http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47618
--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-07-24 22:12:44 UTC --- Created attachment 27869 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27869 Patch for adding merge-gcda here is the patch which adds merge-gcda . I don't add any testcases as it is currently designed only for how Cavium's Simple-exec works in that each core writes out its own gcda file.