https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87829
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |documentation Status|UNCONFIRMED |NEW Last reconfirmed| |2018-10-31 Ever confirmed|0 |1 --- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- These are two different but yes, the -freorder-blocks info looks wrong, it is indeed enabled with -Os, thust the algorithm used is different.