1 ; RUN: llc -mtriple=x86_64-apple-darwin %s -o %t -filetype=obj
2 ; RUN: llvm-dwarfdump -v -debug-info %t | FileCheck %s
4 ; test that the DW_AT_specification is a back edge in the file.
6 ; Skip the definition of zed(foo*)
7 ; CHECK: DW_TAG_subprogram
8 ; CHECK: DW_TAG_class_type
9 ; CHECK: DW_TAG_subprogram
10 ; CHECK: DW_AT_linkage_name {{.*}} "_ZN3foo3barEv"
11 ; CHECK: DW_TAG_subprogram
13 ; CHECK: DW_AT_specification {{.*}} "_ZN3foo3barEv"
15 %struct.foo = type { i8 }
17 define void @_Z3zedP3foo(%struct.foo* %x) uwtable !dbg !5 {
19 %x.addr = alloca %struct.foo*, align 8
20 store %struct.foo* %x, %struct.foo** %x.addr, align 8
21 call void @llvm.dbg.declare(metadata %struct.foo** %x.addr, metadata !23, metadata !DIExpression()), !dbg !24
22 %0 = load %struct.foo*, %struct.foo** %x.addr, align 8, !dbg !25
23 call void @_ZN3foo3barEv(%struct.foo* %0), !dbg !25
27 declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone
29 define linkonce_odr void @_ZN3foo3barEv(%struct.foo* %this) nounwind uwtable align 2 !dbg !20 {
31 %this.addr = alloca %struct.foo*, align 8
32 store %struct.foo* %this, %struct.foo** %this.addr, align 8
33 call void @llvm.dbg.declare(metadata %struct.foo** %this.addr, metadata !28, metadata !DIExpression()), !dbg !29
34 %this1 = load %struct.foo*, %struct.foo** %this.addr
39 !llvm.module.flags = !{!33}
41 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.0 ()", isOptimized: false, emissionKind: FullDebug, file: !32, enums: !1, retainedTypes: !1, globals: !1, imports: !1)
43 !5 = distinct !DISubprogram(name: "zed", linkageName: "_Z3zedP3foo", line: 4, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 4, file: !6, scope: !6, type: !7)
44 !6 = !DIFile(filename: "/home/espindola/llvm/test.cc", directory: "/home/espindola/tmpfs/build")
45 !7 = !DISubroutineType(types: !8)
47 !9 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !10)
48 !10 = !DICompositeType(tag: DW_TAG_class_type, name: "foo", line: 1, size: 8, align: 8, file: !32, elements: !11)
50 !12 = !DISubprogram(name: "bar", linkageName: "_ZN3foo3barEv", line: 2, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 2, file: !6, scope: !10, type: !13)
51 !13 = !DISubroutineType(types: !14)
53 !15 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial, baseType: !10)
54 !20 = distinct !DISubprogram(name: "bar", linkageName: "_ZN3foo3barEv", line: 2, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 2, file: !6, scope: null, type: !13, declaration: !12)
55 !23 = !DILocalVariable(name: "x", line: 4, arg: 1, scope: !5, file: !6, type: !9)
56 !24 = !DILocation(line: 4, column: 15, scope: !5)
57 !25 = !DILocation(line: 4, column: 20, scope: !26)
58 !26 = distinct !DILexicalBlock(line: 4, column: 18, file: !6, scope: !5)
59 !27 = !DILocation(line: 4, column: 30, scope: !26)
60 !28 = !DILocalVariable(name: "this", line: 2, arg: 1, flags: DIFlagArtificial, scope: !20, file: !6, type: !15)
61 !29 = !DILocation(line: 2, column: 8, scope: !20)
62 !30 = !DILocation(line: 2, column: 15, scope: !31)
63 !31 = distinct !DILexicalBlock(line: 2, column: 14, file: !6, scope: !20)
64 !32 = !DIFile(filename: "/home/espindola/llvm/test.cc", directory: "/home/espindola/tmpfs/build")
65 !33 = !{i32 1, !"Debug Info Version", i32 3}