1 // RUN: %clang_cc1 -emit-llvm %s -o - -DDEFINE_GUID -triple=i386-pc-linux -fms-extensions | FileCheck %s --check-prefix=CHECK-DEFINE-GUID
2 // RUN: %clang_cc1 -emit-llvm %s -o - -DDEFINE_GUID -DBRACKET_ATTRIB -triple=i386-pc-linux -fms-extensions | FileCheck %s --check-prefix=CHECK-DEFINE-GUID
3 // RUN: %clang_cc1 -emit-llvm %s -o - -triple=i386-pc-linux -fms-extensions | FileCheck %s
4 // RUN: %clang_cc1 -emit-llvm %s -o - -triple=x86_64-pc-linux -fms-extensions | FileCheck %s --check-prefix=CHECK-64
5 // RUN: %clang_cc1 -emit-llvm %s -o - -DDEFINE_GUID -DWRONG_GUID -triple=i386-pc-linux -fms-extensions | FileCheck %s --check-prefix=CHECK-DEFINE-WRONG-GUID
6
7 #ifdef DEFINE_GUID
8 struct _GUID {
9 #ifdef WRONG_GUID
10 unsigned int SomethingWentWrong;
11 #else
12 unsigned long Data1;
13 unsigned short Data2;
14 unsigned short Data3;
15 unsigned char Data4[8];
16 #endif
17 };
18 #endif
19 typedef struct _GUID GUID;
20
21 #ifdef BRACKET_ATTRIB
22 [uuid(12345678-1234-1234-1234-1234567890aB)] struct S1 { } s1;
23 [uuid(87654321-4321-4321-4321-ba0987654321)] struct S2 { };
24 [uuid({12345678-1234-1234-1234-1234567890ac})] struct Curly;
25 [uuid({12345678-1234-1234-1234-1234567890ac})] struct Curly;
26 #else
27 struct __declspec(uuid("12345678-1234-1234-1234-1234567890aB")) S1 { } s1;
28 struct __declspec(uuid("87654321-4321-4321-4321-ba0987654321")) S2 { };
29 struct __declspec(uuid("{12345678-1234-1234-1234-1234567890ac}")) Curly;
30 struct __declspec(uuid("{12345678-1234-1234-1234-1234567890ac}")) Curly;
31 #endif
32
33 void side_effect();
34
35 #ifdef DEFINE_GUID
36 // Make sure we can properly generate code when the UUID has curly braces on it.
37 GUID thing = (side_effect(), __uuidof(Curly));
38 // CHECK-DEFINE-GUID: @thing ={{.*}} global %struct._GUID zeroinitializer, align 4
39 // CHECK-DEFINE-WRONG-GUID: @thing ={{.*}} global %struct._GUID zeroinitializer, align 4
40
41 // This gets initialized in a static initializer.
42 // CHECK-DEFINE-GUID: @g ={{.*}} global %struct._GUID zeroinitializer, align 4
43 // CHECK-DEFINE-WRONG-GUID: @g ={{.*}} global %struct._GUID zeroinitializer, align 4
44 GUID g = (side_effect(), __uuidof(S1));
45
46 // CHECK-DEFINE-GUID: @const_init ={{.*}} global %struct._GUID { i32 305419896, i16 4660, i16 4660, [8 x i8] c"\124\124Vx\90\AC" }
47 // CHECK-DEFINE-WRONG-GUID: @const_init ={{.*}} global %struct._GUID zeroinitializer
48 GUID const_init = __uuidof(Curly);
49 #endif
50
51 // First global use of __uuidof(S1) forces the creation of the global.
