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Optimize cpuid

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Nekotekina 2017-11-09 20:33:18 +03:00
parent 9bc0ec586a
commit 916851bd4a
2 changed files with 23 additions and 14 deletions
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16
Utilities/sysinfo.h
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@ -16,21 +16,11 @@ namespace utils
return {0u+regs[0], 0u+regs[1], 0u+regs[2], 0u+regs[3]};
}
inline bool has_ssse3()
{
return get_cpuid(0, 0)[0] >= 0x1 && get_cpuid(1, 0)[2] & 0x200;
}
bool has_ssse3();
inline bool has_avx()
{
return get_cpuid(0, 0)[0] >= 0x1 && get_cpuid(1, 0)[2] & 0x10000000;
}
bool has_avx();
inline bool has_rtm()
{
// Check RTM and MPX extensions in order to filter out TSX on Haswell CPUs
return get_cpuid(0, 0)[0] >= 0x7 && (get_cpuid(7, 0)[1] & 0x4800) == 0x4800;
}
bool has_rtm();
inline bool transaction_enter()
{