forked from OSchip/llvm-project
392 lines
10 KiB
C++
392 lines
10 KiB
C++
// RUN: %clang_cc1 -fno-rtti -emit-llvm -fdump-vtable-layouts %s -o - -cxx-abi microsoft -triple=i386-pc-win32 >%t 2>&1
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// RUN: FileCheck --check-prefix=VTABLE-C %s < %t
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// RUN: FileCheck --check-prefix=VTABLE-D %s < %t
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// RUN: FileCheck --check-prefix=TEST1 %s < %t
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// RUN: FileCheck --check-prefix=TEST2 %s < %t
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// RUN: FileCheck --check-prefix=TEST3 %s < %t
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// RUN: FileCheck --check-prefix=TEST4 %s < %t
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// RUN: FileCheck --check-prefix=TEST5 %s < %t
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// RUN: FileCheck --check-prefix=TEST6 %s < %t
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// RUN: FileCheck --check-prefix=TEST7 %s < %t
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// RUN: FileCheck --check-prefix=TEST8 %s < %t
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// RUN: FileCheck --check-prefix=TEST9-Y %s < %t
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// RUN: FileCheck --check-prefix=TEST9-Z %s < %t
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// RUN: FileCheck --check-prefix=TEST9-W %s < %t
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// RUN: FileCheck --check-prefix=TEST9-T %s < %t
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// RUN: FileCheck --check-prefix=TEST10 %s < %t
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// RUN: FileCheck --check-prefix=RET-W %s < %t
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// RUN: FileCheck --check-prefix=RET-T %s < %t
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struct Empty { };
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struct A {
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virtual void f();
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virtual void z(); // Useful to check there are no thunks for f() when appropriate.
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};
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struct B {
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virtual void g();
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};
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struct C: virtual A {
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// VTABLE-C: VFTable for 'A' in 'C' (2 entries)
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// VTABLE-C-NEXT: 0 | void C::f()
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// VTABLE-C-NEXT: 1 | void A::z()
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// VTABLE-C: VFTable indices for 'C' (1 entries)
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// VTABLE-C-NEXT: vbtable index 1, vfptr at offset 0
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// VTABLE-C-NEXT: 0 | void C::f()
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~C(); // Currently required to have correct record layout, see PR16406
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virtual void f();
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};
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C c;
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struct D: virtual A {
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// VTABLE-D: VFTable for 'D' (1 entries).
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// VTABLE-D-NEXT: 0 | void D::h()
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// VTABLE-D: VFTable for 'A' in 'D' (2 entries).
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// VTABLE-D-NEXT: 0 | void D::f()
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// VTABLE-D-NEXT: 1 | void A::z()
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// VTABLE-D: VFTable indices for 'D' (2 entries).
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// VTABLE-D-NEXT: via vfptr at offset 0
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// VTABLE-D-NEXT: 0 | void D::h()
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// VTABLE-D-NEXT: via vbtable index 1, vfptr at offset 0
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// VTABLE-D-NEXT: 0 | void D::f()
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virtual void f();
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virtual void h();
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};
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void D::h() {}
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D d;
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namespace Test1 {
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struct X { int x; };
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// X and A get reordered in the layout since X doesn't have a vfptr while A has.
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struct Y : X, A { };
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struct Z : virtual Y {
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// TEST1: VFTable for 'A' in 'Test1::Y' in 'Test1::Z' (2 entries).
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// TEST1-NEXT: 0 | void A::f()
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// TEST1-NEXT: 1 | void A::z()
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// TEST1-NOT: VFTable indices for 'Test1::Z'
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};
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Z z;
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}
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namespace Test2 {
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struct X: virtual A, virtual B {
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// TEST2: VFTable for 'Test2::X' (1 entries).
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// TEST2-NEXT: 0 | void Test2::X::h()
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// TEST2: VFTable for 'A' in 'Test2::X' (2 entries).
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// TEST2-NEXT: 0 | void A::f()
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// TEST2-NEXT: 1 | void A::z()
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// TEST2: VFTable for 'B' in 'Test2::X' (1 entries).
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// TEST2-NEXT: 0 | void B::g()
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// TEST2: VFTable indices for 'Test2::X' (1 entries).
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// TEST2-NEXT: 0 | void Test2::X::h()
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virtual void h();
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};
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X x;
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}
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namespace Test3 {
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struct X : virtual A { };
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struct Y: virtual X {
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// TEST3: VFTable for 'A' in 'Test3::X' in 'Test3::Y' (2 entries).
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// TEST3-NEXT: 0 | void A::f()
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// TEST3-NEXT: 1 | void A::z()
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// TEST3-NOT: VFTable indices for 'Test3::Y'
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};
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Y y;
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}
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namespace Test4 {
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struct X: virtual C {
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// This one's interesting. C::f expects (A*) to be passed as 'this' and does
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// ECX-=4 to cast to (C*). In X, C and A vbases are reordered, so the thunk
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// should pass a pointer to the end of X in order
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// for ECX-=4 to point at the C part.
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// TEST4: VFTable for 'A' in 'C' in 'Test4::X' (2 entries).
