| // RUN: %clang_cc1 -emit-llvm %s -o - -cxx-abi microsoft -triple=i386-pc-win32 -fno-rtti > %t 2>&1 |
| // RUN: FileCheck %s < %t |
| // Using a different check prefix as the inline destructors might be placed |
| // anywhere in the output. |
| // RUN: FileCheck --check-prefix=DTORS %s < %t |
| |
| class A { |
| public: |
| A() { } |
| ~A() { } |
| }; |
| |
| void no_constructor_destructor_infinite_recursion() { |
| A a; |
| |
| // CHECK: define linkonce_odr x86_thiscallcc %class.A* @"\01??0A@@QAE@XZ"(%class.A* %this) |
| // CHECK: [[THIS_ADDR:%[.0-9A-Z_a-z]+]] = alloca %class.A*, align 4 |
| // CHECK-NEXT: store %class.A* %this, %class.A** [[THIS_ADDR]], align 4 |
| // CHECK-NEXT: [[T1:%[.0-9A-Z_a-z]+]] = load %class.A** [[THIS_ADDR]] |
| // CHECK-NEXT: ret %class.A* [[T1]] |
| // CHECK-NEXT: } |
| |
| // Make sure that the destructor doesn't call itself: |
| // CHECK: define {{.*}} @"\01??1A@@QAE@XZ" |
| // CHECK-NOT: call void @"\01??1A@@QAE@XZ" |
| // CHECK: ret |
| } |
| |
| struct B { |
| virtual ~B() { |
| // Complete destructor first: |
| // DTORS: define {{.*}} x86_thiscallcc void @"\01??1B@@UAE@XZ"(%struct.B* %this) |
| |
| // Then, the scalar deleting destructor (used in the vtable): |
| // DTORS: define {{.*}} x86_thiscallcc void @"\01??_GB@@UAEPAXI@Z"(%struct.B* %this, i1 zeroext %should_call_delete) |
| // DTORS: %[[FROMBOOL:[0-9a-z]+]] = zext i1 %should_call_delete to i8 |
| // DTORS-NEXT: store i8 %[[FROMBOOL]], i8* %[[SHOULD_DELETE_VAR:[0-9a-z]+]], align 1 |
| // DTORS: %[[SHOULD_DELETE_VALUE:[0-9a-z]+]] = load i8* %[[SHOULD_DELETE_VAR]] |
| // DTORS: call x86_thiscallcc void @"\01??1B@@UAE@XZ"(%struct.B* %[[THIS:[0-9a-z]+]]) |
| // DTORS-NEXT: %[[CONDITION:[0-9]+]] = icmp eq i8 %[[SHOULD_DELETE_VALUE]], 0 |
| // DTORS-NEXT: br i1 %[[CONDITION]], label %[[CONTINUE_LABEL:[0-9a-z._]+]], label %[[CALL_DELETE_LABEL:[0-9a-z._]+]] |
| // |
| // DTORS: [[CALL_DELETE_LABEL]] |
| // DTORS-NEXT: %[[THIS_AS_VOID:[0-9a-z]+]] = bitcast %struct.B* %[[THIS]] to i8* |
| // DTORS-NEXT: call void @"\01??3@YAXPAX@Z"(i8* %[[THIS_AS_VOID]]) nounwind |
| // DTORS-NEXT: br label %[[CONTINUE_LABEL]] |
| // |
| // DTORS: [[CONTINUE_LABEL]] |
| // DTORS-NEXT: ret void |
| } |
| virtual void foo(); |
| }; |
| |
| // Emits the vftable in the output. |
| void B::foo() {} |
| |
| void check_vftable_offset() { |
| B b; |
| // The vftable pointer should point at the beginning of the vftable. |
| // CHECK: [[THIS_PTR:%[0-9]+]] = bitcast %struct.B* {{.*}} to i8*** |
| // CHECK: store i8** getelementptr inbounds ([2 x i8*]* @"\01??_7B@@6B@", i64 0, i64 0), i8*** [[THIS_PTR]] |
| } |
| |
| // FIXME: Enable the following block and add expectations when calls |
| // to virtual complete dtor are supported. |
| #if 0 |
| void call_complete_dtor(B *obj_ptr) { |
| obj_ptr->~B(); |
| } |
| #endif |
| |
| void call_deleting_dtor(B *obj_ptr) { |
| // FIXME: Add CHECKs when calls to virtual deleting dtor are generated properly. |
| delete obj_ptr; |
| } |
| |
| struct C { |
| static int foo(); |
| |
| C() { |
| static int ctor_static = foo(); |
| // CHECK that the static in the ctor gets mangled correctly: |
| // CHECK: @"\01?ctor_static@?1???0C@@QAE@XZ@4HA" |
| } |
| ~C() { |
| static int dtor_static = foo(); |
| // CHECK that the static in the dtor gets mangled correctly: |
| // CHECK: @"\01?dtor_static@?1???1C@@QAE@XZ@4HA" |
| } |
| }; |
| |
| void use_C() { C c; } |