https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112829
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Severity|normal |enhancement
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
GCC does not currently have a way. Though I suspect one of the reasons is that
for embedded, folks don't use -fprofile-generate/-fprofile-use that much or
they use a simulator which then has direct access to the host machine to
generate the files.
I Know for Octeon SE (MIPS baremetal interface on the Cavium Octeon) that they
had a way to do this using memory dump but it was hooked up outside of gcov and
in newlib instead.
I do think this is a good idea for embedded env but I am not sure if anyone who
is interested in doing it. for Linux env, using nfs mount and
-fprofile-dir=/-fprofile-prefix-map=/-fprofile-prefix-path= is one way of doing
it.
Also if you are using Zephyr, it does handle the writes and does the store to
memory and such too. See
https://docs.zephyrproject.org/latest/develop/test/coverage.html .
