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//===--- OpaqueConsumingUsers.swift ---------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2018 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
import TestsUtils
public let benchmarks =
BenchmarkInfo(
name: "OpaqueConsumingUsers",
runFunction: run_OpaqueConsumingUsers,
tags: [.regression, .abstraction, .refcount],
setUpFunction: setup_OpaqueConsumingUsers,
legacyFactor: 20)
// This test exercises the ability of the optimizer to propagate the +1 from a
// consuming argument of a non-inlineable through multiple non-inlinable call
// frames.
//
// We are trying to simulate a user application that calls into a resilient
// setter or initialization. We want to be able to propagate the +1 from the
// setter through the app as far as we can.
class Klass {}
class ConsumingUser {
var _innerValue: Klass = Klass()
var value: Klass {
@inline(never) get {
return _innerValue
}
@inline(never) set {
_innerValue = newValue
}
}
}
var data: Klass? = nil
var user: ConsumingUser? = nil
func setup_OpaqueConsumingUsers() {
switch (data, user) {
case (let x?, let y?):
let _ = x
let _ = y
return
case (nil, nil):
data = Klass()
user = ConsumingUser()
default:
fatalError("Data and user should both be .none or .some")
}
}
@inline(never)
func callFrame1(_ data: Klass, _ user: ConsumingUser) {
callFrame2(data, user)
}
@inline(never)
func callFrame2(_ data: Klass, _ user: ConsumingUser) {
callFrame3(data, user)
}
@inline(never)
func callFrame3(_ data: Klass, _ user: ConsumingUser) {
callFrame4(data, user)
}
@inline(never)
func callFrame4(_ data: Klass, _ user: ConsumingUser) {
user.value = data
}
@inline(never)
public func run_OpaqueConsumingUsers(_ n: Int) {
let d = data.unsafelyUnwrapped
let u = user.unsafelyUnwrapped
for _ in 0..<n*10_000 {
callFrame4(d, u)
}
}
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