1// RUN: %clang_cc1 -emit-llvm -debug-info-kind=limited -triple x86_64-apple-darwin %s -o - | FileCheck %s
2
3struct MyClass {
4  template <int i> int add(int j) {
5    return i + j;
6  }
7  virtual void func() {
8  }
9};
10
11int add2(int x) {
12  return MyClass().add<2>(x);
13}
14
15inline int add3(int x) {
16  return MyClass().add<3>(x); // even though add<3> is ODR used, don't emit it since we don't codegen it
17}
18
19// The compile unit pulls in the global variables first.
20// CHECK: !DIGlobalVariable(name: "x",
21// CHECK-SAME:              type: ![[OUTER_FOO_INNER_ID:[0-9]+]]
22// CHECK-SAME:              variable: %"struct.outer<foo>::inner"* @x
23
24// CHECK: ![[OUTER_FOO_INNER_ID:[0-9]*]] = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "inner"{{.*}}, identifier:
25// CHECK: !DICompositeType(tag: DW_TAG_structure_type, name: "foo"
26// CHECK-SAME:             elements: [[FOO_MEM:![0-9]*]]
27// CHECK-SAME:             identifier: "_ZTS3foo"
28// CHECK: [[FOO_MEM]] = !{[[FOO_FUNC:![0-9]*]]}
29// CHECK: [[FOO_FUNC]] = !DISubprogram(name: "func", linkageName: "_ZN3foo4funcEN5outerIS_E5innerE",
30// CHECK-SAME:                         type: [[FOO_FUNC_TYPE:![0-9]*]]
31// CHECK: [[FOO_FUNC_TYPE]] = !DISubroutineType(types: [[FOO_FUNC_PARAMS:![0-9]*]])
32// CHECK: [[FOO_FUNC_PARAMS]] = !{null, !{{[0-9]*}}, ![[OUTER_FOO_INNER_ID]]}
33
34// CHECK: [[C:![0-9]*]] = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "MyClass"
35// CHECK-SAME:                             elements: [[C_MEM:![0-9]*]]
36// CHECK-SAME:                             vtableHolder: [[C]]
37// CHECK-SAME:                             identifier: "_ZTS7MyClass")
38// CHECK: [[C_MEM]] = !{[[C_VPTR:![0-9]*]], [[C_FUNC:![0-9]*]]}
39// CHECK: [[C_VPTR]] = !DIDerivedType(tag: DW_TAG_member, name: "_vptr$MyClass"
40
41// CHECK: [[C_FUNC]] = !DISubprogram(name: "func",{{.*}} line: 7,
42
43// CHECK: !DISubprogram(name: "add<2>"
44// CHECK-SAME:          scope: [[C]]
45//
46// CHECK: [[VIRT_TEMP:![0-9]+]] = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "virt<elem>"
47// CHECK-SAME:             elements: [[VIRT_MEM:![0-9]*]]
48// CHECK-SAME:             vtableHolder: [[VIRT_TEMP]]
49// CHECK-SAME:             templateParams: [[VIRT_TEMP_PARAM:![0-9]*]]
50// CHECK-SAME:             identifier: "_ZTS4virtI4elemE"
51
52// CHECK: [[ELEM:![0-9]+]] = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "elem"
53// CHECK-SAME:                                elements: [[ELEM_MEM:![0-9]*]]
54// CHECK-SAME:                                identifier: "_ZTS4elem"
55// CHECK: [[ELEM_MEM]] = !{[[ELEM_X:![0-9]*]]}
56// CHECK: [[ELEM_X]] = !DIDerivedType(tag: DW_TAG_member, name: "x", scope: [[ELEM]]
57// CHECK-SAME:                        baseType: [[VIRT_TEMP:![0-9]+]]
58
59// CHECK: [[VIRT_TEMP_PARAM]] = !{[[VIRT_T:![0-9]*]]}
60// CHECK: [[VIRT_T]] = !DITemplateTypeParameter(name: "T", type: [[ELEM]])
61
62template<typename T>
63struct outer {
64  struct inner {
65    int i;
66  };
67};
68
69struct foo {
70  void func(outer<foo>::inner);
71};
72
73inline void func() {
74  // require 'foo' to be complete before the emission of 'inner' so that, when
75  // constructing the context chain for 'x' we emit the full definition of
76  // 'foo', which requires the definition of 'inner' again
77  foo f;
78}
79
80outer<foo>::inner x;
81
82template <typename T>
83struct virt {
84  T* values;
85  virtual ~virt();
86};
87struct elem {
88  static virt<elem> x; // ensure that completing 'elem' will require/completing 'virt<elem>'
89};
90inline void f1() {
91  elem e; // ensure 'elem' is required to be complete when it is emitted as a template argument for 'virt<elem>'
92};
93void f2() {
94  virt<elem> d; // emit 'virt<elem>'
95}
96
97// Check that the member function template specialization and implicit special
98// members (the default ctor) refer to their class by scope, even though they
99// didn't appear in the class's member list (C_MEM). This prevents the functions
100// from being added to type units, while still appearing in the type
101// declaration/reference in the compile unit.
102// CHECK: !DISubprogram(name: "MyClass"
103// CHECK-SAME:          scope: [[C]]
104