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 43 define void @_Z4funcv() #0 !dbg !4 { 44 entry: 45 ret void, !dbg !19 46 } 47 48 ; Function Attrs: uwtable 49 define i32 @main() #1 !dbg !11 { 50 entry: 51 call void @_Z4funcv(), !dbg !20 52 ret i32 0, !dbg !21 53 } 54 55 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" } 56 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" } 57 58 !llvm.dbg.cu = !{!0, !8} 59 !llvm.module.flags = !{!16, !17} 60 !llvm.ident = !{!18, !18} 61 62 !0 = distinct !DICompileUnit(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 = !DIFile(filename: "a.cpp", directory: "/tmp/dbginfo/a") 64 !2 = !{} 65 !3 = !{!4} 66 !4 = distinct !DISubprogram(name: "func", linkageName: "_Z4funcv", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 1, file: !1, scope: !5, type: !6, variables: !2) 67 !5 = !DIFile(filename: "a.cpp", directory: "/tmp/dbginfo/a") 68 !6 = !DISubroutineType(types: !7) 69 !7 = !{null} 70 !8 = distinct !DICompileUnit(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 = !DIFile(filename: "b.cpp", directory: "/tmp/dbginfo/b") 72 !10 = !{!11} 73 !11 = distinct !DISubprogram(name: "main", line: 2, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 2, file: !9, scope: !12, type: !13, variables: !2) 74 !12 = !DIFile(filename: "b.cpp", directory: "/tmp/dbginfo/b") 75 !13 = !DISubroutineType(types: !14) 76 !14 = !{!15} 77 !15 = !DIBasicType(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 = !DILocation(line: 2, scope: !4) 82 !20 = !DILocation(line: 3, scope: !11) 83 !21 = !DILocation(line: 4, scope: !11) 84 85
