forked from OSchip/llvm-project
398 lines
10 KiB
C++
398 lines
10 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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// For now, just verify this doesn't crash.
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namespace test0 {
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struct Obj {};
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struct Base { virtual const Obj *foo() = 0; };
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struct Derived : Base { virtual Obj *foo() { return new Obj(); } };
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void test(Derived *D) { D->foo(); }
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}
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namespace Test1 {
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// CHECK: Vtable for 'Test1::A' (3 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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struct A {
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virtual void f();
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};
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void A::f() { }
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}
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namespace Test2 {
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// This is a smoke test of the vtable dumper.
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// CHECK: Vtable for 'Test2::A' (9 entries).
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// CHECK-NEXT: 0 | offset_to_top (0)
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// CHECK-NEXT: 1 | Test2::A RTTI
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// CHECK-NEXT: -- (Test2::A, 0) vtable address --
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// CHECK-NEXT: 2 | void Test2::A::f()
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// CHECK-NEXT: 3 | void Test2::A::f() const
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// CHECK-NEXT: 4 | Test2::A *Test2::A::g(int)
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// CHECK-NEXT: 5 | Test2::A::~A() [complete]
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// CHECK-NEXT: 6 | Test2::A::~A() [deleting]
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// CHECK-NEXT: 7 | void Test2::A::h()
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// CHECK-NEXT: 8 | Test2::A &Test2::A::operator=(Test2::A const &)
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struct A {
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virtual void f();
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virtual void f() const;
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virtual A* g(int a);
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virtual ~A();
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virtual void h();
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virtual A& operator=(const A&);
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};
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void A::f() { }
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// Another simple vtable dumper test.
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// CHECK: Vtable for 'Test2::B' (6 entries).
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// CHECK-NEXT: 0 | offset_to_top (0)
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// CHECK-NEXT: 1 | Test2::B RTTI
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// CHECK-NEXT: -- (Test2::B, 0) vtable address --
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// CHECK-NEXT: 2 | void Test2::B::f()
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// CHECK-NEXT: 3 | void Test2::B::g() [pure]
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// CHECK-NEXT: 4 | Test2::B::~B() [complete] [pure]
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// CHECK-NEXT: 5 | Test2::B::~B() [deleting] [pure]
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struct B {
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virtual void f();
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virtual void g() = 0;
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virtual ~B() = 0;
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};
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void B::f() { }
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}
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namespace Test3 {
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// If a function in a derived class overrides a function in a primary base,
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// then the function should not have an entry in the derived class (unless the return
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// value requires adjusting).
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// CHECK: Vtable for 'Test3::A' (3 entries).
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// CHECK-NEXT: 0 | offset_to_top (0)
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// CHECK-NEXT: 1 | Test3::A RTTI
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// CHECK-NEXT: -- (Test3::A, 0) vtable address --
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// CHECK-NEXT: 2 | void Test3::A::f()
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struct A {
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virtual void f();
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};
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void A::f() { }
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// CHECK: Vtable for 'Test3::B' (4 entries).
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// CHECK-NEXT: 0 | offset_to_top (0)
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// CHECK-NEXT: 1 | Test3::B RTTI
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// CHECK-NEXT: -- (Test3::A, 0) vtable address --
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// CHECK-NEXT: -- (Test3::B, 0) vtable address --
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// CHECK-NEXT: 2 | void Test3::B::f()
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// CHECK-NEXT: 3 | void Test3::B::g()
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struct B : A {
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virtual void f();
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virtual void g();
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};
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void B::f() { }
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// CHECK: Vtable for 'Test3::C' (5 entries).
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// CHECK-NEXT: 0 | offset_to_top (0)
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// CHECK-NEXT: 1 | Test3::C RTTI
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// CHECK-NEXT: -- (Test3::A, 0) vtable address --
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// CHECK-NEXT: -- (Test3::C, 0) vtable address --
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// CHECK-NEXT: 2 | void Test3::A::f()
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// CHECK-NEXT: 3 | void Test3::C::g()
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// CHECK-NEXT: 4 | void Test3::C::h()
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struct C : A {
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virtual void g();
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virtual void h();
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};
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void C::g() { }
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// CHECK: Vtable for 'Test3::D' (5 entries).
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// CHECK-NEXT: 0 | offset_to_top (0)
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// CHECK-NEXT: 1 | Test3::D RTTI
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// CHECK-NEXT: -- (Test3::A, 0) vtable address --
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// CHECK-NEXT: -- (Test3::B, 0) vtable address --
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// CHECK-NEXT: -- (Test3::D, 0) vtable address --
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// CHECK-NEXT: 2 | void Test3::D::f()
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// CHECK-NEXT: 3 | void Test3::D::g()
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// CHECK-NEXT: 4 | void Test3::D::h()
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struct D : B {
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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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};
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void D::f() { }
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}
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namespace Test4 {
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// Test non-virtual result adjustments.
