microsoft-abi-structors.cpp revision 6c9dccd7c437d091a911b749eb0b96f7baea7715 
1// RUN: %clang_cc1 -emit-llvm %s -o - -cxx-abi microsoft -triple=i386-pc-win32 | FileCheck %s
2
3class A {
4 public:
5  A() { }
6  ~A() { }
7};
8
9void no_constructor_destructor_infinite_recursion() {
10  A a;
11
12// CHECK:      define linkonce_odr x86_thiscallcc %class.A* @"\01??0A@@QAE@XZ"(%class.A* %this)
13// CHECK:        [[THIS_ADDR:%[.0-9A-Z_a-z]+]] = alloca %class.A*, align 4
14// CHECK-NEXT:   store %class.A* %this, %class.A** [[THIS_ADDR]], align 4
15// CHECK-NEXT:   [[T1:%[.0-9A-Z_a-z]+]] = load %class.A** [[THIS_ADDR]]
16// CHECK-NEXT:   ret %class.A* [[T1]]
17// CHECK-NEXT: }
18
19// Make sure that the destructor doesn't call itself:
20// CHECK: define {{.*}} @"\01??1A@@QAE@XZ"
21// CHECK-NOT: call void @"\01??1A@@QAE@XZ"
22// CHECK: ret
23}
24
25struct B {
26  virtual ~B();
27  virtual void foo();
28};
29
30void check_vftable_offset() {
31  B b;
32// The vftable pointer should point at the beginning of the vftable.
33// CHECK: [[THIS_PTR:%[0-9]+]] = bitcast %struct.B* {{.*}} to i8***
34// CHECK: store i8** getelementptr inbounds ([2 x i8*]* @"\01??_7B@@6B@", i64 0, i64 0), i8*** [[THIS_PTR]]
35}
36