| // RUN: %clang_cc1 -emit-llvm %s -o - -cxx-abi microsoft -triple=i386-pc-win32 -fno-rtti > %t |
| // RUN: FileCheck %s < %t |
| // vftables are emitted very late, so do another pass to try to keep the checks |
| // in source order. |
| // RUN: FileCheck --check-prefix DTORS %s < %t |
| // |
| // RUN: %clang_cc1 -emit-llvm %s -o - -cxx-abi microsoft -triple=x86_64-pc-win32 -fno-rtti | FileCheck --check-prefix DTORS-X64 %s |
| |
| namespace basic { |
| |
| class A { |
| public: |
| A() { } |
| ~A(); |
| }; |
| |
| void no_constructor_destructor_infinite_recursion() { |
| A a; |
| |
| // CHECK: define linkonce_odr x86_thiscallcc %"class.basic::A"* @"\01??0A@basic@@QAE@XZ"(%"class.basic::A"* returned %this) |
| // CHECK: [[THIS_ADDR:%[.0-9A-Z_a-z]+]] = alloca %"class.basic::A"*, align 4 |
| // CHECK-NEXT: store %"class.basic::A"* %this, %"class.basic::A"** [[THIS_ADDR]], align 4 |
| // CHECK-NEXT: [[T1:%[.0-9A-Z_a-z]+]] = load %"class.basic::A"** [[THIS_ADDR]] |
| // CHECK-NEXT: ret %"class.basic::A"* [[T1]] |
| // CHECK-NEXT: } |
| } |
| |
| A::~A() { |
| // Make sure that the destructor doesn't call itself: |
| // CHECK: define {{.*}} @"\01??1A@basic@@QAE@XZ" |
| // CHECK-NOT: call void @"\01??1A@basic@@QAE@XZ" |
| // CHECK: ret |
| } |
| |
| struct B { |
| B(); |
| }; |
| |
| // Tests that we can define constructors outside the class (PR12784). |
| B::B() { |
| // CHECK: define x86_thiscallcc %"struct.basic::B"* @"\01??0B@basic@@QAE@XZ"(%"struct.basic::B"* returned %this) |
| // CHECK: ret |
| } |
| |
| struct C { |
| virtual ~C() { |
| // DTORS: define linkonce_odr x86_thiscallcc void @"\01??_GC@basic@@UAEPAXI@Z"(%"struct.basic::C"* %this, i32 %should_call_delete) |
| // DTORS: store i32 %should_call_delete, i32* %[[SHOULD_DELETE_VAR:[0-9a-z._]+]], align 4 |
| // DTORS: %[[SHOULD_DELETE_VALUE:[0-9a-z._]+]] = load i32* %[[SHOULD_DELETE_VAR]] |
| // DTORS: call x86_thiscallcc void @"\01??1C@basic@@UAE@XZ"(%"struct.basic::C"* %[[THIS:[0-9a-z]+]]) |
| // DTORS-NEXT: %[[CONDITION:[0-9]+]] = icmp eq i32 %[[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.basic::C"* %[[THIS]] to i8* |
| // DTORS-NEXT: call void @"\01??3@YAXPAX@Z"(i8* %[[THIS_AS_VOID]]) |
| // DTORS-NEXT: br label %[[CONTINUE_LABEL]] |
| // |
| // DTORS: [[CONTINUE_LABEL]] |
| // DTORS-NEXT: ret void |
| |
| // Check that we do the mangling correctly on x64. |
| // DTORS-X64: @"\01??_GC@basic@@UEAAPEAXI@Z" |
| } |
| virtual void foo(); |
| }; |
| |
| // Emits the vftable in the output. |
| void C::foo() {} |
| |
| void check_vftable_offset() { |
| C c; |
| // The vftable pointer should point at the beginning of the vftable. |
| // CHECK: [[THIS_PTR:%[0-9]+]] = bitcast %"struct.basic::C"* {{.*}} to [2 x i8*]** |
| // CHECK: store [2 x i8*]* @"\01??_7C@basic@@6B@", [2 x i8*]** [[THIS_PTR]] |
| } |
| |
| void call_complete_dtor(C *obj_ptr) { |
| // CHECK: define void @"\01?call_complete_dtor@basic@@YAXPAUC@1@@Z"(%"struct.basic::C"* %obj_ptr) |
| obj_ptr->~C(); |
| // CHECK: %[[OBJ_PTR_VALUE:.*]] = load %"struct.basic::C"** %{{.*}}, align 4 |
| // CHECK-NEXT: %[[PVTABLE:.*]] = bitcast %"struct.basic::C"* %[[OBJ_PTR_VALUE]] to void (%"struct.basic::C"*, i32)*** |
