[Bug tree-optimization/46590] [4.6/4.7/4.8 Regression] long compile time with -O2 and many loops

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46590

--- Comment #25 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-08-21 
14:10:38 UTC ---
I have a patch for the SCCVN issue, but trying to gather current trunk status
first.