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; REQUIRES: object-emission

; RUN: %llc_dwarf < %s -filetype=obj | llvm-dwarfdump -debug-dump=line - | FileCheck %s
; RUN: %llc_dwarf < %s -filetype=asm | FileCheck --check-prefix=ASM %s

; If multiple line tables are emitted, one per CU, those line tables can
; unambiguously rely on the comp_dir of their owning CU and use directory '0'
; to refer to it.

; CHECK: .debug_line contents:
; CHECK-NEXT: Line table prologue:
; CHECK-NOT: include_directories
; CHECK: file_names[   1]   0 {{.*}} a.cpp
; CHECK-NOT: file_names

; CHECK: Line table prologue:
; CHECK-NOT: include_directories
; CHECK: file_names[   1]   0 {{.*}} b.cpp
; CHECK-NOT: file_names

; However, if a single line table is emitted and shared between CUs, the
; comp_dir is ambiguous and relying on it would lead to different path
; interpretations depending on which CU lead to the table - so ensure that
; full paths are always emitted in this case, never comp_dir relative.

; ASM: .file   1 "/tmp/dbginfo/a{{[/\\]+}}a.cpp"
; ASM: .file   2 "/tmp/dbginfo/b{{[/\\]+}}b.cpp"

; Generated from the following source compiled to bitcode from within their
; respective directories (with debug info) and linked together with llvm-link

; a/a.cpp
; void func() {
; }

; b/b.cpp
; void func();
; int main() {
;   func();
; }

; Function Attrs: nounwind uwtable
define void @_Z4funcv() #0 {
entry:
  ret void, !dbg !19
}

; Function Attrs: uwtable
define i32 @main() #1 {
entry:
  call void @_Z4funcv(), !dbg !20
  ret i32 0, !dbg !21
}

attributes #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" }
attributes #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" }

!llvm.dbg.cu = !{!0, !8}
!llvm.module.flags = !{!16, !17}
!llvm.ident = !{!18, !18}

!0 = metadata !{i32 786449, metadata !1, i32 4, metadata !"clang version 3.5.0 ", i1 false, metadata !"", i32 0, metadata !2, metadata !2, metadata !3, metadata !2, metadata !2, metadata !"", i32 1}
!1 = metadata !{metadata !"a.cpp", metadata !"/tmp/dbginfo/a"}
!2 = metadata !{}
!3 = metadata !{metadata !4}
!4 = metadata !{i32 786478, metadata !1, metadata !5, metadata !"func", metadata !"func", metadata !"_Z4funcv", i32 1, metadata !6, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, void ()* @_Z4funcv, null, null, metadata !2, i32 1} ; [ DW_TAG_subprogram ] [line 1] [def] [func]
!5 = metadata !{i32 786473, metadata !1}          ; [ DW_TAG_file_type ] [/tmp/dbginfo/a/a.cpp]
!6 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !7, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!7 = metadata !{null}
!8 = metadata !{i32 786449, metadata !9, i32 4, metadata !"clang version 3.5.0 ", i1 false, metadata !"", i32 0, metadata !2, metadata !2, metadata !10, metadata !2, metadata !2, metadata !"", i32 1}
!9 = metadata !{metadata !"b.cpp", metadata !"/tmp/dbginfo/b"}
!10 = metadata !{metadata !11}
!11 = metadata !{i32 786478, metadata !9, metadata !12, metadata !"main", metadata !"main", metadata !"", i32 2, metadata !13, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, i32 ()* @main, null, null, metadata !2, i32 2} ; [ DW_TAG_subprogram ] [line 2] [def] [main]
!12 = metadata !{i32 786473, metadata !9}         ; [ DW_TAG_file_type ] [/tmp/dbginfo/b/b.cpp]
!13 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !14, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!14 = metadata !{metadata !15}
!15 = metadata !{i32 786468, null, null, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
!16 = metadata !{i32 2, metadata !"Dwarf Version", i32 4}
!17 = metadata !{i32 1, metadata !"Debug Info Version", i32 1}
!18 = metadata !{metadata !"clang version 3.5.0 "}
!19 = metadata !{i32 2, i32 0, metadata !4, null}
!20 = metadata !{i32 3, i32 0, metadata !11, null}
!21 = metadata !{i32 4, i32 0, metadata !11, null}