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CPUDetect: Indicate slow PDEP/PEXT only for Zen1/+/2 (Family 23)
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2acd3abe35
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2 changed files with 5 additions and 6 deletions
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@ -118,9 +118,9 @@ void CPUInfo::Detect()
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(model == 0x1C || model == 0x26 || model == 0x27 || model == 0x35 || model == 0x36 ||
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model == 0x37 || model == 0x4A || model == 0x4D || model == 0x5A || model == 0x5D))
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bAtom = true;
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// Detect AMD Zen (all models)
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// Detect AMD Zen1, Zen1+ and Zen2
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if (family == 23)
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bZen = true;
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bZen1p2 = true;
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logical_cpu_count = (cpu_id[1] >> 16) & 0xFF;
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ht = (cpu_id[3] >> 28) & 1;
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@ -175,7 +175,7 @@ void CPUInfo::Detect()
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}
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bFlushToZero = bSSE;
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bFastBMI2 = bBMI2 && !bZen;
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bFastBMI2 = bBMI2 && !bZen1p2;
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if (max_ex_fn >= 0x80000004)
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{
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