[Bug tree-optimization/22591] [4.0/4.1 Regression] wrong alias information causes an incorrect redundant load elimination

[steven at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P2                          |P1
            Summary|[4.0/4.1 Regression]        |[4.0/4.1 Regression] wrong
                   |std::swap() followed by     |alias information causes an
                   |list::erase() produces      |incorrect redundant load
                   |incorrect list::begin()     |elimination


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22591