On Wed, Jun 17, 2009 at 9:01 PM, Jakub Jelinek<ja...@redhat.com> wrote: > On Wed, Jun 17, 2009 at 08:56:58PM +0200, drago01 wrote: >> > Note that GCC 4.4 switches -Os on for unlikely executed basic blocks and/or >> > unlikely executed functions (of course profile feedback helps here a lot, >> > but even without it the heuristics gets it right in many cases), so forcing >> > -Os for all code, even hot, is not a good idea. >> > On the other side, compiling everything with -O3 is going to bloat code a >> > lot, just compile with -O3 the hot compilation units or even better just >> > hot functions. >> >> Is this (bloated code) really a problem if the code runs faster? > > Of course it is. You trash caches by rarely used functions. You don't want > to optimize rarely used code at the expense of code size, only the often used.
OK, fair enough. -- fedora-devel-list mailing list fedora-devel-list@redhat.com https://www.redhat.com/mailman/listinfo/fedora-devel-list
