[Bug middle-end/54862] [4.8 Regression] error: comparison between signed and unsigned integer expressions in simplify-rtx.c

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54862



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



           What    |Removed                     |Added

----------------------------------------------------------------------------

             Status|UNCONFIRMED                 |ASSIGNED

   Last reconfirmed|                            |2012-10-09

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

                   |gnu.org                     |

     Ever Confirmed|0                           |1



--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-10-09 
11:53:57 UTC ---

Created attachment 28397

  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28397

gcc48-pr54862.patch



Untested fix.  Guess you get the warning only for 32-bit HWI host/target

combinations.  We shouldn't try to optimize anything for negative shift counts,

so IMHO using UINTVAL is the right thing to do.