| // RUN: %clang_cc1 %s -fno-rtti -cxx-abi microsoft -triple=i386-pc-win32 -emit-llvm -o %t |
| // RUN: FileCheck %s < %t |
| // RUN: FileCheck --check-prefix=CHECK2 %s < %t |
| |
| // For now, just make sure x86_64 doesn't crash. |
| // RUN: %clang_cc1 %s -fno-rtti -cxx-abi microsoft -triple=x86_64-pc-win32 -emit-llvm -o %t |
| |
| struct VBase { |
| virtual ~VBase(); |
| virtual void foo(); |
| virtual void bar(); |
| int field; |
| }; |
| |
| struct B : virtual VBase { |
| B(); |
| virtual ~B(); |
| virtual void foo(); |
| virtual void bar(); |
| }; |
| |
| B::B() { |
| // CHECK-LABEL: define x86_thiscallcc %struct.B* @"\01??0B@@QAE@XZ" |
| // CHECK: %[[THIS:.*]] = load %struct.B** |
| // CHECK: br i1 %{{.*}}, label %[[INIT_VBASES:.*]], label %[[SKIP_VBASES:.*]] |
| |
| // Don't check the INIT_VBASES case as it's covered by the ctor tests. |
| |
| // CHECK: %[[SKIP_VBASES]] |
| // CHECK: %[[THIS_i8:.*]] = bitcast %struct.B* %[[THIS]] to i8* |
| // CHECK: %[[VBPTR:.*]] = getelementptr inbounds i8* %[[THIS_i8]], i32 0 |
| // ... |
| // CHECK: %[[THIS_i8:.*]] = bitcast %struct.B* %[[THIS]] to i8* |
| // CHECK: %[[VFPTR_i8:.*]] = getelementptr inbounds i8* %[[THIS_i8]], i32 %{{.*}} |
| // CHECK: %[[VFPTR:.*]] = bitcast i8* %[[VFPTR_i8]] to [3 x i8*]** |
| // CHECK: store [3 x i8*]* @"\01??_7B@@6B@", [3 x i8*]** %[[VFPTR]] |
| |
| // Initialize vtorDisp: |
| // CHECK: %[[THIS_i8:.*]] = bitcast %struct.B* %[[THIS]] to i8* |
| // CHECK: %[[VBPTR:.*]] = getelementptr inbounds i8* %[[THIS_i8]], i32 0 |
| // ... |
| // CHECK: %[[VBASE_OFFSET:.*]] = add nsw i32 0, %{{.*}} |
| // CHECK: %[[VTORDISP_VAL:.*]] = sub i32 %[[VBASE_OFFSET]], 8 |
| // CHECK: %[[THIS_i8:.*]] = bitcast %struct.B* %[[THIS]] to i8* |
| // CHECK: %[[VBASE_i8:.*]] = getelementptr inbounds i8* %[[THIS_i8]], i32 %[[VBASE_OFFSET]] |
| // CHECK: %[[VTORDISP_i8:.*]] = getelementptr i8* %[[VBASE_i8]], i32 -4 |
| // CHECK: %[[VTORDISP_PTR:.*]] = bitcast i8* %[[VTORDISP_i8]] to i32* |
| // CHECK: store i32 %[[VTORDISP_VAL]], i32* %[[VTORDISP_PTR]] |
| |
| // CHECK: ret |
| } |
| |
| B::~B() { |
| // CHECK-LABEL: define x86_thiscallcc void @"\01??1B@@UAE@XZ" |
| // Adjust the this parameter: |
| // CHECK: %[[THIS_PARAM_i8:.*]] = bitcast %struct.B* {{.*}} to i8* |
| // CHECK: %[[THIS_i8:.*]] = getelementptr i8* %[[THIS_PARAM_i8]], i64 -8 |
| // CHECK: %[[THIS:.*]] = bitcast i8* %[[THIS_i8]] to %struct.B* |
| // CHECK: store %struct.B* %[[THIS]], %struct.B** %[[THIS_ADDR:.*]], align 4 |
| // CHECK: %[[THIS:.*]] = load %struct.B** %[[THIS_ADDR]] |
| |
| // Restore the vfptr that could have been changed by a subclass. |
| // CHECK: %[[THIS_i8:.*]] = bitcast %struct.B* %[[THIS]] to i8* |
| // CHECK: %[[VBPTR:.*]] = getelementptr inbounds i8* %[[THIS_i8]], i32 0 |
| // ... |
