigh
12#ifndef _andn_u32
13 // VS2015 headers apparently won't have this at all.. sigh
14 #ifdef __andn_u32
15 #define _andn_u32(x, y) (__andn_u32((x), (y)))
16 #else
17 #define _andn_u32(x, y) ((~(x)) & (y))
18 #endif // __andn_u32
19#endif // _andn_u32
20
21// Some Visual Studio headers apparently lack these pseudoinstructions
22#if COMPILE_INTEL_AVX2
23 #ifndef _mm256_bsrli_epi128
24 #define _mm256_bsrli_epi128(a, imm8) _mm256_srli_si256((a), (imm8))
25 #endif
26 #ifndef _mm256_insert_epi32
27 #define _mm256_insert_epi32(a, i, index) (_mm256_blend_epi32((a), _mm256_set1_epi32(i), (1 << (index))))
28 #endif
29
30 #ifndef _mm256_extract_epi32
31 #define _mm256_extract_epi32(a, index) (_mm_extract_epi32(_mm256_extracti128_si256((a), (index) >> 2), (index) & 3))
32 #endif
33#endif
34
35#endif