[Bug c/63189] [4.8 Regression] Incorrect results from trivial loop when optimized with O3 or O2+tree vectorization

[glisse at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63189

Marc Glisse <glisse at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2014-09-05
            Summary|Incorrect results from      |[4.8 Regression] Incorrect
                   |trivial loop when optimized |results from trivial loop
                   |with O3 or O2+tree          |when optimized with O3 or
                   |vectorization               |O2+tree vectorization
     Ever confirmed|0                           |1

--- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> ---
Seems fine with 4.6, 4.7, 4.9 and 5, only 4.8 fails.