| // CHECK-NEXT: %[[VTABLE:.*]] = load void (%"struct.basic::C"*, i32)*** %[[PVTABLE]] |
| // CHECK-NEXT: %[[PVDTOR:.*]] = getelementptr inbounds void (%"struct.basic::C"*, i32)** %[[VTABLE]], i64 0 |
| // CHECK-NEXT: %[[VDTOR:.*]] = load void (%"struct.basic::C"*, i32)** %[[PVDTOR]] |
| // CHECK-NEXT: call x86_thiscallcc void %[[VDTOR]](%"struct.basic::C"* %[[OBJ_PTR_VALUE]], i32 0) |
| // CHECK-NEXT: ret void |
| } |
| |
| void call_deleting_dtor(C *obj_ptr) { |
| // CHECK: define void @"\01?call_deleting_dtor@basic@@YAXPAUC@1@@Z"(%"struct.basic::C"* %obj_ptr) |
| delete obj_ptr; |
| // CHECK: %[[OBJ_PTR_VALUE:.*]] = load %"struct.basic::C"** %{{.*}}, align 4 |
| // CHECK: br i1 {{.*}}, label %[[DELETE_NULL:.*]], label %[[DELETE_NOTNULL:.*]] |
| |
| // CHECK: [[DELETE_NOTNULL]] |
| // CHECK-NEXT: %[[PVTABLE:.*]] = bitcast %"struct.basic::C"* %[[OBJ_PTR_VALUE]] to void (%"struct.basic::C"*, i32)*** |
| // CHECK-NEXT: %[[VTABLE:.*]] = load void (%"struct.basic::C"*, i32)*** %[[PVTABLE]] |
| // CHECK-NEXT: %[[PVDTOR:.*]] = getelementptr inbounds void (%"struct.basic::C"*, i32)** %[[VTABLE]], i64 0 |
| // CHECK-NEXT: %[[VDTOR:.*]] = load void (%"struct.basic::C"*, i32)** %[[PVDTOR]] |
| // CHECK-NEXT: call x86_thiscallcc void %[[VDTOR]](%"struct.basic::C"* %[[OBJ_PTR_VALUE]], i32 1) |
| // CHECK: ret void |
| } |
| |
| struct D { |
| static int foo(); |
| |
| D() { |
| static int ctor_static = foo(); |
| // CHECK that the static in the ctor gets mangled correctly: |
| // CHECK: @"\01?ctor_static@?1???0D@basic@@QAE@XZ@4HA" |
| } |
| ~D() { |
| static int dtor_static = foo(); |
| // CHECK that the static in the dtor gets mangled correctly: |
| // CHECK: @"\01?dtor_static@?1???1D@basic@@QAE@XZ@4HA" |
| } |
| }; |
| |
| void use_D() { D c; } |
| |
| } // end namespace basic |
| |
| |
| namespace constructors { |
| |
| struct A { |
| A() {} |
| }; |
| |
| struct B : A { |
| B(); |
| ~B(); |
| }; |
| |
| B::B() { |
| // CHECK: define x86_thiscallcc %"struct.constructors::B"* @"\01??0B@constructors@@QAE@XZ"(%"struct.constructors::B"* returned %this) |
| // CHECK: call x86_thiscallcc %"struct.constructors::A"* @"\01??0A@constructors@@QAE@XZ"(%"struct.constructors::A"* %{{.*}}) |
| // CHECK: ret |
| } |
| |
| struct C : virtual A { |
| C(); |
| }; |
| |
| C::C() { |
| // CHECK: define x86_thiscallcc %"struct.constructors::C"* @"\01??0C@constructors@@QAE@XZ"(%"struct.constructors::C"* returned %this, i32 %is_most_derived) |
| // TODO: make sure this works in the Release build too; |
| // CHECK: store i32 %is_most_derived, i32* %[[IS_MOST_DERIVED_VAR:.*]], align 4 |
| // CHECK: %[[IS_MOST_DERIVED_VAL:.*]] = load i32* %[[IS_MOST_DERIVED_VAR]] |
| // CHECK: %[[SHOULD_CALL_VBASE_CTORS:.*]] = icmp ne i32 %[[IS_MOST_DERIVED_VAL]], 0 |
| // CHECK: br i1 %[[SHOULD_CALL_VBASE_CTORS]], label %[[INIT_VBASES:.*]], label %[[SKIP_VBASES:.*]] |
| // |
| // CHECK: [[INIT_VBASES]] |
| // CHECK-NEXT: %[[this_i8:.*]] = bitcast %"struct.constructors::C"* %{{.*}} to i8* |
| // CHECK-NEXT: %[[vbptr_off:.*]] = getelementptr inbounds i8* %[[this_i8]], i64 0 |
| // CHECK-NEXT: %[[vbptr:.*]] = bitcast i8* %[[vbptr_off]] to [2 x i32]** |
