1; RUN: opt < %s -analyze -scalar-evolution | FileCheck %s
2
3; PR13228
4define void @f() nounwind uwtable readnone {
5entry:
6  br label %for.cond
7
8for.cond:                                         ; preds = %for.cond, %entry
9  %c.0 = phi i8 [ 1, %entry ], [ 0, %for.cond ]
10  %i.0 = phi i8 [ 0, %entry ], [ %inc, %for.cond ]
11  %lnot = icmp eq i8 %i.0, 0
12  %inc = add i8 %i.0, 1
13  br i1 %lnot, label %for.cond, label %while.cond
14
15while.cond:                                       ; preds = %while.body, %for.cond
16  %b.2 = phi i8 [ %add, %while.body ], [ 0, %for.cond ]
17  br i1 undef, label %while.end, label %while.body
18
19while.body:                                       ; preds = %while.cond
20  %add = add i8 %b.2, %c.0
21  %tobool7 = icmp eq i8 %add, 0
22  br i1 %tobool7, label %while.end, label %while.cond
23
24while.end:                                        ; preds = %while.body, %while.cond
25  ret void
26}
27;CHECK: Loop %while.cond: <multiple exits> Unpredictable backedge-taken count.
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