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 - -triple=i386-pc-linux -fms-extensions | FileCheck %s
3// 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
4
5#ifdef DEFINE_GUID
6struct _GUID {
7#ifdef WRONG_GUID
8    unsigned int SomethingWentWrong;
9#else
10    unsigned long  Data1;
11    unsigned short Data2;
12    unsigned short Data3;
13    unsigned char  Data4[8];
14#endif
15};
16#endif
17typedef struct _GUID GUID;
18
19struct __declspec(uuid("12345678-1234-1234-1234-1234567890aB")) S1 { } s1;
20struct __declspec(uuid("87654321-4321-4321-4321-ba0987654321")) S2 { };
21struct __declspec(uuid("{12345678-1234-1234-1234-1234567890ac}")) Curly;
22struct __declspec(uuid("{12345678-1234-1234-1234-1234567890ac}")) Curly;
23
24#ifdef DEFINE_GUID
25// Make sure we can properly generate code when the UUID has curly braces on it.
26GUID thing = __uuidof(Curly);
27// CHECK-DEFINE-GUID: @thing = global %struct._GUID zeroinitializer, align 4
28// CHECK-DEFINE-WRONG-GUID: @thing = global %struct._GUID zeroinitializer, align 4
29
30// This gets initialized in a static initializer.
31// CHECK-DEFINE-GUID: @g = global %struct._GUID zeroinitializer, align 4
32// CHECK-DEFINE-WRONG-GUID: @g = global %struct._GUID zeroinitializer, align 4
33GUID g = __uuidof(S1);
34#endif
35
36// First global use of __uuidof(S1) forces the creation of the global.
37// 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
38// CHECK: @gr = constant %struct._GUID* bitcast ({ i32, i16, i16, [8 x i8] }* @_GUID_12345678_1234_1234_1234_1234567890ab to %struct._GUID*), align 4
39const GUID& gr = __uuidof(S1);
40
41// CHECK: @gp = global %struct._GUID* bitcast ({ i32, i16, i16, [8 x i8] }* @_GUID_12345678_1234_1234_1234_1234567890ab to %struct._GUID*), align 4
42const GUID* gp = &__uuidof(S1);
43
44// CHECK: @cp = global %struct._GUID* bitcast ({ i32, i16, i16, [8 x i8] }* @_GUID_12345678_1234_1234_1234_1234567890ac to %struct._GUID*), align 4
45const GUID* cp = &__uuidof(Curly);
46
47// Special case: _uuidof(0)
48// CHECK: @zeroiid = constant %struct._GUID* bitcast ({ i32, i16, i16, [8 x i8] }* @_GUID_00000000_0000_0000_0000_000000000000 to %struct._GUID*), align 4
49const GUID& zeroiid = __uuidof(0);
50
51// __uuidof(S2) hasn't been used globally yet, so it's emitted when it's used
52// in a function and is emitted at the end of the globals section.
53// 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
54
55// The static initializer for thing.
56// CHECK-DEFINE-GUID: call void @llvm.memcpy.p0i8.p0i8.i32(i8* bitcast (%struct._GUID* @thing to i8*), i8* bitcast ({ i32, i16, i16, [8 x i8] }* @_GUID_12345678_1234_1234_1234_1234567890ac to i8*), i32 16, i32 4, i1 false)
57// CHECK-DEFINE-WRONG-GUID: call void @llvm.memcpy.p0i8.p0i8.i32(i8* bitcast (%struct._GUID* @thing to i8*), i8* bitcast ({ i32, i16, i16, [8 x i8] }* @_GUID_12345678_1234_1234_1234_1234567890ac to i8*), i32 4, i32 4, i1 false)
58
59// The static initializer for g.
