fix test case for concurrency availability

Author: WANGJIEKE

test/Interop/SwiftToCxx/functions/swift-no-expose-unsupported-func.swift renamed to test/Interop/SwiftToCxx/functions/swift-no-expose-unsupported-alwaysEmitInClient-func.swift

@@ -5,26 +5,17 @@
 // RUN: %check-interop-cxx-header-in-clang(%t/functions.h)
 
 // CHECK-NOT: SWIFT_EXTERN bool $s9Functions24alwaysEmitIntoClientFuncyS2bF(bool x) SWIFT_NOEXCEPT SWIFT_CALL; // alwaysEmitIntoClientFunc(_:)
-// CHECK-NOT: SWIFT_EXTERN double $s9Functions9asyncFuncyS2dYaF(double x) SWIFT_NOEXCEPT SWIFT_CALL; // asyncFunc(_:)
 
 // CHECK:       namespace Functions {
 // CHECK-EMPTY:
 // CHECK-EMPTY:
 // CHECK-EMPTY:
 // CHECK-EMPTY:
-// CHECK-EMPTY:
-// CHECK-EMPTY:
 // CHECK-NEXT:  } // namespace Functions
 
 // CHECK-NOT: inline bool alwaysEmitIntoClientFunc(bool x) noexcept SWIFT_WARN_UNUSED_RESULT {
 // CHECK-NOT:   return _impl::$s9Functions24alwaysEmitIntoClientFuncyS2bF(x);
 // CHECK-NOT: }
 
-// CHECK-NOT: inline double asyncFunc(double x) noexcept SWIFT_WARN_UNUSED_RESULT {
-// CHECK-NOT:   return _impl::$s9Functions9asyncFuncyS2dYaF(x);
-// CHECK-NOT: }
-
-public func asyncFunc(_ x: Double) async -> Double { return 2 * x }
-
 @_alwaysEmitIntoClient
 public func alwaysEmitIntoClientFunc(_ x: Bool) -> Bool { return !x }

test/Interop/SwiftToCxx/functions/swift-no-expose-unsupported-async-func.swift

@@ -0,0 +1,22 @@
+// RUN: %empty-directory(%t)
+// RUN: %target-swift-frontend %s -typecheck -module-name Functions -clang-header-expose-public-decls -emit-clang-header-path %t/functions.h
+// RUN: %FileCheck %s < %t/functions.h
+
+// RUN: %check-interop-cxx-header-in-clang(%t/functions.h)
+
+// CHECK-NOT: SWIFT_EXTERN double $s9Functions9asyncFuncyS2dYaF(double x) SWIFT_NOEXCEPT SWIFT_CALL; // asyncFunc(_:)
+
+// CHECK:       namespace Functions {
+// CHECK-EMPTY:
+// CHECK-EMPTY:
+// CHECK-EMPTY:
+// CHECK-EMPTY:
+// CHECK-NEXT:  } // namespace Functions
+
+// CHECK-NOT: inline double asyncFunc(double x) noexcept SWIFT_WARN_UNUSED_RESULT {
+// CHECK-NOT:   return _impl::$s9Functions9asyncFuncyS2dYaF(x);
+// CHECK-NOT: }
+
+// REQUIRES: concurrency
+
+public func asyncFunc(_ x: Double) async -> Double { return 2 * x }