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      1 ; RUN: opt -indvars -S < %s | FileCheck %s
      2 
      3 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
      4 target triple = "x86_64-apple-macosx10.11.0"
      5 
      6 define void @fn1(i1 %c0, i1 %c1) {
      7 ; CHECK-LABEL: @fn1(
      8 entry:
      9   br i1 %c0, label %for.end.34, label %for.cond.1thread-pre-split
     10 
     11 for.cond.loopexit:                                ; preds = %for.end.29, %for.end.7
     12   %f.lcssa = phi i32 [ %f.1, %for.end.29 ], [ %f.1, %for.end.7 ]
     13   br i1 %c1, label %for.end.34, label %for.cond.1thread-pre-split
     14 
     15 for.cond.1thread-pre-split:                       ; preds = %for.cond.loopexit, %entry
     16   %f.047 = phi i32 [ %f.lcssa, %for.cond.loopexit ], [ 0, %entry ]
     17   br label %for.cond.1
     18 
     19 for.cond.1:                                       ; preds = %for.cond.1, %for.cond.1thread-pre-split
     20   br i1 %c1, label %for.cond.4, label %for.cond.1
     21 
     22 for.cond.4:                                       ; preds = %for.end.29, %for.cond.1
     23   %f.1 = phi i32 [ 0, %for.end.29 ], [ %f.047, %for.cond.1 ]
     24   br label %for.cond.5
     25 
     26 for.cond.5:                                       ; preds = %for.cond.5, %for.cond.4
     27   %h.0 = phi i32 [ 0, %for.cond.4 ], [ %inc, %for.cond.5 ]
     28   %cmp = icmp slt i32 %h.0, 1
     29   %inc = add nsw i32 %h.0, 1
     30   br i1 %cmp, label %for.cond.5, label %for.end.7
     31 
     32 for.end.7:                                        ; preds = %for.cond.5
     33   %g.lcssa = phi i32 [ %h.0, %for.cond.5 ]
     34   %tobool10 = icmp eq i32 %g.lcssa, 0
     35   br i1 %tobool10, label %for.end.8, label %for.cond.loopexit
     36 
     37 for.end.8:                       ; preds = %for.end.7
     38   br i1 %c1, label %for.cond.19, label %for.end.29
     39 
     40 for.cond.19:                                      ; preds = %for.cond.19, %for.end.8
     41   br label %for.cond.19
     42 
     43 for.end.29:                                       ; preds = %for.end.8
     44   %tobool30 = icmp eq i32 %f.1, 0
     45   br i1 %tobool30, label %for.cond.4, label %for.cond.loopexit
     46 
     47 for.end.34:                                       ; preds = %for.cond.loopexit, %entry
     48   ret void
     49 }
     50