[Bug tree-optimization/78427] missed optimization of loop condition

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78427

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |missed-optimization
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2016-11-21
                 CC|                            |amker.cheng at gmail dot com
          Component|c++                         |tree-optimization
     Ever confirmed|0                           |1
      Known to fail|                            |7.0

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.  IVOPTs job in this case (it's not simple loop reversal).  Basically
what is missing is a candidate for the desired IV, hopefully costs would then
make that the cheapest in the end.