// RUN: %target-sil-opt -enable-sil-verify-all %s -sil-deadfuncelim | %FileCheck %s

sil_stage canonical

import Builtin
import Swift

// This function needs to be removed.
// CHECK-NOT: @remove_me

sil private @remove_me : $@convention(thin) (Builtin.Int64) -> Builtin.Int64 {
bb0(%0 : $Builtin.Int64):
  %2 = integer_literal $Builtin.Int1, 0
  %3 = builtin "umul_with_overflow_Int64"(%0 : $Builtin.Int64, %0 : $Builtin.Int64, %2 : $Builtin.Int1) : $(Builtin.Int64, Builtin.Int1)
  %4 = tuple_extract %3 : $(Builtin.Int64, Builtin.Int1), 0
  return %4: $Builtin.Int64
}