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struct R1 { int r1; };
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struct R2 { int r2; };
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struct R3 : R1, R2 { int r3; };
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struct A {
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virtual R2 *f();
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};
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// CHECK: Vtable for 'Test4::B' (4 entries).
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// CHECK-NEXT: 0 | offset_to_top (0)
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// CHECK-NEXT: 1 | Test4::B RTTI
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// CHECK-NEXT: -- (Test4::A, 0) vtable address --
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// CHECK-NEXT: -- (Test4::B, 0) vtable address --
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// CHECK-NEXT: 2 | Test4::R3 *Test4::B::f()
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// CHECK-NEXT: [return adjustment: 4 non-virtual]
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// CHECK-NEXT: 3 | Test4::R3 *Test4::B::f()
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struct B : A {
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virtual R3 *f();
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};
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R3 *B::f() { return 0; }
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// Test virtual result adjustments.
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struct V1 { int v1; };
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struct V2 : virtual V1 { int v1; };
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struct C {
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virtual V1 *f();
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};
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// CHECK: Vtable for 'Test4::D' (4 entries).
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// CHECK-NEXT: 0 | offset_to_top (0)
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// CHECK-NEXT: 1 | Test4::D RTTI
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// CHECK-NEXT: -- (Test4::C, 0) vtable address --
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// CHECK-NEXT: -- (Test4::D, 0) vtable address --
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// CHECK-NEXT: 2 | Test4::V2 *Test4::D::f()
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// CHECK-NEXT: [return adjustment: 0 non-virtual, -24 vbase offset offset]
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// CHECK-NEXT: 3 | Test4::V2 *Test4::D::f()
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struct D : C {
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virtual V2 *f();
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};
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V2 *D::f() { return 0; };
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// Virtual result adjustments with an additional non-virtual adjustment.
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struct V3 : virtual R3 { int r3; };
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// CHECK: Vtable for 'Test4::E' (4 entries).
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// CHECK-NEXT: 0 | offset_to_top (0)
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// CHECK-NEXT: 1 | Test4::E RTTI
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// CHECK-NEXT: -- (Test4::A, 0) vtable address --
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// CHECK-NEXT: -- (Test4::E, 0) vtable address --
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// CHECK-NEXT: 2 | Test4::V3 *Test4::E::f()
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// CHECK-NEXT: [return adjustment: 4 non-virtual, -24 vbase offset offset]
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// CHECK-NEXT: 3 | Test4::V3 *Test4::E::f()
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struct E : A {
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virtual V3 *f();
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};
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V3 *E::f() { return 0;}
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// Test that a pure virtual member doesn't get a thunk.
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// CHECK: Vtable for 'Test4::F' (5 entries).
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// CHECK-NEXT: 0 | offset_to_top (0)
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// CHECK-NEXT: 1 | Test4::F RTTI
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// CHECK-NEXT: -- (Test4::A, 0) vtable address --
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// CHECK-NEXT: -- (Test4::F, 0) vtable address --
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// CHECK-NEXT: 2 | Test4::R3 *Test4::F::f() [pure]
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// CHECK-NEXT: 3 | void Test4::F::g()
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// CHECK-NEXT: 4 | Test4::R3 *Test4::F::f() [pure]
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struct F : A {
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virtual void g();
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virtual R3 *f() = 0;
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};
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void F::g() { }
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}
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namespace Test5 {
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// Simple secondary vtables without 'this' pointer adjustments.
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struct A {
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virtual void f();
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virtual void g();
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int a;
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};
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struct B1 : A {
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virtual void f();
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int b1;
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};
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struct B2 : A {
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virtual void g();
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int b2;
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};
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// CHECK: Vtable for 'Test5::C' (9 entries).
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// CHECK-NEXT: 0 | offset_to_top (0)
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// CHECK-NEXT: 1 | Test5::C RTTI
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// CHECK-NEXT: -- (Test5::A, 0) vtable address --
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// CHECK-NEXT: -- (Test5::B1, 0) vtable address --
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// CHECK-NEXT: -- (Test5::C, 0) vtable address --
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// CHECK-NEXT: 2 | void Test5::B1::f()
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// CHECK-NEXT: 3 | void Test5::A::g()
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// CHECK-NEXT: 4 | void Test5::C::h()
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// CHECK-NEXT: 5 | offset_to_top (-16)
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// CHECK-NEXT: 6 | Test5::C RTTI
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// CHECK-NEXT: -- (Test5::A, 16) vtable address --
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// CHECK-NEXT: -- (Test5::B2, 16) vtable address --
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// CHECK-NEXT: 7 | void Test5::A::f()
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// CHECK-NEXT: 8 | void Test5::B2::g()
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struct C : B1, B2 {
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virtual void h();
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};
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void C::h() { }
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}
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namespace Test6 {
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// Simple non-virtual 'this' pointer adjustments.
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struct A1 {
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virtual void f();
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int a;
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};
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struct A2 {
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virtual void f();
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int a;
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};
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// CHECK: Vtable for 'Test6::C' (6 entries).
