------- Additional Comments From kgardas at objectsecurity dot com 2004-11-19 11:14 ------- Subject: Re: [4.0 Regression] [tree-ssa] Many C++ compile-time regression in 4.0-tree-ssa 040120
I've tested 3.4.2, 4.0.0 (20041026) and 4.0.0 (20041118) with following results: 3.4.2: c++ -I../include -time -O0 -Wall -DPIC -fPIC -c ir.cc -o ir.pic.o # cc1plus 46.98 0.53 # as 4.62 0.22 peak memory consumed: 99MB 4.0.0 (20041026): c++ -I../include -time -O0 -Wall -DPIC -fPIC -c ir.cc -o ir.pic.o # cc1plus 67.13 2.05 # as 5.98 0.30 peak memory consumed: 243MB 4.0.0 (20041118): c++ -I../include -time -O0 -Wall -DPIC -fPIC -c ir.cc -o ir.pic.o # cc1plus 66.47 1.97 # as 5.84 0.27 peak memory consumed 243MB so there is still both compile-time and memory usage regressions presented on main-line. The reason why do you see speed-up in comparison with 3.1/3.3 is that 3.4.2 is really faster compiler (at least from MICO sources point of view). Cheers, Karel -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13776
