575 lines
16 KiB
C++
575 lines
16 KiB
C++
// RUN: %clang_cc1 -fno-rtti -emit-llvm -o %t.ll -fdump-vtable-layouts %s -cxx-abi microsoft -triple=i386-pc-win32 >%t
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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-X %s < %t
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// RUN: FileCheck --check-prefix=TEST8-Z %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=VDTORS-Y %s < %t
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// RUN: FileCheck --check-prefix=VDTORS-U %s < %t
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// RUN: FileCheck --check-prefix=VDTORS-V %s < %t
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// RUN: FileCheck --check-prefix=VDTORS-P %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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// RUN: FileCheck --check-prefix=RET-V %s < %t
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// RUN: FileCheck --check-prefix=MANGLING %s < %t.ll
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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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// MANGLING-DAG: @"\01??_7C@@6B@"
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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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// MANGLING-DAG: @"\01??_7D@@6B0@@"
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// MANGLING-DAG: @"\01??_7D@@6BA@@@"
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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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// MANGLING-DAG: @"\01??_7Y@Test1@@6B@"
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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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// MANGLING-DAG: @"\01??_7Z@Test1@@6B@"
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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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// MANGLING-DAG: @"\01??_7X@Test2@@6B01@@"
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// MANGLING-DAG: @"\01??_7X@Test2@@6BA@@@"
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// MANGLING-DAG: @"\01??_7X@Test2@@6BB@@@"
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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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// MANGLING-DAG: @"\01??_7X@Test3@@6B@"
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};
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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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// MANGLING-DAG: @"\01??_7Y@Test3@@6B@"
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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: 8 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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// MANGLING-DAG: @"\01??_7X@Test4@@6B@"
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// Also check the mangling of the thunk.
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// MANGLING-DAG: define weak x86_thiscallcc void @"\01?f@C@@WPPPPPPPI@AEXXZ"
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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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// MANGLING-DAG: @"\01??_7X@Test5@@6B@"
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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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// MANGLING-DAG: @"\01??_7Y@Test5@@6B01@@"
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// MANGLING-DAG: @"\01??_7Y@Test5@@6BX@1@@"
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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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// MANGLING-DAG: @"\01??_7X@Test6@@6B@"
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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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// MANGLING-DAG: @"\01??_7X@Test7@@6B@"
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};
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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: 8 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: 8 non-virtual]
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// TEST7-NOT: VFTable indices for 'Test7::Y'
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// MANGLING-DAG: @"\01??_7Y@Test7@@6B@"
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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-X: VFTable for 'D' in 'Test8::X' (1 entries).
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// TEST8-X-NEXT: 0 | void D::h()
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// TEST8-X: VFTable for 'A' in 'D' in 'Test8::X' (2 entries).
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// TEST8-X-NEXT: 0 | void Test8::X::f()
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// TEST8-X-NEXT: 1 | void A::z()
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// TEST8-X: VFTable indices for 'Test8::X' (1 entries).
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// TEST8-X-NEXT: via vbtable index 1, vfptr at offset 0
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// TEST8-X-NEXT: 0 | void Test8::X::f()
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// MANGLING-DAG: @"\01??_7X@Test8@@6BA@@@"
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// MANGLING-DAG: @"\01??_7X@Test8@@6BD@@@"
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virtual void f();
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};
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X x;
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// Another diamond inheritance which led to AST crashes.
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struct Y : virtual A {};
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class Z : Y, C {
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// TEST8-Z: VFTable for 'A' in 'Test8::Y' in 'Test8::Z' (2 entries).
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// TEST8-Z-NEXT: 0 | void Test8::Z::f()
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// TEST8-Z-NEXT: 1 | void A::z()
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// TEST8-Z: VFTable indices for 'Test8::Z' (1 entries).
