https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67075
Eric Gallager <egallager at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |WAITING Last reconfirmed| |2017-08-17 CC| |egallager at gcc dot gnu.org Ever confirmed|0 |1 --- Comment #4 from Eric Gallager <egallager at gcc dot gnu.org> --- redoing https://gcc.gnu.org/ml/gcc-bugs/2017-08/msg01605.html Eric Gallager <egallager at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |WAITING Last reconfirmed| |2017-08-14 CC| |egallager at gcc dot gnu.org Ever confirmed|0 |1 --- Comment #4 from Eric Gallager <egallager at gcc dot gnu.org> --- (In reply to Andrew Pinski from comment #2) > Sounds more like ggc_collect is now always doing the gc and there are a lot > of ggc_collect calls. > > So what is happening we are close to your 32M limit you set, so any garbage > that is produced in a pass will cause the next call to ggc_collect to always > collect. This means there a lot of calls to ggc_collect but in the normal > case (non 0 case), it does not matter. > > You might want to try 5.2 as 4.8.x is no longer supported and there have > been some memory reductions happened since 4.8.x. Changing to WAITING until reporter tries a supported version.