1; REQUIRES: default_triple, object-emission
2
3; RUN: llvm-link %s %p/type-unique-simple-b.ll -S -o %t
4; RUN: cat %t | FileCheck %s -check-prefix=LINK
5; RUN: %llc_dwarf -filetype=obj -O0 < %t > %t2
6; RUN: llvm-dwarfdump -debug-dump=info %t2 | FileCheck %s
7
8; Make sure the backend generates a single DIE and uses ref_addr.
9; CHECK: 0x[[BASE:.*]]: DW_TAG_structure_type
10; CHECK-NEXT: DW_AT_name {{.*}} = "Base"
11; CHECK-NOT: DW_TAG_structure_type
12; CHECK: 0x[[INT:.*]]: DW_TAG_base_type
13; CHECK-NEXT: DW_AT_name {{.*}} = "int"
14; CHECK-NOT: DW_TAG_base_type
15
16; CHECK: DW_TAG_compile_unit
17; CHECK: DW_TAG_formal_parameter
18; CHECK: DW_AT_type [DW_FORM_ref_addr] {{.*}}[[INT]])
19; CHECK: DW_TAG_variable
20; CHECK: DW_AT_type [DW_FORM_ref_addr] {{.*}}[[BASE]])
21
22; Make sure llvm-link only generates a single copy of the struct.
23; LINK: DW_TAG_structure_type
24; LINK-NOT: DW_TAG_structure_type
25; Content of header files:
26; struct Base {
27;   int a;
28; };
29; Content of foo.cpp:
30;
31; #include "a.hpp"
32; void f(int a) {
33;   Base t;
34; }
35; Content of bar.cpp:
36;
37; #include "a.hpp"
38; void f(int);
39; void g(int a) {
40;   Base t;
41; }
42; int main() {
43;   f(0);
44;   g(1);
45;   return 0;
46; }
47; ModuleID = 'foo.cpp'
48
49%struct.Base = type { i32 }
50
51; Function Attrs: nounwind ssp uwtable
52define void @_Z1fi(i32 %a) #0 !dbg !10 {
53entry:
54  %a.addr = alloca i32, align 4
55  %t = alloca %struct.Base, align 4
56  store i32 %a, i32* %a.addr, align 4
57  call void @llvm.dbg.declare(metadata i32* %a.addr, metadata !15, metadata !DIExpression()), !dbg !16
58  call void @llvm.dbg.declare(metadata %struct.Base* %t, metadata !17, metadata !DIExpression()), !dbg !18
59  ret void, !dbg !19
60}
61
62; Function Attrs: nounwind readnone
63declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
64
65attributes #0 = { nounwind ssp uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
66attributes #1 = { nounwind readnone }
67
68!llvm.dbg.cu = !{!0}
69!llvm.module.flags = !{!14, !20}
70
71!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.4 (http://llvm.org/git/clang.git c23b1db6268c8e7ce64026d57d1510c1aac200a0) (http://llvm.org/git/llvm.git 09b98fe3978eddefc2145adc1056cf21580ce945)", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !3, globals: !2, imports: !2)
72!1 = !DIFile(filename: "foo.cpp", directory: "/Users/mren/c_testing/type_unique_air/simple")
73!2 = !{}
74!3 = !{!4}
75!4 = !DICompositeType(tag: DW_TAG_structure_type, name: "Base", line: 1, size: 32, align: 32, file: !5, elements: !6, identifier: "_ZTS4Base")
76!5 = !DIFile(filename: "./a.hpp", directory: "/Users/mren/c_testing/type_unique_air/simple")
77!6 = !{!7}
78!7 = !DIDerivedType(tag: DW_TAG_member, name: "a", line: 2, size: 32, align: 32, file: !5, scope: !4, baseType: !8)
79!8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
80!10 = distinct !DISubprogram(name: "f", linkageName: "_Z1fi", line: 3, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 3, file: !1, scope: !11, type: !12, variables: !2)
81!11 = !DIFile(filename: "foo.cpp", directory: "/Users/mren/c_testing/type_unique_air/simple")
82!12 = !DISubroutineType(types: !13)
83!13 = !{null, !8}
84!14 = !{i32 2, !"Dwarf Version", i32 2}
85!15 = !DILocalVariable(name: "a", line: 3, arg: 1, scope: !10, file: !11, type: !8)
86!16 = !DILocation(line: 3, scope: !10)
87!17 = !DILocalVariable(name: "t", line: 4, scope: !10, file: !11, type: !4)
88!18 = !DILocation(line: 4, scope: !10)
89!19 = !DILocation(line: 5, scope: !10)
90!20 = !{i32 1, !"Debug Info Version", i32 3}
91