https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88481
Alexander Monakov <amonakov at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |WAITING Last reconfirmed| |2018-12-13 CC| |amonakov at gcc dot gnu.org Ever confirmed|0 |1 --- Comment #1 from Alexander Monakov <amonakov at gcc dot gnu.org> --- Without -O, optimization passes are not enabled, even if individual -f options are passed on the command line. If you want to manually find optimizations that affect the outcome, you need to start with -O1 and add -fno options to selectively disable optimizations. The attachment is missing, so changing bug status to "waiting".