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[checksum] more cleanup and optimization

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* Why... can't I stop... trying to optimize... this thing?!?
This commit is contained in:
Pete Batard 2016-03-02 13:40:37 +00:00
parent b89beceedf
commit 07114edc6f
3 changed files with 45 additions and 45 deletions
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17
src/missing.h
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@ -35,6 +35,23 @@
#define MIN(a,b) (((a) < (b)) ? (a) : (b))
#endif
#if defined(__GNUC__)
#define ALIGNED(m) __attribute__ ((__aligned__(m)))
#elif defined(_MSC_VER)
#define ALIGNED(m) __declspec(align(m))
#endif
/*
* Prefetch 64 bytes at address m, for read-only operation
* We account for these built-in calls doing nothing if the
* line has already been fetched, or if the address is invalid.
*/
#if defined(__GNUC__)
#define PREFETCH64(m) do { __builtin_prefetch(m, 0, 0); __builtin_prefetch(m+32, 0, 0); } while(0)
#elif defined(_MSC_VER)
#define PREFETCH64(m) do { _m_prefetch(m); _m_prefetch(m+32); } while(0)
#endif
#if defined(_MSC_VER)
#define bswap_uint64 _byteswap_uint64
#define bswap_uint32 _byteswap_ulong