1 // Check typeid() + type_info
2
3 // RUN: %clang_cc1 -no-opaque-pointers %s -triple=aarch64-unknown-fuchsia -O3 -S -o - -emit-llvm -fcxx-exceptions -fexceptions | FileCheck %s
4
5 // CHECK: %class.A = type { i32 (...)** }
6 // CHECK: %class.B = type { %class.A }
7 // CHECK: %"class.std::type_info" = type { i32 (...)**, i8* }
8
9 // CHECK: $_ZTI1A.rtti_proxy = comdat any
10 // CHECK: $_ZTI1B.rtti_proxy = comdat any
11
12 // CHECK: @_ZTVN10__cxxabiv117__class_type_infoE = external global i8*
13 // CHECK: @_ZTS1A ={{.*}} constant [3 x i8] c"1A\00", align 1
14 // CHECK: @_ZTI1A ={{.*}} constant { i8*, i8* } { i8* getelementptr inbounds (i8, i8* bitcast (i8** @_ZTVN10__cxxabiv117__class_type_infoE to i8*), i32 8), i8* getelementptr inbounds ([3 x i8], [3 x i8]* @_ZTS1A, i32 0, i32 0) }, align 8
15 // CHECK: @_ZTVN10__cxxabiv120__si_class_type_infoE = external global i8*
16 // CHECK: @_ZTS1B ={{.*}} constant [3 x i8] c"1B\00", align 1
17 // CHECK: @_ZTI1B ={{.*}} constant { i8*, i8*, i8* } { i8* getelementptr inbounds (i8, i8* bitcast (i8** @_ZTVN10__cxxabiv120__si_class_type_infoE to i8*), i32 8), i8* getelementptr inbounds ([3 x i8], [3 x i8]* @_ZTS1B, i32 0, i32 0), i8* bitcast ({ i8*, i8* }* @_ZTI1A to i8*) }, align 8
18 // CHECK: @_ZTI1A.rtti_proxy = hidden unnamed_addr constant { i8*, i8* }* @_ZTI1A, comdat
19 // CHECK: @_ZTI1B.rtti_proxy = hidden unnamed_addr constant { i8*, i8*, i8* }* @_ZTI1B, comdat
20
21 // CHECK: define {{.*}}%"class.std::type_info"* @_Z11getTypeInfov() local_unnamed_addr
22 // CHECK-NEXT: entry:
23 // CHECK-NEXT: ret %"class.std::type_info"* bitcast ({ i8*, i8* }* @_ZTI1A to %"class.std::type_info"*)
24 // CHECK-NEXT: }
25
26 // CHECK: define{{.*}} i8* @_Z7getNamev() local_unnamed_addr
27 // CHECK-NEXT: entry:
28 // CHECK-NEXT: ret i8* getelementptr inbounds ([3 x i8], [3 x i8]* @_ZTS1A, i64 0, i64 0)
29 // CHECK-NEXT: }
30
31 // CHECK: define{{.*}} i1 @_Z5equalP1A(%class.A* noundef readonly %a) local_unnamed_addr
32 // CHECK-NEXT: entry:
33 // CHECK-NEXT: [[isnull:%[0-9]+]] = icmp eq %class.A* %a, null
34 // CHECK-NEXT: br i1 [[isnull]], label %[[bad_typeid:[a-z0-9._]+]], label %[[end:[a-z0-9.+]+]]
35 // CHECK: [[bad_typeid]]:
36 // CHECK-NEXT: tail call void @__cxa_bad_typeid()
37 // CHECK-NEXT: unreachable
38 // CHECK: [[end]]:
39 // CHECK-NEXT: [[type_info_ptr3:%[0-9]+]] = bitcast %class.A* %a to i8**
40 // CHECK-NEXT: [[vtable:%[a-z0-9]+]] = load i8*, i8** [[type_info_ptr3]]
41 // CHECK-NEXT: [[type_info_ptr:%[0-9]+]] = tail call i8* @llvm.load.relative.i32(i8* [[vtable]], i32 -4)
42 // CHECK-NEXT: [[type_info_ptr2:%[0-9]+]] = bitcast i8* [[type_info_ptr]] to %"class.std::type_info"**
43 // CHECK-NEXT: [[type_info_ptr:%[0-9]+]] = load %"class.std::type_info"*, %"class.std::type_info"** [[type_info_ptr2]], align 8
44 // CHECK-NEXT: [[name_ptr:%[a-z0-9._]+]] = getelementptr inbounds %"class.std::type_info", %"class.std::type_info"* [[type_info_ptr]], i64 0, i32 1
45 // CHECK-NEXT: [[name:%[0-9]+]] = load i8*, i8** [[name_ptr]], align 8
46 // CHECK-NEXT: [[eq:%[a-z0-9.]+]] = icmp eq i8* [[name]], getelementptr inbounds ([3 x i8], [3 x i8]* @_ZTS1B, i64 0, i64 0)
47 // CHECK-NEXT: ret i1 [[eq]]
48 // CHECK-NEXT: }
49
50 #include "../typeinfo"
51
52 class A {
53 public:
54 virtual void foo();
55 };
56
57 class B : public A {
58 public:
59 void foo() override;
60 };
61
foo()62 void A::foo() {}
foo()63 void B::foo() {}
64
getTypeInfo()65 const auto &getTypeInfo() {
66 return typeid(A);
67 }
68
getName()69 const char *getName() {
70 return typeid(A).name();
71 }
72
equal(A * a)73 bool equal(A *a) {
74 return typeid(B) == typeid(*a);
75 }
76