Reland "Fix vtable not receiving hidden visibility when using push(visibility)"

I had to reland this change in order to make the test work on windows

This change should resolve https://bugs.llvm.org/show_bug.cgi?id=35022

https://reviews.llvm.org/D39627

llvm-svn: 319269

1 files changed, 20 insertions, 0 deletions

diff --git a/clang/test/CodeGen/push-hidden-visibility-subclass.cpp b/clang/test/CodeGen/push-hidden-visibility-subclass.cpp
new file mode 100644
index 00000000000..82bf65309ab
--- /dev/null
+++ b/clang/test/CodeGen/push-hidden-visibility-subclass.cpp
@@ -0,0 +1,20 @@
+// RUN: %clang_cc1 -triple x86_64-linux-unknown -emit-llvm %s -o - | FileCheck %s
+
+#pragma GCC visibility push(hidden)
+
+struct Base {
+  virtual ~Base() = default;
+  virtual void* Alloc() = 0;
+};
+
+class Child : public Base {
+public:
+  Child() = default;
+  void* Alloc();
+};
+
+void test() {
+  Child x;
+}
+
+// CHECK: @_ZTV5Child = external hidden unnamed_addr constant