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      1 ; RUN: llc < %s -verify-machineinstrs
      2 ;
      3 ; When BRCOND is constant-folded to BR, make sure that PHI nodes don't get
      4 ; spurious operands when the CFG is trimmed.
      5 ;
      6 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
      7 target triple = "x86_64-apple-darwin10.2"
      8 
      9 define fastcc void @_ZSt16__introsort_loopIPdl17less_than_functorEvT_S2_T0_T1_(double* %__first, double* %__last, i64 %__depth_limit) nounwind ssp {
     10 entry:
     11   br i1 undef, label %bb1, label %bb2
     12 
     13 bb1:                                              ; preds = %entry
     14   ret void
     15 
     16 bb2:                                              ; preds = %entry
     17   br label %bb2.outer.i
     18 
     19 bb2.outer.i:                                      ; preds = %bb9.i, %bb2
     20   br i1 undef, label %bb1.i, label %bb5.preheader.i
     21 
     22 bb1.i:                                            ; preds = %bb1.i, %bb2.outer.i
     23   %indvar5.i = phi i64 [ %tmp, %bb1.i ], [ 0, %bb2.outer.i ] ; <i64> [#uses=1]
     24   %tmp = add i64 %indvar5.i, 1                    ; <i64> [#uses=2]
     25   %scevgep.i = getelementptr double* undef, i64 %tmp ; <double*> [#uses=0]
     26   br i1 undef, label %bb1.i, label %bb5.preheader.i
     27 
     28 bb5.preheader.i:                                  ; preds = %bb1.i, %bb2.outer.i
     29   br label %bb5.i
     30 
     31 bb5.i:                                            ; preds = %bb5.i, %bb5.preheader.i
     32   br i1 undef, label %bb5.i, label %bb7.i6
     33 
     34 bb7.i6:                                           ; preds = %bb5.i
     35   br i1 undef, label %bb9.i, label %_ZSt21__unguarded_partitionIPdd17less_than_functorET_S2_S2_T0_T1_.exit
     36 
     37 bb9.i:                                            ; preds = %bb7.i6
     38   br label %bb2.outer.i
     39 
     40 _ZSt21__unguarded_partitionIPdd17less_than_functorET_S2_S2_T0_T1_.exit: ; preds = %bb7.i6
     41   unreachable
     42 }
     43