1 // RUN: rm -rf %t
2 // Test that only forward declarations are emitted for types defined 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
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 
32 // Template instantiations.
33 DebugCXX::Template<long> implicitTemplate;
34 DebugCXX::Template<int> explicitTemplate;
35 DebugCXX::FloatInstantiation typedefTemplate;
36 DebugCXX::B anchoredTemplate;
37 
38 int Struct::static_member = -1;
39 enum {
40   e3 = -1
41 } conflicting_uid = e3;
42 auto anon_enum = DebugCXX::e2;
43 char _anchor = anon_enum + conflicting_uid;
44 
45 TypedefUnion tdu;
46 TypedefEnum tde;
47 TypedefStruct tds;
48 TypedefTemplate tdt;
49 Template1<int> explicitTemplate1;
50 
51 template <class T> class FwdDeclTemplate { T t; };
52 TypedefFwdDeclTemplate tdfdt;
53 
54 InAnonymousNamespace anon;
55 
56 // Types that are forward-declared in the module and defined here.
57 struct PureFwdDecl { int i; };
58 PureFwdDecl definedLocally;
59 
60 struct Specialized<int>::Member { int i; };
61 struct Specialized<int>::Member definedLocally2;
62 
63 template <class T> struct FwdDeclTemplateMember<T>::Member { T t; };
64 TypedefFwdDeclTemplateMember tdfdtm;
65 
66 SpecializedBase definedLocally3;
67 extern template class WithSpecializedBase<int>;
68 WithSpecializedBase<int> definedLocally4;
69 
70 void foo() {
71   anon.i = GlobalStruct.i = GlobalUnion.i = GlobalEnum;
72   A a;
73   Virtual virt;
74 }
75 
76 // CHECK: ![[CPP:.*]] = !DIFile(filename: {{.*}}ExtDebugInfo.cpp"
77 
78 // CHECK: !DICompositeType(tag: DW_TAG_enumeration_type, name: "Enum",
79 // CHECK-SAME:             scope: ![[NS:[0-9]+]],
80 // CHECK-SAME:             flags: DIFlagFwdDecl
81 // CHECK-SAME:             identifier:  "_ZTSN8DebugCXX4EnumE")
82 
83 // CHECK: ![[NS]] = !DINamespace(name: "DebugCXX", scope: ![[MOD:[0-9]+]])
84 // CHECK: ![[MOD]] = !DIModule(scope: null, name: {{.*}}DebugCXX
85 
86 // This type is not anchored in the module by an explicit template instantiation.
87 // CHECK: !DICompositeType(tag: DW_TAG_class_type,
88 // CHECK-SAME:             name: "Template<long, DebugCXX::traits<long>>",
89 // CHECK-SAME:             scope: ![[NS]],
90 // CHECK-SAME:             elements:
91 // CHECK-SAME:             identifier: "_ZTSN8DebugCXX8TemplateIlNS_6traitsIlEEEE")
92 
93 // This type is anchored in the module by an explicit template instantiation.
94 // CHECK: !DICompositeType(tag: DW_TAG_class_type,
95 // CHECK-SAME:             name: "Template<int, DebugCXX::traits<int>>",
96 // CHECK-SAME:             scope: ![[NS]],
97 // CHECK-SAME:             flags: DIFlagFwdDecl
98 // CHECK-SAME:             identifier: "_ZTSN8DebugCXX8TemplateIiNS_6traitsIiEEEE")
99 
100 // This type isn't, however, even with standalone non-module debug info this
101 // type is a forward declaration.
102 // CHECK-NOT: !DICompositeType(tag: DW_TAG_structure_type, name: "traits<int>",
103 
104 // This one isn't.
105 // CHECK: !DICompositeType(tag: DW_TAG_class_type,
106 // CHECK-SAME:             name: "Template<float, DebugCXX::traits<float>>",
107 // CHECK-SAME:             scope: ![[NS]],
108 // CHECK-SAME:             elements:
109 // CHECK-SAME:             templateParams:
110 // CHECK-SAME:             identifier: "_ZTSN8DebugCXX8TemplateIfNS_6traitsIfEEEE")
111 
112 // This type is anchored in the module by an explicit template instantiation.
113 // CHECK: !DICompositeType(tag: DW_TAG_structure_type, name: "traits<float>",
114 // CHECK-SAME:             flags: DIFlagFwdDecl
115 // CHECK-SAME:             identifier: "_ZTSN8DebugCXX6traitsIfEE")
116 
117 
118 // This type is anchored in the module via a function argument,
119 // but we don't know this (yet).
120 // CHECK: !DICompositeType(tag: DW_TAG_class_type, name: "A<void>",
121 // CHECK-SAME:             scope: ![[NS]],
122 // CHECK-SAME:             elements:
123 // CHECK-SAME:             identifier: "_ZTSN8DebugCXX1AIJvEEE")
124 
125 // CHECK: !DIDerivedType(tag: DW_TAG_member, name: "static_member",
126 // CHECK-SAME:           scope: ![[STRUCT:[0-9]*]]
127 
128 // CHECK: ![[STRUCT]] = !DICompositeType(tag: DW_TAG_structure_type, name: "Struct",
129 // CHECK-SAME:             scope: ![[NS]],
130 // CHECK-SAME:             flags: DIFlagFwdDecl
131 // CHECK-SAME:             identifier: "_ZTSN8DebugCXX6StructE")
132 
133 // CHECK: !DICompositeType(tag: DW_TAG_union_type,
134 // CHECK-SAME:             flags: DIFlagFwdDecl
135 // CHECK-SAME:             identifier: "_ZTS12TypedefUnion")
136 // CHECK: !DICompositeType(tag: DW_TAG_enumeration_type,
137 // CHECK-SAME:             flags: DIFlagFwdDecl,
138 // CHECK-SAME:             identifier: "_ZTS11TypedefEnum")
139 // CHECK: !DICompositeType(tag: DW_TAG_structure_type,
140 // CHECK-SAME:             flags: DIFlagFwdDecl,
141 // CHECK-SAME:             identifier: "_ZTS13TypedefStruct")
142 
143 // This one isn't.
