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common/cpu_detect: Add AVX512 detection

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Morph 2020-05-16 07:24:57 -04:00
parent 7d1dca4c98
commit d6474b4aca
2 changed files with 6 additions and 0 deletions
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5
src/common/x64/cpu_detect.cpp
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@ -110,6 +110,11 @@ static CPUCaps Detect() {
caps.bmi1 = true; caps.bmi1 = true;
if ((cpu_id[1] >> 8) & 1) if ((cpu_id[1] >> 8) & 1)
caps.bmi2 = true; caps.bmi2 = true;
// Checks for AVX512F, AVX512CD, AVX512VL, AVX512DQ, AVX512BW (Intel Skylake-X/SP)
if ((cpu_id[1] >> 16) & 1 && (cpu_id[1] >> 28) & 1 && (cpu_id[1] >> 31) & 1 &&
(cpu_id[1] >> 17) & 1 && (cpu_id[1] >> 30) & 1) {
caps.avx512 = caps.avx2;
}
} }
} }

1
src/common/x64/cpu_detect.h
View file

@ -19,6 +19,7 @@ struct CPUCaps {
bool lzcnt; bool lzcnt;
bool avx; bool avx;
bool avx2; bool avx2;
bool avx512;
bool bmi1; bool bmi1;
bool bmi2; bool bmi2;
bool fma; bool fma;