add some CPUFeatures check

Author: Xor-el

HashLib/src/Utils/HlpCpuFeatures.pas

@@ -25,6 +25,9 @@   TCpuFeatures = class sealed
     class function HasSHANI(): Boolean; static;
     class function HasPCLMULQDQ(): Boolean; static;
     class function HasVPCLMULQDQ(): Boolean; static;
+    class function HasSSE2(): Boolean; static;
+    class function HasSSSE3(): Boolean; static;
+    class function HasAVX2(): Boolean; static;
   end;
 
 implementation
@@ -216,6 +219,21 @@ class function TCpuFeatures.HasVPCLMULQDQ(): Boolean;
   Result := FHasVPCLMULQDQ;
 end;
 
+class function TCpuFeatures.HasSSE2(): Boolean;
+begin
+  Result := Ord(FDetectedLevel) >= Ord(TCpuSimdLevel.SSE2);
+end;
+
+class function TCpuFeatures.HasSSSE3(): Boolean;
+begin
+  Result := Ord(FDetectedLevel) >= Ord(TCpuSimdLevel.SSSE3);
+end;
+
+class function TCpuFeatures.HasAVX2(): Boolean;
+begin
+  Result := FDetectedLevel = TCpuSimdLevel.AVX2;
+end;
+
 initialization
   TCpuFeatures.DetectFeatures();