1; REQUIRES: object-emission
2
3; RUN: %llc_dwarf < %s -filetype=obj | llvm-dwarfdump -debug-dump=line - | FileCheck %s
4; RUN: %llc_dwarf < %s -filetype=asm | FileCheck --check-prefix=ASM %s
5
6; If multiple line tables are emitted, one per CU, those line tables can
7; unambiguously rely on the comp_dir of their owning CU and use directory '0'
8; to refer to it.
9
10; CHECK: .debug_line contents:
11; CHECK-NEXT: Line table prologue:
12; CHECK-NOT: include_directories
13; CHECK: file_names[   1]   0 {{.*}} a.cpp
14; CHECK-NOT: file_names
15
16; CHECK: Line table prologue:
17; CHECK-NOT: include_directories
18; CHECK: file_names[   1]   0 {{.*}} b.cpp
19; CHECK-NOT: file_names
20
21; However, if a single line table is emitted and shared between CUs, the
22; comp_dir is ambiguous and relying on it would lead to different path
23; interpretations depending on which CU lead to the table - so ensure that
24; full paths are always emitted in this case, never comp_dir relative.
25
26; ASM: .file   1 "/tmp/dbginfo/a{{[/\\]+}}a.cpp"
27; ASM: .file   2 "/tmp/dbginfo/b{{[/\\]+}}b.cpp"
28
29; Generated from the following source compiled to bitcode from within their
30; respective directories (with debug info) and linked together with llvm-link
31
32; a/a.cpp
33; void func() {
34; }
35
36; b/b.cpp
37; void func();
38; int main() {
39;   func();
40; }
41
42; Function Attrs: nounwind uwtable
43define void @_Z4funcv() #0 {
44entry:
45  ret void, !dbg !19
46}
47
48; Function Attrs: uwtable
49define i32 @main() #1 {
50entry:
51  call void @_Z4funcv(), !dbg !20
52  ret i32 0, !dbg !21
53}
54
55attributes #0 = { nounwind 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" }
56attributes #1 = { 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" }
57
58!llvm.dbg.cu = !{!0, !8}
59!llvm.module.flags = !{!16, !17}
60!llvm.ident = !{!18, !18}
61
62!0 = !MDCompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
63!1 = !MDFile(filename: "a.cpp", directory: "/tmp/dbginfo/a")
64!2 = !{}
65!3 = !{!4}
66!4 = !MDSubprogram(name: "func", linkageName: "_Z4funcv", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 1, file: !1, scope: !5, type: !6, function: void ()* @_Z4funcv, variables: !2)
67!5 = !MDFile(filename: "a.cpp", directory: "/tmp/dbginfo/a")
68!6 = !MDSubroutineType(types: !7)
69!7 = !{null}
70!8 = !MDCompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: 1, file: !9, enums: !2, retainedTypes: !2, subprograms: !10, globals: !2, imports: !2)
71!9 = !MDFile(filename: "b.cpp", directory: "/tmp/dbginfo/b")
72!10 = !{!11}
73!11 = !MDSubprogram(name: "main", line: 2, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 2, file: !9, scope: !12, type: !13, function: i32 ()* @main, variables: !2)
74!12 = !MDFile(filename: "b.cpp", directory: "/tmp/dbginfo/b")
75!13 = !MDSubroutineType(types: !14)
76!14 = !{!15}
77!15 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
78!16 = !{i32 2, !"Dwarf Version", i32 4}
79!17 = !{i32 1, !"Debug Info Version", i32 3}
80!18 = !{!"clang version 3.5.0 "}
81!19 = !MDLocation(line: 2, scope: !4)
82!20 = !MDLocation(line: 3, scope: !11)
83!21 = !MDLocation(line: 4, scope: !11)
84
85