https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92680
Bug ID: 92680
Summary: PGO bootstrap is broken with
--with-build-config=bootstrap-lto-lean and in-itree
mpfr
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: bootstrap
Assignee: unassigned at gcc dot gnu.org
Reporter: hubicka at gcc dot gnu.org
Target Milestone: ---
Build with bootstrap-lto-lean with in-tree mpfr fails in profile mismatch on
set_d.o. This is caused by fact that mpfr actually misconfigures itself with
LTO. Its configure script scans assembly to detect format of long double and
this gives wrong answer with LTO leading to suboptimal configuration.
