forked from OSchip/llvm-project
190 lines
6.8 KiB
C++
190 lines
6.8 KiB
C++
// RUN: %clang_cc1 %s -triple=x86_64-apple-darwin10 -emit-llvm-only -fdump-vtable-layouts 2>&1 | FileCheck %s
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/// Examples from the Itanium C++ ABI specification.
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/// http://www.codesourcery.com/public/cxx-abi/
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namespace Test1 {
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// This is from http://www.codesourcery.com/public/cxx-abi/cxx-vtable-ex.html
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// CHECK: Vtable for 'Test1::A' (5 entries).
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// CHECK-NEXT: 0 | offset_to_top (0)
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// CHECK-NEXT: 1 | Test1::A RTTI
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// CHECK-NEXT: -- (Test1::A, 0) vtable address --
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// CHECK-NEXT: 2 | void Test1::A::f()
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// CHECK-NEXT: 3 | void Test1::A::g()
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// CHECK-NEXT: 4 | void Test1::A::h()
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struct A {
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virtual void f ();
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virtual void g ();
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virtual void h ();
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int ia;
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};
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void A::f() {}
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// CHECK: Vtable for 'Test1::B' (13 entries).
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// CHECK-NEXT: 0 | vbase_offset (16)
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// CHECK-NEXT: 1 | offset_to_top (0)
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// CHECK-NEXT: 2 | Test1::B RTTI
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// CHECK-NEXT: -- (Test1::B, 0) vtable address --
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// CHECK-NEXT: 3 | void Test1::B::f()
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// CHECK-NEXT: 4 | void Test1::B::h()
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// CHECK-NEXT: 5 | vcall_offset (-16)
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// CHECK-NEXT: 6 | vcall_offset (0)
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// CHECK-NEXT: 7 | vcall_offset (-16)
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// CHECK-NEXT: 8 | offset_to_top (-16)
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// CHECK-NEXT: 9 | Test1::B RTTI
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// CHECK-NEXT: -- (Test1::A, 16) vtable address --
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// CHECK-NEXT: 10 | void Test1::B::f()
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// CHECK-NEXT: [this adjustment: 0 non-virtual, -24 vcall offset offset]
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// CHECK-NEXT: 11 | void Test1::A::g()
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// CHECK-NEXT: 12 | void Test1::B::h()
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// CHECK-NEXT: [this adjustment: 0 non-virtual, -40 vcall offset offset]
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struct B: public virtual A {
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void f ();
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void h ();
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int ib;
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};
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void B::f() {}
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// CHECK: Vtable for 'Test1::C' (13 entries).
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// CHECK-NEXT: 0 | vbase_offset (16)
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// CHECK-NEXT: 1 | offset_to_top (0)
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// CHECK-NEXT: 2 | Test1::C RTTI
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// CHECK-NEXT: -- (Test1::C, 0) vtable address --
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// CHECK-NEXT: 3 | void Test1::C::g()
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// CHECK-NEXT: 4 | void Test1::C::h()
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// CHECK-NEXT: 5 | vcall_offset (-16)
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// CHECK-NEXT: 6 | vcall_offset (-16)
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// CHECK-NEXT: 7 | vcall_offset (0)
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// CHECK-NEXT: 8 | offset_to_top (-16)
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// CHECK-NEXT: 9 | Test1::C RTTI
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// CHECK-NEXT: -- (Test1::A, 16) vtable address --
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// CHECK-NEXT: 10 | void Test1::A::f()
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// CHECK-NEXT: 11 | void Test1::C::g()
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// CHECK-NEXT: [this adjustment: 0 non-virtual, -32 vcall offset offset]
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// CHECK-NEXT: 12 | void Test1::C::h()
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// CHECK-NEXT: [this adjustment: 0 non-virtual, -40 vcall offset offset]
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struct C: public virtual A {
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void g ();
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void h ();
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int ic;
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};
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void C::g() {}
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// CHECK: Vtable for 'Test1::D' (18 entries).
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// CHECK-NEXT: 0 | vbase_offset (32)
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// CHECK-NEXT: 1 | offset_to_top (0)
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// CHECK-NEXT: 2 | Test1::D RTTI
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// CHECK-NEXT: -- (Test1::B, 0) vtable address --
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// CHECK-NEXT: -- (Test1::D, 0) vtable address --
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// CHECK-NEXT: 3 | void Test1::B::f()
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// CHECK-NEXT: 4 | void Test1::D::h()
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// CHECK-NEXT: 5 | vbase_offset (16)
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// CHECK-NEXT: 6 | offset_to_top (-16)
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// CHECK-NEXT: 7 | Test1::D RTTI
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// CHECK-NEXT: -- (Test1::C, 16) vtable address --
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// CHECK-NEXT: 8 | void Test1::C::g()
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// CHECK-NEXT: 9 | void Test1::D::h()
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// CHECK-NEXT: [this adjustment: -16 non-virtual]
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// CHECK-NEXT: 10 | vcall_offset (-32)
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// CHECK-NEXT: 11 | vcall_offset (-16)
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// CHECK-NEXT: 12 | vcall_offset (-32)
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// CHECK-NEXT: 13 | offset_to_top (-32)
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// CHECK-NEXT: 14 | Test1::D RTTI
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// CHECK-NEXT: -- (Test1::A, 32) vtable address --
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// CHECK-NEXT: 15 | void Test1::B::f()
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// CHECK-NEXT: [this adjustment: 0 non-virtual, -24 vcall offset offset]
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// CHECK-NEXT: 16 | void Test1::C::g()
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// CHECK-NEXT: [this adjustment: 0 non-virtual, -32 vcall offset offset]
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// CHECK-NEXT: 17 | void Test1::D::h()
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// CHECK-NEXT: [this adjustment: 0 non-virtual, -40 vcall offset offset]
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struct D: public B, public C {
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void h ();
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int id;
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};
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void D::h() { }
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struct X {
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int ix;
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virtual void x();
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};
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// CHECK: Vtable for 'Test1::E' (24 entries).
