1; REQUIRES: default_triple, object-emission
2;
3; RUN: llvm-link %s %p/type-unique-odr-b.ll -S -o - \
4; RUN:   | %llc_dwarf -dwarf-linkage-names=All -filetype=obj -O0 \
5; RUN:   | llvm-dwarfdump -v -debug-info - \
6; RUN:   | FileCheck %s
7; RUN: llvm-link %p/type-unique-odr-b.ll %s -S -o - \
8; RUN:   | %llc_dwarf -dwarf-linkage-names=All -filetype=obj -O0 \
9; RUN:   | llvm-dwarfdump -v -debug-info - \
10; RUN:   | FileCheck %s
11;
12; Test ODR-based type uniquing for C++ class members.
13; rdar://problem/15851313.
14;
15; $ cat -n type-unique-odr-a.cpp
16;     1	class A {
17;     2	  int data;
18;     3	protected:
19;     4	  void getFoo();
20;     5	};
21;     6
22;     7	static void bar() {
23;     8	  A a;
24;     9	}
25;    10
26;    11	void baz() { bar(); }
27;; #include "ab.h"
28; foo_t bar() {
29;     return A().getFoo();
30; }
31;
32; CHECK:      DW_TAG_class_type
33; CHECK-NEXT:   DW_AT_name {{.*}} "A"
34; CHECK-NOT:    DW_TAG
35; CHECK:        DW_TAG_member
36; CHECK-NEXT:     DW_AT_name {{.*}} "data"
37; CHECK-NOT:    DW_TAG
38; CHECK:        DW_TAG_subprogram
39; CHECK-NOT:    DW_TAG
40; CHECK:          DW_AT_linkage_name {{.*}} "_ZN1A6getFooEv"
41; CHECK-NOT:    DW_TAG
42; CHECK:          DW_AT_name {{.*}} "getFoo"
43
44; Ensure that there aren't any other subprograms in class A.
45; CHECK-NOT:      DW_TAG
46; CHECK:          DW_TAG_formal_parameter
47; CHECK-NOT:      DW_TAG
48; CHECK:          NULL
49; CHECK-NOT:    DW_TAG
50; CHECK:        NULL
51; CHECK-NOT:  DW_TAG
52; CHECK:      DW_TAG_base_type
53
54; Ensure that getFoo and A are only emitted once.
55; CHECK-NOT:  AT_name{{.*(getFoo)|("A")}}
56
57; ModuleID = 'type-unique-odr-a.cpp'
58
59%class.A = type { i32 }
60
61; Function Attrs: nounwind
62define void @_Z3bazv() #0 !dbg !15 {
63entry:
64  call void @_ZL3barv(), !dbg !23
65  ret void, !dbg !23
66}
67
68; Function Attrs: nounwind
69define internal void @_ZL3barv() #0 !dbg !19 {
70entry:
71  %a = alloca %class.A, align 4
72  call void @llvm.dbg.declare(metadata %class.A* %a, metadata !24, metadata !DIExpression()), !dbg !25
73  ret void, !dbg !26
74}
75
76; Function Attrs: nounwind readnone
77declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
78
79attributes #0 = { nounwind }
80attributes #1 = { nounwind readnone }
81
82!llvm.dbg.cu = !{!0}
83!llvm.module.flags = !{!20, !21}
84!llvm.ident = !{!22}
85
86!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !3, globals: !2, imports: !2)
87!1 = !DIFile(filename: "<unknown>", directory: "")
88!2 = !{}
89!3 = !{!4}
90!4 = !DICompositeType(tag: DW_TAG_class_type, name: "A", line: 1, size: 32, align: 32, file: !5, elements: !6, identifier: "_ZTS1A")
91!5 = !DIFile(filename: "type-unique-odr-a.cpp", directory: "")
92!6 = !{!7, !9}
93!7 = !DIDerivedType(tag: DW_TAG_member, name: "data", line: 2, size: 32, align: 32, flags: DIFlagPrivate, file: !5, scope: !4, baseType: !8)
94!8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
95!9 = !DISubprogram(name: "getFoo", linkageName: "_ZN1A6getFooEv", line: 4, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagProtected | DIFlagPrototyped, isOptimized: false, scopeLine: 4, file: !5, scope: !4, type: !10)
96!10 = !DISubroutineType(types: !11)
97!11 = !{null, !12}
98!12 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !4)
99!15 = distinct !DISubprogram(name: "baz", linkageName: "_Z3bazv", line: 11, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 11, file: !5, scope: !16, type: !17, retainedNodes: !2)
100!16 = !DIFile(filename: "type-unique-odr-a.cpp", directory: "")
101!17 = !DISubroutineType(types: !18)
102!18 = !{null}
103!19 = distinct !DISubprogram(name: "bar", linkageName: "_ZL3barv", line: 7, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 7, file: !5, scope: !16, type: !17, retainedNodes: !2)
104!20 = !{i32 2, !"Dwarf Version", i32 4}
105!21 = !{i32 1, !"Debug Info Version", i32 3}
106!22 = !{!"clang version 3.5.0 "}
107!23 = !DILocation(line: 11, scope: !15)
108!24 = !DILocalVariable(name: "a", line: 8, scope: !19, file: !16, type: !4)
109!25 = !DILocation(line: 8, scope: !19)
110!26 = !DILocation(line: 9, scope: !19)
111