[Bug middle-end/82918] No aliasing is possible on non equal pointers

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82918

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2017-11-10
                 CC|                            |rguenth at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Currently points-to analysis is not flow-sensitive and thus we have no way to
represent this.  It's also a challenge to keep such information correct, if
attached to the memory accesses for example via MR_DEPENDENCE_{CLIQUE,BASE}
information, because it either restricts code motion across the predicate
or invalidates the info when moving across it.

So - confirmed, but "not so easy".  For this and the related PRs it's probably
best to have on-demand of extra information.