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a4610c7182
This adds support for DW_IDX_parent. If DIE has a parent then DW_IDX_parent in Entry will point to Entry for that parent DIE. Otherwise it will have DW_FORM_flag_present in abbrev. Which takes zero space in Entry. This came from https://discourse.llvm.org/t/rfc-improve-dwarf-5-debug-names-type-lookup-parsing-speed/74151
208 lines
7.6 KiB
Plaintext
208 lines
7.6 KiB
Plaintext
; RUN: rm -rf %t
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; RUN: mkdir %t
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; RUN: cd %t
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; RUN: llvm-mc -dwarf-version=5 -filetype=obj -triple x86_64-unknown-linux %p/Inputs/dwarf5-df-dualcu-main.s \
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; RUN: -split-dwarf-file=main.dwo -o main.o
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; RUN: llvm-mc -dwarf-version=5 -filetype=obj -triple x86_64-unknown-linux %p/Inputs/dwarf5-df-dualcu-helper.s \
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; RUN: -split-dwarf-file=helper.dwo -o helper.o
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; RUN: %clang %cflags -gdwarf-5 -gsplit-dwarf=split main.o helper.o -o main.exe -fno-pic -no-pie
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; RUN: llvm-bolt main.exe -o main.exe.bolt --update-debug-sections --create-debug-names-section=true
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; RUN: llvm-dwarfdump --debug-info --debug-names main.exe.bolt > %t/foo.txt
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; RUN: cat %t/foo.txt | FileCheck -check-prefix=BOLT %s
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;; Tests BOLT generates .debug_names with --create-debug-names-section.
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;; Also applicable when binary has split dwarf CUs that do not contribute to .debug_names pre-bolt.
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; BOLT: [[OFFSET1:0x[0-9a-f]*]]: Compile Unit
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; BOLT: [[OFFSET2:0x[0-9a-f]*]]: Compile Unit
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; BOLT: Name Index @ 0x0 {
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; BOLT-NEXT: Header {
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; BOLT-NEXT: Length: 0x14E
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; BOLT-NEXT: Format: DWARF32
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; BOLT-NEXT: Version: 5
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; BOLT-NEXT: CU count: 2
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; BOLT-NEXT: Local TU count: 0
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; BOLT-NEXT: Foreign TU count: 0
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; BOLT-NEXT: Bucket count: 11
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; BOLT-NEXT: Name count: 11
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; BOLT-NEXT: Abbreviations table size: 0x1F
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; BOLT-NEXT: Augmentation: 'BOLT'
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; BOLT-NEXT: }
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; BOLT-NEXT: Compilation Unit offsets [
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; BOLT-NEXT: CU[0]: [[OFFSET1]]
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; BOLT-NEXT: CU[1]: [[OFFSET2]]
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; BOLT-NEXT: ]
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; BOLT-NEXT: Abbreviations [
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; BOLT-NEXT: Abbreviation [[ABBREV1:0x[0-9a-f]*]] {
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; BOLT-NEXT: Tag: DW_TAG_variable
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; BOLT-NEXT: DW_IDX_compile_unit: DW_FORM_data1
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; BOLT-NEXT: DW_IDX_die_offset: DW_FORM_ref4
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; BOLT-NEXT: DW_IDX_parent: DW_FORM_flag_present
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; BOLT-NEXT: }
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; BOLT-NEXT: Abbreviation [[ABBREV2:0x[0-9a-f]*]] {
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; BOLT-NEXT: Tag: DW_TAG_base_type
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; BOLT-NEXT: DW_IDX_compile_unit: DW_FORM_data1
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; BOLT-NEXT: DW_IDX_die_offset: DW_FORM_ref4
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; BOLT-NEXT: DW_IDX_parent: DW_FORM_flag_present
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; BOLT-NEXT: }
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; BOLT-NEXT: Abbreviation [[ABBREV3:0x[0-9a-f]*]] {
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; BOLT-NEXT: Tag: DW_TAG_subprogram
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; BOLT-NEXT: DW_IDX_compile_unit: DW_FORM_data1
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; BOLT-NEXT: DW_IDX_die_offset: DW_FORM_ref4
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; BOLT-NEXT: DW_IDX_parent: DW_FORM_flag_present
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; BOLT-NEXT: }
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; BOLT-NEXT: ]
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; BOLT-NEXT: Bucket 0 [
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; BOLT-NEXT: Name 1 {
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; BOLT-NEXT: Hash: 0x2B61E
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; BOLT-NEXT: String: {{.+}} "y"
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; BOLT-NEXT: Entry @ {{.+}} {
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; BOLT-NEXT: Abbrev: [[ABBREV1]]
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; BOLT-NEXT: Tag: DW_TAG_variable
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; BOLT-NEXT: DW_IDX_compile_unit: 0x00
