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蓝山帝景
我创建了一个GitHub repro,它将检测所有主要x86 ISA扩展的CPU和操作系统支持:https : //github.com/Mysticial/FeatureDetector这是一个简短的版本:首先,您需要访问CPUID指令:#ifdef _WIN32// Windows#define cpuid(info, x) __cpuidex(info, x, 0)#else// GCC Intrinsics#include void cpuid(int info[4], int InfoType){ __cpuid_count(InfoType, 0, info[0], info[1], info[2], info[3]);}#endif然后,您可以运行以下代码:// Misc.bool HW_MMX;bool HW_x64;bool HW_ABM; // Advanced Bit Manipulationbool HW_RDRAND;bool HW_BMI1;bool HW_BMI2;bool HW_ADX;bool HW_PREFETCHWT1;// SIMD: 128-bitbool HW_SSE;bool HW_SSE2;bool HW_SSE3;bool HW_SSSE3;bool HW_SSE41;bool HW_SSE42;bool HW_SSE4a;bool HW_AES;bool HW_SHA;// SIMD: 256-bitbool HW_AVX;bool HW_XOP;bool HW_FMA3;bool HW_FMA4;bool HW_AVX2;// SIMD: 512-bitbool HW_AVX512F; // AVX512 Foundationbool HW_AVX512CD; // AVX512 Conflict Detectionbool HW_AVX512PF; // AVX512 Prefetchbool HW_AVX512ER; // AVX512 Exponential + Reciprocalbool HW_AVX512VL; // AVX512 Vector Length Extensionsbool HW_AVX512BW; // AVX512 Byte + Wordbool HW_AVX512DQ; // AVX512 Doubleword + Quadwordbool HW_AVX512IFMA; // AVX512 Integer 52-bit Fused Multiply-Addbool HW_AVX512VBMI; // AVX512 Vector Byte Manipulation Instructionsint info[4];cpuid(info, 0);int nIds = info[0];cpuid(info, 0x80000000);unsigned nExIds = info[0];// Detect Featuresif (nIds >= 0x00000001){ cpuid(info,0x00000001); HW_MMX = (info[3] & ((int)1 |