[Bug bootstrap/66801] [6 Regression] gcc miscompiled during PGO/LTO bootstrap

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66801

--- Comment #15 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
For x86_64 additional --with-arch=native (sandybridge) is needed during
configuration.