| // CHECK: %[[THIS_i8:.*]] = bitcast %struct.B* %[[THIS]] to i8* |
| // CHECK: %[[VFPTR_i8:.*]] = getelementptr inbounds i8* %[[THIS_i8]], i32 %{{.*}} |
| // CHECK: %[[VFPTR:.*]] = bitcast i8* %[[VFPTR_i8]] to [3 x i8*]** |
| // CHECK: store [3 x i8*]* @"\01??_7B@@6B@", [3 x i8*]** %[[VFPTR]] |
| |
| // Initialize vtorDisp: |
| // CHECK: %[[THIS_i8:.*]] = bitcast %struct.B* %[[THIS]] to i8* |
| // CHECK: %[[VBPTR:.*]] = getelementptr inbounds i8* %[[THIS_i8]], i32 0 |
| // ... |
| // CHECK: %[[VBASE_OFFSET:.*]] = add nsw i32 0, %{{.*}} |
| // CHECK: %[[VTORDISP_VAL:.*]] = sub i32 %[[VBASE_OFFSET]], 8 |
| // CHECK: %[[THIS_i8:.*]] = bitcast %struct.B* %[[THIS]] to i8* |
| // CHECK: %[[VBASE_i8:.*]] = getelementptr inbounds i8* %[[THIS_i8]], i32 %[[VBASE_OFFSET]] |
| // CHECK: %[[VTORDISP_i8:.*]] = getelementptr i8* %[[VBASE_i8]], i32 -4 |
| // CHECK: %[[VTORDISP_PTR:.*]] = bitcast i8* %[[VTORDISP_i8]] to i32* |
| // CHECK: store i32 %[[VTORDISP_VAL]], i32* %[[VTORDISP_PTR]] |
| |
| foo(); // Avoid the "trivial destructor" optimization. |
| |
| // CHECK: ret |
| |
| // CHECK2-LABEL: define linkonce_odr x86_thiscallcc void @"\01??_DB@@UAE@XZ"(%struct.B* |
| // CHECK2: %[[THIS:.*]] = load %struct.B** {{.*}} |
| // CHECK2: %[[THIS_i8:.*]] = bitcast %struct.B* %[[THIS]] to i8* |
| // CHECK2: %[[B_i8:.*]] = getelementptr inbounds i8* %[[THIS_i8]], i64 8 |
| // CHECK2: %[[B:.*]] = bitcast i8* %[[B_i8]] to %struct.B* |
| // CHECK2: call x86_thiscallcc void @"\01??1B@@UAE@XZ"(%struct.B* %[[B]]) |
| // CHECK2: %[[THIS_i8:.*]] = bitcast %struct.B* %[[THIS]] to i8* |
| // CHECK2: %[[VBASE_i8:.*]] = getelementptr inbounds i8* %[[THIS_i8]], i64 8 |
| // CHECK2: %[[VBASE:.*]] = bitcast i8* %[[VBASE_i8]] to %struct.VBase* |
| // CHECK2: call x86_thiscallcc void @"\01??1VBase@@UAE@XZ"(%struct.VBase* %[[VBASE]]) |
| // CHECK2: ret |
| |
| // CHECK2-LABEL: define linkonce_odr x86_thiscallcc void @"\01??_GB@@UAEPAXI@Z" |
| // CHECK2: %[[THIS_PARAM_i8:.*]] = bitcast %struct.B* {{.*}} to i8* |
| // CHECK2: %[[THIS_i8:.*]] = getelementptr i8* %[[THIS_PARAM_i8:.*]], i64 -8 |
| // CHECK2: %[[THIS:.*]] = bitcast i8* %[[THIS_i8]] to %struct.B* |
| // CHECK2: store %struct.B* %[[THIS]], %struct.B** %[[THIS_ADDR:.*]], align 4 |
| // CHECK2: %[[THIS:.*]] = load %struct.B** %[[THIS_ADDR]] |
| // CHECK2: call x86_thiscallcc void @"\01??_DB@@UAE@XZ"(%struct.B* %[[THIS]]) |
| // ... |
| // CHECK2: ret |
| } |
| |
| void B::foo() { |
| // CHECK-LABEL: define x86_thiscallcc void @"\01?foo@B@@UAEXXZ"(i8* |
| // |
| // B::foo gets 'this' cast to VBase* in ECX (i.e. this+8) so we |
| // need to adjust 'this' before use. |
| // |
| // CHECK: %[[THIS_ADDR:.*]] = alloca %struct.B*, align 4 |
| // CHECK: %[[THIS_i8:.*]] = getelementptr i8* %[[ECX:.*]], i64 -8 |
| // CHECK: %[[THIS:.*]] = bitcast i8* %[[THIS_i8]] to %struct.B* |
