code: def has_xor(self):
          
  
          def _has_xor(expr):
              return isinstance(expr, pyvex.IRExpr.Binop) and expr.op.startswith("Iop_Xor")
  
          found_xor = False
  
          for block in self._function.blocks:
              if block.size == 0:
                  continue
              for stmt in block.vex.statements:
                  if isinstance(stmt, pyvex.IRStmt.Put):
                      found_xor = found_xor or _has_xor(stmt.data)
                  elif isinstance(stmt, pyvex.IRStmt.WrTmp):
                      found_xor = found_xor or _has_xor(stmt.data)
              if found_xor:
                  break
  
          if found_xor:
              return { CodeTags.HAS_XOR }
          return None
docs: Detects if there is any xor operation in the function.
  
          :return: Tags