Init 2.2

CpuCheckNative/PopcntCheck.cpp

@@ -0,0 +1,20 @@
+#include "pch.h"
+#include <intrin.h>
+
+extern "C" __declspec(dllexport) bool __cdecl HasPopcnt()
+{
+    int cpuInfo[4] = { 0 };
+
+    // Get CPU info by calling __cpuid, which fills the cpuInfo array with CPU feature flags
+    __cpuid(cpuInfo, 1);
+
+    // Check if the processor supports SSE4.2 (bit 20 of the ECX register)
+    bool hasSSE42 = (cpuInfo[2] & (1 << 20)) != 0;
+
+    // Check if the processor supports POPCNT (bit 23 of the ECX register)
+    bool hasPOPCNT = (cpuInfo[2] & (1 << 23)) != 0;
+
+    // POPCNT is the critical instruction for Windows 11 upgrade compatibility!!
+    // If both SSE4.2 and POPCNT are supported, yeah we can return true; otherwise, false 
+    return hasSSE42 && hasPOPCNT;
+}