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// TEST4-NEXT: 0 | void C::f()
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// TEST4-NEXT: [this adjustment: 12 non-virtual]
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// TEST4-NEXT: 1 | void A::z()
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// TEST4-NOT: VFTable indices for 'Test4::X'
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};
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X x;
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}
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namespace Test5 {
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// New methods are added to the base's vftable.
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struct X : A {
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virtual void g();
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};
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struct Y : virtual X {
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// TEST5: VFTable for 'Test5::Y' (1 entries).
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// TEST5-NEXT: 0 | void Test5::Y::h()
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// TEST5: VFTable for 'A' in 'Test5::X' in 'Test5::Y' (3 entries).
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// TEST5-NEXT: 0 | void A::f()
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// TEST5-NEXT: 1 | void A::z()
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// TEST5-NEXT: 2 | void Test5::X::g()
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// TEST5: VFTable indices for 'Test5::Y' (1 entries).
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// TEST5-NEXT: 0 | void Test5::Y::h()
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virtual void h();
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};
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Y y;
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}
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namespace Test6 {
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struct X : A, virtual Empty {
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// TEST6: VFTable for 'A' in 'Test6::X' (2 entries).
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// TEST6-NEXT: 0 | void A::f()
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// TEST6-NEXT: 1 | void A::z()
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// TEST6-NOT: VFTable indices for 'Test6::X'
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};
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X x;
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}
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namespace Test7 {
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struct X : C { };
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struct Y : virtual X {
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// TEST7: VFTable for 'A' in 'C' in 'Test7::X' in 'Test7::Y' (2 entries).
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// TEST7-NEXT: 0 | void C::f()
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// TEST7-NEXT: [this adjustment: 12 non-virtual]
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// TEST7-NEXT: 1 | void A::z()
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// TEST7: Thunks for 'void C::f()' (1 entry).
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// TEST7-NEXT: 0 | this adjustment: 12 non-virtual
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// TEST7-NOT: VFTable indices for 'Test7::Y'
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};
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Y y;
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}
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namespace Test8 {
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// This is a typical diamond inheritance with a shared 'A' vbase.
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struct X : D, C {
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// TEST8: VFTable for 'D' in 'Test8::X' (1 entries).
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// TEST8-NEXT: 0 | void D::h()
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// TEST8: VFTable for 'A' in 'D' in 'Test8::X' (2 entries).
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// TEST8-NEXT: 0 | void Test8::X::f()
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// TEST8-NEXT: 1 | void A::z()
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// TEST8: VFTable indices for 'Test8::X' (1 entries).
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// TEST8-NEXT: via vbtable index 1, vfptr at offset 0
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virtual void f();
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};
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X x;
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}
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namespace Test9 {
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struct X : A { };
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struct Y : virtual X {
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// TEST9-Y: VFTable for 'Test9::Y' (1 entries).
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// TEST9-Y-NEXT: 0 | void Test9::Y::h()
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// TEST9-Y: VFTable for 'A' in 'Test9::X' in 'Test9::Y' (2 entries).
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// TEST9-Y-NEXT: 0 | void A::f()
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// TEST9-Y-NEXT: 1 | void A::z()
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// TEST9-Y: VFTable indices for 'Test9::Y' (1 entries).
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// TEST9-Y-NEXT: 0 | void Test9::Y::h()
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virtual void h();
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};
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Y y;
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struct Z : Y, virtual B {
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// TEST9-Z: VFTable for 'Test9::Y' in 'Test9::Z' (1 entries).
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// TEST9-Z-NEXT: 0 | void Test9::Y::h()
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// TEST9-Z: VFTable for 'A' in 'Test9::X' in 'Test9::Y' in 'Test9::Z' (2 entries).
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// TEST9-Z-NEXT: 0 | void A::f()
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// TEST9-Z-NEXT: 1 | void A::z()
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// TEST9-Z: VFTable for 'B' in 'Test9::Z' (1 entries).
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// TEST9-Z-NEXT: 0 | void B::g()
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// TEST9-Z-NOT: VFTable indices for 'Test9::Z'
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};
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Z z;
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struct W : Z, D, virtual A, virtual B {
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// TEST9-W: VFTable for 'Test9::Y' in 'Test9::Z' in 'Test9::W' (1 entries).
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// TEST9-W-NEXT: 0 | void Test9::Y::h()
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// TEST9-W: VFTable for 'A' in 'Test9::X' in 'Test9::Y' in 'Test9::Z' in 'Test9::W' (2 entries).
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// TEST9-W-NEXT: 0 | void A::f()
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// TEST9-W-NEXT: 1 | void A::z()
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// TEST9-W: VFTable for 'B' in 'Test9::Z' in 'Test9::W' (1 entries).
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// TEST9-W-NEXT: 0 | void B::g()
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// TEST9-W: VFTable for 'D' in 'Test9::W' (1 entries).
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// TEST9-W-NEXT: 0 | void D::h()
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// TEST9-W: VFTable for 'A' in 'D' in 'Test9::W' (2 entries).
