On 12-05-26 04:46 , Serg Anohovsky wrote:
It would be nice, if you suggest me good theme or give me the area where I could find it.
You can find GCC's VRP implementation in the file gcc/tree-vrp.c in the source repository http://gcc.gnu.org/viewcvs/trunk/gcc/tree-vrp.c?view=markup
The file has links to documentation and articles where it was originally implemented from (though it has changed substantially since its original implementation).
If you are interested in projects other than VRP, you can visit our getting started page: http://gcc.gnu.org/wiki/GettingStarted
Diego.