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Merge pull request #188 from gjaegy/master
fix crash on CPU not having AVX support
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commit
473c2d43bf
@ -55,10 +55,16 @@ public:
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{
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int cpuInfo[4];
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memset(cpuInfo, 0, sizeof(cpuInfo));
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unsigned long long sseExt;
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unsigned long long sseExt = 0;
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__cpuid(cpuInfo, 1);
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sseExt = _xgetbv(0);
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bool osUsesXSAVE_XRSTORE = cpuInfo[2] & (1 << 27) || false;
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bool cpuAVXSuport = cpuInfo[2] & (1 << 28) || false;
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if (osUsesXSAVE_XRSTORE && cpuAVXSuport)
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{
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sseExt = _xgetbv(0);
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}
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const int OSXSAVEFlag = (1UL << 27);
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const int AVXFlag = ((1UL << 28) | OSXSAVEFlag);
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const int FMAFlag = ((1UL << 12) | AVXFlag | OSXSAVEFlag);
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