52 // CHECK: @_GUID_12345678_1234_1234_1234_1234567890ab = linkonce_odr constant { i32, i16, i16, [8 x i8] } { i32 305419896, i16 4660, i16 4660, [8 x i8] c"\124\124Vx\90\AB" }, comdat
53 // CHECK: @gr ={{.*}} constant %struct._GUID* bitcast ({ i32, i16, i16, [8 x i8] }* @_GUID_12345678_1234_1234_1234_1234567890ab to %struct._GUID*), align 4
54 // CHECK-64: @gr ={{.*}} constant %struct._GUID* bitcast ({ i32, i16, i16, [8 x i8] }* @_GUID_12345678_1234_1234_1234_1234567890ab to %struct._GUID*), align 8
55 const GUID& gr = __uuidof(S1);
56
57 // CHECK: @gp ={{.*}} global %struct._GUID* bitcast ({ i32, i16, i16, [8 x i8] }* @_GUID_12345678_1234_1234_1234_1234567890ab to %struct._GUID*), align 4
58 const GUID* gp = &__uuidof(S1);
59
60 // CHECK: @cp ={{.*}} global %struct._GUID* bitcast ({ i32, i16, i16, [8 x i8] }* @_GUID_12345678_1234_1234_1234_1234567890ac to %struct._GUID*), align 4
61 const GUID* cp = &__uuidof(Curly);
62
63 // Special case: _uuidof(0)
64 // CHECK: @zeroiid ={{.*}} constant %struct._GUID* bitcast ({ i32, i16, i16, [8 x i8] }* @_GUID_00000000_0000_0000_0000_000000000000 to %struct._GUID*), align 4
65 const GUID& zeroiid = __uuidof(0);
66
67 // __uuidof(S2) hasn't been used globally yet, so it's emitted when it's used
68 // in a function and is emitted at the end of the globals section.
69 // CHECK: @_GUID_87654321_4321_4321_4321_ba0987654321 = linkonce_odr constant { i32, i16, i16, [8 x i8] } { i32 -2023406815, i16 17185, i16 17185, [8 x i8] c"C!\BA\09\87eC!" }, comdat
70
71 // The static initializer for thing.
72 // CHECK-DEFINE-GUID: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 4 bitcast (%struct._GUID* @thing to i8*), i8* align 4 bitcast (%struct._GUID* @_GUID_12345678_1234_1234_1234_1234567890ac to i8*), i32 16, i1 false)
73 // CHECK-DEFINE-WRONG-GUID: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 4 bitcast (%struct._GUID* @thing to i8*), i8* align 4 bitcast ({ i32, i16, i16, [8 x i8] }* @_GUID_12345678_1234_1234_1234_1234567890ac to i8*), i32 4, i1 false)
74
75 // The static initializer for g.
76 // CHECK-DEFINE-GUID: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 4 bitcast (%struct._GUID* @g to i8*), i8* align 4 bitcast (%struct._GUID* @_GUID_12345678_1234_1234_1234_1234567890ab to i8*), i32 16, i1 false)
77 // CHECK-DEFINE-WRONG-GUID: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 4 bitcast (%struct._GUID* @g to i8*), i8* align 4 bitcast ({ i32, i16, i16, [8 x i8] }* @_GUID_12345678_1234_1234_1234_1234567890ab to i8*), i32 4, i1 false)
78
79 // We don't constant-initialize const_init if the definition of _GUID is dodgy.
80 // CHECK-DEFINE-GUID-NOT: @const_init
81 // CHECK-DEFINE-WRONG-GUID: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 4 bitcast (%struct._GUID* @const_init to i8*), i8* align 4 bitcast ({ i32, i16, i16, [8 x i8] }* @_GUID_12345678_1234_1234_1234_1234567890ac to i8*), i32 4, i1 false)
82
83 #ifdef DEFINE_GUID
fun()84 void fun() {
85 // CHECK-DEFINE-GUID: %s1_1 = alloca %struct._GUID, align 4
86 // CHECK-DEFINE-WRONG-GUID: %s1_1 = alloca %struct._GUID, align 4
87 // CHECK-DEFINE-GUID: %s1_2 = alloca %struct._GUID, align 4
88 // CHECK-DEFINE-WRONG-GUID: %s1_2 = alloca %struct._GUID, align 4
89 // CHECK-DEFINE-GUID: %s1_3 = alloca %struct._GUID, align 4
90 // CHECK-DEFINE-WRONG-GUID: %s1_3 = alloca %struct._GUID, align 4
