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

[likan_999.student at sina dot com]

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

--- Comment #2 from likan_999.student at sina dot com 2012-07-23 23:09:43 UTC 
---
Created attachment 27862
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27862
Profiling of gcc-4.6.2 using google-perftools