Can we see the template instantiated code by C++ compiler

Question

is there a way to know the compiler instantiated code for a template function or a class in C++

Assume I have the following piece of code

template &l         


        

Answer 1

If you want to see the assembly output, use this:

g++ -S file.cpp

If you want to see some (pseudo) C++ code that GCC generates, you can use this:

g++ -fdump-tree-original file.cpp

For your add function, this will output something like

;; Function T add(const T&, const T&) [with T = int] (null)
;; enabled by -tree-original

return  = (int) *l + (int) *r;

(I passed the parameters by reference to make the output a little more interesting)