https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115344

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2024-06-05

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
IVOPTs can do this with and I also think without the help of IVCANON which
could add a decrementing IV (it only does that for constant number of
iterations
for some reason).

I'm not sure why, for this example, IVOPTs doesn't add a candidate IV
that decrements to zero.  I see

Predict doloop failure due to target specific checks.

so the doloop candidate isn't added?

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