[Bug gcov-profile/47618] Collecting multiple profiles and using all for PGO

[steven at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47618

Steven Bosscher <steven at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2012-07-21
                 CC|                            |steven at gcc dot gnu.org
     Ever Confirmed|0                           |1

--- Comment #1 from Steven Bosscher <steven at gcc dot gnu.org> 2012-07-21 23:57:18 UTC ---
A tool to merge multiple gcda files shoulnd't be very difficult to write. I
don't think this should be done by the compiler itself, that would greatly
complicate things. But a separate tool, gcov-merge say, would work, and this
isn't a big job to create using libgcov (and gcov-dump as an example). You'd
also be able to merge profile information from different directories.

Would something like the above work for you?