This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug tree-optimization/67153] [5/6 Regression] integer optimizations 53% slower than std::bitset<>
- From: "ubizjak at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 11 Aug 2015 18:19:43 +0000
- Subject: [Bug tree-optimization/67153] [5/6 Regression] integer optimizations 53% slower than std::bitset<>
- Auto-submitted: auto-generated
- References: <bug-67153-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67153
--- Comment #8 from UroÅ Bizjak <ubizjak at gmail dot com> ---
(In reply to UroÅ Bizjak from comment #7)
> Can you experiment a bit with -mno-bmi and/or -mno-bmi2 compile options?
Also, perf is able to record execution profiles, it will help you find hot
spots.