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// TEST8-Z-NEXT: via vbtable index 1, vfptr at offset 0
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// TEST8-Z-NEXT: 0 | void Test8::Z::f()
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virtual void f();
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};
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Z z;
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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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// MANGLING-DAG: @"\01??_7Y@Test9@@6B01@@"
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// MANGLING-DAG: @"\01??_7Y@Test9@@6BX@1@@"
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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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// MANGLING-DAG: @"\01??_7Z@Test9@@6BX@1@@"
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// MANGLING-DAG: @"\01??_7Z@Test9@@6BY@1@@"
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// FIXME this one is wrong:
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// INCORRECT MANGLING-DAG: @"\01??_7Z@Test9@@6BB@@@"
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// MANGLING-DAG-SHOULD-BE: @"\01??_7Z@Test9@@6B@"
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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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// MANGLING-DAG: @"\01??_7W@Test9@@6BA@@@"
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// MANGLING-DAG: @"\01??_7W@Test9@@6BD@@@"
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// MANGLING-DAG: @"\01??_7W@Test9@@6BX@1@@"
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// FIXME: these two are wrong:
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// INCORRECT MANGLING-DAG: @"\01??_7W@Test9@@6BB@@@"
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// MANGLING-DAG-SHOULD-BE: @"\01??_7W@Test9@@6B@"
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// INCORRECT MANGLING-DAG: @"\01??_7W@Test9@@6BY@1@Z@1@@"
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// MANGLING-DAG-SHOULD-BE: @"\01??_7W@Test9@@6BY@1@@"
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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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// 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: -8 non-virtual]
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// TEST9-T-NEXT: 1 | void Test9::T::z()
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// TEST9-T-NEXT: [this adjustment: -8 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: -8 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: -8 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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// MANGLING-DAG: @"\01??_7T@Test9@@6BA@@@"
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// MANGLING-DAG: @"\01??_7T@Test9@@6BD@@@"
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// MANGLING-DAG: @"\01??_7T@Test9@@6BX@1@@"
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// FIXME: these two are wrong:
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// INCORRECT MANGLING-DAG: @"\01??_7T@Test9@@6BB@@@"
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// MANGLING-DAG-SHOULD-BE: @"\01??_7T@Test9@@6B@"
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// INCORRECT MANGLING-DAG: @"\01??_7T@Test9@@6BY@1@Z@1@@"
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// MANGLING-DAG-SHOULD-BE: @"\01??_7T@Test9@@6BY@1@@"
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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 vdtors {
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struct X {
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virtual ~X();
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virtual void zzz();
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};
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struct Y : virtual X {
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// VDTORS-Y: VFTable for 'vdtors::X' in 'vdtors::Y' (2 entries).
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// VDTORS-Y-NEXT: 0 | vdtors::Y::~Y() [scalar deleting]
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// VDTORS-Y-NEXT: 1 | void vdtors::X::zzz()
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// VDTORS-Y-NOT: Thunks for 'vdtors::Y::~Y()'
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virtual ~Y();
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};
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|
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Y y;
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|
|
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struct Z {
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virtual void z();
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};
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|
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struct W : Z, X {
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// Implicit virtual dtor.
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};
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|
|
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struct U : virtual W {
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// VDTORS-U: VFTable for 'vdtors::Z' in 'vdtors::W' in 'vdtors::U' (1 entries).
|
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// VDTORS-U-NEXT: 0 | void vdtors::Z::z()
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|
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// VDTORS-U: VFTable for 'vdtors::X' in 'vdtors::W' in 'vdtors::U' (2 entries).
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// VDTORS-U-NEXT: 0 | vdtors::U::~U() [scalar deleting]
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// VDTORS-U-NEXT: [this adjustment: -4 non-virtual]
|
|
// VDTORS-U-NEXT: 1 | void vdtors::X::zzz()
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|
|
|
// VDTORS-U: Thunks for 'vdtors::W::~W()' (1 entry).
|
|
// VDTORS-U-NEXT: 0 | [this adjustment: -4 non-virtual]
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|
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|
// VDTORS-U: VFTable indices for 'vdtors::U' (1 entries).
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|
// VDTORS-U-NEXT: -- accessible via vbtable index 1, vfptr at offset 4 --
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|
// VDTORS-U-NEXT: 0 | vdtors::U::~U() [scalar deleting]
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|
virtual ~U();
|
|
};
|
|
|
|
U u;
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|
|
|
struct V : virtual W {
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|
// VDTORS-V: VFTable for 'vdtors::Z' in 'vdtors::W' in 'vdtors::V' (1 entries).
|
|
// VDTORS-V-NEXT: 0 | void vdtors::Z::z()
|
|
|
|
// VDTORS-V: VFTable for 'vdtors::X' in 'vdtors::W' in 'vdtors::V' (2 entries).