| // CHECK: store %struct.B* %[[THIS]], %struct.B** %[[THIS_ADDR]], align 4 |
| |
| field = 42; |
| // CHECK: %[[THIS:.*]] = load %struct.B** %[[THIS_ADDR]] |
| // CHECK: %[[THIS8:.*]] = bitcast %struct.B* %[[THIS]] to i8* |
| // CHECK: %[[VBPTR:.*]] = getelementptr inbounds i8* %[[THIS8]], i32 0 |
| // CHECK: %[[VBPTR8:.*]] = bitcast i8* %[[VBPTR]] to i8** |
| // CHECK: %[[VBTABLE:.*]] = load i8** %[[VBPTR8]] |
| // CHECK: %[[VBENTRY8:.*]] = getelementptr inbounds i8* %[[VBTABLE]], i32 4 |
| // CHECK: %[[VBENTRY:.*]] = bitcast i8* %[[VBENTRY8]] to i32* |
| // CHECK: %[[VBOFFSET32:.*]] = load i32* %[[VBENTRY]] |
| // CHECK: %[[VBOFFSET:.*]] = add nsw i32 0, %[[VBOFFSET32]] |
| // CHECK: %[[THIS8:.*]] = bitcast %struct.B* %[[THIS]] to i8* |
| // CHECK: %[[VBASE_i8:.*]] = getelementptr inbounds i8* %[[THIS8]], i32 %[[VBOFFSET]] |
| // CHECK: %[[VBASE:.*]] = bitcast i8* %[[VBASE_i8]] to %struct.VBase* |
| // CHECK: %[[FIELD:.*]] = getelementptr inbounds %struct.VBase* %[[VBASE]], i32 0, i32 1 |
| // CHECK: store i32 42, i32* %[[FIELD]], align 4 |
| // |
| // CHECK: ret void |
| } |
| |
| void call_vbase_bar(B *obj) { |
| // CHECK-LABEL: define void @"\01?call_vbase_bar@@YAXPAUB@@@Z"(%struct.B* %obj) |
| // CHECK: %[[OBJ:.*]] = load %struct.B |
| |
| obj->bar(); |
| // When calling a vbase's virtual method, one needs to adjust 'this' |
| // at the caller site. |
| // |
| // CHECK: %[[OBJ_i8:.*]] = bitcast %struct.B* %[[OBJ]] to i8* |
| // CHECK: %[[VBPTR:.*]] = getelementptr inbounds i8* %[[OBJ_i8]], i32 0 |
| // CHECK: %[[VBPTR8:.*]] = bitcast i8* %[[VBPTR]] to i8** |
| // CHECK: %[[VBTABLE:.*]] = load i8** %[[VBPTR8]] |
| // CHECK: %[[VBENTRY8:.*]] = getelementptr inbounds i8* %[[VBTABLE]], i32 4 |
| // CHECK: %[[VBENTRY:.*]] = bitcast i8* %[[VBENTRY8]] to i32* |
| // CHECK: %[[VBOFFSET32:.*]] = load i32* %[[VBENTRY]] |
| // CHECK: %[[VBOFFSET:.*]] = add nsw i32 0, %[[VBOFFSET32]] |
| // CHECK: %[[VBASE_i8:.*]] = getelementptr inbounds i8* %[[OBJ_i8]], i32 %[[VBOFFSET]] |
| // CHECK: %[[VFPTR:.*]] = bitcast i8* %[[VBASE_i8]] to void (i8*)*** |
| // CHECK: %[[VFTABLE:.*]] = load void (i8*)*** %[[VFPTR]] |
| // CHECK: %[[VFUN:.*]] = getelementptr inbounds void (i8*)** %[[VFTABLE]], i64 2 |
| // CHECK: %[[VFUN_VALUE:.*]] = load void (i8*)** %[[VFUN]] |
| // |
| // CHECK: %[[OBJ_i8:.*]] = bitcast %struct.B* %[[OBJ]] to i8* |
| // CHECK: %[[VBPTR:.*]] = getelementptr inbounds i8* %[[OBJ_i8]], i32 0 |
| // CHECK: %[[VBPTR8:.*]] = bitcast i8* %[[VBPTR]] to i8** |
| // CHECK: %[[VBTABLE:.*]] = load i8** %[[VBPTR8]] |
| // CHECK: %[[VBENTRY8:.*]] = getelementptr inbounds i8* %[[VBTABLE]], i32 4 |
| // CHECK: %[[VBENTRY:.*]] = bitcast i8* %[[VBENTRY8]] to i32* |
| // CHECK: %[[VBOFFSET32:.*]] = load i32* %[[VBENTRY]] |
