------- Additional Comments From rguenth at tat dot physik dot uni-tuebingen dot de 2005-01-26 10:24 ------- Subject: Re: [4.0 Regression] Many C++ compile-time regressions for MICO's ORB code
> Bah, I hate profiles for "cc1plus -O2 ir.ii" without peaks: > > CPU: P4 / Xeon with 2 hyper-threads, speed 3194.17 MHz (estimated) > Counted GLOBAL_POWER_EVENTS events (time during which processor is not > stopped) with a unit mask of 0x01 (mandatory) count 100000 > samples % symbol name > 25018 1.6858 walk_tree > 24322 1.6389 cgraph_node_for_asm > 19586 1.3198 htab_find_slot_with_hash Do you have numbers wether we are memory-bandwith limited here? If not, we might micro-optimize hash table access somewhat more. ------- Additional Comments From kgardas at objectsecurity dot com 2005-01-26 10:24 ------- Subject: Re: [4.0 Regression] Many C++ compile-time regressions for MICO's ORB code On Wed, 26 Jan 2005, steven at gcc dot gnu dot org wrote: > > ------- Additional Comments From steven at gcc dot gnu dot org 2005-01-26 > 10:20 ------- > Bah, I hate profiles for "cc1plus -O2 ir.ii" without peaks: True, if I may add something, I would recommend to look at why ir.cc regress so much in memory consumption in comparison with 3.4.x. If you solve this, perhaps compile time regressions goes away too. Thanks, Karel -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13776
