https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84402
--- Comment #59 from Martin Liška <marxin at gcc dot gnu.org> --- (In reply to Andrew Carlotti from comment #58) > Since November 2021, there's been a significant regression in the compile > time for gimple-match.cc during a bootstrap build (+100% in Stage 2, +73% in > Stage 3), with this regression accounting for over 20% of the current total > bootstrap time on some aarch64 machines. Thank for the interesting numbers! Yeah, it's very unfortunate :/ > > Most of the change in compile time is due to the following 6 commits (of > which one is a performance improvement, and one only regressed the Stage 2 > build): > > 7df89377a7ae3906255e38a79be8e5d962c3a0df 24th November 2021 > Enhance optimize_atomic_bit_test_and to handle truncation. (Hongtao Liu) > Stage 2: +27% > Stage 3: +33% This one is btw. a known issue PR108129.