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// TEST9-W-NEXT: 0 | void D::f()
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// TEST9-W-NEXT: [this adjustment: -8 non-virtual]
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// TEST9-W-NEXT: 1 | void A::z()
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// TEST9-W: Thunks for 'void D::f()' (1 entry).
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// TEST9-W-NEXT: 0 | this adjustment: -8 non-virtual
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// TEST9-W-NOT: VFTable indices for 'Test9::W'
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};
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W w;
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struct T : Z, D, virtual A, virtual B {
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~T(); // Currently required to have correct record layout, see PR16406
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// TEST9-T: VFTable for 'Test9::Y' in 'Test9::Z' in 'Test9::T' (1 entries).
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// TEST9-T-NEXT: 0 | void Test9::T::h()
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// TEST9-T: VFTable for 'A' in 'Test9::X' in 'Test9::Y' in 'Test9::Z' in 'Test9::T' (2 entries).
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// TEST9-T-NEXT: 0 | void Test9::T::f()
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// TEST9-T-NEXT: 1 | void Test9::T::z()
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// TEST9-T: VFTable for 'B' in 'Test9::Z' in 'Test9::T' (1 entries).
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// TEST9-T-NEXT: 0 | void Test9::T::g()
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// TEST9-T: VFTable for 'D' in 'Test9::T' (1 entries).
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// TEST9-T-NEXT: 0 | void Test9::T::h()
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// TEST9-T-NEXT: [this adjustment: -8 non-virtual]
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// TEST9-T: Thunks for 'void Test9::T::h()' (1 entry).
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// TEST9-T-NEXT: 0 | this adjustment: -8 non-virtual
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// TEST9-T: VFTable for 'A' in 'D' in 'Test9::T' (2 entries).
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// TEST9-T-NEXT: 0 | void Test9::T::f()
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// TEST9-T-NEXT: [this adjustment: -16 non-virtual]
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// TEST9-T-NEXT: 1 | void Test9::T::z()
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// TEST9-T-NEXT: [this adjustment: -16 non-virtual]
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// TEST9-T: Thunks for 'void Test9::T::f()' (1 entry).
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// TEST9-T-NEXT: 0 | this adjustment: -16 non-virtual
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// TEST9-T: Thunks for 'void Test9::T::z()' (1 entry).
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// TEST9-T-NEXT: 0 | this adjustment: -16 non-virtual
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// TEST9-T: VFTable indices for 'Test9::T' (4 entries).
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// TEST9-T-NEXT: via vfptr at offset 0
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// TEST9-T-NEXT: 0 | void Test9::T::h()
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// TEST9-T-NEXT: via vbtable index 1, vfptr at offset 0
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// TEST9-T-NEXT: 0 | void Test9::T::f()
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// TEST9-T-NEXT: 1 | void Test9::T::z()
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// TEST9-T-NEXT: via vbtable index 2, vfptr at offset 0
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// TEST9-T-NEXT: 0 | void Test9::T::g()
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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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virtual void z();
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};
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T t;
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}
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namespace Test10 {
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struct X : virtual C, virtual A {
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// TEST10: VFTable for 'A' in 'C' in 'Test10::X' (2 entries).
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// TEST10-NEXT: 0 | void Test10::X::f()
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// TEST10-NEXT: 1 | void A::z()
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// TEST10: VFTable indices for 'Test10::X' (1 entries).
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// TEST10-NEXT: via vbtable index 1, vfptr at offset 0
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// TEST10-NEXT: 0 | void Test10::X::f()
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virtual void f();
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};
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void X::f() {}
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X x;
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}
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namespace return_adjustment {
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struct X : virtual A {
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virtual void f();
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};
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struct Y : virtual A, virtual X {
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virtual void f();
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};
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struct Z {
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virtual A* foo();
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};
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struct W : Z {
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// RET-W: VFTable for 'return_adjustment::Z' in 'return_adjustment::W' (2 entries).
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// RET-W-NEXT: 0 | return_adjustment::X *return_adjustment::W::foo()
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// RET-W-NEXT: [return adjustment: vbase #1, 0 non-virtual]
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// RET-W-NEXT: 1 | return_adjustment::X *return_adjustment::W::foo()
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// RET-W: VFTable indices for 'return_adjustment::W' (1 entries).
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// RET-W-NEXT: 1 | return_adjustment::X *return_adjustment::W::foo()
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virtual X* foo();
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};
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W y;
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struct T : W {
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// RET-T: VFTable for 'return_adjustment::Z' in 'return_adjustment::W' in 'return_adjustment::T' (3 entries).
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// RET-T-NEXT: 0 | return_adjustment::Y *return_adjustment::T::foo()
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// RET-T-NEXT: [return adjustment: vbase #1, 0 non-virtual]
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// RET-T-NEXT: 1 | return_adjustment::Y *return_adjustment::T::foo()
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// RET-T-NEXT: [return adjustment: vbase #2, 0 non-virtual]
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// RET-T-NEXT: 2 | return_adjustment::Y *return_adjustment::T::foo()
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// RET-T: VFTable indices for 'return_adjustment::T' (1 entries).
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// RET-T-NEXT: 2 | return_adjustment::Y *return_adjustment::T::foo()
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virtual Y* foo();
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};
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T t;
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}
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