1 ; RUN: %llc_dwarf -O0 -filetype=obj -o %t.o %s
2 ; RUN: llvm-dwarfdump -debug-dump=info %t.o | FileCheck %s
3 ; REQUIRES: object-emission
5 ; Test debug info for variadic function arguments.
6 ; Created from tools/clang/tests/CodeGenCXX/debug-info-varargs.cpp
8 ; The ... parameter of variadic should be emitted as
9 ; DW_TAG_unspecified_parameters.
11 ; Normal variadic function.
14 ; CHECK: DW_TAG_subprogram
16 ; CHECK: DW_AT_name {{.*}} "a"
18 ; CHECK: DW_TAG_formal_parameter
20 ; CHECK: DW_TAG_formal_parameter
22 ; CHECK: DW_TAG_unspecified_parameters
24 ; CHECK: DW_TAG_subprogram
26 ; CHECK: DW_AT_name {{.*}} "b"
28 ; CHECK: DW_TAG_formal_parameter
30 ; CHECK: DW_TAG_variable
32 ; CHECK: DW_TAG_variable
34 ; CHECK: DW_TAG_unspecified_parameters
36 ; Variadic C++ member function.
37 ; struct A { void a(int c, ...); }
39 ; Variadic function pointer.
40 ; void (*fptr)(int, ...);
42 ; CHECK: DW_TAG_subroutine_type
44 ; CHECK: DW_TAG_formal_parameter
46 ; CHECK: DW_TAG_unspecified_parameters
48 ; ModuleID = 'llvm/tools/clang/test/CodeGenCXX/debug-info-varargs.cpp'
50 %struct.A = type { i8 }
52 ; Function Attrs: nounwind ssp uwtable
53 define void @_Z1biz(i32 %c, ...) #0 {
54 %1 = alloca i32, align 4
55 %a = alloca %struct.A, align 1
56 %fptr = alloca void (i32, ...)*, align 8
57 store i32 %c, i32* %1, align 4
58 call void @llvm.dbg.declare(metadata i32* %1, metadata !21, metadata !DIExpression()), !dbg !22
59 call void @llvm.dbg.declare(metadata %struct.A* %a, metadata !23, metadata !DIExpression()), !dbg !24
60 call void @llvm.dbg.declare(metadata void (i32, ...)** %fptr, metadata !25, metadata !DIExpression()), !dbg !27
61 store void (i32, ...)* @_Z1biz, void (i32, ...)** %fptr, align 8, !dbg !27
65 ; Function Attrs: nounwind readnone
66 declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
68 attributes #0 = { nounwind ssp uwtable }
69 attributes #1 = { nounwind readnone }
72 !llvm.module.flags = !{!18, !19}
75 !0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5 ", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !3, subprograms: !13, globals: !2, imports: !2)
76 !1 = !DIFile(filename: "llvm/tools/clang/test/CodeGenCXX/debug-info-varargs.cpp", directory: "radar/13690847")
79 !4 = !DICompositeType(tag: DW_TAG_structure_type, name: "A", line: 3, size: 8, align: 8, file: !1, elements: !5, identifier: "_ZTS1A")
81 !6 = !DISubprogram(name: "a", linkageName: "_ZN1A1aEiz", line: 6, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 6, file: !1, scope: !"_ZTS1A", type: !7)
82 !7 = !DISubroutineType(types: !8)
83 !8 = !{null, !9, !10, null}
84 !9 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !"_ZTS1A")
85 !10 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
87 !14 = !DISubprogram(name: "b", linkageName: "_Z1biz", line: 13, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 13, file: !1, scope: !15, type: !16, function: void (i32, ...)* @_Z1biz, variables: !2)
88 !15 = !DIFile(filename: "llvm/tools/clang/test/CodeGenCXX/debug-info-varargs.cpp", directory: "radar/13690847")
89 !16 = !DISubroutineType(types: !17)
90 !17 = !{null, !10, null}
91 !18 = !{i32 2, !"Dwarf Version", i32 2}
92 !19 = !{i32 1, !"Debug Info Version", i32 3}
93 !20 = !{!"clang version 3.5 "}
94 !21 = !DILocalVariable(tag: DW_TAG_arg_variable, name: "c", line: 13, arg: 1, scope: !14, file: !15, type: !10)
95 !22 = !DILocation(line: 13, scope: !14)
96 !23 = !DILocalVariable(tag: DW_TAG_auto_variable, name: "a", line: 16, scope: !14, file: !15, type: !4)
97 !24 = !DILocation(line: 16, scope: !14)
98 !25 = !DILocalVariable(tag: DW_TAG_auto_variable, name: "fptr", line: 18, scope: !14, file: !15, type: !26)
99 !26 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !16)
100 !27 = !DILocation(line: 18, scope: !14)
101 !28 = !DILocation(line: 22, scope: !14)