[Bug gcov-profile/55734] [4.8 Regression] gcov-io.c uses builtins not available in non-GCC compilers

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55734

--- Comment #15 from Richard Biener <rguenth at gcc dot gnu.org> 2012-12-19 13:07:01 UTC ---
(In reply to comment #14)
> (In reply to comment #10)
> > Ah yes, now I remember.  Yes, there is a problem with libgcov.a.  I 
> > wasn't seeing it because I was only building cc1.  You are correct 
> > Teresa, that is the reason for the gymnastics in my original patch.
> > 
> > houston:/build/trunkboot/gcc$ nm libgcov.a |grep popc
> >                   U popcount_hwi
> > 
> > I will let you and Richard sort it out :).
> 
> libgcov should be built by stage1 gcc already and thus has the builtins
> available.

To be more explicit - use #if IN_LIBGCOV to guard __builtin_popcountll vs.
popcount_hwi.