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fix check avx use xgetbv problem

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This commit is contained in:
chaser-ch
2024-04-30 08:28:31 +00:00
committed by ob-robot
parent b119e2ccda
commit 037155cd19
1 changed files with 13 additions and 1 deletions
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14
deps/oblib/src/lib/cpu/ob_cpu_topology.h vendored
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@ -41,12 +41,24 @@ inline uint64_t our_xgetbv(uint32_t xcr) noexcept
return (static_cast<uint64_t>(edx) << 32) | eax;
}
#endif
inline bool haveOSXSAVE();
inline bool have_sse42();
inline bool have_avx();
inline bool have_avx2();
inline bool have_avxf();
inline bool have_avx512bw();
inline bool haveOSXSAVE()
{
#if defined(__x86_64__)
int regs[4];
get_cpuid(regs, 0x1);
return (regs[2] >> 27) & 1u;
#else
return false;
#endif
}
inline bool have_sse42()
{
#if defined(__x86_64__)
@ -62,7 +74,7 @@ inline bool have_avx()
#if defined(__x86_64__)
int regs[4];
get_cpuid(regs, 0x1);
return ((our_xgetbv(0) & 6u) == 6u) && (regs[2] >> 28 & 1);
return haveOSXSAVE() && ((our_xgetbv(0) & 6u) == 6u) && (regs[2] >> 28 & 1);
#else
return false;
#endif