| // CHECK: %[[VBOFFSET:.*]] = add nsw i32 0, %[[VBOFFSET32]] |
| // CHECK: %[[VBASE:.*]] = getelementptr inbounds i8* %[[OBJ_i8]], i32 %[[VBOFFSET]] |
| // |
| // CHECK: call x86_thiscallcc void %[[VFUN_VALUE]](i8* %[[VBASE]]) |
| // |
| // CHECK: ret void |
| } |
| |
| void delete_B(B *obj) { |
| // CHECK-LABEL: define void @"\01?delete_B@@YAXPAUB@@@Z"(%struct.B* %obj) |
| // CHECK: %[[OBJ:.*]] = load %struct.B |
| |
| delete obj; |
| // CHECK: %[[OBJ_i8:.*]] = bitcast %struct.B* %[[OBJ]] to i8* |
| // CHECK: %[[VBPTR:.*]] = getelementptr inbounds i8* %[[OBJ_i8]], i32 0 |
| // CHECK: %[[VBPTR8:.*]] = bitcast i8* %[[VBPTR]] to i8** |
| // CHECK: %[[VBTABLE:.*]] = load i8** %[[VBPTR8]] |
| // CHECK: %[[VBENTRY8:.*]] = getelementptr inbounds i8* %[[VBTABLE]], i32 4 |
| // CHECK: %[[VBENTRY:.*]] = bitcast i8* %[[VBENTRY8]] to i32* |
| // CHECK: %[[VBOFFSET32:.*]] = load i32* %[[VBENTRY]] |
| // CHECK: %[[VBOFFSET:.*]] = add nsw i32 0, %[[VBOFFSET32]] |
| // CHECK: %[[VBASE_i8:.*]] = getelementptr inbounds i8* %[[OBJ_i8]], i32 %[[VBOFFSET]] |
| // CHECK: %[[VFPTR:.*]] = bitcast i8* %[[VBASE_i8]] to void (%struct.B*, i32)*** |
| // CHECK: %[[VFTABLE:.*]] = load void (%struct.B*, i32)*** %[[VFPTR]] |
| // CHECK: %[[VFUN:.*]] = getelementptr inbounds void (%struct.B*, i32)** %[[VFTABLE]], i64 0 |
| // CHECK: %[[VFUN_VALUE:.*]] = load void (%struct.B*, i32)** %[[VFUN]] |
| // |
| // CHECK: %[[OBJ_i8:.*]] = bitcast %struct.B* %[[OBJ]] to i8* |
| // CHECK: %[[VBPTR:.*]] = getelementptr inbounds i8* %[[OBJ_i8]], i32 0 |
| // CHECK: %[[VBPTR8:.*]] = bitcast i8* %[[VBPTR]] to i8** |
| // CHECK: %[[VBTABLE:.*]] = load i8** %[[VBPTR8]] |
| // CHECK: %[[VBENTRY8:.*]] = getelementptr inbounds i8* %[[VBTABLE]], i32 4 |
| // CHECK: %[[VBENTRY:.*]] = bitcast i8* %[[VBENTRY8]] to i32* |
| // CHECK: %[[VBOFFSET32:.*]] = load i32* %[[VBENTRY]] |
| // CHECK: %[[VBOFFSET:.*]] = add nsw i32 0, %[[VBOFFSET32]] |
| // CHECK: %[[VBASE_i8:.*]] = getelementptr inbounds i8* %[[OBJ_i8]], i32 %[[VBOFFSET]] |
| // CHECK: %[[VBASE:.*]] = bitcast i8* %[[VBASE_i8]] to %struct.B* |
| // |
| // CHECK: call x86_thiscallcc void %[[VFUN_VALUE]](%struct.B* %[[VBASE]], i32 1) |
| // CHECK: ret void |
| } |
| |
| void call_complete_dtor() { |
| // CHECK-LABEL: define void @"\01?call_complete_dtor@@YAXXZ" |
| B b; |
| // CHECK: call x86_thiscallcc %struct.B* @"\01??0B@@QAE@XZ"(%struct.B* %[[B:.*]], i32 1) |
| // CHECK-NOT: getelementptr |
| // CHECK: call x86_thiscallcc void @"\01??_DB@@UAE@XZ"(%struct.B* %[[B]]) |
| // CHECK: ret |
| } |
| |
| struct C : B { |
| C(); |
| // has an implicit vdtor. |
| }; |
| |
| // Used to crash on an assertion. |
| C::C() { |
| // CHECK-LABEL: define x86_thiscallcc %struct.C* @"\01??0C@@QAE@XZ" |
| } |
| |
| namespace multiple_vbases { |
| struct A { |
| virtual void a(); |
