[Bug c++/110380] [feature request] "-pg-constexpr=coverage-output" emit coverage metrics for constexpr code evaluated at compile time

[gasper.azman at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110380

--- Comment #2 from Gašper Ažman <gasper.azman at gmail dot com> ---
-fprofile-constexpr is perfectly fine :), as long as it gets a filename
argument for the output; build automation will be thankful.