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Add common lzcnt implementation.

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Not really tested, so fingers crossed.
This commit is contained in:
Bartosz Taudul 2021-06-09 20:29:43 +02:00
parent c61a7ef57b
commit 90b51568e9
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1 changed files with 16 additions and 0 deletions
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16
server/TracyPopcnt.hpp
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@ -2,15 +2,21 @@
#define __TRACYPOPCNT_HPP__
#include <limits.h>
#include <stdint.h>
#if defined _WIN64
# include <intrin.h>
# define TracyCountBits __popcnt64
# define TracyLzcnt __lzcnt64
#elif defined __GNUC__ || defined __clang__
static inline uint64_t TracyCountBits( uint64_t i )
{
return uint64_t( __builtin_popcountll( i ) );
}
static inline uint64_t TracyLzcnt( uint64_t i )
{
return uint64_t( __builtin_clzll( i ) );
}
#else
static inline uint64_t TracyCountBits( uint64_t i )
{
@ -19,6 +25,16 @@ static inline uint64_t TracyCountBits( uint64_t i )
i = ( (i + (i >> 4) ) & 0x0F0F0F0F0F0F0F0F );
return ( i * (0x0101010101010101) ) >> 56;
}
static inline uint64_t TracyLzcnt( uint64_t i )
{
i |= i >> 1;
i |= i >> 2;
i |= i >> 4;
i |= i >> 8;
i |= i >> 16;
i |= i >> 32;
return 64 - TracyCountBits( i );
}
#endif
#endif