On Fri, 28 Mar 2014 10:08:53 +0000 Emil Velikov <emil.l.veli...@gmail.com> wrote:
> On 28/03/14 08:35, Lauri Kasanen wrote: > > Emil Velikov <emil.l.veli...@gmail.com> wrote: > > > >> By doing GC the linker removes all the symbols that are not referenced > >> and/or used by the final library. This results in a saving of ~100K > >> up-to ~600K per (stripped) binary (classic vs gallium drivers). > >> > >> If interested one can ask the compiler to print the sections that are > >> removed using -Wl,--print-gc-sections. > > > > I didn't see where you add the corresponding flags to CFLAGS/CXXFLAGS. > > > What do you have in mind with "the corresponding flags" ? The next paragraph, ie ffunction-sections and fdata-sections. > > Without -ffunction-sections -fdata-sections in compile flags the garbage > > collection is handicapped - add those by default too, and see much > > greater gains. > > > "Handicapped" or not it produces very nice results at this point. AFAICS both > options that you've mentioned have some interesting side effects, from which I > would rather opt out at this stage. Speaking of "much greather gains" do you > have any numbers in mind (wrt mesa) ? No numbers for mesa, sorry. Without those switches the garbage collection is effectively file-level, not symbol/function-level. - Lauri _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
