; RUN: opt < %s -passes="loop-mssa(simple-loop-unswitch)" -verify-memoryssa -disable-output

define void @init_caller_save() {
entry:
  br label %cond_true78

cond_true78:    ; preds = %bb75, %entry
  %i.0.0 = phi i32 [ 0, %entry ], [ %tmp74.0, %bb75 ]    ; <i32> [#uses=2]
  br label %bb54

bb54:    ; preds = %cond_true78, %bb31
  br i1 false, label %bb75, label %cond_true64

cond_true64:    ; preds = %bb54
  switch i32 %i.0.0, label %cond_next20 [
     i32 17, label %bb31
     i32 18, label %bb31
  ]

cond_next20:    ; preds = %cond_true64
  br label %bb31

bb31:    ; preds = %cond_true64, %cond_true64, %cond_next20
  %iftmp.29.1 = phi i32 [ 0, %cond_next20 ], [ 0, %cond_true64 ], [ 0, %cond_true64 ]    ; <i32> [#uses=0]
  br label %bb54

bb75:    ; preds = %bb54
  %tmp74.0 = add i32 %i.0.0, 1    ; <i32> [#uses=1]
  br label %cond_true78
}