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.
81 lines
3.9 KiB
LLVM
81 lines
3.9 KiB
LLVM
; RUN: llc -mtriple=x86_64 -generate-type-units -dwarf-version=5 -filetype=obj %s -o %t
|
|
; RUN: llvm-dwarfdump -debug-names %t | FileCheck %s
|
|
|
|
; Two structs that have different names but are structurally identical:
|
|
; namespace MyNamespace {
|
|
; struct MyStruct1 {
|
|
; char c1;
|
|
; };
|
|
; struct MyStruct2 {
|
|
; char c2;
|
|
; };
|
|
; } // namespace MyNamespace
|
|
; MyNamespace::MyStruct1 gv1;
|
|
; MyNamespace::MyStruct2 gv2;
|
|
|
|
; Using two TUs, this should produce DIE structures with the same offset.
|
|
; We test that accelerator table generation works with this.
|
|
|
|
; CHECK: String: {{.*}} "MyStruct2"
|
|
; CHECK-NEXT: Entry @ {{.*}} {
|
|
; CHECK-NEXT: Abbrev: [[ABBREV:0x.*]]
|
|
; CHECK-NEXT: Tag: DW_TAG_structure_type
|
|
; CHECK-NEXT: DW_IDX_type_unit: 0x01
|
|
; CHECK-NEXT: DW_IDX_die_offset: [[DieOffsetStruct:0x.*]]
|
|
; CHECK-NEXT: DW_IDX_parent: Entry @ [[Parent2:0x.*]]
|
|
; CHECK: String: {{.*}} "MyNamespace"
|
|
; CHECK-NEXT: Entry @ [[Parent1:0x.*]] {
|
|
; CHECK-NEXT: Abbrev: {{.*}}
|
|
; CHECK-NEXT: Tag: DW_TAG_namespace
|
|
; CHECK-NEXT: DW_IDX_type_unit: 0x00
|
|
; CHECK-NEXT: DW_IDX_die_offset: [[DieOffsetNamespace:0x.*]]
|
|
; CHECK-NEXT: DW_IDX_parent: <parent not indexed>
|
|
; CHECK-NEXT: }
|
|
; CHECK-NEXT: Entry @ [[Parent2]] {
|
|
; CHECK-NEXT: Abbrev: {{.*}}
|
|
; CHECK-NEXT: Tag: DW_TAG_namespace
|
|
; CHECK-NEXT: DW_IDX_type_unit: 0x01
|
|
; CHECK-NEXT: DW_IDX_die_offset: [[DieOffsetNamespace:0x.*]]
|
|
; CHECK-NEXT: DW_IDX_parent: <parent not indexed>
|
|
; CHECK-NEXT: }
|
|
; CHECK: String: {{.*}} "MyStruct1"
|
|
; CHECK-NEXT: Entry @ {{.*}} {
|
|
; CHECK-NEXT: Abbrev: [[ABBREV]]
|
|
; CHECK-NEXT: Tag: DW_TAG_structure_type
|
|
; CHECK-NEXT: DW_IDX_type_unit: 0x00
|
|
; CHECK-NEXT: DW_IDX_die_offset: [[DieOffsetStruct:0x.*]]
|
|
; CHECK-NEXT: DW_IDX_parent: Entry @ [[Parent1]]
|
|
|
|
|
|
%"struct.MyNamespace::MyStruct1" = type { i8 }
|
|
%"struct.MyNamespace::MyStruct2" = type { i8 }
|
|
|
|
@gv1 = dso_local global %"struct.MyNamespace::MyStruct1" zeroinitializer, align 1, !dbg !0
|
|
@gv2 = dso_local global %"struct.MyNamespace::MyStruct2" zeroinitializer, align 1, !dbg !5
|
|
|
|
!llvm.dbg.cu = !{!2}
|
|
!llvm.module.flags = !{!15, !16, !17, !18, !19}
|
|
!llvm.ident = !{!20}
|
|
|
|
!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
|
|
!1 = distinct !DIGlobalVariable(name: "gv1", scope: !2, file: !3, line: 10, type: !12, isLocal: false, isDefinition: true)
|
|
!2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !3, producer: "blah", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, globals: !4, splitDebugInlining: false)
|
|
!3 = !DIFile(filename: "two_tus.cpp", directory: "blah", checksumkind: CSK_MD5, checksum: "69acf04f32811fe7fd35449b58c3f5b1")
|
|
!4 = !{!0, !5}
|
|
!5 = !DIGlobalVariableExpression(var: !6, expr: !DIExpression())
|
|
!6 = distinct !DIGlobalVariable(name: "gv2", scope: !2, file: !3, line: 11, type: !7, isLocal: false, isDefinition: true)
|
|
!7 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "MyStruct2", scope: !8, file: !3, line: 5, size: 8, flags: DIFlagTypePassByValue, elements: !9, identifier: "_ZTSN11MyNamespace9MyStruct2E")
|
|
!8 = !DINamespace(name: "MyNamespace", scope: null)
|
|
!9 = !{!10}
|
|
!10 = !DIDerivedType(tag: DW_TAG_member, name: "c2", scope: !7, file: !3, line: 6, baseType: !11, size: 8)
|
|
!11 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
|
|
!12 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "MyStruct1", scope: !8, file: !3, line: 2, size: 8, flags: DIFlagTypePassByValue, elements: !13, identifier: "_ZTSN11MyNamespace9MyStruct1E")
|
|
!13 = !{!14}
|
|
!14 = !DIDerivedType(tag: DW_TAG_member, name: "c1", scope: !12, file: !3, line: 3, baseType: !11, size: 8)
|
|
!15 = !{i32 7, !"Dwarf Version", i32 5}
|
|
!16 = !{i32 2, !"Debug Info Version", i32 3}
|
|
!17 = !{i32 1, !"wchar_size", i32 4}
|
|
!18 = !{i32 7, !"uwtable", i32 2}
|
|
!19 = !{i32 7, !"frame-pointer", i32 2}
|
|
!20 = !{!"blah"}
|