clang/test/CodeGenCXX/microsoft-abi-extern-template.cpp

   1 // RUN: %clang_cc1 -fno-rtti-data -O1 -disable-llvm-passes %s -emit-llvm -o - -triple x86_64-windows-msvc | FileCheck %s
   2
   3 // Even though Foo<int> has an extern template declaration, we have to emit our
   4 // own copy the vftable when emitting the available externally constructor.
   5
   6 // CHECK: @"??_7?$Foo@H@@6B@" = linkonce_odr unnamed_addr constant { [1 x ptr] } { [1 x ptr] [
   7 // CHECK-SAME:   ptr @"??_G?$Foo@H@@UEAAPEAXI@Z"
   8 // CHECK-SAME: ] }, comdat
   9
  10 // CHECK-LABEL: define dso_local noundef ptr @"?f@@YAPEAU?$Foo@H@@XZ"()
  11 // CHECK: call noundef ptr @"??0?$Foo@H@@QEAA@XZ"(ptr {{[^,]*}} %{{.*}})
  12
  13 // CHECK: define available_externally dso_local noundef ptr @"??0?$Foo@H@@QEAA@XZ"(ptr {{[^,]*}} returned align 8 dereferenceable(8) %this)
  14 // CHECK:   store {{.*}} @"??_7?$Foo@H@@6B@"
  15
  16 // CHECK: define linkonce_odr dso_local noundef ptr @"??_G?$Foo@H@@UEAAPEAXI@Z"(ptr {{[^,]*}} %this, i32 noundef %should_call_delete)
  17
  18 struct Base {
  19   virtual ~Base();
  20 };
  21 template <typename T> struct Foo : Base {
  22   Foo() {}
  23 };
  24 extern template class Foo<int>;
  25 Foo<int> *f() { return new Foo<int>(); }