[Bug rtl-optimization/128055] wrong code at -O1 and above: store is deleted although it is read back through an __attribute__((alias)) of the variable

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=128055

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
           Assignee|unassigned at gcc dot gnu.org      |rguenth at gcc dot 
gnu.org

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Because it uses group_ids for this.  Only for negative group_id it eventually
invokes alias analysis.  I have a patch to do that always, when group_ids
differ.

I'll post that for review when testing finishes.