[Bug bootstrap/68404] [6 Regression] PGO/LTO bootstrap failure on ppc64le

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404

--- Comment #2 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
While bisecting I also observed gcc spinning when building libgcc during
phase-profile-feedback.