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// CHECK-NEXT: 0 | vbase_offset (56)
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// CHECK-NEXT: 1 | offset_to_top (0)
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// CHECK-NEXT: 2 | Test1::E RTTI
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// CHECK-NEXT: -- (Test1::E, 0) vtable address --
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// CHECK-NEXT: -- (Test1::X, 0) vtable address --
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// CHECK-NEXT: 3 | void Test1::X::x()
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// CHECK-NEXT: 4 | void Test1::E::f()
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// CHECK-NEXT: 5 | void Test1::E::h()
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// CHECK-NEXT: 6 | vbase_offset (40)
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// CHECK-NEXT: 7 | offset_to_top (-16)
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// CHECK-NEXT: 8 | Test1::E RTTI
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// CHECK-NEXT: -- (Test1::B, 16) vtable address --
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// CHECK-NEXT: -- (Test1::D, 16) vtable address --
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// CHECK-NEXT: 9 | void Test1::E::f()
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// CHECK-NEXT: [this adjustment: -16 non-virtual]
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// CHECK-NEXT: 10 | void Test1::E::h()
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// CHECK-NEXT: [this adjustment: -16 non-virtual]
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// CHECK-NEXT: 11 | vbase_offset (24)
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// CHECK-NEXT: 12 | offset_to_top (-32)
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// CHECK-NEXT: 13 | Test1::E RTTI
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// CHECK-NEXT: -- (Test1::C, 32) vtable address --
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// CHECK-NEXT: 14 | void Test1::C::g()
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// CHECK-NEXT: 15 | void Test1::E::h()
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// CHECK-NEXT: [this adjustment: -32 non-virtual]
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// CHECK-NEXT: 16 | vcall_offset (-56)
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// CHECK-NEXT: 17 | vcall_offset (-24)
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// CHECK-NEXT: 18 | vcall_offset (-56)
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// CHECK-NEXT: 19 | offset_to_top (-56)
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// CHECK-NEXT: 20 | Test1::E RTTI
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// CHECK-NEXT: -- (Test1::A, 56) vtable address --
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// CHECK-NEXT: 21 | void Test1::E::f()
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// CHECK-NEXT: [this adjustment: 0 non-virtual, -24 vcall offset offset]
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// CHECK-NEXT: 22 | void Test1::C::g()
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// CHECK-NEXT: [this adjustment: 0 non-virtual, -32 vcall offset offset]
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// CHECK-NEXT: 23 | void Test1::E::h()
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// CHECK-NEXT: [this adjustment: 0 non-virtual, -40 vcall offset offset]
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struct E : X, D {
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int ie;
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void f();
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void h ();
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};
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void E::f() { }
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}
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namespace Test2 {
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// From http://www.codesourcery.com/public/cxx-abi/abi.html#class-types.
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struct A { virtual void f(); };
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struct B : virtual public A { int i; };
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struct C : virtual public A { int j; };
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// CHECK: Vtable for 'Test2::D' (11 entries).
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// CHECK-NEXT: 0 | vbase_offset (0)
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// CHECK-NEXT: 1 | vcall_offset (0)
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// CHECK-NEXT: 2 | offset_to_top (0)
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// CHECK-NEXT: 3 | Test2::D RTTI
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// CHECK-NEXT: -- (Test2::A, 0) vtable address --
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// CHECK-NEXT: -- (Test2::B, 0) vtable address --
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// CHECK-NEXT: -- (Test2::D, 0) vtable address --
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// CHECK-NEXT: 4 | void Test2::A::f()
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// CHECK-NEXT: 5 | void Test2::D::d()
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// CHECK-NEXT: 6 | vbase_offset (-16)
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// CHECK-NEXT: 7 | vcall_offset (-16)
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// CHECK-NEXT: 8 | offset_to_top (-16)
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// CHECK-NEXT: 9 | Test2::D RTTI
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// CHECK-NEXT: -- (Test2::A, 16) vtable address --
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// CHECK-NEXT: -- (Test2::C, 16) vtable address --
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// CHECK-NEXT: 10 | [unused] void Test2::A::f()
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struct D : public B, public C {
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virtual void d();
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};
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void D::d() { }
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}
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