144 // CHECK: !DICompositeType(tag: DW_TAG_class_type, name: "Template1<void *>",
145 // CHECK-SAME:             elements:
146 // CHECK-SAME:             templateParams:
147 // CHECK-SAME:             identifier: "_ZTS9Template1IPvE")
148 
149 // This type is anchored in the module by an explicit template instantiation.
150 // CHECK: !DICompositeType(tag: DW_TAG_class_type, name: "Template1<int>",
151 // CHECK-SAME:             flags: DIFlagFwdDecl,
152 // CHECK-SAME:             identifier: "_ZTS9Template1IiE")
153 
154 // CHECK: !DICompositeType(tag: DW_TAG_class_type, name: "FwdDeclTemplate<int>",
155 // CHECK-SAME:             elements:
156 // CHECK-SAME:             templateParams:
157 // CHECK-SAME:             identifier: "_ZTS15FwdDeclTemplateIiE")
158 
159 // This type is defined locally and forward-declared in the module.
160 // CHECK: !DICompositeType(tag: DW_TAG_structure_type, name: "PureFwdDecl",
161 // CHECK-SAME:             elements:
162 // CHECK-SAME:             identifier: "_ZTS11PureFwdDecl")
163 
164 // This type is defined locally and forward-declared in the module.
165 // CHECK: !DICompositeType(tag: DW_TAG_structure_type, name: "Member",
166 // CHECK-SAME:             elements:
167 // CHECK-SAME:             identifier: "_ZTSN11SpecializedIiE6MemberE")
168 
169 // This type is defined locally and forward-declared in the module.
170 // CHECK: !DICompositeType(tag: DW_TAG_structure_type, name: "Member",
171 // CHECK-SAME:             elements:
172 // CHECK-SAME:             identifier: "_ZTSN21FwdDeclTemplateMemberIiE6MemberE")
173 
174 // This type is defined locally and forward-declared in the module.
175 // CHECK: !DIDerivedType(tag: DW_TAG_typedef, name: "SpecializedBase",
176 // CHECK-SAME:           baseType: ![[SPECIALIZEDBASE:.*]])
177 // CHECK: ![[SPECIALIZEDBASE]] =
178 // CHECK-SAME: !DICompositeType(tag: DW_TAG_class_type,
179 // CHECK-SAME:                  name: "WithSpecializedBase<float>",
180 // CHECK-SAME:                  elements:
181 // CHECK-SAME:                  identifier: "_ZTS19WithSpecializedBaseIfE")
182 
183 // This type is explicitly specialized locally.
184 // CHECK: !DICompositeType(tag: DW_TAG_class_type, name: "WithSpecializedBase<int>",
185 // CHECK-SAME:             elements:
186 // CHECK-SAME:             identifier: "_ZTS19WithSpecializedBaseIiE")
187 
188 // CHECK: !DIGlobalVariable(name: "anon_enum", {{.*}}, type: ![[ANON_ENUM:[0-9]+]]
189 // CHECK: !DICompositeType(tag: DW_TAG_enumeration_type, scope: ![[NS]],
190 // CHECK-SAME:             line: 19
191 
192 // CHECK: !DIGlobalVariable(name: "GlobalUnion",
193 // CHECK-SAME:              type: ![[GLOBAL_UNION:[0-9]+]]
194 // CHECK: ![[GLOBAL_UNION]] = distinct !DICompositeType(tag: DW_TAG_union_type,
195 // CHECK-SAME:                elements: !{{[0-9]+}})
196 // CHECK: !DIGlobalVariable(name: "GlobalStruct",
197 // CHECK-SAME:              type: ![[GLOBAL_STRUCT:[0-9]+]]
198 // CHECK: ![[GLOBAL_STRUCT]] = distinct !DICompositeType(tag: DW_TAG_structure_type,
199 // CHECK-SAME:                elements: !{{[0-9]+}})
200 
201 
202 // CHECK: !DIGlobalVariable(name: "anon",
203 // CHECK-SAME:              type: ![[GLOBAL_ANON:[0-9]+]]
204 // CHECK: ![[GLOBAL_ANON]] = !DICompositeType(tag: DW_TAG_structure_type,
205 // CHECK-SAME:              name: "InAnonymousNamespace", {{.*}}DIFlagFwdDecl)
206 
207 
208 // CHECK: !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !{{[0-9]+}}, entity: ![[STRUCT]], file: ![[CPP]], line: 27)
209 
210 // CHECK: !DICompileUnit(
211 // CHECK-SAME:           splitDebugFilename:
212 // CHECK-SAME:           dwoId:
213 // CHECK-PCH: !DICompileUnit({{.*}}splitDebugFilename:
214 // CHECK-PCH:                dwoId: 18446744073709551614
215 
216 // CHECK: !DICompositeType(tag: DW_TAG_class_type, name: "A",
217 // CHECK-SAME:             DIFlagFwdDecl
218 
219 // There is a full definition of the type available in the module.
220 // CHECK: !DICompositeType(tag: DW_TAG_structure_type, name: "Virtual",
221 // CHECK-SAME:             DIFlagFwdDecl
222 // CHECK-SAME:             identifier: "_ZTS7Virtual")
223