Swift struct stored property

compiler-output.txt

$ swiftc -dump-ast stored.swift
(source_file
  (struct_decl range=[stored.swift:1:1 - line:3:1] "Model" interface type='Model.Type' access=internal non-resilient
    (pattern_binding_decl range=[stored.swift:2:3 - line:2:10]
      (pattern_typed type='Float'
        (pattern_named type='Float' 'w')
        (type_ident
          (component id='Float' bind=Swift.(file).Float))))
    (var_decl range=[stored.swift:2:7 - line:2:7] "w" type='Float' interface type='Float' access=internal storage_kind=stored_with_trivial_accessors
      (accessor_decl implicit range=[stored.swift:2:7 - line:2:7] 'anonname=0x7f83f5055fd0' interface type='(Model) -> () -> Float' access=internal get_for=w
        (parameter_list
          (parameter "self" type='Model' interface type='Model') range=[stored.swift:2:7 - line:2:7])
        (parameter_list)
        (brace_stmt implicit range=[stored.swift:2:7 - line:2:7]
          (return_stmt implicit
            (member_ref_expr implicit type='Float' decl=stored.(file)[email protected]:2:7 direct_to_storage
              (declref_expr implicit type='Model' decl=stored.(file).Model.<anonymous>[email protected]:2:7 function_ref=unapplied)))))
      (accessor_decl implicit range=[stored.swift:2:7 - line:2:7] 'anonname=0x7f83f5056238' interface type='(inout Model) -> (Float) -> ()' access=internal set_for=w
        (parameter_list
          (parameter "self" type='Model' interface type='Model' inout) range=[stored.swift:2:7 - line:2:7])
        (parameter_list
          (parameter "value" type='Float' interface type='Float') range=[stored.swift:2:7 - line:2:7])
        (brace_stmt implicit range=[stored.swift:2:7 - line:2:7]
          (assign_expr
            (member_ref_expr implicit type='@lvalue Float' accessKind=write decl=stored.(file)[email protected]:2:7 direct_to_storage
              (declref_expr implicit type='@lvalue Model' accessKind=readwrite decl=stored.(file).Model.<anonymous>[email protected]:2:7 function_ref=unapplied))
            (declref_expr implicit type='Float' decl=stored.(file).Model.<anonymous>[email protected]:2:7 function_ref=unapplied))))
      (accessor_decl implicit range=[stored.swift:2:7 - line:2:7] 'anonname=0x7f83f5057d00' interface type='(inout Model) -> (Builtin.RawPointer, inout Builtin.UnsafeValueBuffer) -> (Builtin.RawPointer, Builtin.RawPointer?)' access=internal materializeForSet_for=w
        (parameter_list
          (parameter "self" type='Model' interface type='Model' inout) range=[stored.swift:2:7 - line:2:7])
        (parameter_list
          (parameter "buffer" type='Builtin.RawPointer' interface type='Builtin.RawPointer')
          (parameter "callbackStorage" type='Builtin.UnsafeValueBuffer' interface type='Builtin.UnsafeValueBuffer' inout) range=[stored.swift:2:7 - line:2:7])))
    (accessor_decl implicit range=[stored.swift:2:7 - line:2:7] 'anonname=0x7f83f5055fd0' interface type='(Model) -> () -> Float' access=internal get_for=w
      (parameter_list
        (parameter "self" type='Model' interface type='Model') range=[stored.swift:2:7 - line:2:7])
      (parameter_list)
      (brace_stmt implicit range=[stored.swift:2:7 - line:2:7]
        (return_stmt implicit
          (member_ref_expr implicit type='Float' decl=stored.(file)[email protected]:2:7 direct_to_storage
            (declref_expr implicit type='Model' decl=stored.(file).Model.<anonymous>[email protected]:2:7 function_ref=unapplied)))))
    (accessor_decl implicit range=[stored.swift:2:7 - line:2:7] 'anonname=0x7f83f5056238' interface type='(inout Model) -> (Float) -> ()' access=internal set_for=w
      (parameter_list
        (parameter "self" type='Model' interface type='Model' inout) range=[stored.swift:2:7 - line:2:7])
      (parameter_list
        (parameter "value" type='Float' interface type='Float') range=[stored.swift:2:7 - line:2:7])
      (brace_stmt implicit range=[stored.swift:2:7 - line:2:7]
        (assign_expr
          (member_ref_expr implicit type='@lvalue Float' accessKind=write decl=stored.(file)[email protected]:2:7 direct_to_storage
            (declref_expr implicit type='@lvalue Model' accessKind=readwrite decl=stored.(file).Model.<anonymous>[email protected]:2:7 function_ref=unapplied))
          (declref_expr implicit type='Float' decl=stored.(file).Model.<anonymous>[email protected]:2:7 function_ref=unapplied))))
    (accessor_decl implicit range=[stored.swift:2:7 - line:2:7] 'anonname=0x7f83f5057d00' interface type='(inout Model) -> (Builtin.RawPointer, inout Builtin.UnsafeValueBuffer) -> (Builtin.RawPointer, Builtin.RawPointer?)' access=internal materializeForSet_for=w
      (parameter_list
        (parameter "self" type='Model' interface type='Model' inout) range=[stored.swift:2:7 - line:2:7])
      (parameter_list
        (parameter "buffer" type='Builtin.RawPointer' interface type='Builtin.RawPointer')
        (parameter "callbackStorage" type='Builtin.UnsafeValueBuffer' interface type='Builtin.UnsafeValueBuffer' inout) range=[stored.swift:2:7 - line:2:7]))
    (constructor_decl implicit range=[stored.swift:1:8 - line:1:8] "init(w:)" interface type='(Model.Type) -> (Float) -> Model' access=internal designated
      (parameter_list
        (parameter "self" type='Model' interface type='Model' inout) range=[stored.swift:1:8 - line:1:8])
      (parameter_list
        (parameter "w" apiName=w type='Float' interface type='Float') range=[stored.swift:1:8 - line:1:8]))))

stored.swift

struct Model {
  var w: Float
}