1 | // RUN: %clang_cc1 %s -triple=arm64-apple-ios -emit-llvm -o - | FileCheck %s |
2 | // RUN: %clang_cc1 %s -triple=arm64-apple-ios -emit-llvm -o - | FileCheck -check-prefix=CHECK-GLOBALS %s |
3 | |
4 | // __cxa_guard_acquire argument is 64-bit |
5 | // rdar://11540122 |
6 | struct A { |
7 | A(); |
8 | }; |
9 | |
10 | void f() { |
11 | // CHECK: call i32 @__cxa_guard_acquire(i64* |
12 | static A a; |
13 | } |
14 | |
15 | // ARM64 uses the C++11 definition of POD. |
16 | // rdar://12650514 |
17 | namespace test1 { |
18 | // This class is POD in C++11 and cannot have objects allocated in |
19 | // its tail-padding. |
20 | struct ABase {}; |
21 | struct A : ABase { |
22 | int x; |
23 | char c; |
24 | }; |
25 | |
26 | struct B : A { |
27 | char d; |
28 | }; |
29 | |
30 | int test() { |
31 | return sizeof(B); |
32 | } |
33 | // CHECK: define i32 @_ZN5test14testEv() |
34 | // CHECK: ret i32 12 |
35 | } |
36 | |
37 | namespace std { |
38 | class type_info; |
39 | } |
40 | |
41 | // ARM64 uses string comparisons for what would otherwise be |
42 | // default-visibility weak RTTI. rdar://12650568 |
43 | namespace test2 { |
44 | struct A { |
45 | virtual void foo(); |
46 | }; |
47 | void A::foo() {} |
48 | // CHECK-GLOBALS-DAG: @_ZTSN5test21AE = constant [11 x i8] |
49 | // CHECK-GLOBALS-DAG: @_ZTIN5test21AE = constant { {{.*}}, i8* getelementptr inbounds ([11 x i8], [11 x i8]* @_ZTSN5test21AE, i32 0, i32 0) } |
50 | |
51 | struct __attribute__((visibility("hidden"))) B {}; |
52 | const std::type_info &b0 = typeid(B); |
53 | // CHECK-GLOBALS-DAG: @_ZTSN5test21BE = linkonce_odr hidden constant |
54 | // CHECK-GLOBALS-DAG: @_ZTIN5test21BE = linkonce_odr hidden constant { {{.*}}, i8* getelementptr inbounds ([11 x i8], [11 x i8]* @_ZTSN5test21BE, i32 0, i32 0) } |
55 | |
56 | const std::type_info &b1 = typeid(B*); |
57 | // CHECK-GLOBALS-DAG: @_ZTSPN5test21BE = linkonce_odr hidden constant |
58 | // CHECK-GLOBALS-DAG: @_ZTIPN5test21BE = linkonce_odr hidden constant { {{.*}}, i8* getelementptr inbounds ([12 x i8], [12 x i8]* @_ZTSPN5test21BE, i32 0, i32 0), i32 0, i8* bitcast |
59 | |
60 | struct C {}; |
61 | const std::type_info &c0 = typeid(C); |
62 | // CHECK-GLOBALS-DAG: @_ZTSN5test21CE = linkonce_odr hidden constant |
63 | // CHECK-GLOBALS-DAG: @_ZTIN5test21CE = linkonce_odr hidden constant { {{.*}}, i8* inttoptr (i64 add (i64 ptrtoint ([11 x i8]* @_ZTSN5test21CE to i64), i64 -9223372036854775808) to i8*) } |
64 | |
65 | const std::type_info &c1 = typeid(C*); |
66 | // CHECK-GLOBALS-DAG: @_ZTSPN5test21CE = linkonce_odr hidden constant |
67 | // CHECK-GLOBALS-DAG: @_ZTIPN5test21CE = linkonce_odr hidden constant { {{.*}}, i8* inttoptr (i64 add (i64 ptrtoint ([12 x i8]* @_ZTSPN5test21CE to i64), i64 -9223372036854775808) to i8*), i32 0, i8* bitcast |
68 | |
69 | // This class is explicitly-instantiated, but that instantiation |
