[Bug c++/69564] lto and/or C++ make scimark2 LU slower

[vincenzo.innocente at cern dot ch]

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"