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.
