380ac53dfa
This commit introduces a helper function to DWARFAcceleratorTable::Entry which follows DW_IDX_Parent attributes to returns the corresponding parent Entry in the table. It is tested by enhancing dwarfdump so that it now prints: 1. When data is corrupt. 2. When parent information is present, but the parent is not indexed. 3. The parent entry offset, when the parent is present and indexed. This is printed in terms a real entry offset (the same that gets printed at the start of each entry: "Entry @ 0x..."), instead of the encoded number in the table (which is an offset from the start off the Entry list). This makes it easy to visually inspect the dwarfdump and check what the parent is.
75 lines
2.9 KiB
LLVM
75 lines
2.9 KiB
LLVM
; XFAIL: target={{.*}}-aix{{.*}}
|
|
; RUN: %llc_dwarf -accel-tables=Dwarf -filetype=obj -o %t < %s
|
|
; RUN: llvm-dwarfdump -debug-names %t | FileCheck %s
|
|
; RUN: llvm-dwarfdump -debug-names -verify %t | FileCheck --check-prefix=VERIFY %s
|
|
|
|
; Check the header
|
|
; CHECK: CU count: 1
|
|
; CHECK: Local TU count: 0
|
|
; CHECK: Foreign TU count: 0
|
|
; CHECK: Name count: 3
|
|
; CHECK: CU[0]: 0x{{[0-9a-f]*}}
|
|
|
|
; CHECK: Abbreviation [[ABBREV_STRUCT:0x[0-9a-f]*]] {
|
|
; CHECK-NEXT: Tag: DW_TAG_structure_type
|
|
; CHECK-NEXT: DW_IDX_die_offset: DW_FORM_ref4
|
|
; CHECK-NEXT: }
|
|
|
|
; CHECK: Abbreviation [[ABBREV:0x[0-9a-f]*]]
|
|
; CHECK-NEXT: Tag: DW_TAG_variable
|
|
; CHECK-NEXT: DW_IDX_die_offset: DW_FORM_ref4
|
|
; CHECK-NEXT: DW_IDX_parent: DW_FORM_flag_present
|
|
; CHECK-NEXT: }
|
|
|
|
; The entry for A::B must not have an IDX_Parent, since A is only a forward
|
|
; declaration.
|
|
; CHECK: String: 0x{{[0-9a-f]*}} "B"
|
|
; CHECK-NEXT: Entry
|
|
; CHECK-NEXT: Abbrev: [[ABBREV_STRUCT]]
|
|
; CHECK-NEXT: Tag: DW_TAG_structure_type
|
|
; CHECK-NEXT: DW_IDX_die_offset: 0x{{[0-9a-f]*}}
|
|
; CHECK-NEXT: }
|
|
|
|
; CHECK: String: 0x{{[0-9a-f]*}} "someA_B"
|
|
; CHECK-NEXT: Entry
|
|
; CHECK-NEXT: Abbrev: [[ABBREV]]
|
|
; CHECK-NEXT: Tag: DW_TAG_variable
|
|
; CHECK-NEXT: DW_IDX_die_offset: 0x{{[0-9a-f]*}}
|
|
; CHECK-NEXT: DW_IDX_parent: <parent not indexed>
|
|
; CHECK-NEXT: }
|
|
|
|
; CHECK: String: 0x{{[0-9a-f]*}} "foobar"
|
|
; CHECK-NEXT: Entry
|
|
; CHECK-NEXT: Abbrev: [[ABBREV]]
|
|
; CHECK-NEXT: Tag: DW_TAG_variable
|
|
; CHECK-NEXT: DW_IDX_die_offset: 0x{{[0-9a-f]*}}
|
|
; CHECK-NEXT: DW_IDX_parent: <parent not indexed>
|
|
; CHECK-NEXT: }
|
|
|
|
; VERIFY: No errors.
|
|
|
|
@foobar = common dso_local global ptr null, align 8, !dbg !0
|
|
@someA_B = common dso_local global ptr null, align 8, !dbg !18
|
|
|
|
!llvm.dbg.cu = !{!2}
|
|
!llvm.module.flags = !{!7, !8, !9}
|
|
!llvm.ident = !{!10}
|
|
|
|
!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
|
|
!1 = distinct !DIGlobalVariable(name: "foobar", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)
|
|
!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 7.0.0 (trunk 325496) (llvm/trunk 325732)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)
|
|
!3 = !DIFile(filename: "/tmp/cu1.c", directory: "/tmp")
|
|
!4 = !{}
|
|
!5 = !{!0, !18}
|
|
!6 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64)
|
|
!7 = !{i32 2, !"Dwarf Version", i32 4}
|
|
!8 = !{i32 2, !"Debug Info Version", i32 3}
|
|
!9 = !{i32 1, !"wchar_size", i32 4}
|
|
!10 = !{!"clang version 7.0.0 (trunk 325496) (llvm/trunk 325732)"}
|
|
|
|
!13 = !{}
|
|
!15 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "B", scope: !16, file: !3, line: 3, size: 8, elements: !13, identifier: "type_A::B")
|
|
!16 = !DICompositeType(tag: DW_TAG_structure_type, name: "A", file: !3, line: 1, size: 8, flags: DIFlagFwdDecl, identifier: "type_A")
|
|
!17 = distinct !DIGlobalVariable(name: "someA_B", scope: !2, file: !3, line: 1, type: !15, isLocal: false, isDefinition: true)
|
|
!18 = !DIGlobalVariableExpression(var: !17, expr: !DIExpression())
|