https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96388
--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> --- The partially reduced (In reply to Martin Liška from comment #9) > Created attachment 48962 [details] > Partially reduced test-case > > The reduction is quite stuck at this point. No longer keys on -fPIC though, so the bisection for this is likely wrong. -fno-schedule-insns2 improves it from 18s to 5s compile time and from 1.1GB of peak RSS to 320MB. scheduling 2 : 12.69 ( 71%) 0.10 ( 67%) 12.79 ( 70%) 11128 kB ( 16%) -fmem-report doesn't show anything interesting, looking for heap allocations now to find the offender. Can you bisect your reduced testcase again? GCC 8.4 behaves the same for it rather than being good but GCC 4.8.5 is fine.
