https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91986
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-10-04
CC| |rguenth at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
So the reason is we cannot compute the number of iterations of the inner loop
and we generally avoid unrolling outer loops.
