[Bug tree-optimization/61680] [4.8/4.9/4.10 Regression] vectorization gives wrong answer for sandybridge target

[dominiq at lps dot ens.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61680

Dominique d'Humieres <dominiq at lps dot ens.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2014-07-03
          Component|fortran                     |tree-optimization
            Summary|vectorization gives wrong   |[4.8/4.9/4.10 Regression]
                   |answer for sandybridge      |vectorization gives wrong
                   |target                      |answer for sandybridge
                   |                            |target
     Ever confirmed|0                           |1

--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed on Corei7 with '-O3 -mavx'. When compiled with revision r165415
(2010-10-13), the executable gives the expected answer, while with r165758
(2010-10-21) it gives 10.0.