Tests: Upstream ios_available_rawvalue_enum_on_visionos.swift.

Author: tshortli

test/SILGen/ios_available_rawvalue_enum_on_visionos.swift

@@ -0,0 +1,35 @@
+// Mock SDK will contain an appropriate SDKSettings and a loadable stdlib
+// RUN: %empty-directory(%t/mock-sdk)
+// RUN: %empty-directory(%t/mock-sdk/usr/lib/swift)
+// RUN: cp -r %test-resource-dir/xros/Swift.swiftmodule %t/mock-sdk/usr/lib/swift/Swift.swiftmodule
+// RUN: cp %S/Inputs/mock-visionos-sdk/SDKSettings.json %t/mock-sdk/SDKSettings.json
+// RUN: %swift -emit-sil -parse-as-library %s -target arm64-apple-xros1.0 -sdk %t/mock-sdk -I %t/mock-sdk/usr/lib/swift/ -verify
+// RUN: %swift -emit-silgen -parse-as-library %s -target arm64-apple-xros1.0 -sdk %t/mock-sdk -I %t/mock-sdk/usr/lib/swift/ -o %t/ios_available_rawvalue_enum_on_visionos.sil
+// RUN: %FileCheck %s < %t/ios_available_rawvalue_enum_on_visionos.sil
+
+// REQUIRES: OS=xros
+
+// CHECK-LABEL: // Metasyntactics.init(rawValue:)
+// Ensure that no OS version check is generated because the current platform falls under the wildcard '*'
+// CHECK-NOT: function_ref @$ss26_stdlib_isOSVersionAtLeastyBi1_Bw_BwBwtF
+public enum Metasyntactics: String, RawRepresentable {
+    case foo
+    @available(iOS 17.0, *)
+    case bar
+    @available(iOS 99.0, *)
+    case baz
+    @available(iOS 1.0, *)
+    case qux
+    @available(iOS 16.0, *)
+    case quux
+    @available(iOS 999.9.9, *)    
+    case corge
+    @available(iOS 18.0, *)    
+    case grault
+    case garply
+    case waldo
+    case fred
+    case plugh
+    case xyzzy
+    case thud
+}