How to rebuild GCC?

Hi, I am beginner in GCC. I want to make few changes in source code. What are the steps that I need to do to get the changes in effect and to test the changes? Any help is appreciated. Thanks and Regards Jaishri

how to use testsuite to check vectorization capabilities

Hello all, I am studying vectorization in GCC. I want to run the test cases given in gcc/gcc/testsuite/gcc.dg/vect Any pointer will be of great help for me. Thanks in advance Jaishri