| // RUN: %clang_cc1 %s -fno-rtti -triple=i386-pc-win32 -emit-llvm -fdump-vtable-layouts -o %t.ll > %t |
| // RUN: FileCheck --check-prefix=EMITS-VFTABLE %s < %t.ll |
| // RUN: FileCheck --check-prefix=NO-VFTABLE %s < %t.ll |
| // RUN: FileCheck %s < %t |
| |
| struct A { |
| // CHECK-LABEL: VFTable for 'A' (3 entries) |
| // CHECK-NEXT: 0 | void A::f() |
| // CHECK-NEXT: 1 | void A::g() |
| // CHECK-NEXT: 2 | void A::h() |
| // CHECK-LABEL: VFTable indices for 'A' (3 entries) |
| // CHECK-NEXT: 0 | void A::f() |
| // CHECK-NEXT: 1 | void A::g() |
| // CHECK-NEXT: 2 | void A::h() |
| |
| virtual void f(); |
| virtual void g(); |
| virtual void h(); |
| int ia; |
| }; |
| A a; |
| // EMITS-VFTABLE-DAG: @"\01??_7A@@6B@" = linkonce_odr unnamed_addr constant [3 x i8*] |
| void use(A *obj) { obj->f(); } |
| |
| struct B : A { |
| // CHECK-LABEL: VFTable for 'A' in 'B' (5 entries) |
| // CHECK-NEXT: 0 | void B::f() |
| // CHECK-NEXT: 1 | void A::g() |
| // CHECK-NEXT: 2 | void A::h() |
| // CHECK-NEXT: 3 | void B::i() |
| // CHECK-NEXT: 4 | void B::j() |
| // CHECK-LABEL: VFTable indices for 'B' (3 entries) |
| // CHECK-NEXT: 0 | void B::f() |
| // CHECK-NEXT: 3 | void B::i() |
| // CHECK-NEXT: 4 | void B::j() |
| |
| virtual void f(); // overrides A::f() |
| virtual void i(); |
| virtual void j(); |
| }; |
| B b; |
| // EMITS-VFTABLE-DAG: @"\01??_7B@@6B@" = linkonce_odr unnamed_addr constant [5 x i8*] |
| void use(B *obj) { obj->f(); } |
| |
| struct C { |
| // CHECK-LABEL: VFTable for 'C' (2 entries) |
| // CHECK-NEXT: 0 | C::~C() [scalar deleting] |
| // CHECK-NEXT: 1 | void C::f() |
| // CHECK-LABEL: VFTable indices for 'C' (2 entries). |
| // CHECK-NEXT: 0 | C::~C() [scalar deleting] |
| // CHECK-NEXT: 1 | void C::f() |
| |
| virtual ~C(); |
| virtual void f(); |
| }; |
| void C::f() {} |
| // NO-VFTABLE-NOT: @"\01??_7C@@6B@" |
| void use(C *obj) { obj->f(); } |
| |
| struct D { |
| // CHECK-LABEL: VFTable for 'D' (2 entries) |
| // CHECK-NEXT: 0 | void D::f() |
| // CHECK-NEXT: 1 | D::~D() [scalar deleting] |
| // CHECK-LABEL: VFTable indices for 'D' (2 entries) |
| // CHECK-NEXT: 0 | void D::f() |
| // CHECK-NEXT: 1 | D::~D() [scalar deleting] |
| |
| virtual void f(); |
| virtual ~D(); |
| }; |
| D d; |
| // EMITS-VFTABLE-DAG: @"\01??_7D@@6B@" = linkonce_odr unnamed_addr constant [2 x i8*] |
| void use(D *obj) { obj->f(); } |
| |
| struct E : A { |
| // CHECK-LABEL: VFTable for 'A' in 'E' (5 entries) |
| // CHECK-NEXT: 0 | void A::f() |
| // CHECK-NEXT: 1 | void A::g() |
| // CHECK-NEXT: 2 | void A::h() |
| // CHECK-NEXT: 3 | E::~E() [scalar deleting] |
| // CHECK-NEXT: 4 | void E::i() |
| // CHECK-LABEL: VFTable indices for 'E' (2 entries). |
| // CHECK-NEXT: 3 | E::~E() [scalar deleting] |
| // CHECK-NEXT: 4 | void E::i() |
| |
| // ~E would be the key method, but it isn't used, and MS ABI has no key |
| // methods. |
| virtual ~E(); |
| virtual void i(); |
| }; |
| void E::i() {} |
| // NO-VFTABLE-NOT: @"\01??_7E@@6B@" |
| void use(E *obj) { obj->i(); } |
| |
| struct F : A { |
| // CHECK-LABEL: VFTable for 'A' in 'F' (5 entries) |
