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.