|
|
// VDTORS-V-NEXT: 0 | vdtors::V::~V() [scalar deleting]
|
|
// VDTORS-V-NEXT: [this adjustment: -4 non-virtual]
|
|
// VDTORS-V-NEXT: 1 | void vdtors::X::zzz()
|
|
|
|
// VDTORS-V: Thunks for 'vdtors::W::~W()' (1 entry).
|
|
// VDTORS-V-NEXT: 0 | [this adjustment: -4 non-virtual]
|
|
|
|
// VDTORS-V: VFTable indices for 'vdtors::V' (1 entries).
|
|
// VDTORS-V-NEXT: -- accessible via vbtable index 1, vfptr at offset 4 --
|
|
// VDTORS-V-NEXT: 0 | vdtors::V::~V() [scalar deleting]
|
|
};
|
|
|
|
V v;
|
|
|
|
struct T : virtual X {
|
|
virtual ~T();
|
|
};
|
|
|
|
struct P : T, Y {
|
|
// VDTORS-P: VFTable for 'vdtors::X' in 'vdtors::T' in 'vdtors::P' (2 entries).
|
|
// VDTORS-P-NEXT: 0 | vdtors::P::~P() [scalar deleting]
|
|
// VDTORS-P-NEXT: 1 | void vdtors::X::zzz()
|
|
|
|
// VDTORS-P-NOT: Thunks for 'vdtors::P::~P()'
|
|
virtual ~P();
|
|
};
|
|
|
|
P p;
|
|
|
|
}
|
|
|
|
namespace return_adjustment {
|
|
|
|
struct X : virtual A {
|
|
virtual void f();
|
|
};
|
|
|
|
struct Y : virtual A, virtual X {
|
|
virtual void f();
|
|
};
|
|
|
|
struct Z {
|
|
virtual A* foo();
|
|
};
|
|
|
|
struct W : Z {
|
|
// RET-W: VFTable for 'return_adjustment::Z' in 'return_adjustment::W' (2 entries).
|
|
// RET-W-NEXT: 0 | return_adjustment::X *return_adjustment::W::foo()
|
|
// RET-W-NEXT: [return adjustment: vbase #1, 0 non-virtual]
|
|
// RET-W-NEXT: 1 | return_adjustment::X *return_adjustment::W::foo()
|
|
|
|
// RET-W: VFTable indices for 'return_adjustment::W' (1 entries).
|
|
// RET-W-NEXT: 1 | return_adjustment::X *return_adjustment::W::foo()
|
|
|
|
virtual X* foo();
|
|
};
|
|
|
|
W y;
|
|
|
|
struct T : W {
|
|
// RET-T: VFTable for 'return_adjustment::Z' in 'return_adjustment::W' in 'return_adjustment::T' (3 entries).
|
|
// RET-T-NEXT: 0 | return_adjustment::Y *return_adjustment::T::foo()
|
|
// RET-T-NEXT: [return adjustment: vbase #1, 0 non-virtual]
|
|
// RET-T-NEXT: 1 | return_adjustment::Y *return_adjustment::T::foo()
|
|
// RET-T-NEXT: [return adjustment: vbase #2, 0 non-virtual]
|
|
// RET-T-NEXT: 2 | return_adjustment::Y *return_adjustment::T::foo()
|
|
|
|
// RET-T: VFTable indices for 'return_adjustment::T' (1 entries).
|
|
// RET-T-NEXT: 2 | return_adjustment::Y *return_adjustment::T::foo()
|
|
|
|
virtual Y* foo();
|
|
};
|
|
|
|
T t;
|
|
|
|
struct U : virtual A {
|
|
virtual void g(); // adds a vfptr
|
|
};
|
|
|
|
struct V : Z {
|
|
// RET-V: VFTable for 'return_adjustment::Z' in 'return_adjustment::V' (2 entries).
|
|
// RET-V-NEXT: 0 | return_adjustment::U *return_adjustment::V::foo()
|
|
// RET-V-NEXT: [return adjustment: vbptr at offset 4, vbase #1, 0 non-virtual]
|
|
// RET-V-NEXT: 1 | return_adjustment::U *return_adjustment::V::foo()
|
|
|
|
// RET-V: VFTable indices for 'return_adjustment::V' (1 entries).
|
|
// RET-V-NEXT: 1 | return_adjustment::U *return_adjustment::V::foo()
|
|
|
|
virtual U* foo();
|
|
};
|
|
|
|
V v;
|
|
}
|