change to generic op

src/tf/tf.cpp

@@ -108,6 +108,7 @@ struct tf_parser
     {
         add_generic_op("Identity", op::identity{});
         add_generic_op("Relu", op::relu{});
+        add_generic_op("Relu6", op::clip{6.0, 0.0});
 
         add_binary_op("Add", op::add{});
         add_binary_op("Mul", op::mul{});
@@ -123,7 +124,6 @@ struct tf_parser
         add_mem_op("Mean", &tf_parser::parse_mean);
         add_mem_op("Pack", &tf_parser::parse_pack);
         add_mem_op("Pad", &tf_parser::parse_pad);
-        add_mem_op("Relu6", &tf_parser::parse_relu6);
         add_mem_op("Reshape", &tf_parser::parse_reshape);
         add_mem_op("Softmax", &tf_parser::parse_softmax);
         add_mem_op("Squeeze", &tf_parser::parse_squeeze);
@@ -483,15 +483,6 @@ struct tf_parser
         return prog.add_instruction(op, args[0]);
     }
 
-    instruction_ref
-    parse_relu6(const std::string&, const attribute_map&, std::vector<instruction_ref> args)
-    {
-        op::clip op;
-        op.max_val = 6.0;
-        op.min_val = 0.0;
-        return prog.add_instruction(op, std::move(args));
-    }
-
     instruction_ref
     parse_reshape(const std::string&, const attribute_map&, std::vector<instruction_ref> args)
     {