clang/test/CodeGenCXX/dso-handle-custom.cpp

   1 // RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm -fexceptions %s -o - | FileCheck %s --check-prefixes CHECK,CHECK-DEFAULT
   2 // RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm -fexceptions %s -o - -DHIDDEN | FileCheck %s --check-prefixes CHECK,CHECK-HIDDEN
   3
   4 class A {
   5 public:
   6   ~A();
   7 } a;
   8
   9 // CHECK-DEFAULT: @__dso_handle = global ptr @__dso_handle, align 8
  10 // CHECK-HIDDEN: @__dso_handle = hidden global ptr @__dso_handle, align 8
  11 // CHECK: define internal void @__cxx_global_var_init()
  12 // CHECK:   call i32 @__cxa_atexit({{.*}}, {{.*}}, ptr @__dso_handle)
  13
  14 #ifdef HIDDEN
  15 void *__dso_handle __attribute__((__visibility__("hidden"))) = &__dso_handle;
  16 #else
  17 void *__dso_handle = &__dso_handle;
  18 #endif
  19
  20 void use(void *);
  21 void use_dso_handle() {
  22   use(__dso_handle);
  23 }