[LLVMbugs] [Bug 1248] Another InstCombine issue

bugzilla-daemon at cs.uiuc.edu bugzilla-daemon at cs.uiuc.edu
Wed Mar 21 16:21:54 PDT 2007


rspencer at x10sys.com changed:

           What    |Removed                     |Added
             Status|ASSIGNED                    |RESOLVED
         OS/Version|Linux                       |All
           Platform|PC                          |All
         Resolution|                            |FIXED

------- Additional Comments From rspencer at x10sys.com  2007-03-21 18:21 -------
Turns out there were two bugs. The AddWithOverflow needed to be APIntified and
to deal with the sign properly. Also, in the case of:
   %Y = sdiv iN %X, C1
   icmp pred iN %Y, -C2
there was an off-by-one error in the high bound for the range test that is
produced in the replacement. 

This patch was applied:

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