[Bug tree-optimization/50955] [4.7 Regression] IVopts incorrectly rewrite the address of a global memory access into a local form.

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50955

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |wrong-code
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2011-11-02
                 CC|                            |rguenth at gcc dot gnu.org
   Target Milestone|---                         |4.7.0
            Summary|IVopts incorrectly rewrite  |[4.7 Regression] IVopts
                   |the address of a global     |incorrectly rewrite the
                   |memory access into a local  |address of a global memory
                   |form.                       |access into a local form.
     Ever Confirmed|0                           |1

--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-11-02 
09:42:23 UTC ---
I think we should prune any candidate that has more than one symbol in its
affine combination (or rather not add such candidates in the first place).