[Bug tree-optimization/59660] We fail to optimize common boolean checks pre-inlining

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59660

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2014-01-07
     Ever confirmed|0                           |1

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
I have noticed these, too (-Og is pessimzed by them).  The pattern is generated
by gimplifying.

I've pondered a bit for a good place to handle this special case (phiopt during
early isn't a good option) and the only ones I can think of is cfg-cleanup
(ugh)
and copyprop (at least looks like a copy-propagation somewhat, but that
likely runs too early).