Support constant folding for reshape and broadcast bf16 data (#2823)

* Support constant folding for reshape and broadcast bf16 data

* - Addressed PR feedback
- Adding extra paranthesis for icc

src/ngraph/dimension.hpp

@@ -124,7 +124,7 @@ namespace ngraph
         /// \return A dynamic dimension.
         static Dimension dynamic() { return Dimension(); }
         /// \brief Constant for the value used internally to represent a dynamic dimension.
-        static const size_t s_dynamic_val{std::numeric_limits<size_t>::max()};
+        static const size_t s_dynamic_val{(std::numeric_limits<size_t>::max())};
 
         /// \brief Addition operator for Dimension.
         /// \param dim Right operand for addition.

src/ngraph/pass/constant_folding.cpp

@@ -234,6 +234,13 @@ void pass::ConstantFolding::construct_constant_reshape()
                          fold_constant_reshape<double>(constant_match, reshape_match, func));
             return true;
         }
+        else if (type == element::bf16)
+        {
+            replace_node(
+                m.get_match_root(),
+                fold_constant_reshape<ngraph::bfloat16>(constant_match, reshape_match, func));
+            return true;
+        }
 
         return false;
     };
@@ -322,6 +329,13 @@ void pass::ConstantFolding::construct_constant_broadcast()
                          fold_constant_broadcast<double>(constant_match, broadcast_match, func));
             return true;
         }
+        else if (type == element::bf16)
+        {
+            replace_node(
+                m.get_match_root(),
+                fold_constant_broadcast<ngraph::bfloat16>(constant_match, broadcast_match, func));
+            return true;
+        }
 
         return false;
     };