File: simplify_extend_lifetime.sil

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

// REQUIRES: swift_in_compiler

sil_stage raw

import Builtin
import Swift
import SwiftShims

// extend_lifetime should not be eliminated as dead code.
//
// CHECK-LABEL: sil [ossa] @do_not_remove_extend : $@convention(thin) (Int) -> () {
// CHECK:       extend_lifetime %0 : $Int
// CHECK-LABEL: } // end sil function 'do_not_remove_extend'
sil [ossa] @do_not_remove_extend : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
  extend_lifetime %0 : $Int
  %4 = tuple ()
  return %4 : $()
}