1 // RUN: rm -rf %t
2 // Test that only forward declarations are emitted for types dfined in modules.
3 
4 // Modules:
5 // RUN: %clang_cc1 -x objective-c++ -std=c++11 -debug-info-kind=standalone \
6 // RUN:     -dwarf-ext-refs -fmodules                                   \
7 // RUN:     -fmodule-format=obj -fimplicit-module-maps -DMODULES \
8 // RUN:     -triple %itanium_abi_triple \
9 // RUN:     -fmodules-cache-path=%t %s -I %S/Inputs -I %t -emit-llvm -o %t-mod.ll
10 // RUN: cat %t-mod.ll |  FileCheck %s
11 
12 // PCH:
13 // RUN: %clang_cc1 -x c++ -std=c++11 -fmodule-format=obj -emit-pch -I%S/Inputs \
14 // RUN:     -triple %itanium_abi_triple \
15 // RUN:     -o %t.pch %S/Inputs/DebugCXX.h
16 // RUN: %clang_cc1 -std=c++11 -debug-info-kind=standalone \
17 // RUN:     -dwarf-ext-refs -fmodule-format=obj \
18 // RUN:     -triple %itanium_abi_triple \
19 // RUN:     -include-pch %t.pch %s -emit-llvm -o %t-pch.ll %s
20 // RUN: cat %t-pch.ll |  FileCheck %s
21 // RUN: cat %t-pch.ll |  FileCheck %s --check-prefix=CHECK-PCH
22 
23 #ifdef MODULES
24 @import DebugCXX;
25 #endif
26 
27 using DebugCXX::Struct;
28 
29 Struct s;
30 DebugCXX::Enum e;
31 DebugCXX::Template<long> implicitTemplate;
32 DebugCXX::Template<int> explicitTemplate;
33 DebugCXX::FloatInstantiation typedefTemplate;
34 DebugCXX::B anchoredTemplate;
35 
36 int Struct::static_member = -1;
37 enum {
38   e3 = -1
39 } conflicting_uid = e3;
40 auto anon_enum = DebugCXX::e2;
41 char _anchor = anon_enum + conflicting_uid;
42 
43 TypedefUnion tdu;
44 TypedefEnum tde;
45 TypedefStruct tds;
46 TypedefTemplate tdt;
47 Template1<int> explicitTemplate1;
48 
49 template <class T> class FwdDeclTemplate { T t; };
50 TypedefFwdDeclTemplate tdfdt;
51 
52 InAnonymousNamespace anon;
53 
54 void foo() {
55   anon.i = GlobalStruct.i = GlobalUnion.i = GlobalEnum;
56 }
57 
58 
59 // CHECK: ![[STRUCT:.*]] = !DICompositeType(tag: DW_TAG_structure_type, name: "Struct",
60 // CHECK-SAME:             scope: ![[NS:[0-9]+]],
61 // CHECK-SAME:             flags: DIFlagFwdDecl,
62 // CHECK-SAME:             identifier: "_ZTSN8DebugCXX6StructE")
63 
64 // CHECK: ![[NS]] = !DINamespace(name: "DebugCXX", scope: ![[MOD:[0-9]+]],
65 // CHECK: ![[MOD]] = !DIModule(scope: null, name: {{.*}}DebugCXX
66 
67 // CHECK: !DICompositeType(tag: DW_TAG_enumeration_type, name: "Enum",
68 // CHECK-SAME:             scope: ![[NS]],
69 // CHECK-SAME:             flags: DIFlagFwdDecl,
70 // CHECK-SAME:             identifier:  "_ZTSN8DebugCXX4EnumE")
71 
72 // This type is anchored in the module by an explicit template instantiation.
73 // CHECK: !DICompositeType(tag: DW_TAG_class_type,
74 // CHECK-SAME:             name: "Template<long, DebugCXX::traits<long> >",
75 // CHECK-SAME:             scope: ![[NS]],
76 // CHECK-SAME:             flags: DIFlagFwdDecl,
77 // CHECK-SAME:             identifier: "_ZTSN8DebugCXX8TemplateIlNS_6traitsIlEEEE")
78 
79 // This type is anchored in the module by an explicit template instantiation.
80 // CHECK: !DICompositeType(tag: DW_TAG_class_type,
81 // CHECK-SAME:             name: "Template<int, DebugCXX::traits<int> >",
82 // CHECK-SAME:             scope: ![[NS]],
83 // CHECK-SAME:             flags: DIFlagFwdDecl,
84 // CHECK-SAME:             identifier: "_ZTSN8DebugCXX8TemplateIiNS_6traitsIiEEEE")
85 
86 // This type isn't, however, even with standalone non-module debug info this
87 // type is a forward declaration.
88 // CHECK-NOT: !DICompositeType(tag: DW_TAG_structure_type, name: "traits<int>",
89 
90 // This one isn't.
