Add the clang library to the repo (with some of my changes, too).

1 files changed, 205 insertions, 0 deletions

diff --git a/clang/test/CodeGenCXX/rtti-layout.cpp b/clang/test/CodeGenCXX/rtti-layout.cpp
new file mode 100644
index 0000000..7128c4e
--- /dev/null
+++ b/clang/test/CodeGenCXX/rtti-layout.cpp
@@ -0,0 +1,205 @@
+// RUN: %clang_cc1 %s -I%S -triple=x86_64-apple-darwin10 -emit-llvm -O3 -o - | FileCheck %s
+#include <typeinfo>
+
+// vtables.
+extern "C" {
+  const void *_ZTVN10__cxxabiv123__fundamental_type_infoE;
+  const void *_ZTVN10__cxxabiv117__class_type_infoE;
+  const void *_ZTVN10__cxxabiv120__si_class_type_infoE;
+  const void *_ZTVN10__cxxabiv121__vmi_class_type_infoE;
+  const void *_ZTVN10__cxxabiv119__pointer_type_infoE;
+  const void *_ZTVN10__cxxabiv129__pointer_to_member_type_infoE;
+};
+#define fundamental_type_info_vtable _ZTVN10__cxxabiv123__fundamental_type_infoE
+#define class_type_info_vtable _ZTVN10__cxxabiv117__class_type_infoE
+#define si_class_type_info_vtable _ZTVN10__cxxabiv120__si_class_type_infoE
+#define vmi_class_type_info_vtable _ZTVN10__cxxabiv121__vmi_class_type_infoE
+#define pointer_type_info_vtable _ZTVN10__cxxabiv119__pointer_type_infoE
+#define pointer_to_member_type_info_vtable _ZTVN10__cxxabiv129__pointer_to_member_type_infoE
+
+class __pbase_type_info : public std::type_info {
+public:
+  unsigned int __flags;
+  const std::type_info *__pointee;
+
+  enum __masks {
+    __const_mask = 0x1,
+    __volatile_mask = 0x2,
+    __restrict_mask = 0x4,
+    __incomplete_mask = 0x8,
+    __incomplete_class_mask = 0x10
+  };
+};
+
+class __class_type_info : public std::type_info { };
+
+class __si_class_type_info : public __class_type_info {
+public:
+  const __class_type_info *__base_type;
+};
+
+struct __base_class_type_info {
+public:
+ const __class_type_info *__base_type;
+ long __offset_flags;
+
+ enum __offset_flags_masks {
+   __virtual_mask = 0x1,
+   __public_mask = 0x2,
+   __offset_shift = 8
+ };
+};
+
+class __vmi_class_type_info : public __class_type_info {
+public:
+  unsigned int __flags;
+  unsigned int __base_count;
+  __base_class_type_info __base_info[1];
+
+  enum __flags_masks {
+    __non_diamond_repeat_mask = 0x1,
+    __diamond_shaped_mask = 0x2
+  };
+};
+
+template<typename T> const T& to(const std::type_info &info) {
+return static_cast<const T&>(info);
+}
+struct Incomplete;
+
+struct A { int a; };
+struct Empty { };
+
+struct SI1 : A { };
+struct SI2 : Empty { };
+struct SI3 : Empty { virtual void f() { } };
+
+struct VMI1 : private A { };
+struct VMI2 : virtual A { };
+struct VMI3 : A { virtual void f() { } };
+struct VMI4 : A, Empty { };
+
+struct VMIBase1 { int a; };
+struct VMIBase2 : VMIBase1 { int a; };
+struct VMI5 : VMIBase1, VMIBase2 { int a; };
+
+struct VMIBase3 : virtual VMIBase1 { int a; };
+struct VMI6 : virtual VMIBase1, VMIBase3 { int a; };
+
+struct VMI7 : VMIBase1, VMI5, private VMI6 { };
+
+#define CHECK(x) if (!(x)) return __LINE__
+#define CHECK_VTABLE(type, vtable) CHECK(&vtable##_type_info_vtable + 2 == (((void **)&(typeid(type)))[0]))
+#define CHECK_BASE_INFO_TYPE(type, index, base) CHECK(to<__vmi_class_type_info>(typeid(type)).__base_info[(index)].__base_type == &typeid(base))
+#define CHECK_BASE_INFO_OFFSET_FLAGS(type, index, offset, flags) CHECK(to<__vmi_class_type_info>(typeid(type)).__base_info[(index)].__offset_flags == (((offset) << 8) | (flags)))
+
+struct B {
+  static int const volatile (*a)[10];
+  static int (*b)[10];
+  
+  static int const volatile (B::*c)[10];
+  static int (B::*d)[10];
+};
+
+// CHECK: define i32 @_Z1fv()
+int f() {
+  // Vectors should be treated as fundamental types.
+  typedef short __v4hi __attribute__ ((__vector_size__ (8)));
+  CHECK_VTABLE(__v4hi, fundamental);
+
+  // A does not have any bases.
+  CHECK_VTABLE(A, class);
+  
+  // SI1 has a single public base.
+  CHECK_VTABLE(SI1, si_class);
+  CHECK(to<__si_class_type_info>(typeid(SI1)).__base_type == &typeid(A));
+  
+  // SI2 has a single public empty base.
+  CHECK_VTABLE(SI2, si_class);
+  CHECK(to<__si_class_type_info>(typeid(SI2)).__base_type == &typeid(Empty));
+
+  // SI3 has a single public empty base. SI3 is dynamic whereas Empty is not, but since Empty is
+  // an empty class, it will still be at offset zero.
