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Erik Eckstein
3243f87204
Tests require the compiler built with SwiftCompilerSources since a long time. So this lit feature was redundant anyway. We can remove it.
38 lines
1.6 KiB
Swift
38 lines
1.6 KiB
Swift
// Verify that embedded async coroutine splitting on Wasm uses
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// musttail/return_call with the tail-call feature and regular calls without it.
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// IR-level checks:
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// RUN: %target-swift-frontend -enable-experimental-feature Embedded -parse-as-library -module-name test %s -emit-ir | %FileCheck %s --check-prefix=NOTAIL
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// RUN: %target-swift-frontend -enable-experimental-feature Embedded -parse-as-library -module-name test %s -emit-ir -Xcc -mtail-call | %FileCheck %s --check-prefix=TAIL
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// Assembly-level checks:
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// RUN: %target-swift-frontend -enable-experimental-feature Embedded -parse-as-library -module-name test %s -S -Xcc -mtail-call | %FileCheck %s --check-prefix=TAIL-ASM
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// RUN: %target-swift-frontend -enable-experimental-feature Embedded -parse-as-library -module-name test %s -S | %FileCheck %s --check-prefix=NOTAIL-ASM
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// REQUIRES: optimized_stdlib
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// REQUIRES: OS=wasip1
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// REQUIRES: swift_feature_Embedded
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import _Concurrency
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func callee() async -> Int { return 42 }
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public func caller() async -> Int {
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return await callee()
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}
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// Without -mtail-call: async functions use swiftcc, no musttail
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// NOTAIL: define {{.*}}swiftcc void @"$e4test6callerSiyYaF"(ptr swiftasync
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// NOTAIL-NOT: musttail call
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// With -mtail-call: async functions use swifttailcc with musttail
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// TAIL: define {{.*}}swifttailcc void @"$e4test6callerSiyYaF"(ptr swiftasync
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// TAIL: musttail call swifttailcc void
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// Assembly with -mtail-call: return_call Wasm instruction
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// TAIL-ASM: return_call
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// Assembly without -mtail-call: no return_call Wasm instruction
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// NOTAIL-ASM: .functype
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// NOTAIL-ASM-NOT: return_call
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