70 | // doesn't guarantee to emit RTTI, so we can still demote the visibility. |
71 | template <class T> class D {}; |
72 | template class D<int>; |
73 | const std::type_info &d0 = typeid(D<int>); |
74 | // CHECK-GLOBALS-DAG: @_ZTSN5test21DIiEE = linkonce_odr hidden constant |
75 | // CHECK-GLOBALS-DAG: @_ZTIN5test21DIiEE = linkonce_odr hidden constant { {{.*}}, i8* inttoptr (i64 add (i64 ptrtoint ([14 x i8]* @_ZTSN5test21DIiEE to i64), i64 -9223372036854775808) to i8*) } |
76 | |
77 | // This class is explicitly-instantiated and *does* guarantee to |
78 | // emit RTTI, so we're stuck with having to use default visibility. |
79 | template <class T> class E { |
80 | virtual void foo() {} |
81 | }; |
82 | template class E<int>; |
83 | // CHECK-GLOBALS-DAG: @_ZTSN5test21EIiEE = weak_odr constant [14 x i8] |
84 | // CHECK-GLOBALS-DAG: @_ZTIN5test21EIiEE = weak_odr constant { {{.*}}, i8* inttoptr (i64 add (i64 ptrtoint ([14 x i8]* @_ZTSN5test21EIiEE to i64), i64 -9223372036854775808) to i8*) } |
85 | |
86 | } |
87 | |
88 | // ARM64 reserves the top half of the vtable offset in virtual |
89 | // member pointers. |
90 | namespace test3 { |
91 | struct A { |
92 | virtual void foo(); |
93 | virtual void bar(); |
94 | }; |
95 | |
96 | // The offset half of the pointer is still initialized to zero. |
97 | // CHECK-GLOBALS-DAG: @_ZN5test34mptrE = global { i64, i64 } { i64 0, i64 1 } |
98 | void (A::*mptr)() = &A::foo; |
99 | |
100 | // CHECK-LABEL: define void @_ZN5test34testEv() |
101 | // CHECK: [[TEMP:%.*]] = alloca [[A:.*]], align 8 |
102 | // CHECK: [[MEMPTR:%.*]] = load { i64, i64 }, { i64, i64 }* @_ZN5test34mptrE, align 8 |
103 | // CHECK: [[ADJUST_AND_IS_VIRTUAL:%.*]] = extractvalue { i64, i64 } [[MEMPTR]], 1 |
104 | // CHECK: [[ADJUST:%.*]] = ashr i64 [[ADJUST_AND_IS_VIRTUAL]], 1 |
105 | // CHECK: [[T0:%.*]] = bitcast [[A]]* [[TEMP]] to i8* |
106 | // CHECK: [[T1:%.*]] = getelementptr inbounds i8, i8* [[T0]], i64 [[ADJUST]] |
107 | // CHECK: [[ADJUSTED:%.*]] = bitcast i8* [[T1]] to [[A]]* |
108 | // CHECK: [[MEMBER:%.*]] = extractvalue { i64, i64 } [[MEMPTR]], 0 |
109 | // CHECK: [[T0:%.*]] = and i64 [[ADJUST_AND_IS_VIRTUAL]], 1 |
110 | // CHECK: [[IS_VIRTUAL:%.*]] = icmp ne i64 [[T0]], 0 |
111 | // CHECK: br i1 [[IS_VIRTUAL]], |
112 | // CHECK: [[T0:%.*]] = bitcast [[A]]* [[ADJUSTED]] to i8** |
113 | // CHECK: [[VPTR:%.*]] = load i8*, i8** [[T0]], align 8 |
114 | // CHECK: [[TRUNC:%.*]] = trunc i64 [[MEMBER]] to i32 |
115 | // CHECK: [[ZEXT:%.*]] = zext i32 [[TRUNC]] to i64 |
116 | // CHECK: [[T0:%.*]] = getelementptr i8, i8* [[VPTR]], i64 [[ZEXT]] |
117 | // CHECK: [[T1:%.*]] = bitcast i8* [[T0]] to void ([[A]]*)** |
118 | // CHECK: load void ([[A]]*)*, void ([[A]]*)** [[T1]], |
119 | void test() { |
120 | (A().*mptr)(); |
121 | } |
122 | } |
123 | |