[Bug tree-optimization/88217] [8/9 Regression] Compile time and memory hog w/ -O2 -fstrict-enums -fno-tree-forwprop -fno-tree-fre

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88217

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2018-11-27
                 CC|                            |marxin at gcc dot gnu.org,
                   |                            |rguenth at gcc dot gnu.org
      Known to work|                            |7.3.0
     Ever confirmed|0                           |1
      Known to fail|                            |8.2.0, 9.0

--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Started to be slow with r258646:

Author: rguenth
2018-03-19  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84933
        * tree-vrp.c (set_and_canonicalize_value_range): Treat out-of-bound
        values as -INF/INF when canonicalizing an ANTI_RANGE to a RANGE.

        * g++.dg/pr84933.C: New testcase.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@258646
138bc75d-0d04-0410-961f-82ee72b054a4