[Bug tree-optimization/98544] [11 regression] Wrong code generated by tree vectorizer

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98544

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |marxin at gcc dot gnu.org
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2021-01-06
     Ever confirmed|0                           |1

--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, one can reduce that to a single loop vectorization:

$ g++ bug2.cc  -std=c++17 -O1 -mavx -ftree-loop-vectorize
-fdbg-cnt=vect_loop:10-10 && ./a.out

but the loop is quite huge.