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[Bug gcov-profile/47618] Collecting multiple profiles and using all for PGO
- From: "xunxun1982 at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Sun, 22 Jul 2012 06:56:11 +0000
- Subject: [Bug gcov-profile/47618] Collecting multiple profiles and using all for PGO
- Auto-submitted: auto-generated
- References: <bug-47618-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47618
xunxun <xunxun1982 at gmail dot com> changed:
What |Removed |Added
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CC| |xunxun1982 at gmail dot com
--- Comment #3 from xunxun <xunxun1982 at gmail dot com> 2012-07-22 06:56:11 UTC ---
(In reply to comment #1)
> 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?
But for VC and Intel Compiler
they can auto merge all PGO information.
Will we make gcc to have the similar behavior?