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      1 ; RUN: opt < %s -analyze -scalar-evolution | FileCheck %s
      2 ; PR4569
      3 
      4 define i16 @main() nounwind {
      5 entry:
      6         br label %bb.i
      7 
      8 bb.i:           ; preds = %bb1.i, %bb.nph
      9         %l_95.0.i1 = phi i8 [ %tmp1, %bb.i ], [ 0, %entry ]
     10 
     11 ; This cast shouldn't be folded into the addrec.
     12 ; CHECK: %tmp = zext i8 %l_95.0.i1 to i16
     13 ; CHECK: -->  (zext i8 {0,+,-1}<%bb.i> to i16)    Exits: 2
     14 
     15         %tmp = zext i8 %l_95.0.i1 to i16
     16 
     17         %tmp1 = add i8 %l_95.0.i1, -1
     18         %phitmp = icmp eq i8 %tmp1, 1
     19         br i1 %phitmp, label %bb1.i.func_36.exit_crit_edge, label %bb.i
     20 
     21 bb1.i.func_36.exit_crit_edge:
     22         ret i16 %tmp
     23 }
     24