[Bug tree-optimization/58656] New: rnflow regressing after r202826

[Ganesh.Gopalasubramanian at amd dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58656

            Bug ID: 58656
           Summary: rnflow regressing after r202826
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: Ganesh.Gopalasubramanian at amd dot com

Seems the fix for 58464 is regressing rnflow of pb11.

Runtime log of rnflow

Before revision 202826
0:35.558 -> Completed program execution

After revision 202826 (after fix)
0:53.023 -> Completed program execution

The suse polyhedron benchmark log also shows this (after sep23).
http://gcc.opensuse.org/c++bench/polyhedron/polyhedron-summary.txt