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      1 ; RUN: opt -jump-threading -S < %s
      2 
      3 define void @func(i8 zeroext %p_44) nounwind {
      4 entry:
      5   br i1 false, label %for.cond2, label %if.end50
      6 
      7 for.cond2:                                        ; preds = %for.inc46, %lor.end, %entry
      8   %p_44.addr.1 = phi i8 [ %p_44.addr.1, %lor.end ], [ %p_44, %entry ], [ %p_44.addr.1, %for.inc46 ]
      9   br i1 undef, label %for.inc46, label %for.body5
     10 
     11 for.body5:                                        ; preds = %for.cond2
     12   br i1 undef, label %lbl_465, label %if.then9
     13 
     14 if.then9:                                         ; preds = %for.body5
     15   br label %return
     16 
     17 lbl_465:                                          ; preds = %lbl_465, %for.body5
     18   %tobool19 = icmp eq i8 undef, 0
     19   br i1 %tobool19, label %if.end21, label %lbl_465
     20 
     21 if.end21:                                         ; preds = %lbl_465
     22   %conv23 = zext i8 %p_44.addr.1 to i64
     23   %xor = xor i64 %conv23, 1
     24   %tobool.i = icmp eq i64 %conv23, 0
     25   br i1 %tobool.i, label %cond.false.i, label %safe_mod_func_uint64_t_u_u.exit
     26 
     27 cond.false.i:                                     ; preds = %if.end21
     28   %div.i = udiv i64 %xor, %conv23
     29   br label %safe_mod_func_uint64_t_u_u.exit
     30 
     31 safe_mod_func_uint64_t_u_u.exit:                  ; preds = %cond.false.i, %if.end21
     32   %cond.i = phi i64 [ %div.i, %cond.false.i ], [ %conv23, %if.end21 ]
     33   %tobool28 = icmp eq i64 %cond.i, 0
     34   br i1 %tobool28, label %lor.rhs, label %lor.end
     35 
     36 lor.rhs:                                          ; preds = %safe_mod_func_uint64_t_u_u.exit
     37   br label %lor.end
     38 
     39 lor.end:                                          ; preds = %lor.rhs, %safe_mod_func_uint64_t_u_u.exit
     40   br label %for.cond2
     41 
     42 for.inc46:                                        ; preds = %for.cond2
     43   br label %for.cond2
     44 
     45 if.end50:                                         ; preds = %entry
     46   br label %return
     47 
     48 return:                                           ; preds = %if.end50, %if.then9
     49   ret void
     50 }
     51