File: cleanup_debugstep.sil

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// RUN: %target-sil-opt -enable-sil-verify-all %s -cleanup-debug-steps -sil-print-debuginfo | %FileCheck %s

// REQUIRES: swift_in_compiler

import Swift
import Builtin

sil @f : $@convention(thin) () -> ()

// CHECK-LABEL: sil @remove_after_previous_location
// CHECK-NOT:     debug_step
// CHECK:       } // end sil function 'remove_after_previous_location'
sil @remove_after_previous_location : $@convention(thin) () -> () {
bb0:
  %f = function_ref @f : $@convention(thin) () -> ()
  %a = apply %f() : $@convention(thin) () -> (), loc "a.swift":1:2
  debug_step, loc "a.swift":1:2
  %r = tuple ()
  return %r : $()
}

// CHECK-LABEL: sil @dont_remove_after_previous_location
// CHECK:         debug_step
// CHECK:       } // end sil function 'dont_remove_after_previous_location'
sil @dont_remove_after_previous_location : $@convention(thin) () -> () {
bb0:
  %f = function_ref @f : $@convention(thin) () -> ()
  %a = apply %f() : $@convention(thin) () -> (), loc "a.swift":1:2
  %r = tuple (), loc "a.swift":27:2 
  debug_step, loc "a.swift":1:2
  return %r : $()
}

// CHECK-LABEL: sil @remove_two_after_previous_location
// CHECK-NOT:     debug_step
// CHECK:       } // end sil function 'remove_two_after_previous_location'
sil @remove_two_after_previous_location : $@convention(thin) () -> () {
bb0:
  %f = function_ref @f : $@convention(thin) () -> ()
  %a = apply %f() : $@convention(thin) () -> (), loc "a.swift":1:2
  debug_step, loc "a.swift":1:2
  debug_step, loc "a.swift":1:2
  %r = tuple ()
  return %r : $()
}

// CHECK-LABEL: sil @remove_before_next_location
// CHECK-NOT:     debug_step
// CHECK:       } // end sil function 'remove_before_next_location'
sil @remove_before_next_location : $@convention(thin) () -> () {
bb0:
  %f = function_ref @f : $@convention(thin) () -> ()
  %a = apply %f() : $@convention(thin) () -> ()
  debug_step, loc "a.swift":1:2
  %r = tuple (), loc "<compiler-generated>":0:0
  return %r : $(), loc "a.swift":1:2
}

// CHECK-LABEL: sil @dont_remove_before_next_location
// CHECK:         debug_step
// CHECK:       } // end sil function 'dont_remove_before_next_location'
sil @dont_remove_before_next_location : $@convention(thin) () -> () {
bb0:
  %f = function_ref @f : $@convention(thin) () -> ()
  %a = apply %f() : $@convention(thin) () -> ()
  debug_step, loc "a.swift":1:2
  %r = tuple (), loc "a.swift":27:2 
  return %r : $(), loc "a.swift":1:2
}

// CHECK-LABEL: sil @remove_two_before_next_location
// CHECK-NOT:     debug_step
// CHECK:       } // end sil function 'remove_two_before_next_location'
sil @remove_two_before_next_location : $@convention(thin) () -> () {
bb0:
  %f = function_ref @f : $@convention(thin) () -> ()
  %a = apply %f() : $@convention(thin) () -> ()
  debug_step, loc "a.swift":1:2
  debug_step, loc "a.swift":1:2
  %r = tuple (), loc "<compiler-generated>":0:0
  return %r : $(), loc "a.swift":1:2
}

// CHECK-LABEL: sil @remove_null_location
// CHECK-NOT:     debug_step
// CHECK:       } // end sil function 'remove_null_location'
sil @remove_null_location : $@convention(thin) () -> () {
bb0:
  %f = function_ref @f : $@convention(thin) () -> ()
  %a = apply %f() : $@convention(thin) () -> ()
  debug_step, loc "<compiler-generated>":0:0
  %r = tuple ()
  return %r : $(), loc "a.swift":1:2
}
// CHECK-LABEL: sil @dont_remove_one
// CHECK:     debug_step
// CHECK:       } // end sil function 'dont_remove_one'
sil @dont_remove_one : $@convention(thin) () -> () {
bb0:
  %f = function_ref @f : $@convention(thin) () -> ()
  %a = apply %f() : $@convention(thin) () -> ()
  debug_step, loc "a.swift":1:2
  %r = tuple ()
  return %r : $()
}

// CHECK-LABEL: sil @replace_three_with_one
// CHECK:         apply
// CHECK-NEXT:    debug_step , loc "a.swift":1:2
// CHECK-NEXT:    tuple
// CHECK:       } // end sil function 'replace_three_with_one'
sil @replace_three_with_one : $@convention(thin) () -> () {
bb0:
  %f = function_ref @f : $@convention(thin) () -> ()
  %a = apply %f() : $@convention(thin) () -> ()
  debug_step, loc "a.swift":1:2
  debug_step, loc "a.swift":1:2
  debug_step, loc "a.swift":1:2
  %r = tuple ()
  return %r : $()
}

// CHECK-LABEL: sil @replace_three_with_two
// CHECK:         apply
// CHECK-NEXT:    debug_step , loc "a.swift":1:2
// CHECK-NEXT:    debug_step , loc "a.swift":2:3
// CHECK-NEXT:    tuple
// CHECK:       } // end sil function 'replace_three_with_two'
sil @replace_three_with_two : $@convention(thin) () -> () {
bb0:
  %f = function_ref @f : $@convention(thin) () -> ()
  %a = apply %f() : $@convention(thin) () -> ()
  debug_step, loc "a.swift":1:2
  debug_step, loc "a.swift":2:3
  debug_step, loc "a.swift":2:3
  %r = tuple ()
  return %r : $()
}


// CHECK-LABEL: sil @dont_remove_two
// CHECK:         debug_step
// CHECK-NEXT:    debug_step
// CHECK:       } // end sil function 'dont_remove_two'
sil @dont_remove_two : $@convention(thin) () -> () {
bb0:
  %f = function_ref @f : $@convention(thin) () -> ()
  %a = apply %f() : $@convention(thin) () -> ()
  debug_step, loc "a.swift":1:2
  debug_step, loc "a.swift":2:3
  %r = tuple ()
  return %r : $()
}