91 // CHECK: !DICompositeType(tag: DW_TAG_class_type,
92 // CHECK-SAME:             name: "Template<float, DebugCXX::traits<float> >",
93 // CHECK-SAME:             scope: ![[NS]],
94 // CHECK-SAME:             templateParams:
95 // CHECK-SAME:             identifier: "_ZTSN8DebugCXX8TemplateIfNS_6traitsIfEEEE")
96 
97 // This type is anchored in the module by an explicit template instantiation.
98 // CHECK: !DICompositeType(tag: DW_TAG_structure_type, name: "traits<float>",
99 // CHECK-SAME:             flags: DIFlagFwdDecl,
100 // CHECK-SAME:             identifier: "_ZTSN8DebugCXX6traitsIfEE")
101 
102 
103 // This type is anchored in the module by an explicit template instantiation.
104 // CHECK: !DICompositeType(tag: DW_TAG_class_type, name: "A<void>",
105 // CHECK-SAME:             scope: ![[NS]],
106 // CHECK-SAME:             flags: DIFlagFwdDecl,
107 // CHECK-SAME:             identifier: "_ZTSN8DebugCXX1AIJvEEE")
108 
109 // CHECK: !DIDerivedType(tag: DW_TAG_member, name: "static_member",
110 // CHECK-SAME:           scope: ![[STRUCT]]
111 
112 // CHECK: !DICompositeType(tag: DW_TAG_union_type,
113 // CHECK-SAME:             flags: DIFlagFwdDecl,
114 // CHECK-SAME:             identifier: "_ZTS12TypedefUnion")
115 // CHECK: !DICompositeType(tag: DW_TAG_enumeration_type,
116 // CHECK-SAME:             flags: DIFlagFwdDecl,
117 // CHECK-SAME:             identifier: "_ZTS11TypedefEnum")
118 // CHECK: !DICompositeType(tag: DW_TAG_structure_type,
119 // CHECK-SAME:             flags: DIFlagFwdDecl,
120 // CHECK-SAME:             identifier: "_ZTS13TypedefStruct")
121 
122 // This one isn't.
123 // CHECK: !DICompositeType(tag: DW_TAG_class_type, name: "Template1<void *>",
124 // CHECK-SAME:             templateParams:
125 // CHECK-SAME:             identifier: "_ZTS9Template1IPvE")
126 
127 // This type is anchored in the module by an explicit template instantiation.
128 // CHECK: !DICompositeType(tag: DW_TAG_class_type, name: "Template1<int>",
129 // CHECK-SAME:             flags: DIFlagFwdDecl,
130 // CHECK-SAME:             identifier: "_ZTS9Template1IiE")
131 
132 // CHECK: !DICompositeType(tag: DW_TAG_class_type, name: "FwdDeclTemplate<int>",
133 // CHECK-SAME:             templateParams:
134 // CHECK-SAME:             identifier: "_ZTS15FwdDeclTemplateIiE")
135 
136 // CHECK: !DIGlobalVariable(name: "anon_enum", {{.*}}, type: ![[ANON_ENUM:[0-9]+]]
137 // CHECK: !DICompositeType(tag: DW_TAG_enumeration_type, scope: ![[NS]],
138 // CHECK-SAME:             line: 16
139 
140 // CHECK: !DIGlobalVariable(name: "GlobalUnion",
141 // CHECK-SAME:              type: ![[GLOBAL_UNION:[0-9]+]]
142 // CHECK: ![[GLOBAL_UNION]] = distinct !DICompositeType(tag: DW_TAG_union_type,
143 // CHECK-SAME:                elements: !{{[0-9]+}})
144 // CHECK: !DIGlobalVariable(name: "GlobalStruct",
145 // CHECK-SAME:              type: ![[GLOBAL_STRUCT:[0-9]+]]
146 // CHECK: ![[GLOBAL_STRUCT]] = distinct !DICompositeType(tag: DW_TAG_structure_type,
147 // CHECK-SAME:                elements: !{{[0-9]+}})
148 
149 
150 // CHECK: !DIGlobalVariable(name: "anon",
151 // CHECK-SAME:              type: ![[GLOBAL_ANON:[0-9]+]]
152 // CHECK: ![[GLOBAL_ANON]] = !DICompositeType(tag: DW_TAG_structure_type,
153 // CHECK-SAME:              name: "InAnonymousNamespace", {{.*}}DIFlagFwdDecl)
154 
155 
156 // CHECK: !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !0, entity: ![[STRUCT]], line: 27)
157 
158 // CHECK: !DICompileUnit(
159 // CHECK-SAME:           splitDebugFilename:
160 // CHECK-SAME:           dwoId:
161 // CHECK-PCH: !DICompileUnit({{.*}}splitDebugFilename:
162 // CHECK-PCH:                dwoId: 18446744073709551614
163