| // CHECK-NEXT: store [2 x i32]* @"\01??_8C@constructors@@7B@", [2 x i32]** %[[vbptr]] |
| // CHECK-NEXT: bitcast %"struct.constructors::C"* %{{.*}} to i8* |
| // CHECK-NEXT: getelementptr inbounds i8* %{{.*}}, i64 4 |
| // CHECK-NEXT: bitcast i8* %{{.*}} to %"struct.constructors::A"* |
| // CHECK-NEXT: call x86_thiscallcc %"struct.constructors::A"* @"\01??0A@constructors@@QAE@XZ"(%"struct.constructors::A"* %{{.*}}) |
| // CHECK-NEXT: br label %[[SKIP_VBASES]] |
| // |
| // CHECK: [[SKIP_VBASES]] |
| // Class C does not define or override methods, so shouldn't change the vfptr. |
| // CHECK-NOT: @"\01??_7C@constructors@@6B@" |
| // CHECK: ret |
| } |
| |
| void create_C() { |
| C c; |
| // CHECK: define void @"\01?create_C@constructors@@YAXXZ"() |
| // CHECK: call x86_thiscallcc %"struct.constructors::C"* @"\01??0C@constructors@@QAE@XZ"(%"struct.constructors::C"* %c, i32 1) |
| // CHECK: ret |
| } |
| |
| struct D : C { |
| D(); |
| }; |
| |
| D::D() { |
| // CHECK: define x86_thiscallcc %"struct.constructors::D"* @"\01??0D@constructors@@QAE@XZ"(%"struct.constructors::D"* returned %this, i32 %is_most_derived) unnamed_addr |
| // CHECK: store i32 %is_most_derived, i32* %[[IS_MOST_DERIVED_VAR:.*]], align 4 |
| // CHECK: %[[IS_MOST_DERIVED_VAL:.*]] = load i32* %[[IS_MOST_DERIVED_VAR]] |
| // CHECK: %[[SHOULD_CALL_VBASE_CTORS:.*]] = icmp ne i32 %[[IS_MOST_DERIVED_VAL]], 0 |
| // CHECK: br i1 %[[SHOULD_CALL_VBASE_CTORS]], label %[[INIT_VBASES:.*]], label %[[SKIP_VBASES:.*]] |
| // |
| // CHECK: [[INIT_VBASES]] |
| // CHECK-NEXT: %[[this_i8:.*]] = bitcast %"struct.constructors::D"* %{{.*}} to i8* |
| // CHECK-NEXT: %[[vbptr_off:.*]] = getelementptr inbounds i8* %[[this_i8]], i64 0 |
| // CHECK-NEXT: %[[vbptr:.*]] = bitcast i8* %[[vbptr_off]] to [2 x i32]** |
| // CHECK-NEXT: store [2 x i32]* @"\01??_8D@constructors@@7B@", [2 x i32]** %[[vbptr]] |
| // CHECK-NEXT: bitcast %"struct.constructors::D"* %{{.*}} to i8* |
| // CHECK-NEXT: getelementptr inbounds i8* %{{.*}}, i64 4 |
| // CHECK-NEXT: bitcast i8* %{{.*}} to %"struct.constructors::A"* |
| // CHECK-NEXT: call x86_thiscallcc %"struct.constructors::A"* @"\01??0A@constructors@@QAE@XZ"(%"struct.constructors::A"* %{{.*}}) |
| // CHECK-NEXT: br label %[[SKIP_VBASES]] |
| // |
| // CHECK: [[SKIP_VBASES]] |
| // CHECK: call x86_thiscallcc %"struct.constructors::C"* @"\01??0C@constructors@@QAE@XZ"(%"struct.constructors::C"* %{{.*}}, i32 0) |
| // CHECK: ret |
| } |
| |
| struct E : virtual C { |
| E(); |
| }; |
| |
| E::E() { |
| // CHECK: define x86_thiscallcc %"struct.constructors::E"* @"\01??0E@constructors@@QAE@XZ"(%"struct.constructors::E"* returned %this, i32 %is_most_derived) unnamed_addr |
| // CHECK: store i32 %is_most_derived, i32* %[[IS_MOST_DERIVED_VAR:.*]], align 4 |
| // CHECK: %[[IS_MOST_DERIVED_VAL:.*]] = load i32* %[[IS_MOST_DERIVED_VAR]] |
| // CHECK: %[[SHOULD_CALL_VBASE_CTORS:.*]] = icmp ne i32 %[[IS_MOST_DERIVED_VAL]], 0 |
| // CHECK: br i1 %[[SHOULD_CALL_VBASE_CTORS]], label %[[INIT_VBASES:.*]], label %[[SKIP_VBASES:.*]] |
| // |
| // CHECK: [[INIT_VBASES]] |
| // CHECK-NEXT: %[[this_i8:.*]] = bitcast %"struct.constructors::E"* %{{.*}} to i8* |
| // CHECK-NEXT: %[[offs:.*]] = getelementptr inbounds i8* %[[this_i8]], i64 0 |
