On May 2, 2019 8:14:46 PM GMT+02:00, Segher Boessenkool <seg...@kernel.crashing.org> wrote: >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).
So we'd catch it there but disable by default for stage 1 since we probably do not want to rely on the host compiler. Richard. > >Segher
