mirror of
https://github.com/apple/swift.git
synced 2026-10-18 17:49:23 +02:00
Max Desiatov
d7dcf22174
Depends on https://github.com/swiftlang/llvm-project/pull/12648 Resolves https://github.com/swiftlang/swift/issues/69333 rdar://117361311
35 lines
1.4 KiB
Swift
35 lines
1.4 KiB
Swift
// Verify that async coroutine splitting on Wasm uses musttail/return_call
|
|
// with the tail-call feature and regular calls without it.
|
|
|
|
// IR-level checks:
|
|
// RUN: %target-swift-frontend %s -emit-ir -module-name test -disable-availability-checking | %FileCheck %s --check-prefix=NOTAIL
|
|
// RUN: %target-swift-frontend %s -emit-ir -module-name test -disable-availability-checking -Xcc -mtail-call | %FileCheck %s --check-prefix=TAIL
|
|
|
|
// Assembly-level checks:
|
|
// RUN: %target-swift-frontend %s -S -module-name test -disable-availability-checking -Xcc -mtail-call | %FileCheck %s --check-prefix=TAIL-ASM
|
|
// RUN: %target-swift-frontend %s -S -module-name test -disable-availability-checking | %FileCheck %s --check-prefix=NOTAIL-ASM
|
|
|
|
// REQUIRES: concurrency
|
|
// REQUIRES: CPU=wasm32
|
|
|
|
func callee() async -> Int { return 42 }
|
|
|
|
public func caller() async -> Int {
|
|
return await callee()
|
|
}
|
|
|
|
// Without -mtail-call: async functions use swiftcc, no musttail
|
|
// NOTAIL: define {{.*}}swiftcc void @"$s4test6callerSiyYaF"(ptr swiftasync
|
|
// NOTAIL-NOT: musttail call
|
|
|
|
// With -mtail-call: async functions use swifttailcc with musttail
|
|
// TAIL: define {{.*}}swifttailcc void @"$s4test6callerSiyYaF"(ptr swiftasync
|
|
// TAIL: musttail call swifttailcc void
|
|
|
|
// Assembly with -mtail-call: return_call Wasm instruction
|
|
// TAIL-ASM: return_call
|
|
|
|
// Assembly without -mtail-call: no return_call Wasm instruction
|
|
// NOTAIL-ASM: .functype
|
|
// NOTAIL-ASM-NOT: return_call
|