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// CHECK-NEXT: 0 | offset_to_top (0)
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// CHECK-NEXT: 1 | Test6::C RTTI
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// CHECK-NEXT: -- (Test6::A1, 0) vtable address --
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// CHECK-NEXT: -- (Test6::C, 0) vtable address --
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// CHECK-NEXT: 2 | void Test6::C::f()
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// CHECK-NEXT: 3 | offset_to_top (-16)
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// CHECK-NEXT: 4 | Test6::C RTTI
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// CHECK-NEXT: -- (Test6::A2, 16) vtable address --
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// CHECK-NEXT: 5 | void Test6::C::f()
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// CHECK-NEXT: [this adjustment: -16 non-virtual]
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struct C : A1, A2 {
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virtual void f();
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};
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void C::f() { }
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}
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namespace Test7 {
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// Test that the D::f overrider for A::f have different 'this' pointer
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// adjustments in the two A base subobjects.
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struct A {
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virtual void f();
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int a;
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};
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struct B1 : A { };
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struct B2 : A { };
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struct C { virtual void c(); };
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// CHECK: Vtable for 'Test7::D' (10 entries).
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// CHECK-NEXT: 0 | offset_to_top (0)
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// CHECK-NEXT: 1 | Test7::D RTTI
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// CHECK-NEXT: -- (Test7::C, 0) vtable address --
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// CHECK-NEXT: -- (Test7::D, 0) vtable address --
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// CHECK-NEXT: 2 | void Test7::C::c()
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// CHECK-NEXT: 3 | void Test7::D::f()
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// CHECK-NEXT: 4 | offset_to_top (-8)
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// CHECK-NEXT: 5 | Test7::D RTTI
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// CHECK-NEXT: -- (Test7::A, 8) vtable address --
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// CHECK-NEXT: -- (Test7::B1, 8) vtable address --
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// CHECK-NEXT: 6 | void Test7::D::f()
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// CHECK-NEXT: [this adjustment: -8 non-virtual]
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// CHECK-NEXT: 7 | offset_to_top (-24)
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// CHECK-NEXT: 8 | Test7::D RTTI
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// CHECK-NEXT: -- (Test7::A, 24) vtable address --
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// CHECK-NEXT: -- (Test7::B2, 24) vtable address --
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// CHECK-NEXT: 9 | void Test7::D::f()
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// CHECK-NEXT: [this adjustment: -24 non-virtual]
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struct D : C, B1, B2 {
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virtual void f();
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};
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void D::f() { }
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}
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namespace Test8 {
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// Test that we don't try to layout vtables for classes that don't have
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// virtual bases or virtual member functions.
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struct A { };
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// CHECK: Vtable for 'Test8::B' (3 entries).
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// CHECK-NEXT: 0 | offset_to_top (0)
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// CHECK-NEXT: 1 | Test8::B RTTI
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// CHECK-NEXT: -- (Test8::B, 0) vtable address --
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// CHECK-NEXT: 2 | void Test8::B::f()
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struct B : A {
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virtual void f();
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};
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void B::f() { }
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}
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namespace Test9 {
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// Simple test of vbase offsets.
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struct A1 { int a1; };
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struct A2 { int a2; };
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// CHECK: Vtable for 'Test9::B' (5 entries).
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// CHECK-NEXT: 0 | vbase_offset (16)
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// CHECK-NEXT: 1 | vbase_offset (12)
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// CHECK-NEXT: 2 | offset_to_top (0)
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// CHECK-NEXT: 3 | Test9::B RTTI
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// CHECK-NEXT: -- (Test9::B, 0) vtable address --
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// CHECK-NEXT: 4 | void Test9::B::f()
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struct B : virtual A1, virtual A2 {
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int b;
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virtual void f();
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};
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void B::f() { }
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}
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namespace Test10 {
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// Test for a bug where we would not emit secondary vtables for bases
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// of a primary base.
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struct A1 { virtual void a1(); };
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struct A2 { virtual void a2(); };
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// CHECK: Vtable for 'Test10::C' (7 entries).
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// CHECK-NEXT: 0 | offset_to_top (0)
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// CHECK-NEXT: 1 | Test10::C RTTI
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// CHECK-NEXT: -- (Test10::A1, 0) vtable address --
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// CHECK-NEXT: -- (Test10::B, 0) vtable address --
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// CHECK-NEXT: -- (Test10::C, 0) vtable address --
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// CHECK-NEXT: 2 | void Test10::A1::a1()
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// CHECK-NEXT: 3 | void Test10::C::f()
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// CHECK-NEXT: 4 | offset_to_top (-8)
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// CHECK-NEXT: 5 | Test10::C RTTI
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// CHECK-NEXT: -- (Test10::A2, 8) vtable address --
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// CHECK-NEXT: 6 | void Test10::A2::a2()
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struct B : A1, A2 {
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int b;
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};
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struct C : B {
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virtual void f();
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};
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void C::f() { }
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}
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