On Sat, Jul 18, 2009 at 02:01:45PM +0200, Ingo Molnar wrote: > > * Anton Vorontsov <avoront...@ru.mvista.com> wrote: > > > On Wed, Jun 17, 2009 at 12:16:30AM +0400, Anton Vorontsov wrote: > > > According to Segher Boessenkool and GCC manual, -fomit-frame-pointer > > > is only the default when optimising on archs/ABIs where it doesn't > > > hinder debugging and -pg. So, we do not get it by default on x86, > > > not at any optimisation level. > > > > > > On the other hand, *using* -fno-omit-frame-pointer causes gcc to > > > produce buggy code on PowerPC targets. > > > > > > If Segher and GCC manual are right, this patch should be a no-op > > > for all arches except PowerPC, where the patch fixes gcc issues. > > > > > > Signed-off-by: Anton Vorontsov <avoront...@ru.mvista.com> > > > --- > > > > > > See this thread for more discussion: > > > http://osdir.com/ml/linux-kernel/2009-05/msg01754.html > > > > > > p.s. > > > Obviously, I didn't test this patch on anything else but PPC32. ;-) > > > > > > Segher, do you know if all GCC versions that we support for > > > building Linux are behaving the way that GCC manual describe? > > > > No news is good news... Ingo, can we merge this into -tip for > > testing? > > Changes to the top level Makefile should really go via Sam's kbuild > tree.
Sam, any thoughts about these patches? Thanks! -- Anton Vorontsov email: cbouatmai...@gmail.com irc://irc.freenode.net/bd2 _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
