Tests for #pragma GCC visibility.

llvm-svn: 110316

1 files changed, 72 insertions, 0 deletions

diff --git a/clang/test/CodeGenCXX/pragma-visibility.cpp b/clang/test/CodeGenCXX/pragma-visibility.cpp
new file mode 100644
index 00000000000..05de78670a0
--- /dev/null
+++ b/clang/test/CodeGenCXX/pragma-visibility.cpp
@@ -0,0 +1,72 @@
+// RUN: %clang_cc1 -emit-llvm -o - %s | FileCheck %s
+
+#pragma GCC visibility push(hidden)
+struct x {
+  static int y;
+};
+#pragma GCC visibility pop
+int x::y = 10;
+// CHECK: @_ZN1x1yE = hidden global
+
+#pragma GCC visibility push(hidden)
+struct __attribute((visibility("default"))) x2 {
+  static int y;
+};
+int x2::y = 10;
+// CHECK: @_ZN2x21yE = global
+#pragma GCC visibility pop
+
+#pragma GCC visibility push(hidden)
+struct x3 {
+  static int y;
+} __attribute((visibility("default")));
+int x3::y = 10;
+// CHECK: @_ZN2x31yE = global
+#pragma GCC visibility pop
+
+#pragma GCC visibility push(hidden)
+template<class T> struct x4 {
+  static int y;
+};
+#pragma GCC visibility pop
+template<> int x4<int>::y = 10;
+// CHECK: @_ZN2x4IiE1yE = hidden global i32
+
+#pragma GCC visibility push(hidden)
+template<int x> int f() { return x; }
+extern "C" int g() { return f<3>(); }
+#pragma GCC visibility pop
+// CHECK: define hidden i32 @g()
+// CHECK: define linkonce_odr hidden i32 @_Z1fILi3EEiv()
+
+#pragma GCC visibility push(hidden)
+template<class T> struct x5 {
+  void y();
+};
+#pragma GCC visibility pop
+template<> void x5<int>::y() {}
+// CHECK: define hidden void @_ZN2x5IiE1yEv
+
+#pragma GCC visibility push(hidden)
+namespace n __attribute((visibility("default"))) {
+  void f() {}
+  // CHECK: define void @_ZN1n1fEv
+}
+#pragma GCC visibility pop
+
+namespace n __attribute((visibility("default")))  {
+  extern int foofoo; // FIXME: Shouldn't be necessary, but otherwise the pragma
+                     //        gets to Sema before the namespace!
+#pragma GCC visibility push(hidden)
+  void g() {}
+  // CHECK: define hidden void @_ZN1n1gEv
+#pragma GCC visibility pop
+}
+
+namespace n __attribute((visibility("hidden"))) {
+  extern int foofoo; // FIXME: Shouldn't be necessary, but otherwise the pragma
+                     //        gets to Sema before the namespace!
+  #pragma GCC visibility pop
+  void h() {}
+  // CHECK: define void @_ZN1n1hEv
+}