http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29845
--- Comment #11 from Oleg Endo <olegendo at gcc dot gnu.org> 2012-11-07 23:33:55 UTC --- (In reply to comment #10) > but the compiler is not much good at combining > high-level transformations with streamlined data representation, > ABI modification, register allocation and scheduling to make the best use > of an architecture. Do you have any particular example in mind? Generally, true ... but things are improving slowly ;)