Pass availability to _SwiftifyImport

This was only passed to _SwiftifyImportProtocol, now it is also
passed to _SwiftifyImport. This results in @available being attached to
generated overloads that use [Mutable][Raw]Span.

Author: hnrklssn

lib/ClangImporter/ImportDecl.cpp

@@ -9332,6 +9332,7 @@ void ClangImporter::Implementation::swiftify(
     SwiftifyInfoPrinter printer(getClangASTContext(), SwiftContext, out);
     if (!swiftifyImpl(printer, MappedDecl))
       return;
+    printer.printAvailability();
     printer.printTypeMapping();
   }
 

test/Interop/C/swiftify-import/Inputs/counted-by-noescape.h

@@ -7,7 +7,7 @@
 void simple(int len, int * __counted_by(len) __noescape p);
 
 void swiftAttr(int len, int *p) __attribute__((
-    swift_attr("@_SwiftifyImport(.countedBy(pointer: .param(2), count: \"len\"), .nonescaping(pointer: .param(2)))")));
+    swift_attr("@_SwiftifyImport(.countedBy(pointer: .param(2), count: \"len\"), .nonescaping(pointer: .param(2)), availability: [\"MutableSpan\": \"macOS 9999, *\"])")));
 
 void shared(int len, int * __counted_by(len) __noescape p1, int * __counted_by(len) __noescape p2);
 

test/Interop/C/swiftify-import/Inputs/sized-by-noescape.h

@@ -6,7 +6,7 @@
 void simple(int len, const void * __sized_by(len) __noescape p);
 
 void swiftAttr(int len, const void *p) __attribute__((swift_attr(
-    "@_SwiftifyImport(.sizedBy(pointer: .param(2), size: \"len\"), .nonescaping(pointer: .param(2)))")));
+    "@_SwiftifyImport(.sizedBy(pointer: .param(2), size: \"len\"), .nonescaping(pointer: .param(2)), availability: [\"Span\": \"macOS 9999, *\"])")));
 
 void shared(int len, const void * __sized_by(len) __noescape p1, const void * __sized_by(len) __noescape p2);
 

test/Interop/C/swiftify-import/counted-by-noescape.swift

@@ -11,21 +11,28 @@
 
 import CountedByNoEscapeClang
 
-// CHECK:      @lifetime(p: copy p)
+// CHECK:      @available(macOS 9999, *)
+// CHECK-NEXT: @lifetime(p: copy p)
 // CHECK-NEXT: @_alwaysEmitIntoClient public func complexExpr(_ len: Int32, _ offset: Int32, _ p: inout MutableSpan<Int32>)
+// CHECK-NEXT: @available(macOS 9999, *)
 // CHECK-NEXT: @lifetime(p: copy p)
 // CHECK-NEXT: @_alwaysEmitIntoClient public func nonnull(_ p: inout MutableSpan<Int32>)
+// CHECK-NEXT: @available(macOS 9999, *)
 // CHECK-NEXT: @lifetime(p: copy p)
 // CHECK-NEXT: @_alwaysEmitIntoClient public func nullUnspecified(_ p: inout MutableSpan<Int32>)
+// CHECK-NEXT: @available(macOS 9999, *)
 // CHECK-NEXT: @lifetime(copy p)
 // CHECK-NEXT: @lifetime(p: copy p)
 // CHECK-NEXT: @_alwaysEmitIntoClient public func returnLifetimeBound(_ len1: Int32, _ p: inout MutableSpan<Int32>) -> MutableSpan<Int32>
 // CHECK-NEXT: @_alwaysEmitIntoClient @_disfavoredOverload public func returnPointer(_ len: Int32) -> UnsafeMutableBufferPointer<Int32>
+// CHECK-NEXT: @available(macOS 9999, *)
 // CHECK-NEXT: @lifetime(p1: copy p1)
 // CHECK-NEXT: @lifetime(p2: copy p2)
 // CHECK-NEXT: @_alwaysEmitIntoClient public func shared(_ len: Int32, _ p1: inout MutableSpan<Int32>, _ p2: inout MutableSpan<Int32>)
+// CHECK-NEXT: @available(macOS 9999, *)
 // CHECK-NEXT: @lifetime(p: copy p)
 // CHECK-NEXT: @_alwaysEmitIntoClient public func simple(_ p: inout MutableSpan<Int32>)
+// CHECK-NEXT: @available(macOS 9999, *)
 // CHECK-NEXT: @lifetime(p: copy p)
 // CHECK-NEXT: @_alwaysEmitIntoClient public func swiftAttr(_ p: inout MutableSpan<Int32>)
 

test/Interop/C/swiftify-import/sized-by-noescape.swift

@@ -9,11 +9,18 @@
 // Check that ClangImporter correctly infers and expands @_SwiftifyImport macros for functions with __sized_by __noescape parameters.
 import SizedByNoEscapeClang
 
-// CHECK:      @_alwaysEmitIntoClient public func complexExpr(_ len: Int{{.*}}, _ offset: Int{{.*}}, _ p: RawSpan)
+// CHECK:      @available(macOS 9999, *)
+// CHECK-NEXT: @_alwaysEmitIntoClient public func complexExpr(_ len: Int{{.*}}, _ offset: Int{{.*}}, _ p: RawSpan)
+// CHECK-NEXT: @available(macOS 9999, *)
 // CHECK-NEXT: @_alwaysEmitIntoClient public func nonnull(_ p: RawSpan)
+// CHECK-NEXT: @available(macOS 9999, *)
 // CHECK-NEXT: @_alwaysEmitIntoClient public func nullUnspecified(_  p: RawSpan)
+// CHECK-NEXT: @available(macOS 9999, *)
 // CHECK-NEXT: @_alwaysEmitIntoClient public func opaque(_  p: RawSpan)
 // CHECK-NEXT: @_alwaysEmitIntoClient @_disfavoredOverload public func returnPointer(_ len: Int{{.*}}) -> UnsafeRawBufferPointer
+// CHECK-NEXT: @available(macOS 9999, *)
 // CHECK-NEXT: @_alwaysEmitIntoClient public func shared(_ len: Int{{.*}}, _ p1: RawSpan, _ p2: RawSpan)
+// CHECK-NEXT: @available(macOS 9999, *)
 // CHECK-NEXT: @_alwaysEmitIntoClient public func simple(_  p: RawSpan)
+// CHECK-NEXT: @available(macOS 9999, *)
 // CHECK-NEXT: @_alwaysEmitIntoClient public func swiftAttr(_  p: RawSpan)