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Improved consistency of CPU dispatching code

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This commit is contained in:
Andrew Kane
2024-04-18 14:13:12 -07:00
parent fb3c964ac2
commit 4e093f95be
3 changed files with 17 additions and 19 deletions
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13
src/bitutils.h
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@@ -2,19 +2,24 @@
#define BITUTILS_H
/* Only enable for more recent compilers */
/* TODO Move to better place */
#if defined(__x86_64__) && defined(__GNUC__) && __GNUC__ >= 8
#define BIT_DISPATCH
#define USE_DISPATCH
#elif defined(__x86_64__) && defined(__clang_major__) && __clang_major__ >= 7
#define BIT_DISPATCH
#define USE_DISPATCH
#elif defined(_M_AMD64) && defined(_MSC_VER) && _MSC_VER >= 1920
#define BIT_DISPATCH
#define USE_DISPATCH
#endif
/* target_clones requires glibc */
#if defined(BIT_DISPATCH) && defined(__gnu_linux__)
#if defined(USE_DISPATCH) && defined(__gnu_linux__)
#define USE_TARGET_CLONES
#endif
#if defined(USE_DISPATCH)
#define BIT_DISPATCH
#endif
extern uint64 (*BitHammingDistance) (uint32 bytes, unsigned char *ax, unsigned char *bx, uint64 distance);
extern double (*BitJaccardDistance) (uint32 bytes, unsigned char *ax, unsigned char *bx, uint64 ab, uint64 aa, uint64 bb);