Update convert pass for dynamic shape

src/include/migraphx/op/convert.hpp

@@ -52,7 +52,15 @@ struct convert : unary<convert>
     shape compute_shape(std::vector<shape> inputs) const
     {
         check_shapes{inputs, *this}.has(1);
-        return {target_type, inputs.at(0).lens(), inputs.at(0).strides()};
+        auto input = inputs.at(0);
+        if(input.dynamic())
+        {
+            return {target_type, input.dyn_dims()};
+        }
+        else
+        {
+            return {target_type, input.lens(), input.strides()};
+        }
     }
 
     std::string point_op() const