[Bug tree-optimization/78194] Failure to optimize squaring

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78194

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |missed-optimization
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2016-11-03
     Ever confirmed|0                           |1

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Looks somewhat artificial (we do have a related bug I think where I played with
enhancing chrec_apply, PR65855).

That said, SCEV / SCCP is supposed to catch these things and chrec_apply is
where limited support comes in.