[Bug tree-optimization/46590] [4.5/4.6/4.7 Regression] long compile time with -O2 and many loops

[matz at gcc dot gnu.org]

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

--- Comment #19 from Michael Matz <matz at gcc dot gnu.org> 2012-01-19 15:10:43 
UTC ---
The var-expansion slowness is fixed again.  The rest of course still applies.