[Bug rtl-optimization/21015] [3.4 Regression] Bad loop optimization with -O2

[bonzini at gcc dot gnu dot org]

-- 
Bug 21015 depends on bug 17860, which changed state.

Bug 17860 Summary: [3.4 only] Wrong generated code for loop with varying bound
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17860

           What    |Old Value                   |New Value
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21015