[Bug gcov-profile/86957] gcc should warn about missing profiles for a compilation unit or a new function with -fprofile-use

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86957

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
I wonder if for assessing the quality of a profile it is somehow possible to
dump
all functions that got never executed during training?  Because all those
functions will be optimized as cold by GCC AFAIK.