[Bug tree-optimization/112905] [missed optimization] fail to reduce a loop that increments two locations of the same buffer

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112905

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2023-12-07
           Keywords|                            |missed-optimization
             Status|UNCONFIRMED                 |NEW
          Component|c++                         |tree-optimization

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
The issue is that store-motion cannot cope with this as A could be equal to B
which would invalidate the transform it would do.  And that's the enabler
and why it works with just a single update.

Confirmed.