[Bug tree-optimization/112814] `Plus <PHI <a,b>, PHI<b,a>>` is not optimized to just PLUS<a,b>

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112814

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2023-12-04

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Interesting one - this isn't catched by PRE code hoisting because that only
hoists sth if it's available in one of the successors (but it's only antic
there).