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

[chip at pobox dot com]

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

--- Comment #18 from Chip Salzenberg <chip at pobox dot com> 2012-07-26 
23:38:34 UTC ---
I couldn't say.  I don't understand the issue, I'm just reporting results and
deploying packages for my fellow devs.