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79b3d2d626
It's already guarded by a feature flag, but it would be nice to signal users that it's not stable yet by adding an underscore prefix.
50 lines
2.2 KiB
Swift
50 lines
2.2 KiB
Swift
// RUN: %target-swift-emit-silgen -enable-experimental-feature Extern %s | %FileCheck %s
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// CHECK-DAG: sil hidden_external @my_c_name : $@convention(c) (Int) -> Int
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@_extern(c, "my_c_name")
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func withCName(_ x: Int) -> Int
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// CHECK-DAG: sil hidden_external @take_c_func_ptr : $@convention(c) (@convention(c) (Int) -> Int) -> ()
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@_extern(c, "take_c_func_ptr")
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func takeCFuncPtr(_ f: @convention(c) (Int) -> Int)
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// CHECK-DAG: sil @public_visible : $@convention(c) (Int) -> Int
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@_extern(c, "public_visible")
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public func publicVisibility(_ x: Int) -> Int
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// CHECK-DAG: sil @private_visible : $@convention(c) (Int) -> Int
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@_extern(c, "private_visible")
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private func privateVisiblity(_ x: Int) -> Int
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// CHECK-DAG: sil hidden_external @withoutCName : $@convention(c) () -> Int
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@_extern(c)
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func withoutCName() -> Int
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// CHECK-DAG: sil hidden [ossa] @$s8extern_c10defaultArgyySiFfA_ : $@convention(thin) () -> Int {
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// CHECK-DAG: sil hidden_external @default_arg : $@convention(c) (Int) -> ()
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@_extern(c, "default_arg")
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func defaultArg(_ x: Int = 42)
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func main() {
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// CHECK-DAG: [[F1:%.+]] = function_ref @my_c_name : $@convention(c) (Int) -> Int
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// CHECK-DAG: [[F2:%.+]] = function_ref @take_c_func_ptr : $@convention(c) (@convention(c) (Int) -> Int) -> ()
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// CHECK-DAG: apply [[F2]]([[F1]]) : $@convention(c) (@convention(c) (Int) -> Int) -> ()
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takeCFuncPtr(withCName)
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// CHECK-DAG: [[F3:%.+]] = function_ref @public_visible : $@convention(c) (Int) -> Int
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// CHECK-DAG: apply [[F3]]({{.*}}) : $@convention(c) (Int) -> Int
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_ = publicVisibility(42)
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// CHECK-DAG: [[F4:%.+]] = function_ref @private_visible : $@convention(c) (Int) -> Int
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// CHECK-DAG: apply [[F4]]({{.*}}) : $@convention(c) (Int) -> Int
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_ = privateVisiblity(24)
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// CHECK-DAG: [[F5:%.+]] = function_ref @withoutCName : $@convention(c) () -> Int
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// CHECK-DAG: apply [[F5]]() : $@convention(c) () -> Int
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_ = withoutCName()
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// CHECK-DAG: [[F6:%.+]] = function_ref @$s8extern_c10defaultArgyySiFfA_ : $@convention(thin) () -> Int
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// CHECK-DAG: [[DEFAULT_V:%.+]] = apply [[F6]]() : $@convention(thin) () -> Int
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// CHECK-DAG: [[F7:%.+]] = function_ref @default_arg : $@convention(c) (Int) -> () // user: %20
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// CHECK-DAG: apply [[F7]]([[DEFAULT_V]]) : $@convention(c) (Int) -> ()
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defaultArg()
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}
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main()
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