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- ; RUN: opt < %s -analyze -scalar-evolution | FileCheck %s
- ; PR13228
- define void @f() nounwind uwtable readnone {
- entry:
- br label %for.cond
- for.cond: ; preds = %for.cond, %entry
- %c.0 = phi i8 [ 1, %entry ], [ 0, %for.cond ]
- %i.0 = phi i8 [ 0, %entry ], [ %inc, %for.cond ]
- %lnot = icmp eq i8 %i.0, 0
- %inc = add i8 %i.0, 1
- br i1 %lnot, label %for.cond, label %while.cond
- while.cond: ; preds = %while.body, %for.cond
- %b.2 = phi i8 [ %add, %while.body ], [ 0, %for.cond ]
- br i1 undef, label %while.end, label %while.body
- while.body: ; preds = %while.cond
- %add = add i8 %b.2, %c.0
- %tobool7 = icmp eq i8 %add, 0
- br i1 %tobool7, label %while.end, label %while.cond
- while.end: ; preds = %while.body, %while.cond
- ret void
- }
- ;CHECK: Loop %while.cond: <multiple exits> Unpredictable backedge-taken count.
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