| // CHECK-NEXT: %[[vbptr_E:.*]] = bitcast i8* %[[offs]] to [3 x i32]** |
| // CHECK-NEXT: store [3 x i32]* @"\01??_8E@constructors@@7B01@@", [3 x i32]** %[[vbptr_E]] |
| // CHECK-NEXT: %[[offs:.*]] = getelementptr inbounds i8* %[[this_i8]], i64 4 |
| // CHECK-NEXT: %[[vbptr_C:.*]] = bitcast i8* %[[offs]] to [2 x i32]** |
| // CHECK-NEXT: store [2 x i32]* @"\01??_8E@constructors@@7BC@1@@", [2 x i32]** %[[vbptr_C]] |
| // CHECK-NEXT: bitcast %"struct.constructors::E"* %{{.*}} to i8* |
| // CHECK-NEXT: getelementptr inbounds i8* %{{.*}}, i64 4 |
| // CHECK-NEXT: bitcast i8* %{{.*}} to %"struct.constructors::A"* |
| // CHECK-NEXT: call x86_thiscallcc %"struct.constructors::A"* @"\01??0A@constructors@@QAE@XZ"(%"struct.constructors::A"* %{{.*}}) |
| // CHECK: call x86_thiscallcc %"struct.constructors::C"* @"\01??0C@constructors@@QAE@XZ"(%"struct.constructors::C"* %{{.*}}, i32 0) |
| // CHECK-NEXT: br label %[[SKIP_VBASES]] |
| // |
| // CHECK: [[SKIP_VBASES]] |
| // CHECK: ret |
| } |
| |
| // PR16735 - even abstract classes should have a constructor emitted. |
| struct F { |
| F(); |
| virtual void f() = 0; |
| }; |
| |
| F::F() {} |
| // CHECK: define x86_thiscallcc %"struct.constructors::F"* @"\01??0F@constructors@@QAE@XZ" |
| |
| } // end namespace constructors |
| |
| namespace dtors { |
| |
| struct A { |
| ~A(); |
| }; |
| |
| void call_nv_complete(A *a) { |
| a->~A(); |
| // CHECK: define void @"\01?call_nv_complete@dtors@@YAXPAUA@1@@Z" |
| // CHECK: call x86_thiscallcc void @"\01??1A@dtors@@QAE@XZ" |
| // CHECK: ret |
| } |
| |
| // CHECK: declare x86_thiscallcc void @"\01??1A@dtors@@QAE@XZ" |
| |
| // Now try some virtual bases, where we need the complete dtor. |
| |
| struct B : virtual A { ~B(); }; |
| struct C : virtual A { ~C(); }; |
| struct D : B, C { ~D(); }; |
| |
| void call_vbase_complete(D *d) { |
| d->~D(); |
| // CHECK: define void @"\01?call_vbase_complete@dtors@@YAXPAUD@1@@Z" |
| // CHECK: call x86_thiscallcc void @"\01??_DD@dtors@@QAE@XZ"(%"struct.dtors::D"* %{{[^,]+}}) |
| // CHECK: ret |
| } |
| |
| // The complete dtor should call the base dtors for D and the vbase A (once). |
| // CHECK: define linkonce_odr x86_thiscallcc void @"\01??_DD@dtors@@QAE@XZ" |
| // CHECK-NOT: call |
| // CHECK: call x86_thiscallcc void @"\01??1D@dtors@@QAE@XZ" |
| // CHECK-NOT: call |
| // CHECK: call x86_thiscallcc void @"\01??1A@dtors@@QAE@XZ" |
| // CHECK-NOT: call |
| // CHECK: ret |
| |
| void destroy_d_complete() { |
| D d; |
| // CHECK: define void @"\01?destroy_d_complete@dtors@@YAXXZ" |
| // CHECK: call x86_thiscallcc void @"\01??_DD@dtors@@QAE@XZ"(%"struct.dtors::D"* %{{[^,]+}}) |
| // CHECK: ret |
| } |
| |
| // FIXME: Clang manually inlines the deletion, so we don't get a call to the |
| // deleting dtor (_G). The only way to call deleting dtors currently is through |
| // a vftable. |
| void call_nv_deleting_dtor(D *d) { |
| delete d; |
| // CHECK: define void @"\01?call_nv_deleting_dtor@dtors@@YAXPAUD@1@@Z" |
| // CHECK: call x86_thiscallcc void @"\01??_DD@dtors@@QAE@XZ"(%"struct.dtors::D"* %{{[^,]+}}) |
| // CHECK: call void @"\01??3@YAXPAX@Z" |
| // CHECK: ret |
| } |
| |
| } |