| ; 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. |
