; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --check-attributes
; RUN: opt < %s -loop-deletion -S | FileCheck %s

define void @f() #0 {
; CHECK: Function Attrs: mustprogress
; CHECK-LABEL: define {{[^@]+}}@f
; CHECK-SAME: () [[ATTR0:#.*]] {
; CHECK-NEXT:    unreachable
;
  br label %1

  %.01 = phi i32 [ 1, %0 ], [ %3, %2 ]
  %.0 = phi i32 [ 1, %0 ], [ %3, %2 ]
  br label %2

  %3 = add nsw i32 %.01, %.0
  br label %1
}

attributes #0 = { mustprogress }