|  | ; RUN: llc < %s -verify-machineinstrs | 
|  | ; | 
|  | ; When BRCOND is constant-folded to BR, make sure that PHI nodes don't get | 
|  | ; spurious operands when the CFG is trimmed. | 
|  | ; | 
|  | 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" | 
|  | target triple = "x86_64-apple-darwin10.2" | 
|  |  | 
|  | define fastcc void @_ZSt16__introsort_loopIPdl17less_than_functorEvT_S2_T0_T1_(ptr %__first, ptr %__last, i64 %__depth_limit) nounwind ssp { | 
|  | entry: | 
|  | br i1 undef, label %bb1, label %bb2 | 
|  |  | 
|  | bb1:                                              ; preds = %entry | 
|  | ret void | 
|  |  | 
|  | bb2:                                              ; preds = %entry | 
|  | br label %bb2.outer.i | 
|  |  | 
|  | bb2.outer.i:                                      ; preds = %bb9.i, %bb2 | 
|  | br i1 undef, label %bb1.i, label %bb5.preheader.i | 
|  |  | 
|  | bb1.i:                                            ; preds = %bb1.i, %bb2.outer.i | 
|  | %indvar5.i = phi i64 [ %tmp, %bb1.i ], [ 0, %bb2.outer.i ] ; <i64> [#uses=1] | 
|  | %tmp = add i64 %indvar5.i, 1                    ; <i64> [#uses=2] | 
|  | %scevgep.i = getelementptr double, ptr undef, i64 %tmp ; <ptr> [#uses=0] | 
|  | br i1 undef, label %bb1.i, label %bb5.preheader.i | 
|  |  | 
|  | bb5.preheader.i:                                  ; preds = %bb1.i, %bb2.outer.i | 
|  | br label %bb5.i | 
|  |  | 
|  | bb5.i:                                            ; preds = %bb5.i, %bb5.preheader.i | 
|  | br i1 undef, label %bb5.i, label %bb7.i6 | 
|  |  | 
|  | bb7.i6:                                           ; preds = %bb5.i | 
|  | br i1 undef, label %bb9.i, label %_ZSt21__unguarded_partitionIPdd17less_than_functorET_S2_S2_T0_T1_.exit | 
|  |  | 
|  | bb9.i:                                            ; preds = %bb7.i6 | 
|  | br label %bb2.outer.i | 
|  |  | 
|  | _ZSt21__unguarded_partitionIPdd17less_than_functorET_S2_S2_T0_T1_.exit: ; preds = %bb7.i6 | 
|  | unreachable | 
|  | } |