[Bug tree-optimization/56984] [4.8/4.9 Regression] ICE in tree_vrp.c

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56984



Jakub Jelinek <jakub at gcc dot gnu.org> changed:



           What    |Removed                     |Added

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             Status|NEW                         |ASSIGNED

         AssignedTo|unassigned at gcc dot       |jakub at gcc dot gnu.org

                   |gnu.org                     |



--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> 2013-04-17 
07:30:20 UTC ---

Created attachment 29887

  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29887

gcc49-pr56984.patch



Untested fix.  Another thing is that fold resp. gimple_fold aren't able to

optimize (x >> N) < M into 0 if M << N is the minimum value, but that isn't

something VRP should handle.