File: borrow_argument.sil

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// RUN: %target-sil-opt %s | %target-sil-opt | %FileCheck %s

// REQUIRES: swift_in_compiler

sil_stage canonical

import Builtin

// CHECK-LABEL: sil [ossa] @borrow_argument_test : $@convention(thin) (@guaranteed Builtin.NativeObject) -> () {
// CHECK: bb1([[PHIBBARG:%.*]] : @reborrow $Builtin.NativeObject):
// CHECK:   [[BF:%.*]] = borrowed [[PHIBBARG]] : $Builtin.NativeObject from (%0 : $Builtin.NativeObject)
// CHECK: end_borrow [[BF]] : $Builtin.NativeObject
sil [ossa] @borrow_argument_test : $@convention(thin) (@guaranteed Builtin.NativeObject) -> () {
bb0(%0 : @guaranteed $Builtin.NativeObject):
  %1 = begin_borrow %0 : $Builtin.NativeObject
  br bb1(%1 : $Builtin.NativeObject)

bb1(%2 : @guaranteed $Builtin.NativeObject):
  %2f = borrowed %2 : $Builtin.NativeObject from (%0 : $Builtin.NativeObject)
  end_borrow %2f : $Builtin.NativeObject
  %4 = tuple()
  return %4 : $()
}