[Bug tree-optimization/49279] [4.5 Regression] Optimization incorrectly presuming constant variable inside loop in g++ 4.5 and 4.6 with -O2 and -O3 for x86_64 targets

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49279

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|                            |4.6.2, 4.7.0
            Summary|[4.5/4.6/4.7 Regression]    |[4.5 Regression]
                   |Optimization incorrectly    |Optimization incorrectly
                   |presuming constant variable |presuming constant variable
                   |inside loop in g++ 4.5 and  |inside loop in g++ 4.5 and
                   |4.6 with -O2 and -O3 for    |4.6 with -O2 and -O3 for
                   |x86_64 targets              |x86_64 targets
      Known to fail|4.7.0                       |

--- Comment #17 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-10-07 
08:15:09 UTC ---
Sofar fixed on trunk and the 4.6 branch.