1 ; RUN: llc -filetype=obj -use-unknown-locations=Enable -mtriple=x86_64-unknown-linux %s -o %t 2 ; RUN: llvm-dwarfdump -debug-line %t | FileCheck %s 3 4 define void @_Z3bazv() !dbg !6 { 5 call void @_Z3foov(), !dbg !9 6 call void @_Z3foov() ; no !dbg, so will be marked as line 0 7 ret void, !dbg !11 8 } 9 10 declare void @_Z3foov() 11 12 !llvm.dbg.cu = !{!0} 13 !llvm.module.flags = !{!3, !4} 14 !llvm.ident = !{!5} 15 16 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.9.0 (trunk 267219)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) 17 !1 = !DIFile(filename: "test.cc", directory: ".") 18 !2 = !{} 19 !3 = !{i32 2, !"Dwarf Version", i32 4} 20 !4 = !{i32 2, !"Debug Info Version", i32 3} 21 !5 = !{!"clang version 3.9.0 (trunk 267219)"} 22 !6 = distinct !DISubprogram(name: "baz", linkageName: "_Z3bazv", scope: !1, file: !1, line: 3, type: !7, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2) 23 !7 = !DISubroutineType(types: !8) 24 !8 = !{null} 25 !9 = !DILocation(line: 4, column: 3, scope: !10) 26 !10 = !DILexicalBlockFile(scope: !6, file: !1, discriminator: 1) 27 !11 = !DILocation(line: 6, column: 1, scope: !6) 28 29 ; Look at the lengths. We can't verify the line-number-program size 30 ; directly, but the difference in the two lengths should not change 31 ; unexpectedly. 32 ; CHECK: total_length: 0x00000044 33 ; CHECK: prologue_length: 0x0000001f 34 ; 35 ; Verify that we see a line entry with a discriminator, and the next entry 36 ; has line 0 and no discriminator. 37 ; line column file ISA discriminator 38 ; CHECK: 4 3 1 0 1 39 ; CHECK-NEXT: 0 3 1 0 0 40