91
92 // CHECK-DEFINE-GUID: [[U1:%.+]] = bitcast %struct._GUID* %s1_1 to i8*
93 // CHECK-DEFINE-WRONG-GUID: [[U1:%.+]] = bitcast %struct._GUID* %s1_1 to i8*
94 // CHECK-DEFINE-GUID: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 4 [[U1]], i8* align 4 bitcast (%struct._GUID* @_GUID_12345678_1234_1234_1234_1234567890ab to i8*), i32 16, i1 false)
95 // CHECK-DEFINE-WRONG-GUID: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 4 [[U1]], i8* align 4 bitcast ({ i32, i16, i16, [8 x i8] }* @_GUID_12345678_1234_1234_1234_1234567890ab to i8*), i32 4, i1 false)
96 GUID s1_1 = (side_effect(), __uuidof(S1));
97
98 // CHECK-DEFINE-GUID: [[U2:%.+]] = bitcast %struct._GUID* %s1_2 to i8*
99 // CHECK-DEFINE-WRONG-GUID: [[U2:%.+]] = bitcast %struct._GUID* %s1_2 to i8*
100 // CHECK-DEFINE-GUID: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 4 [[U2]], i8* align 4 bitcast (%struct._GUID* @_GUID_12345678_1234_1234_1234_1234567890ab to i8*), i32 16, i1 false)
101 // CHECK-DEFINE-WRONG-GUID: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 4 [[U2]], i8* align 4 bitcast ({ i32, i16, i16, [8 x i8] }* @_GUID_12345678_1234_1234_1234_1234567890ab to i8*), i32 4, i1 false)
102 GUID s1_2 = (side_effect(), __uuidof(S1));
103
104 // CHECK-DEFINE-GUID: [[U3:%.+]] = bitcast %struct._GUID* %s1_3 to i8*
105 // CHECK-DEFINE-WRONG-GUID: [[U3:%.+]] = bitcast %struct._GUID* %s1_3 to i8*
106 // CHECK-DEFINE-GUID: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 4 [[U3]], i8* align 4 bitcast (%struct._GUID* @_GUID_12345678_1234_1234_1234_1234567890ab to i8*), i32 16, i1 false)
107 // CHECK-DEFINE-WRONG-GUID: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 4 [[U3]], i8* align 4 bitcast ({ i32, i16, i16, [8 x i8] }* @_GUID_12345678_1234_1234_1234_1234567890ab to i8*), i32 4, i1 false)
108 GUID s1_3 = (side_effect(), __uuidof(s1));
109 }
110 #endif
111
gun()112 void gun() {
113 #ifdef DEFINE_GUID
114 // CHECK-DEFINE-GUID: %s2_1 = alloca %struct._GUID, align 4
115 // CHECK-DEFINE-WRONG-GUID: %s2_1 = alloca %struct._GUID, align 4
116 // CHECK-DEFINE-GUID: %s2_2 = alloca %struct._GUID, align 4
117 // CHECK-DEFINE-WRONG-GUID: %s2_2 = alloca %struct._GUID, align 4
118 GUID s2_1 = __uuidof(S2);
119 GUID s2_2 = __uuidof(S2);
120 #endif
121 // CHECK: %r = alloca %struct._GUID*, align 4
122 // CHECK: %p = alloca %struct._GUID*, align 4
123 // CHECK: %zeroiid = alloca %struct._GUID*, align 4
124
125 // CHECK: store %struct._GUID* bitcast ({ i32, i16, i16, [8 x i8] }* @_GUID_87654321_4321_4321_4321_ba0987654321 to %struct._GUID*), %struct._GUID** %r, align 4
126 const GUID& r = __uuidof(S2);
127 // CHECK: store %struct._GUID* bitcast ({ i32, i16, i16, [8 x i8] }* @_GUID_87654321_4321_4321_4321_ba0987654321 to %struct._GUID*), %struct._GUID** %p, align 4
128 const GUID* p = &__uuidof(S2);
129
130 // Special case _uuidof(0), local scope version.
131 // CHECK: store %struct._GUID* bitcast ({ i32, i16, i16, [8 x i8] }* @_GUID_00000000_0000_0000_0000_000000000000 to %struct._GUID*), %struct._GUID** %zeroiid, align 4
132 const GUID& zeroiid = __uuidof(0);
133 }
134
135 namespace DeclRefExprNamingGUID {
f()136 template<const _GUID &g> const _GUID &f() { return g; }
137 struct __declspec(uuid("12345678-1234-1234-1234-123412341234")) S {};
138 auto &r = f<__uuidof(S)>();
139 }
140