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; BOLT-NEXT: DW_IDX_die_offset: 0x00000029
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; BOLT-NEXT: DW_IDX_parent: <parent not indexed>
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; BOLT-NEXT: }
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; BOLT-NEXT: }
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; BOLT-NEXT: Name 2 {
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; BOLT-NEXT: Hash: 0x7C952063
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; BOLT-NEXT: String: {{.+}} "char"
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; BOLT-NEXT: Entry @ {{.+}} {
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; BOLT-NEXT: Abbrev: [[ABBREV2]]
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; BOLT-NEXT: Tag: DW_TAG_base_type
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; BOLT-NEXT: DW_IDX_compile_unit: 0x00
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; BOLT-NEXT: DW_IDX_die_offset: 0x0000008c
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; BOLT-NEXT: DW_IDX_parent: <parent not indexed>
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; BOLT-NEXT: }
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; BOLT-NEXT: }
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; BOLT-NEXT: ]
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; BOLT-NEXT: Bucket 1 [
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; BOLT-NEXT: Name 3 {
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; BOLT-NEXT: Hash: 0x2B609
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; BOLT-NEXT: String: {{.+}} "d"
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; BOLT-NEXT: Entry @ {{.+}} {
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; BOLT-NEXT: Abbrev: [[ABBREV1]]
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; BOLT-NEXT: Tag: DW_TAG_variable
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; BOLT-NEXT: DW_IDX_compile_unit: 0x01
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; BOLT-NEXT: DW_IDX_die_offset: 0x00000029
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; BOLT-NEXT: DW_IDX_parent: <parent not indexed>
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; BOLT-NEXT: }
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; BOLT-NEXT: }
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; BOLT-NEXT: Name 4 {
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; BOLT-NEXT: Hash: 0x2B61F
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; BOLT-NEXT: String: {{.+}} "z"
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; BOLT-NEXT: Entry @ {{.+}} {
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; BOLT-NEXT: Abbrev: [[ABBREV1]]
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; BOLT-NEXT: Tag: DW_TAG_variable
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; BOLT-NEXT: DW_IDX_compile_unit: 0x01
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; BOLT-NEXT: DW_IDX_die_offset: 0x0000001a
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; BOLT-NEXT: DW_IDX_parent: <parent not indexed>
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; BOLT-NEXT: }
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; BOLT-NEXT: }
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; BOLT-NEXT: ]
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; BOLT-NEXT: Bucket 2 [
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; BOLT-NEXT: Name 5 {
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; BOLT-NEXT: Hash: 0xB88B3D2
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; BOLT-NEXT: String: {{.+}} "use"
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; BOLT-NEXT: Entry @ {{.+}} {
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; BOLT-NEXT: Abbrev: [[ABBREV3]]
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; BOLT-NEXT: Tag: DW_TAG_subprogram
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; BOLT-NEXT: DW_IDX_compile_unit: 0x00
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; BOLT-NEXT: DW_IDX_die_offset: 0x00000034
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; BOLT-NEXT: DW_IDX_parent: <parent not indexed>
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; BOLT-NEXT: }
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; BOLT-NEXT: }
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; BOLT-NEXT: ]
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; BOLT-NEXT: Bucket 3 [
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; BOLT-NEXT: Name 6 {
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; BOLT-NEXT: Hash: 0x45A3B006
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; BOLT-NEXT: String: {{.+}} "_Z6helperii"
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; BOLT-NEXT: Entry @ {{.+}} {
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; BOLT-NEXT: Abbrev: [[ABBREV3]]
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; BOLT-NEXT: Tag: DW_TAG_subprogram
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; BOLT-NEXT: DW_IDX_compile_unit: 0x01
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; BOLT-NEXT: DW_IDX_die_offset: 0x00000034
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; BOLT-NEXT: DW_IDX_parent: <parent not indexed>
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; BOLT-NEXT: }
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; BOLT-NEXT: }
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; BOLT-NEXT: ]
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; BOLT-NEXT: Bucket 4 [
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; BOLT-NEXT: EMPTY
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; BOLT-NEXT: ]
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; BOLT-NEXT: Bucket 5 [
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; BOLT-NEXT: Name 7 {
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; BOLT-NEXT: Hash: 0x8C06E589
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; BOLT-NEXT: String: {{.+}} "_Z3usePiS_"
