[Bug tree-optimization/102384] Missing optimization for pcom after enable O2 vectorization

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102384

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2021-09-17

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
The issue is that we have no way to express the data dependence of these
partial overlapping stores and since predcom works with data dependences
there's nothing to do.