https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113910
--- Comment #16 from Richard Biener <rguenth at gcc dot gnu.org> --- OK, thanks for checking. Btw, -ftime-report for GCC 11 has different bottle-necks meanwhile fixed: tree PTA : 1.66 ( 3%) tree SSA incremental : 31.86 ( 61%) TOTAL : 52.08 but it had a bit less bloated PTA. I now have tree PTA : 12.21 ( 35%) tree SSA incremental : 3.96 ( 11%) TOTAL : 35.24 on trunk. I guess with bitmaps it always also depends on the memory hierarchy of the machine, nevertheless overall it looks fine on SPARC then. Queued for backporting, some RFC for further improvements on bitmap_hash is on the mailing list but I'm not going to backport that.