First step towards vftable generation with -cxx-abi microsoft PR13231

llvm-svn: 173035

1 files changed, 113 insertions, 0 deletions

diff --git a/clang/test/CodeGenCXX/microsoft-abi-vtables-single-inheritance.cpp b/clang/test/CodeGenCXX/microsoft-abi-vtables-single-inheritance.cpp
new file mode 100644
index 00000000000..176ecf19f1f
--- /dev/null
+++ b/clang/test/CodeGenCXX/microsoft-abi-vtables-single-inheritance.cpp
@@ -0,0 +1,113 @@
+// RUN: %clang_cc1 %s -fno-rtti -cxx-abi microsoft -triple=i386-pc-win32 -emit-llvm -fdump-vtable-layouts -o - > %t 2>&1
+// RUN: FileCheck --check-prefix=EMITS-VTABLE %s < %t
+// RUN: FileCheck --check-prefix=CHECK-A %s < %t
+// RUN: FileCheck --check-prefix=CHECK-B %s < %t
+// RUN: FileCheck --check-prefix=CHECK-C %s < %t
+// RUN: FileCheck --check-prefix=CHECK-D %s < %t
+// RUN: FileCheck --check-prefix=CHECK-E %s < %t
+// RUN: FileCheck --check-prefix=CHECK-F %s < %t
+// RUN: FileCheck --check-prefix=CHECK-G %s < %t
+
+struct A {
+  // CHECK-A: Vtable for 'A' (3 entries)
+  // CHECK-A-NEXT: 0 | void A::f()
+  // CHECK-A-NEXT: 1 | void A::g()
+  // CHECK-A-NEXT: 2 | void A::h()
+  // EMITS-VTABLE: @"\01??_7A@@6B@" = unnamed_addr constant [3 x i8*]
+  virtual void f();
+  virtual void g();
+  virtual void h();
+  int ia;
+};
+void A::f() {}
+
+struct B : A {
+  // CHECK-B: Vtable for 'B' (5 entries)
+  // CHECK-B-NEXT: 0 | void B::f()
+  // CHECK-B-NEXT: 1 | void A::g()
+  // CHECK-B-NEXT: 2 | void A::h()
+  // CHECK-B-NEXT: 3 | void B::i()
+  // CHECK-B-NEXT: 4 | void B::j()
+  // EMITS-VTABLE: @"\01??_7B@@6B@" = unnamed_addr constant [5 x i8*]
+  virtual void f();  // overrides A::f()
+  virtual void i();
+  virtual void j();
+};
+void B::f() {}
+
+struct C {
+  // CHECK-C: Vtable for 'C' (2 entries)
+  // CHECK-C-NEXT: 0 | C::~C()
+  // CHECK-C-NEXT: 1 | void C::f()
+  // CHECK-C: VTable indices for 'C' (2 entries).
+  // CHECK-C-NEXT: 0 | C::~C()
+  // CHECK-C-NEXT: 1 | void C::f()
+  // Never used, so doesn't emit a vtable.
+  virtual ~C();
+
+  virtual void f();
+};
+void C::f() {}
+
+struct D {
+  // CHECK-D: Vtable for 'D' (2 entries)
+  // CHECK-D-NEXT: 0 | void D::f()
+  // CHECK-D-NEXT: 1 | D::~D()
+  // EMITS-VTABLE: @"\01??_7D@@6B@" = unnamed_addr constant [2 x i8*]
+  virtual void f();
+
+  virtual ~D();
+};
+void D::f() {}
+
+struct E : A {
+  // CHECK-E: Vtable for 'E' (5 entries)
+  // CHECK-E-NEXT: 0 | void A::f()
+  // CHECK-E-NEXT: 1 | void A::g()
+  // CHECK-E-NEXT: 2 | void A::h()
+  // CHECK-E-NEXT: 3 | E::~E()
+  // CHECK-E-NEXT: 4 | void E::i()
+  // CHECK-E: VTable indices for 'E' (2 entries).
+  // CHECK-E-NEXT: 3 | E::~E()
+  // CHECK-E-NEXT: 4 | void E::i()
+
+  // Never used, so doesn't emit a vtable.
+  virtual ~E();
+  virtual void i();
+};
+void E::i() {}
+
+struct F : A {
+  // CHECK-F: Vtable for 'F' (5 entries)
+  // CHECK-F-NEXT: 0 | void A::f()
+  // CHECK-F-NEXT: 1 | void A::g()
+  // CHECK-F-NEXT: 2 | void A::h()
+  // CHECK-F-NEXT: 3 | void F::i()
+  // CHECK-F-NEXT: 4 | F::~F()
+  // CHECK-F: VTable indices for 'F' (2 entries).
+  // CHECK-F-NEXT: 3 | void F::i()
+  // CHECK-F-NEXT: 4 | F::~F()
+  // EMITS-VTABLE: @"\01??_7F@@6B@" = unnamed_addr constant [5 x i8*]
+  virtual void i();
+  virtual ~F();
+};
+void F::i() {}
+
+struct G : E {
+  // CHECK-G: Vtable for 'G' (6 entries)
+  // CHECK-G-NEXT: 0 | void G::f()
+  // CHECK-G-NEXT: 1 | void A::g()
+  // CHECK-G-NEXT: 2 | void A::h()
+  // CHECK-G-NEXT: 3 | G::~G()
+  // CHECK-G-NEXT: 4 | void E::i()
+  // CHECK-G-NEXT: 5 | void G::j()
+  // CHECK-G: VTable indices for 'G' (3 entries).
+  // CHECK-G-NEXT: 0 | void G::f()
+  // CHECK-G-NEXT: 3 | G::~G()
+  // CHECK-G-NEXT: 5 | void G::j()
+  // Never used, so doesn't emit a vtable.
+  virtual void f();  // overrides A::f()
+  virtual ~G();
+  virtual void j();
+};
+void G::j() {}