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; BOLT-NEXT: Entry @ {{.+}} {
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; BOLT-NEXT: Abbrev: [[ABBREV3]]
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; BOLT-NEXT: Tag: DW_TAG_subprogram
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; BOLT-NEXT: DW_IDX_compile_unit: 0x00
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; BOLT-NEXT: DW_IDX_die_offset: 0x00000034
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; BOLT-NEXT: DW_IDX_parent: <parent not indexed>
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; BOLT-NEXT: }
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; BOLT-NEXT: }
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; BOLT-NEXT: ]
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; BOLT-NEXT: Bucket 6 [
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; BOLT-NEXT: Name 8 {
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; BOLT-NEXT: Hash: 0xB888030
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; BOLT-NEXT: String: {{.+}} "int"
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; BOLT-NEXT: Entry @ {{.+}} {
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; BOLT-NEXT: Abbrev: [[ABBREV2]]
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; BOLT-NEXT: Tag: DW_TAG_base_type
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; BOLT-NEXT: DW_IDX_compile_unit: 0x00
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; BOLT-NEXT: DW_IDX_die_offset: 0x00000025
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; BOLT-NEXT: DW_IDX_parent: <parent not indexed>
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; BOLT-NEXT: }
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; BOLT-NEXT: Entry @ {{.+}} {
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; BOLT-NEXT: Abbrev: [[ABBREV2]]
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; BOLT-NEXT: Tag: DW_TAG_base_type
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; BOLT-NEXT: DW_IDX_compile_unit: 0x01
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; BOLT-NEXT: DW_IDX_die_offset: 0x00000025
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; BOLT-NEXT: DW_IDX_parent: <parent not indexed>
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; BOLT-NEXT: }
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; BOLT-NEXT: }
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; BOLT-NEXT: ]
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; BOLT-NEXT: Bucket 7 [
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; BOLT-NEXT: Name 9 {
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; BOLT-NEXT: Hash: 0x1D853E5
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; BOLT-NEXT: String: {{.+}} "helper"
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; BOLT-NEXT: Entry @ {{.+}} {
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; BOLT-NEXT: Abbrev: [[ABBREV3]]
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; BOLT-NEXT: Tag: DW_TAG_subprogram
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; BOLT-NEXT: DW_IDX_compile_unit: 0x01
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; BOLT-NEXT: DW_IDX_die_offset: 0x00000034
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; BOLT-NEXT: DW_IDX_parent: <parent not indexed>
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; BOLT-NEXT: }
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; BOLT-NEXT: }
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; BOLT-NEXT: Name 10 {
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; BOLT-NEXT: Hash: 0x7C9A7F6A
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; BOLT-NEXT: String: {{.+}} "main"
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; BOLT-NEXT: Entry @ {{.+}} {
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; BOLT-NEXT: Abbrev: [[ABBREV3]]
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; BOLT-NEXT: Tag: DW_TAG_subprogram
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; BOLT-NEXT: DW_IDX_compile_unit: 0x00
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; BOLT-NEXT: DW_IDX_die_offset: 0x00000057
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; BOLT-NEXT: DW_IDX_parent: <parent not indexed>
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; BOLT-NEXT: }
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; BOLT-NEXT: }
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; BOLT-NEXT: ]
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; BOLT-NEXT: Bucket 8 [
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; BOLT-NEXT: EMPTY
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; BOLT-NEXT: ]
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; BOLT-NEXT: Bucket 9 [
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; BOLT-NEXT: EMPTY
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; BOLT-NEXT: ]
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; BOLT-NEXT: Bucket 10 [
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; BOLT-NEXT: Name 11 {
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; BOLT-NEXT: Hash: 0x2B61D
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; BOLT-NEXT: String: {{.+}} "x"
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; BOLT-NEXT: Entry @ {{.+}} {
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; BOLT-NEXT: Abbrev: [[ABBREV1]]
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; BOLT-NEXT: Tag: DW_TAG_variable
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; BOLT-NEXT: DW_IDX_compile_unit: 0x00
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; BOLT-NEXT: DW_IDX_die_offset: 0x0000001a
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; BOLT-NEXT: DW_IDX_parent: <parent not indexed>
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; BOLT-NEXT: }
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; BOLT-NEXT: }
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; BOLT-NEXT: ]
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