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KawPow: fixed crash on old CPUs

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- Use `popcnt` instruction only when it's supported
This commit is contained in:
SChernykh 2020-06-10 21:49:43 +02:00
parent e4c8714daa
commit dc0aee1432
3 changed files with 27 additions and 3 deletions
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2
src/backend/cpu/platform/BasicCpuInfo.cpp
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@ -142,6 +142,7 @@ static inline bool has_pdpe1gb() { return has_feature(PROCESSOR_EXT_INFO,
static inline bool has_sse2() { return has_feature(PROCESSOR_INFO, EDX_Reg, 1 << 26); }
static inline bool has_ssse3() { return has_feature(PROCESSOR_INFO, ECX_Reg, 1 << 9); }
static inline bool has_xop() { return has_feature(0x80000001, ECX_Reg, 1 << 11); }
static inline bool has_popcnt() { return has_feature(PROCESSOR_INFO, ECX_Reg, 1 << 23); }
} // namespace xmrig
@ -176,6 +177,7 @@ xmrig::BasicCpuInfo::BasicCpuInfo() :
m_flags.set(FLAG_SSE2, has_sse2());
m_flags.set(FLAG_SSSE3, has_ssse3());
m_flags.set(FLAG_XOP, has_xop());
m_flags.set(FLAG_POPCNT, has_popcnt());
# ifdef XMRIG_FEATURE_ASM
if (hasAES()) {