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
6 struct _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
17 typedef struct _GUID GUID;
18
19 struct __declspec(uuid("12345678-1234-1234-1234-1234567890aB")) S1 { } s1;
20 struct __declspec(uuid("87654321-4321-4321-4321-ba0987654321")) S2 { };
21 struct __declspec(uuid("{12345678-1234-1234-1234-1234567890ac}")) Curly;
22 struct __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.
26 GUID 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
33 GUID 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
39 const 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
42 const 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
45 const 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
49 const 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
fun()64 void 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
gun()92 void 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