On Thu, May 02, 2019 at 07:41:18PM +0200, Richard Biener wrote: > On May 2, 2019 7:00:16 PM GMT+02:00, Segher Boessenkool > <seg...@kernel.crashing.org> wrote: > >On Thu, May 02, 2019 at 03:18:00PM +0200, Richard Biener wrote: > >> Somewhen earlier this year I've done the experiment with using > >> a compile with -flto -fno-fat-lto-objects and a link > >> via -flto -r -flinker-output=rel into the object file. This cut > >> compile-time more than in half with less maintainance overhead. > >> > >> Adding other files to this handling looks trivial as well, as well > >> as conditionalizing it (I'd probably not want this for devel builds). > > > >But we want devel builds to be a lot faster than they are now :-/ > > My devel build is -O0 non-bootstrapped and building the files after > dependency changes is fast enough. It's the bootstraps that matter, no?
Yes, I bootstrap most of the time. For development. It catches a *lot* of problems progressive builds do not. (Those are plenty fast already of course, -O0 or not). Segher
