[Bug tree-optimization/88597] Compile time hog w/ -O1 -fpeel-loops

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88597

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2019-01-02
            Version|4.6.0                       |9.0
           Assignee|unassigned at gcc dot gnu.org      |rguenth at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
The interesting part is of couse that =26 is fast but =27 is slow...  likely
because after completely peeling the inner loop the outer loop is starting to
be peeled and analysis on _that_ body is taking forever for some reason
(well, quadratic analysis in SCEV which isn't guarded "properly" everywhere).

Mine.