text: ; RUN: opt < %s -loop-unroll -S | FileCheck %s
  ; RUN: opt < %s -passes='require<opt-remark-emit>,unroll' -S | FileCheck %s
  
  
  ; This should not unroll since the address of the loop header is taken.
  
  ; CHECK-LABEL: @test1(
  ; CHECK: store i8* blockaddress(@test1, %l1), i8** %P
  ; CHECK: l1:
  ; CHECK-NEXT: phi i32
  ; rdar://8287027
  define i32 @test1(i8** %P) nounwind ssp {
  entry:
    store i8* blockaddress(@test1, %l1), i8** %P
    br label %l1
  
  l1:                                               ; preds = %l1, %entry
    %x.0 = phi i32 [ 0, %entry ], [ %inc, %l1 ]
    %inc = add nsw i32 %x.0, 1
    %exitcond = icmp eq i32 %inc, 3
    br i1 %exitcond, label %l2, label %l1
  
  l2:                                               ; preds = %l1
    ret i32 0
  }
  
  ; This should not unroll since the call is 'noduplicate'.
  
  ; CHECK-LABEL: @test2(
  define i32 @test2(i8** %P) nounwind ssp {
  entry:
    br label %l1
  
  l1:                                               ; preds = %l1, %entry
    %x.0 = phi i32 [ 0, %entry ], [ %inc, %l1 ]
  ; CHECK: call void @f()
  ; CHECK-NOT: call void @f()
    call void @f() noduplicate
    %inc = add nsw i32 %x.0, 1
    %exitcond = icmp eq i32 %inc, 3
    br i1 %exitcond, label %l2, label %l1
  
  l2:                                               ; preds = %l1
    ret i32 0
  ; CHECK: }
  }
  
  declare void @f()
  