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// RUN: %target-swift-frontend -enable-experimental-async-demotion -target %target-swift-5.1-abi-triple -module-name main -O -emit-sil -primary-file %s | %FileCheck %s --implicit-check-not hop_to_executor
// REQUIRES: swift_in_compiler
// REQUIRES: concurrency
// for now, check for the expected number of hops after the pass:
// CHECK: hop_to_executor
// CHECK: hop_to_executor
// CHECK: hop_to_executor
// CHECK: hop_to_executor
@MainActor func mainActorFn() {}
func TRUE_LEAF() async {}
func ONE() async { await TWO() }
func TWO() async { await THREE() }
func THREE() async {
await TRUE_LEAF()
await ONE()
}
func NOT_CANDIDATE() async {
await mainActorFn()
await ONE()
}
@inline(never)
public
func fib(_ n: Int) async -> Int {
if n <= 1 { return n }
return await fib(n-1) + fib(n-2)
}
@inline(never)
@MainActor
public
func leaf() async {}
@MainActor
public
func start() async {
await leaf()
if await fib(40) != 102334155 {
fatalError("bug")
}
}
public
func checkIt(_ t: Task<Int, Never>) async -> Int {
await t.value
}
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