We have open-sourced AutoFDO profile toolchain in: https://github.com/google/autofdo
For GCC developers, the most important tool is create_gcov, which converts sampling based profile to GCC-readable profile. Please refer to the readme file (https://raw.githubusercontent.com/google/autofdo/master/README) for more details. To use the profile, one need to checkout https://gcc.gnu.org/svn/gcc/branches/google/gcc-4_8. We are working on porting AutoFDO to trunk (http://gcc.gnu.org/ml/gcc-patches/2014-05/msg00438.html). We have limited doc inside the open-sourced package, and we are planning to add more content to the wiki page (https://github.com/google/autofdo/wiki). Feel free to send me emails or discuss on github if you have any questions. Cheers, Dehao
