https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54710
Eric Gallager <egallager at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |egallager at gcc dot gnu.org --- Comment #11 from Eric Gallager <egallager at gcc dot gnu.org> --- Created attachment 41894 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41894&action=edit result of compiling with -ftime-report -ftime-report-details -fstats (In reply to Larry Evans from comment #10) > Created attachment 28294 [details] > with optimized clang, still with optimized gcc, both with -O1 > > Remade clang with make ENABLE_OPTIMIZED=1. Clang times improved a lot. > > Now, the degradation of relative performance of gcc w.r.t. clang > is more dramatic. > > Still, gcc does better at low LAST_LESS, but reaches break even > at lower LAST_LESS (about 8). Confirmed: $ /usr/local/bin/gcc -c -O1 -time tuple.benchmark.mini.horiz.cpp # cc1plus 4.62 0.25 # as 0.02 0.01 $ I guess 4 and a half seconds is kinda long. Attaching a more detailed time report as a separate file.