60// CHECK-DEFINE-GUID: call void @llvm.memcpy.p0i8.p0i8.i32(i8* bitcast (%struct._GUID* @g to i8*), i8* bitcast ({ i32, i16, i16, [8 x i8] }* @_GUID_12345678_1234_1234_1234_1234567890ab to i8*), i32 16, i32 4, i1 false)
61// CHECK-DEFINE-WRONG-GUID: call void @llvm.memcpy.p0i8.p0i8.i32(i8* bitcast (%struct._GUID* @g to i8*), i8* bitcast ({ i32, i16, i16, [8 x i8] }* @_GUID_12345678_1234_1234_1234_1234567890ab to i8*), i32 4, i32 4, i1 false)
62
63#ifdef DEFINE_GUID
64void fun() {
65  // CHECK-DEFINE-GUID: %s1_1 = alloca %struct._GUID, align 4
66  // CHECK-DEFINE-WRONG-GUID: %s1_1 = alloca %struct._GUID, align 4
67  // CHECK-DEFINE-GUID: %s1_2 = alloca %struct._GUID, align 4
68  // CHECK-DEFINE-WRONG-GUID: %s1_2 = alloca %struct._GUID, align 4
69  // CHECK-DEFINE-GUID: %s1_3 = alloca %struct._GUID, align 4
70  // CHECK-DEFINE-WRONG-GUID: %s1_3 = alloca %struct._GUID, align 4
71
72  // CHECK-DEFINE-GUID: [[U1:%.+]] = bitcast %struct._GUID* %s1_1 to i8*
73  // CHECK-DEFINE-WRONG-GUID: [[U1:%.+]] = bitcast %struct._GUID* %s1_1 to i8*
74  // CHECK-DEFINE-GUID: call void @llvm.memcpy.p0i8.p0i8.i32(i8* [[U1]], i8* bitcast ({ i32, i16, i16, [8 x i8] }* @_GUID_12345678_1234_1234_1234_1234567890ab to i8*), i32 16, i32 4, i1 false)
75  // CHECK-DEFINE-WRONG-GUID: call void @llvm.memcpy.p0i8.p0i8.i32(i8* [[U1]], i8* bitcast ({ i32, i16, i16, [8 x i8] }* @_GUID_12345678_1234_1234_1234_1234567890ab to i8*), i32 4, i32 4, i1 false)
76  GUID s1_1 = __uuidof(S1);
77
78  // CHECK-DEFINE-GUID: [[U2:%.+]] = bitcast %struct._GUID* %s1_2 to i8*
79  // CHECK-DEFINE-WRONG-GUID: [[U2:%.+]] = bitcast %struct._GUID* %s1_2 to i8*
80  // CHECK-DEFINE-GUID: call void @llvm.memcpy.p0i8.p0i8.i32(i8* [[U2]], i8* bitcast ({ i32, i16, i16, [8 x i8] }* @_GUID_12345678_1234_1234_1234_1234567890ab to i8*), i32 16, i32 4, i1 false)
81  // CHECK-DEFINE-WRONG-GUID: call void @llvm.memcpy.p0i8.p0i8.i32(i8* [[U2]], i8* bitcast ({ i32, i16, i16, [8 x i8] }* @_GUID_12345678_1234_1234_1234_1234567890ab to i8*), i32 4, i32 4, i1 false)
82  GUID s1_2 = __uuidof(S1);
83
84  // CHECK-DEFINE-GUID: [[U3:%.+]] = bitcast %struct._GUID* %s1_3 to i8*
85  // CHECK-DEFINE-WRONG-GUID: [[U3:%.+]] = bitcast %struct._GUID* %s1_3 to i8*
86  // CHECK-DEFINE-GUID: call void @llvm.memcpy.p0i8.p0i8.i32(i8* [[U3]], i8* bitcast ({ i32, i16, i16, [8 x i8] }* @_GUID_12345678_1234_1234_1234_1234567890ab to i8*), i32 16, i32 4, i1 false)
87  // CHECK-DEFINE-WRONG-GUID: call void @llvm.memcpy.p0i8.p0i8.i32(i8* [[U3]], i8* bitcast ({ i32, i16, i16, [8 x i8] }* @_GUID_12345678_1234_1234_1234_1234567890ab to i8*), i32 4, i32 4, i1 false)
88  GUID s1_3 = __uuidof(s1);
89}
90#endif
91
92void gun() {
93#ifdef DEFINE_GUID
94  // CHECK-DEFINE-GUID: %s2_1 = alloca %struct._GUID, align 4
95  // CHECK-DEFINE-WRONG-GUID: %s2_1 = alloca %struct._GUID, align 4
96  // CHECK-DEFINE-GUID: %s2_2 = alloca %struct._GUID, align 4
97  // CHECK-DEFINE-WRONG-GUID: %s2_2 = alloca %struct._GUID, align 4
98  GUID s2_1 = __uuidof(S2);
99  GUID s2_2 = __uuidof(S2);
100#endif
101  // CHECK: %r = alloca %struct._GUID*, align 4
102  // CHECK: %p = alloca %struct._GUID*, align 4
103  // CHECK: %zeroiid = alloca %struct._GUID*, align 4
104
105  // 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
106  const GUID& r = __uuidof(S2);
107  // 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
108  const GUID* p = &__uuidof(S2);
109
110  // Special case _uuidof(0), local scope version.
111  // 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
112  const GUID& zeroiid = __uuidof(0);
113}
114