https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111241
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- With -fno-checking but still the default --enable-checking setting for the trunk: alias stmt walking : 18.90 ( 21%) 0.20 ( 7%) 25.86 ( 24%) 8960 ( 0%) df reaching defs : 9.96 ( 11%) 0.05 ( 2%) 9.90 ( 9%) 0 ( 0%) tree FRE : 9.07 ( 10%) 0.38 ( 13%) 9.49 ( 9%) 14M ( 3%) tree DSE : 9.43 ( 11%) 0.00 ( 0%) 9.45 ( 9%) 11k ( 0%) The rest are spread out. Note "callgraph functions expansion" is a "meta" timevar and includes the above really.