https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64928
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Note phase opt and generate is a toplevel time area. The passes which take most of the time are: tree DSE : 2.80 ( 8%) usr 0.00 ( 0%) sys 2.80 ( 8%) wall 0 kB ( 0%) ggc out of ssa : 5.90 (16%) usr 0.50 (59%) sys 6.41 (17%) wall 26 kB ( 0%) ggc CSE : 7.53 (21%) usr 0.01 ( 1%) sys 7.53 (20%) wall 30934 kB ( 6%) ggc reload CSE regs : 5.74 (16%) usr 0.00 ( 0%) sys 5.73 (16%) wall 12325 kB ( 2%) ggc scheduling 2 : 1.79 ( 5%) usr 0.01 ( 1%) sys 1.77 ( 5%) wall 299 kB ( 0%) ggc