Test static member functions

test/Interop/Cxx/static/Inputs/module.modulemap

@@ -9,3 +9,7 @@ module StaticMemberVar {
 module InlineStaticMemberVar {
   header "inline-static-member-var.h"
 }
+
+module StaticMemberFunc {
+  header "static-member-func.h"
+}

test/Interop/Cxx/static/Inputs/static-member-func.cc

@@ -0,0 +1,6 @@
+#include "static-member-func.h"
+
+int WithStaticMemberFunc::staticMemberFunc() { return 1234; }
+WithStaticMemberFunc::Func WithStaticMemberFunc::getStaticMemberFuncAddress() {
+  return &WithStaticMemberFunc::staticMemberFunc;
+}

test/Interop/Cxx/static/Inputs/static-member-func.h

@@ -0,0 +1,6 @@
+class WithStaticMemberFunc {
+public:
+  static int staticMemberFunc();
+  typedef int (*Func)();
+  static Func getStaticMemberFuncAddress();
+};

test/Interop/Cxx/static/static-member-func-irgen.swift

@@ -0,0 +1,23 @@
+// RUN: %target-swift-emit-ir %s -I %S/Inputs -enable-cxx-interop | %FileCheck %s
+
+import StaticMemberFunc
+
+public func callStaticMemberFunc() -> CInt {
+  return WithStaticMemberFunc.staticMemberFunc()
+}
+
+// CHECK: define {{(protected |dllexport )?}}swiftcc i32 @"$s4main20callStaticMemberFuncs5Int32VyF"()
+// CHECK: [[VALUE:%.*]] = call i32 @{{_ZN20WithStaticMemberFunc16staticMemberFuncEv|"\?staticMemberFunc@WithStaticMemberFunc@@SAHXZ"}}()
+// CHECK: ret i32 [[VALUE]]
+
+// CHECK: declare {{(dso_local )?}}i32 @{{_ZN20WithStaticMemberFunc16staticMemberFuncEv|"\?staticMemberFunc@WithStaticMemberFunc@@SAHXZ"}}()
+
+public func callStaticMemberFuncAddr() -> CInt {
+  return WithStaticMemberFunc.getStaticMemberFuncAddress()!()
+}
+
+// CHECK: define {{(protected |dllexport )?}}swiftcc i32 @"$s4main24callStaticMemberFuncAddrs5Int32VyF"()
+// CHECK: call i32 ()* @{{_ZN20WithStaticMemberFunc26getStaticMemberFuncAddressEv|"\?getStaticMemberFuncAddress@WithStaticMemberFunc@@SAP6AHXZXZ"}}()
+
+// CHECK: declare {{(dso_local )?}}i32 ()* @{{_ZN20WithStaticMemberFunc26getStaticMemberFuncAddressEv|"\?getStaticMemberFuncAddress@WithStaticMemberFunc@@SAP6AHXZXZ"}}()
+

test/Interop/Cxx/static/static-member-func-silgen.swift

@@ -0,0 +1,24 @@
+// RUN: %target-swift-emit-sil %s -I %S/Inputs -enable-cxx-interop | %FileCheck %s
+
+import StaticMemberFunc
+
+func callStaticMemberFunc() -> CInt {
+  return WithStaticMemberFunc.staticMemberFunc()
+}
+
+// CHECK: sil hidden @$s4main20callStaticMemberFuncs5Int32VyF : $@convention(thin) () -> Int32 {
+// CHECK: [[FUNC:%.*]] = function_ref @{{_ZN20WithStaticMemberFunc16staticMemberFuncEv|\?staticMemberFunc@WithStaticMemberFunc@@SAHXZ}} : $@convention(c) () -> Int32
+// CHECK: [[VALUE:%.*]] = apply [[FUNC]]() : $@convention(c) () -> Int32
+// CHECK: return [[VALUE]] : $Int32
+
+// CHECK: sil [clang WithStaticMemberFunc.staticMemberFunc] @{{_ZN20WithStaticMemberFunc16staticMemberFuncEv|\?staticMemberFunc@WithStaticMemberFunc@@SAHXZ}} : $@convention(c) () -> Int32
+
+func callStaticMemberFuncAddr() -> CInt {
+  return WithStaticMemberFunc.getStaticMemberFuncAddress()!()
+}
+
+// CHECK: sil hidden @$s4main24callStaticMemberFuncAddrs5Int32VyF : $@convention(thin) () -> Int32
+// CHECK: [[FUNC:%.*]] = function_ref @{{_ZN20WithStaticMemberFunc26getStaticMemberFuncAddressEv|\?getStaticMemberFuncAddress@WithStaticMemberFunc@@SAP6AHXZXZ}} : $@convention(c) () -> Optional<@convention(c) () -> Int32>
+// CHECK: [[VALUE:%.*]] = apply [[FUNC]]() : $@convention(c) () -> Optional<@convention(c) () -> Int32>
+
+// CHECK: sil [clang WithStaticMemberFunc.getStaticMemberFuncAddress] @{{_ZN20WithStaticMemberFunc26getStaticMemberFuncAddressEv|\?getStaticMemberFuncAddress@WithStaticMemberFunc@@SAP6AHXZXZ}} : $@convention(c) () -> Optional<@convention(c) () -> Int32>

test/Interop/Cxx/static/static-member-func.swift

@@ -0,0 +1,20 @@
+// RUN: %empty-directory(%t)
+// RUN: %target-clang -c %S/Inputs/static-member-func.cc -I %S/Inputs -o %t/static-member-func.o -std=c++11
+// RUN: %target-build-swift %s -I %S/Inputs -o %t/statics %t/static-member-func.o -Xfrontend -enable-cxx-interop -Xcc -std=c++11
+// RUN: %target-codesign %t/statics
+// RUN: %target-run %t/statics
+//
+// REQUIRES: executable_test
+
+import StaticMemberFunc
+import StdlibUnittest
+
+var StaticMemberFuncTestSuite = TestSuite("StaticMemberFuncTestSuite")
+
+StaticMemberFuncTestSuite.test("call-static-member-func") {
+  expectEqual(
+    1234,
+    WithStaticMemberFunc.staticMemberFunc())
+}
+
+runAllTests()