[Bug tree-optimization/20121] Aliasing lameness results in missing common subexpressions

[steven at gcc dot gnu dot org]

-- 
Bug 20121 depends on bug 13761, which changed state.

Bug 13761 Summary: [tree-ssa] component refs to the same struct should not alias
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13761

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

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20121