; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -passes=indvars < %s | FileCheck %s

; This test used to assert when expanding an addrec into a loop without
; preheader.

define void @test(ptr %tgt) {
; CHECK-LABEL: @test(
; CHECK-NEXT:  bb31:
; CHECK-NEXT:    indirectbr ptr [[TGT:%.*]], [label [[EXIT:%.*]], label %bb33]
; CHECK:       exit:
; CHECK-NEXT:    ret void
; CHECK:       bb33:
; CHECK-NEXT:    [[TMP34:%.*]] = phi i32 [ [[TMP50:%.*]], [[BB49:%.*]] ], [ 0, [[BB31:%.*]] ]
; CHECK-NEXT:    br i1 false, label [[BB40_PREHEADER:%.*]], label [[BB49]]
; CHECK:       bb40.preheader:
; CHECK-NEXT:    br label [[BB40:%.*]]
; CHECK:       bb40:
; CHECK-NEXT:    br label [[BB40]]
; CHECK:       bb49:
; CHECK-NEXT:    [[TMP50]] = add i32 [[TMP34]], 1
; CHECK-NEXT:    br label [[BB33:%.*]]
;
bb31:
  indirectbr ptr %tgt, [label %exit, label %bb33]

exit:
  ret void

bb33:                                             ; preds = %bb49, %bb31
  %tmp34 = phi i32 [ %tmp50, %bb49 ], [ 0, %bb31 ]
  %tmp36 = add i32 %tmp34, 1
  br i1 false, label %bb40, label %bb49

bb40:                                             ; preds = %bb38, %bb37
  %tmp41 = phi i32 [ %tmp36, %bb33 ], [ %tmp39, %bb40 ]
  %tmp39 = add i32 %tmp41, 0
  br label %bb40

bb49:                                             ; preds = %bb35
  %tmp50 = add i32 %tmp34, 1
  br label %bb33
}