[GCC front end] add new TREE CODE

[charfi asma]

Hello,

I am developping my own gcc front end. My source language contains concepts that 
are not represented directly in C code.
to compile those elements, I think that I should add a new tree codes to my 
front end as C++ does for templates...
I think that I should also implement how to translate this new tree code in 
Gimple.
my question is : should I also care about how to translate those tree code al 
over the compiler chain: gimple --> ssa --> unssa --> rtl --> ass ...
did you suggest to follow an example of an existing front end that adds some 
tree code cause the C++ one seems to be mature and complete.

thank you very much

Asma