+  CHECK_VTABLE(SI3, si_class);
+  CHECK(to<__si_class_type_info>(typeid(SI3)).__base_type == &typeid(Empty));
+
+  // VMI1 has a single base, but it is private.
+  CHECK_VTABLE(VMI1, vmi_class);
+
+  // VMI2 has a single base, but it is virtual.
+  CHECK_VTABLE(VMI2, vmi_class);
+
+  // VMI3 has a single base, but VMI3 is dynamic whereas A is not, and A is not empty.
+  CHECK_VTABLE(VMI3, vmi_class);
+
+  // VMI4 has two bases.
+  CHECK_VTABLE(VMI4, vmi_class);
+
+  // VMI5 has non-diamond shaped inheritance.
+  CHECK_VTABLE(VMI5, vmi_class);
+  CHECK(to<__vmi_class_type_info>(typeid(VMI5)).__flags == __vmi_class_type_info::__non_diamond_repeat_mask);
+  CHECK(to<__vmi_class_type_info>(typeid(VMI5)).__base_count == 2);
+  CHECK_BASE_INFO_TYPE(VMI5, 0, VMIBase1);
+  CHECK_BASE_INFO_OFFSET_FLAGS(VMI5, 0, 0, __base_class_type_info::__public_mask);
+  CHECK_BASE_INFO_TYPE(VMI5, 1, VMIBase2);
+  CHECK_BASE_INFO_OFFSET_FLAGS(VMI5, 1, 4, __base_class_type_info::__public_mask);
+  
+  // VMI6 has diamond shaped inheritance.
+  CHECK_VTABLE(VMI6, vmi_class);
+  CHECK(to<__vmi_class_type_info>(typeid(VMI6)).__flags == __vmi_class_type_info::__diamond_shaped_mask);
+  CHECK(to<__vmi_class_type_info>(typeid(VMI6)).__base_count == 2);
+  CHECK_BASE_INFO_TYPE(VMI6, 0, VMIBase1);
+  CHECK_BASE_INFO_OFFSET_FLAGS(VMI6, 0, -24, __base_class_type_info::__public_mask | __base_class_type_info::__virtual_mask);
+  CHECK_BASE_INFO_TYPE(VMI6, 1, VMIBase3);
+  CHECK_BASE_INFO_OFFSET_FLAGS(VMI6, 1, 0, __base_class_type_info::__public_mask);
+  
+  // VMI7 has both non-diamond and diamond shaped inheritance.
+  CHECK_VTABLE(VMI7, vmi_class);
+  CHECK(to<__vmi_class_type_info>(typeid(VMI7)).__flags == (__vmi_class_type_info::__non_diamond_repeat_mask | __vmi_class_type_info::__diamond_shaped_mask));
+  CHECK(to<__vmi_class_type_info>(typeid(VMI7)).__base_count == 3);
+  CHECK_BASE_INFO_TYPE(VMI7, 0, VMIBase1);
+  CHECK_BASE_INFO_OFFSET_FLAGS(VMI7, 0, 16, __base_class_type_info::__public_mask);
+  CHECK_BASE_INFO_TYPE(VMI7, 1, VMI5);
+  CHECK_BASE_INFO_OFFSET_FLAGS(VMI7, 1, 20, __base_class_type_info::__public_mask);
+  CHECK_BASE_INFO_TYPE(VMI7, 2, VMI6);
+  CHECK_BASE_INFO_OFFSET_FLAGS(VMI7, 2, 0, 0);
+  
+  // Pointers to incomplete classes.
+  CHECK_VTABLE(Incomplete *, pointer);
+  CHECK(to<__pbase_type_info>(typeid(Incomplete *)).__flags == __pbase_type_info::__incomplete_mask);
+  CHECK(to<__pbase_type_info>(typeid(Incomplete **)).__flags == __pbase_type_info::__incomplete_mask);
+  CHECK(to<__pbase_type_info>(typeid(Incomplete ***)).__flags == __pbase_type_info::__incomplete_mask);
+
+  // Member pointers.
+  CHECK_VTABLE(int Incomplete::*, pointer_to_member);
+  CHECK(to<__pbase_type_info>(typeid(int Incomplete::*)).__flags == __pbase_type_info::__incomplete_class_mask);
+  CHECK(to<__pbase_type_info>(typeid(Incomplete Incomplete::*)).__flags == (__pbase_type_info::__incomplete_class_mask | __pbase_type_info::__incomplete_mask));
+  CHECK(to<__pbase_type_info>(typeid(Incomplete A::*)).__flags == (__pbase_type_info::__incomplete_mask));
+
+  // Check that when stripping qualifiers off the pointee type, we correctly handle arrays.
+  CHECK(to<__pbase_type_info>(typeid(B::a)).__flags == (__pbase_type_info::__const_mask | __pbase_type_info::__volatile_mask));
+  CHECK(to<__pbase_type_info>(typeid(B::a)).__pointee == to<__pbase_type_info>(typeid(B::b)).__pointee);
+  CHECK(to<__pbase_type_info>(typeid(B::c)).__flags == (__pbase_type_info::__const_mask | __pbase_type_info::__volatile_mask));
+  CHECK(to<__pbase_type_info>(typeid(B::c)).__pointee == to<__pbase_type_info>(typeid(B::d)).__pointee);
+
+  // Success!
+  // CHECK: ret i32 0
+  return 0;
+}
+
+#ifdef HARNESS
+extern "C" void printf(const char *, ...);
+
+int main() {
+  int result = f();
+  
+  if (result == 0)
+    printf("success!\n");
+  else
+    printf("test on line %d failed!\n", result);
+
+  return result;
+}
+#endif
+
+