[Bug tree-optimization/88844] poor range info for number of loop iterations with a known upper bound

rguenth at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Tue Jan 15 09:20:00 GMT 2019


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

           What    |Removed                     |Added
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2019-01-15
     Ever confirmed|0                           |1

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
The issue is that niter analysis cannot compute the number of iterations.
It's sth like floor_log2(i)/4 when header copied.

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