[Bug libstdc++/54075] [4.7.1] unordered_map 3x slower than 4.6.2

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54075

--- Comment #14 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-07-26 
17:36:28 UTC ---
In any case, please add the testcase showing 4.5s vs 1.5s.