[Bug tree-optimization/53922] VRP: semantic conflict between range_includes_zero_p and value_inside_range

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53922

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |wrong-code
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2012-07-11
          Component|middle-end                  |tree-optimization
         AssignedTo|unassigned at gcc dot       |rguenth at gcc dot gnu.org
                   |gnu.org                     |
     Ever Confirmed|0                           |1

--- Comment #4 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-07-11 
11:36:09 UTC ---
The issue is that range_includes_zero_p can not return "I don't know" and
dependent on the use the conservative answer is wrong.

Let me fix this.