https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114855
--- Comment #52 from rguenther at suse dot de <rguenther at suse dot de> --- On Wed, 25 Sep 2024, aldy at quesejoda dot com wrote: > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114855 > > --- Comment #51 from aldy at quesejoda dot com --- > "rguenth at gcc dot gnu.org via Gcc-bugs" <gcc-bugs@gcc.gnu.org> writes: > > > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114855 > > > > --- Comment #50 from Richard Biener <rguenth at gcc dot gnu.org> --- > > (In reply to Richard Biener from comment #4) > >> Trunk at -O1: > >> > >> dominator optimization : 495.14 ( 82%) 0.20 ( 5%) 495.44 ( > >> 81%) 113M ( 5%) > > > > Compared to that we're now at the following state with -O1 (everything >= > > 4%): > > > > callgraph ipa passes : 17.23 ( 10%) > > df live regs : 6.76 ( 4%) > > dominator optimization : 89.76 ( 50%) > > backwards jump threading : 7.94 ( 4%) > > TOTAL : 180.77 > > > > So it's still DOM aka forward threading eating most of the time. > > -fno-thread-jumps improves compile-time to 77s, DOM then still takes 25s > > (33%) > > (top offenders are then dom_oracle::register_transitives, bitmap_set_bit > > and wide_int_storage copying). I noticed the unbound dominator traversal > > in register_transitives already. > > Have you tried the patch in comment 22? That should reduce the time in > DOM by 23%. I thought that was already applied ...?
