[Bug tree-optimization/67153] [5/6 Regression] integer optimizations 53% slower than std::bitset<>

ubizjak at gmail dot com gcc-bugzilla@gcc.gnu.org
Tue Aug 11 18:19:00 GMT 2015


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67153

--- Comment #8 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Uroš 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.


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