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