| // CHECK-NEXT: 0 | void A::f() |
| // CHECK-NEXT: 1 | void A::g() |
| // CHECK-NEXT: 2 | void A::h() |
| // CHECK-NEXT: 3 | void F::i() |
| // CHECK-NEXT: 4 | F::~F() [scalar deleting] |
| // CHECK-LABEL: VFTable indices for 'F' (2 entries). |
| // CHECK-NEXT: 3 | void F::i() |
| // CHECK-NEXT: 4 | F::~F() [scalar deleting] |
| |
| virtual void i(); |
| virtual ~F(); |
| }; |
| F f; |
| // EMITS-VFTABLE-DAG: @"\01??_7F@@6B@" = linkonce_odr unnamed_addr constant [5 x i8*] |
| void use(F *obj) { obj->i(); } |
| |
| struct G : E { |
| // CHECK-LABEL: VFTable for 'A' in 'E' in 'G' (6 entries) |
| // CHECK-NEXT: 0 | void G::f() |
| // CHECK-NEXT: 1 | void A::g() |
| // CHECK-NEXT: 2 | void A::h() |
| // CHECK-NEXT: 3 | G::~G() [scalar deleting] |
| // CHECK-NEXT: 4 | void E::i() |
| // CHECK-NEXT: 5 | void G::j() |
| // CHECK-LABEL: VFTable indices for 'G' (3 entries). |
| // CHECK-NEXT: 0 | void G::f() |
| // CHECK-NEXT: 3 | G::~G() [scalar deleting] |
| // CHECK-NEXT: 5 | void G::j() |
| |
| virtual void f(); // overrides A::f() |
| virtual ~G(); |
| virtual void j(); |
| }; |
| void G::j() {} |
| // NO-VFTABLE-NOT: @"\01??_7G@@6B@" |
| void use(G *obj) { obj->j(); } |
| |
| // Test that the usual Itanium-style key method does not emit a vtable. |
| struct H { |
| virtual void f(); |
| }; |
| void H::f() {} |
| // NO-VFTABLE-NOT: @"\01??_7H@@6B@" |
| |
| struct Empty { }; |
| |
| struct I : Empty { |
| // CHECK-LABEL: VFTable for 'I' (2 entries) |
| // CHECK-NEXT: 0 | void I::f() |
| // CHECK-NEXT: 1 | void I::g() |
| virtual void f(); |
| virtual void g(); |
| }; |
| |
| I i; |
| void use(I *obj) { obj->f(); } |
| |
| struct J { |
| // CHECK-LABEL: VFTable for 'J' (6 entries) |
| // CHECK-NEXT: 0 | void J::foo(long) |
| // CHECK-NEXT: 1 | void J::foo(int) |
| // CHECK-NEXT: 2 | void J::foo(short) |
| // CHECK-NEXT: 3 | void J::bar(long) |
| // CHECK-NEXT: 4 | void J::bar(int) |
| // CHECK-NEXT: 5 | void J::bar(short) |
| virtual void foo(short); |
| virtual void bar(short); |
| virtual void foo(int); |
| virtual void bar(int); |
| virtual void foo(long); |
| virtual void bar(long); |
| }; |
| |
| J j; |
| void use(J *obj) { obj->foo(42); } |
| |
| struct K : J { |
| // CHECK-LABEL: VFTable for 'J' in 'K' (9 entries) |
| // CHECK-NEXT: 0 | void J::foo(long) |
| // CHECK-NEXT: 1 | void J::foo(int) |
| // CHECK-NEXT: 2 | void J::foo(short) |
| // CHECK-NEXT: 3 | void J::bar(long) |
| // CHECK-NEXT: 4 | void J::bar(int) |
| // CHECK-NEXT: 5 | void J::bar(short) |
| // CHECK-NEXT: 6 | void K::bar(double) |
| // CHECK-NEXT: 7 | void K::bar(float) |
| // CHECK-NEXT: 8 | void K::foo(float) |
| virtual void bar(float); |
| virtual void foo(float); |
| virtual void bar(double); |
| }; |
| |
| K k; |
| void use(K *obj) { obj->foo(42.0f); } |
| |
| struct L : J { |
| // CHECK-LABEL: VFTable for 'J' in 'L' (9 entries) |
| // CHECK-NEXT: 0 | void J::foo(long) |
| // CHECK-NEXT: 1 | void L::foo(int) |
| // CHECK-NEXT: 2 | void J::foo(short) |
| // CHECK-NEXT: 3 | void J::bar(long) |
| // CHECK-NEXT: 4 | void J::bar(int) |
| // CHECK-NEXT: 5 | void J::bar(short) |
