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[Bug libstdc++/51078] [PATCH] performance improvement of std::count algorithm
- From: "paolo.carlini at oracle dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Sat, 12 Nov 2011 12:34:51 +0000
- Subject: [Bug libstdc++/51078] [PATCH] performance improvement of std::count algorithm
- Auto-submitted: auto-generated
- References: <bug-51078-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51078
--- Comment #19 from Paolo Carlini <paolo.carlini at oracle dot com> 2011-11-12 12:34:51 UTC ---
All in all - again, without having analyzed in any detail the optimization
passes - I come to the conclusion that -funroll-loops is doing its job pretty
well, and also that manually unrolling the loop make its life quite a bit
harder.