Add support for -fvisibility-ms-compat.

We treat this as an alternative to -fvisibility=<?>
which changes the default value visibility to "hidden"
and the default type visibility to "default".

Expose a -cc1 option for changing the default type
visibility, repurposing -fvisibility as the default
value visibility option (also setting type visibility
from it in the absence of a specific option).

rdar://13079314

llvm-svn: 175480

1 files changed, 112 insertions, 0 deletions

diff --git a/clang/test/CodeGenCXX/visibility-ms-compat.cpp b/clang/test/CodeGenCXX/visibility-ms-compat.cpp
new file mode 100644
index 00000000000..58a8fed62e0
--- /dev/null
+++ b/clang/test/CodeGenCXX/visibility-ms-compat.cpp
@@ -0,0 +1,112 @@
+// RUN: %clang_cc1 %s -std=c++11 -triple=x86_64-apple-darwin10 -fvisibility hidden -ftype-visibility default -emit-llvm -o %t
+// RUN: FileCheck %s < %t
+// RUN: FileCheck -check-prefix=CHECK-GLOBAL %s < %t
+
+// The two visibility options above are how we translate
+// -fvisibility-ms-compat in the driver.
+
+// rdar://13079314
+
+#define HIDDEN __attribute__((visibility("hidden")))
+#define PROTECTED __attribute__((visibility("protected")))
+#define DEFAULT __attribute__((visibility("default")))
+
+namespace std {
+  class type_info;
+};
+
+namespace test0 {
+  struct A {
+    static void foo();
+    static void bar();
+  };
+
+  void A::foo() { bar(); }
+  // CHECK: define hidden void @_ZN5test01A3fooEv()
+  // CHECK: declare void @_ZN5test01A3barEv()
+
+  const std::type_info &ti = typeid(A);
+  // CHECK-GLOBAL: @_ZTSN5test01AE = linkonce_odr constant
+  // CHECK-GLOBAL: @_ZTIN5test01AE = linkonce_odr unnamed_addr constant
+  // CHECK-GLOBAL: @_ZN5test02tiE = hidden constant
+}
+
+namespace test1 {
+  struct HIDDEN A {
+    static void foo();
+    static void bar();
+  };
+
+  void A::foo() { bar(); }
+  // CHECK: define hidden void @_ZN5test11A3fooEv()
+  // CHECK: declare hidden void @_ZN5test11A3barEv()
+
+  const std::type_info &ti = typeid(A);
+  // CHECK-GLOBAL: @_ZTSN5test11AE = linkonce_odr hidden constant
+  // CHECK-GLOBAL: @_ZTIN5test11AE = linkonce_odr hidden unnamed_addr constant
+  // CHECK-GLOBAL: @_ZN5test12tiE = hidden constant
+}
+
+namespace test2 {
+  struct DEFAULT A {
+    static void foo();
+    static void bar();
+  };
+
+  void A::foo() { bar(); }
+  // CHECK: define void @_ZN5test21A3fooEv()
+  // CHECK: declare void @_ZN5test21A3barEv()
+
+  const std::type_info &ti = typeid(A);
+  // CHECK-GLOBAL: @_ZTSN5test21AE = linkonce_odr constant
+  // CHECK-GLOBAL: @_ZTIN5test21AE = linkonce_odr unnamed_addr constant
+  // CHECK-GLOBAL: @_ZN5test22tiE = hidden constant
+}
+
+namespace test3 {
+  struct A { int x; };
+  template <class T> struct B {
+    static void foo() { bar(); }
+    static void bar();
+  };
+
+  template void B<A>::foo();
+  // CHECK: define weak_odr hidden void @_ZN5test31BINS_1AEE3fooEv()
+  // CHECK: declare void @_ZN5test31BINS_1AEE3barEv()
+
+  const std::type_info &ti = typeid(B<A>);
+  // CHECK-GLOBAL: @_ZTSN5test31BINS_1AEEE = linkonce_odr constant
+  // CHECK-GLOBAL: @_ZTIN5test31BINS_1AEEE = linkonce_odr unnamed_addr constant
+}
+
+namespace test4 {
+  struct A { int x; };
+  template <class T> struct DEFAULT B {
+    static void foo() { bar(); }
+    static void bar();
+  };
+
+  template void B<A>::foo();
+  // CHECK: define weak_odr void @_ZN5test41BINS_1AEE3fooEv()
+  // CHECK: declare void @_ZN5test41BINS_1AEE3barEv()
+
+  const std::type_info &ti = typeid(B<A>);
+  // CHECK-GLOBAL: @_ZTSN5test41BINS_1AEEE = linkonce_odr constant
+  // CHECK-GLOBAL: @_ZTIN5test41BINS_1AEEE = linkonce_odr unnamed_addr constant
+}
+
+namespace test5 {
+  struct A { int x; };
+  template <class T> struct HIDDEN B {
+    static void foo() { bar(); }
+    static void bar();
+  };
+
+  template void B<A>::foo();
+  // CHECK: define weak_odr hidden void @_ZN5test51BINS_1AEE3fooEv()
+  // CHECK: declare hidden void @_ZN5test51BINS_1AEE3barEv()
+
+  const std::type_info &ti = typeid(B<A>);
+  // CHECK-GLOBAL: @_ZTSN5test51BINS_1AEEE = linkonce_odr hidden constant
+  // CHECK-GLOBAL: @_ZTIN5test51BINS_1AEEE = linkonce_odr hidden unnamed_addr constant
+}