| // CHECK-NEXT: 6 | void L::foo(float) |
| // CHECK-NEXT: 7 | void L::bar(double) |
| // CHECK-NEXT: 8 | void L::bar(float) |
| |
| // This case is interesting. Since the J::foo(int) override is the first method in |
| // the class, foo(float) precedes the bar(double) and bar(float) in the vftable. |
| virtual void foo(int); |
| virtual void bar(float); |
| virtual void foo(float); |
| virtual void bar(double); |
| }; |
| |
| L l; |
| void use(L *obj) { obj->foo(42.0f); } |
| |
| struct M : J { |
| // CHECK-LABEL: VFTable for 'J' in 'M' (11 entries) |
| // CHECK-NEXT: 0 | void J::foo(long) |
| // CHECK-NEXT: 1 | void M::foo(int) |
| // CHECK-NEXT: 2 | void J::foo(short) |
| // CHECK-NEXT: 3 | void J::bar(long) |
| // CHECK-NEXT: 4 | void J::bar(int) |
| // CHECK-NEXT: 5 | void J::bar(short) |
| // CHECK-NEXT: 6 | void M::foo(float) |
| // CHECK-NEXT: 7 | void M::spam(long) |
| // CHECK-NEXT: 8 | void M::spam(int) |
| // CHECK-NEXT: 9 | void M::bar(double) |
| // CHECK-NEXT: 10 | void M::bar(float) |
| |
| virtual void foo(int); |
| virtual void spam(int); |
| virtual void bar(float); |
| virtual void bar(double); |
| virtual void foo(float); |
| virtual void spam(long); |
| }; |
| |
| M m; |
| void use(M *obj) { obj->foo(42.0f); } |
| |
| struct N { |
| // CHECK-LABEL: VFTable for 'N' (4 entries) |
| // CHECK-NEXT: 0 | void N::operator+(int) |
| // CHECK-NEXT: 1 | void N::operator+(short) |
| // CHECK-NEXT: 2 | void N::operator*(int) |
| // CHECK-NEXT: 3 | void N::operator*(short) |
| virtual void operator+(short); |
| virtual void operator*(short); |
| virtual void operator+(int); |
| virtual void operator*(int); |
| }; |
| |
| N n; |
| void use(N *obj) { obj->operator+(42); } |
| |
| struct O { virtual A *f(); }; |
| struct P : O { virtual B *f(); }; |
| P p; |
| void use(O *obj) { obj->f(); } |
| void use(P *obj) { obj->f(); } |
| // CHECK-LABEL: VFTable for 'O' (1 entry) |
| // CHECK-NEXT: 0 | A *O::f() |
| |
| // CHECK-LABEL: VFTable for 'O' in 'P' (1 entry) |
| // CHECK-NEXT: 0 | B *P::f() |
| |
| struct Q { |
| // CHECK-LABEL: VFTable for 'Q' (2 entries) |
| // CHECK-NEXT: 0 | void Q::foo(int) |
| // CHECK-NEXT: 1 | void Q::bar(int) |
| void foo(short); |
| void bar(short); |
| virtual void bar(int); |
| virtual void foo(int); |
| }; |
| |
| Q q; |
| void use(Q *obj) { obj->foo(42); } |
| |
| // Inherited non-virtual overloads don't participate in the ordering. |
| struct R : Q { |
| // CHECK-LABEL: VFTable for 'Q' in 'R' (4 entries) |
| // CHECK-NEXT: 0 | void Q::foo(int) |
| // CHECK-NEXT: 1 | void Q::bar(int) |
| // CHECK-NEXT: 2 | void R::bar(long) |
| // CHECK-NEXT: 3 | void R::foo(long) |
| virtual void bar(long); |
| virtual void foo(long); |
| }; |
| |
| R r; |
| void use(R *obj) { obj->foo(42l); } |
| |
| struct S { |
| // CHECK-LABEL: VFTable for 'S' (1 entry). |
| // CHECK-NEXT: 0 | void S::f() [deleted] |
| virtual void f() = delete; |
| S(); |
| // EMITS-VFTABLE-DAG: @"\01??_7S@@6B@" = linkonce_odr unnamed_addr constant [1 x i8*] [i8* bitcast (void ()* @_purecall to i8*)] |
| }; |
| |
| S::S() {} |