[Bug tree-optimization/55689] New: no_evolution_in_loop_p is too conservative

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55689



             Bug #: 55689

           Summary: no_evolution_in_loop_p is too conservative

    Classification: Unclassified

           Product: gcc

           Version: 4.8.0

            Status: UNCONFIRMED

          Severity: enhancement

          Priority: P3

         Component: tree-optimization

        AssignedTo: rgue...@gcc.gnu.org

        ReportedBy: rgue...@gcc.gnu.org





no_evolution_in_loop_p uses hide_evolution_in_other_loops_than_loop

(which looks broken, it isn't even conservative).  no_evolution_in_loop_p

should simply piggy-back on a worker extracted from tree_contains_chrec

and hide_evolution_in_other_loops_than_loop be removed (it's unused then).