1 // RUN: %clang_cc1 -emit-llvm -debug-info-kind=limited -triple x86_64-apple-darwin %s -o - | FileCheck %s
2 
3 // CHECK: @x ={{.*}} global %"struct.outer<foo>::inner" zeroinitializer, align 4, !dbg [[X:![0-9]+]]
4 
5 struct MyClass {
addMyClass6   template <int i> int add(int j) {
7     return i + j;
8   }
funcMyClass9   virtual void func() {
10   }
11 };
12 
add2(int x)13 int add2(int x) {
14   return MyClass().add<2>(x);
15 }
16 
add3(int x)17 inline int add3(int x) {
18   return MyClass().add<3>(x); // even though add<3> is ODR used, don't emit it since we don't codegen it
19 }
20 
21 // The compile unit pulls in the global variables first.
22 // CHECK: [[X]] = !DIGlobalVariableExpression(var: [[XV:.*]], expr: !DIExpression())
23 // CHECK: [[XV]] = distinct !DIGlobalVariable(name: "x",
24 // CHECK-SAME:                                type: ![[OUTER_FOO_INNER_ID:[0-9]+]]
25 //
26 // CHECK: {{![0-9]+}} = distinct !DIGlobalVariable(
27 // CHECK-SAME: name: "var"
28 // CHECK-SAME: templateParams: {{![0-9]+}}
29 // CHECK: !DITemplateTypeParameter(name: "T", type: [[TY:![0-9]+]])
30 // CHECK: {{![0-9]+}} = distinct !DIGlobalVariable(
31 // CHECK-SAME: name: "var"
32 // CHECK-SAME: templateParams: {{![0-9]+}}
33 // CHECK: !DITemplateTypeParameter(name: "T", type: {{![0-9]+}})
34 // CHECK: {{![0-9]+}} = distinct !DIGlobalVariable(
35 // CHECK-SAME: name: "varray"
36 // CHECK-SAME: templateParams: {{![0-9]+}}
37 // CHECK: !DITemplateValueParameter(name: "N", type: [[TY]], value: i32 1)
38 
39 // CHECK: ![[OUTER_FOO_INNER_ID:[0-9]*]] = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "inner"{{.*}}, identifier:
40 // CHECK: !DICompositeType(tag: DW_TAG_structure_type, name: "foo"
41 // CHECK-SAME:             elements: [[FOO_MEM:![0-9]*]]
42 // CHECK-SAME:             identifier: "_ZTS3foo"
43 // CHECK: [[FOO_MEM]] = !{[[FOO_FUNC:![0-9]*]]}
44 // CHECK: [[FOO_FUNC]] = !DISubprogram(name: "func", linkageName: "_ZN3foo4funcEN5outerIS_E5innerE",
45 // CHECK-SAME:                         type: [[FOO_FUNC_TYPE:![0-9]*]]
46 // CHECK: [[FOO_FUNC_TYPE]] = !DISubroutineType(types: [[FOO_FUNC_PARAMS:![0-9]*]])
47 // CHECK: [[FOO_FUNC_PARAMS]] = !{null, !{{[0-9]*}}, ![[OUTER_FOO_INNER_ID]]}
48 
49 // CHECK: [[C:![0-9]*]] = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "MyClass"
50 // CHECK-SAME:                             elements: [[C_MEM:![0-9]*]]
51 // CHECK-SAME:                             vtableHolder: [[C]]
52 // CHECK-SAME:                             identifier: "_ZTS7MyClass")
53 // CHECK: [[C_MEM]] = !{[[C_VPTR:![0-9]*]], [[C_FUNC:![0-9]*]]}
54 // CHECK: [[C_VPTR]] = !DIDerivedType(tag: DW_TAG_member, name: "_vptr$MyClass"
55 
56 // CHECK: [[C_FUNC]] = !DISubprogram(name: "func",{{.*}} line: 9,
57 
58 // CHECK: !DISubprogram(name: "add<2>"
59 // CHECK-SAME:          scope: [[C]]
60 //
61 // CHECK: [[VIRT_TEMP:![0-9]+]] = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "virt<elem>"
62 // CHECK-SAME:             elements: [[VIRT_MEM:![0-9]*]]
63 // CHECK-SAME:             vtableHolder: [[VIRT_TEMP]]
64 // CHECK-SAME:             templateParams: [[VIRT_TEMP_PARAM:![0-9]*]]
65 // CHECK-SAME:             identifier: "_ZTS4virtI4elemE"
66 
67 // CHECK: [[ELEM:![0-9]+]] = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "elem"
68 // CHECK-SAME:                                elements: [[ELEM_MEM:![0-9]*]]
69 // CHECK-SAME:                                identifier: "_ZTS4elem"
70 // CHECK: [[ELEM_MEM]] = !{[[ELEM_X:![0-9]*]]}
71 // CHECK: [[ELEM_X]] = !DIDerivedType(tag: DW_TAG_member, name: "x", scope: [[ELEM]]
72 // CHECK-SAME:                        baseType: [[VIRT_TEMP:![0-9]+]]
73 
74 // CHECK: [[VIRT_TEMP_PARAM]] = !{[[VIRT_T:![0-9]*]]}
75 // CHECK: [[VIRT_T]] = !DITemplateTypeParameter(name: "T", type: [[ELEM]])
76 
77 template<typename T>
78 struct outer {
79   struct inner {
80     int i;
81   };
82 };
83 
84 struct foo {
85   void func(outer<foo>::inner);
86 };
87 
func()88 inline void func() {
89   // require 'foo' to be complete before the emission of 'inner' so that, when
90   // constructing the context chain for 'x' we emit the full definition of
91   // 'foo', which requires the definition of 'inner' again
92   foo f;
93 }
94 
95 outer<foo>::inner x;
96 
97 template <typename T>
98 struct virt {
99   T* values;
100   virtual ~virt();
101 };
102 struct elem {
103   static virt<elem> x; // ensure that completing 'elem' will require/completing 'virt<elem>'
104 };
f1()105 inline void f1() {
106   elem e; // ensure 'elem' is required to be complete when it is emitted as a template argument for 'virt<elem>'
107 };
f2()108 void f2() {
109   virt<elem> d; // emit 'virt<elem>'
110 }
111 
112 // Check that the member function template specialization and implicit special
113 // members (the default ctor) refer to their class by scope, even though they
114 // didn't appear in the class's member list (C_MEM). This prevents the functions
115 // from being added to type units, while still appearing in the type
116 // declaration/reference in the compile unit.
117 // CHECK: !DISubprogram(name: "MyClass"
118 // CHECK-SAME:          scope: [[C]]
119 
120 template <typename T>
121 T var = T();
122 template <typename P>
123 P var<P *> = P();
124 template <typename T, int N>
125 T varray[N];
f3()126 void f3() {
127   var<int> = 1;
128   var<int *> = 1;
129   varray<int, 1>[0] = 1;
130 }
131