http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45375
Steven Bosscher <steven at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |steven at gcc dot gnu.org --- Comment #131 from Steven Bosscher <steven at gcc dot gnu.org> 2012-05-12 15:52:54 UTC --- (In reply to comment #130) > There are some obvious questions, like why IRA needs 63% of GGC memory, > and VRP 23% > tree VRP : 65.88 ( 2%) usr 0.73 ( 2%) sys 66.71 >( 2%) wall 862879 kB (24%) ggc Is it possible to do this again with gathering statistics enabled? The only thing I can think of for this would be ASSERT_EXPRs and all the rewriting involved for them. > tree slp vectorization : 25.42 ( 1%) usr 0.16 ( 0%) sys 25.50 > ( 1%) wall 436119 kB (12%) ggc This 12% also seems excessive. > CPROP : 52.83 ( 2%) usr 0.33 ( 1%) sys 52.91 > ( 2%) wall 336514 kB ( 9%) ggc And this one also. I'll see if I can understand and explain this one. > integrated RA : 191.13 ( 7%) usr 0.44 ( 1%) sys 190.64 > ( 7%) wall 2328880 kB (65%) ggc Uh, wow! :-(