https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62016
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Known to work| |5.0 Summary|[4.8/4.9/5 Regression] very |[4.8/4.9 Regression] very |slow compilation at -O3 on |slow compilation at -O3 on |x86_64-linux-gnu |x86_64-linux-gnu Known to fail| |4.8.3, 4.9.2 --- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> --- Yep. > /usr/bin/time gcc-4.7 t.c -O3 0.10user 0.02system 0:00.62elapsed 21%CPU (0avgtext+0avgdata 15704maxresident)k 26080inputs+48outputs (113major+9177minor)pagefaults 0swaps > /usr/bin/time gcc-4.8 t.c -O3 ^C 0.00user 0.00system 6:11.40elapsed 0%CPU (0avgtext+0avgdata 1136maxresident)k 1440inputs+0outputs (7major+331minor)pagefaults 0swaps > /usr/bin/time gcc-4.9 t.c -O3 3.13user 0.18system 0:03.84elapsed 86%CPU (0avgtext+0avgdata 404088maxresident)k 28400inputs+48outputs (128major+137978minor)pagefaults 0swaps > /usr/bin/time /space/rguenther/install/gcc-5.0/bin/gcc t.c -O3 0.04user 0.01system 0:00.28elapsed 20%CPU (0avgtext+0avgdata 13364maxresident)k 6376inputs+48outputs (17major+8570minor)pagefaults 0swaps