[Bug testsuite/77684] many tree-prof testsuite failures in parallel make check

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77684

--- Comment #9 from Martin Sebor <msebor at gcc dot gnu.org> ---
Andi, we keep seeing intermittent failures in these tests.  Can you help?