https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69564
--- Comment #3 from vincenzo Innocente <vincenzo.innocente at cern dot ch> --- > Any reason you are using the c++ driver here? Because I am interested in C++ performance never imagined that the c++ front-end could make a difference on such a code... >From my point of view it is even a more severe regression than just "lto"