; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -instsimplify -S -o /dev/null -debug-pass=Details -enable-new-pm=0 2>&1 | FileCheck --check-prefix DETAILS %s
; RUN: opt < %s -instsimplify -S -o - | FileCheck %s

; Verify that InstSimplifyLegacyPass notifies the pass manager about changes
; being made (when a call is removed CGSCC must be updated).
;
; DETAILS: Made Modification 'Remove redundant instructions' on Function 'main'

define internal void @func_1(i64* nocapture readnone %0) #0 {
; CHECK-LABEL: @func_1(
; CHECK-NEXT:    ret void
;
  ret void
}

define i16 @main(i16 %0, i16** nocapture readnone %1) #1 {
; CHECK-LABEL: @main(
; CHECK-NEXT:  bb1:
; CHECK-NEXT:    unreachable
;
bb1:
  call void @func_1(i64* undef)
  unreachable
}

attributes #0 = { noinline norecurse nounwind readnone willreturn }
attributes #1 = { norecurse nounwind readnone }