| }; |
| |
| struct B { |
| virtual void b(); |
| }; |
| |
| struct C { |
| virtual void c(); |
| }; |
| |
| struct D : virtual A, virtual B, virtual C { |
| virtual void a(); |
| virtual void b(); |
| virtual void c(); |
| D(); |
| }; |
| |
| D::D() { |
| // CHECK-LABEL: define x86_thiscallcc %"struct.multiple_vbases::D"* @"\01??0D@multiple_vbases@@QAE@XZ" |
| // Just make sure we emit 3 vtordisps after initializing vfptrs. |
| // CHECK: store [1 x i8*]* @"\01??_7D@multiple_vbases@@6BA@1@@", [1 x i8*]** %{{.*}} |
| // CHECK: store [1 x i8*]* @"\01??_7D@multiple_vbases@@6BB@1@@", [1 x i8*]** %{{.*}} |
| // CHECK: store [1 x i8*]* @"\01??_7D@multiple_vbases@@6BC@1@@", [1 x i8*]** %{{.*}} |
| // ... |
| // CHECK: store i32 %{{.*}}, i32* %{{.*}} |
| // CHECK: store i32 %{{.*}}, i32* %{{.*}} |
| // CHECK: store i32 %{{.*}}, i32* %{{.*}} |
| // CHECK: ret |
| } |
| } |
| |
| namespace diamond { |
| struct A { |
| A(); |
| virtual ~A(); |
| }; |
| |
| struct B : virtual A { |
| B(); |
| ~B(); |
| }; |
| |
| struct C : virtual A { |
| C(); |
| ~C(); |
| int c1, c2, c3; |
| }; |
| |
| struct Z { |
| int z; |
| }; |
| |
| struct D : virtual Z, B, C { |
| D(); |
| ~D(); |
| } d; |
| |
| D::~D() { |
| // CHECK-LABEL: define x86_thiscallcc void @"\01??1D@diamond@@UAE@XZ"(%"struct.diamond::D"*) |
| // CHECK: %[[ARG_i8:.*]] = bitcast %"struct.diamond::D"* %{{.*}} to i8* |
| // CHECK: %[[THIS_i8:.*]] = getelementptr i8* %[[ARG_i8]], i64 -24 |
| // CHECK: %[[THIS:.*]] = bitcast i8* %[[THIS_i8]] to %"struct.diamond::D"* |
| // CHECK: store %"struct.diamond::D"* %[[THIS]], %"struct.diamond::D"** %[[THIS_VAL:.*]], align 4 |
| // CHECK: %[[THIS:.*]] = load %"struct.diamond::D"** %[[THIS_VAL]] |
| // CHECK: %[[D_i8:.*]] = bitcast %"struct.diamond::D"* %[[THIS]] to i8* |
| // CHECK: %[[C_i8:.*]] = getelementptr inbounds i8* %[[D_i8]], i64 4 |
| // CHECK: %[[C:.*]] = bitcast i8* %[[C_i8]] to %"struct.diamond::C"* |
| // CHECK: %[[C_i8:.*]] = bitcast %"struct.diamond::C"* %[[C]] to i8* |
| // CHECK: %[[ARG_i8:.*]] = getelementptr inbounds i8* %{{.*}}, i64 16 |
| // FIXME: We might consider changing the dtor this parameter type to i8*. |
| // CHECK: %[[ARG:.*]] = bitcast i8* %[[ARG_i8]] to %"struct.diamond::C"* |
| // CHECK: call x86_thiscallcc void @"\01??1C@diamond@@UAE@XZ"(%"struct.diamond::C"* %[[ARG]]) |
| |
| // CHECK: %[[B:.*]] = bitcast %"struct.diamond::D"* %[[THIS]] to %"struct.diamond::B"* |
| // CHECK: %[[B_i8:.*]] = bitcast %"struct.diamond::B"* %[[B]] to i8* |
| // CHECK: %[[ARG_i8:.*]] = getelementptr inbounds i8* %[[B_i8]], i64 4 |
| // CHECK: %[[ARG:.*]] = bitcast i8* %[[ARG_i8]] to %"struct.diamond::B"* |
| // CHECK: call x86_thiscallcc void @"\01??1B@diamond@@UAE@XZ"(%"struct.diamond::B"* %[[ARG]]) |
| // CHECK: ret void |
| } |
| |
| } |