[Bug tree-optimization/35224] New: scalar evolution analysis fails with "evolution of base is not affine"

[irar at il dot ibm dot com]

For the following scalar evolution analysis fails with "evolution of base is
not affine":

 for (i__ = 1; i__ <= i__2; ++i__)
        {
          a[i__] = (b[i__] + b[im1] + b[im2]) * .333f;
          im2 = im1;
          im1 = i__;
        }


-- 
           Summary: scalar evolution analysis fails with "evolution of base
                    is not affine"
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Keywords: missed-optimization
          Severity: enhancement
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: irar at il dot ibm dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35224