[Bug lto/85574] New: [9 Regression] LTO bootstapped binaries differ

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85574

            Bug ID: 85574
           Summary: [9 Regression] LTO bootstapped binaries differ
           Product: gcc
           Version: 9.0
            Status: UNCONFIRMED
          Keywords: needs-bisection
          Severity: normal
          Priority: P3
         Component: lto
          Assignee: unassigned at gcc dot gnu.org
          Reporter: rguenth at gcc dot gnu.org
                CC: marxin at gcc dot gnu.org
  Target Milestone: ---

See PR85571 (which is about LTO IL differences).  Binaries like cc1 and
build/gengtype differ between stage2 and stage3.  This is a regression from
GCC8
where they compare just fine (double-checked with and without checking for
c,c++ bootstrap-lto).

I tried the attached but it doesn't help so I suspect the partitioning changes
instead (unstable sorts?).