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From: "qing.zhao at oracle dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug gcov-profile/95348] GCC records zero functions and modules in
 the profiling data file, ICC does NOT
Date: Fri, 29 May 2020 16:40:27 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D95348

--- Comment #14 from Qing Zhao <qing.zhao at oracle dot com> ---
>=20
> -fprofile-dir=3Dgcc_prof_dir/%p"
>=20
> So my recommendation would be not to use it and let GCOV run-time library=
 merge
> the profiles. Of course, I'll be interested in `perf report` of such a
> instrumented run..

For our application, all processes generating profiling feedback data to a
single directory seems is not a choice.=20
We chose -fprofile-dir=3D%p and then use gcov-merge to merge them.=