add a op support

thirdparty/RTL2CDFG/v2cdfg/src/ast2cdfg.py

@@ -476,8 +476,9 @@ class DFGExtractor(AnynodeVisitor):
             if node.parent.name == "FalseBlock":
                 tlabel = 3
             self.add_edge(self.node_dict[node.name],self.node_dict[self.conditions[0]], label = tlabel)
-        if node.name.startswith("Cond_If"):
-            assert False,"Exist if in design!"
+        # (zhengyang) temp removal
+        # if node.name.startswith("Cond_If"):
+        #     assert False,"Exist if in design!"
             self.if_scope = "If"
         self.conditions.insert(0,node.name)
         self.ast_branch = node.name