[llvm] [BOLT][DWWARF][NFC] Fix foreign TU index with local TUs (PR #84594)
Alexander Yermolovich via llvm-commits
llvm-commits at lists.llvm.org
Fri Mar 8 17:17:46 PST 2024
https://github.com/ayermolo created https://github.com/llvm/llvm-project/pull/84594
The foreign TU list immediately follows the local TU list and they both use the same index, so that if there are N local TU entries, the index for the first foreign TU is N.
Changed so that the size of local TU is accounted for when setting foreign TU index.
>From 5c8f423540c229224b82a6d0af3c6fb592483218 Mon Sep 17 00:00:00 2001
From: Alexander Yermolovich <ayermolo at meta.com>
Date: Fri, 8 Mar 2024 17:06:30 -0800
Subject: [PATCH] [BOLT][DWWARF][NFC] Fix foreign TU index with local TUs
The foreign TU list immediately follows the local TU list and they both use the
same index, so that if there are N local TU entries, the index for the first
foreign TU is N.
Changed so that the size of local TU is accounted for when setting foreign TU
index.
---
bolt/lib/Core/DebugNames.cpp | 7 +-
.../dwarf5-debug-names-ftu-ltu-mix-helper.s | 314 +++++++++++
.../dwarf5-debug-names-ftu-ltu-mix-helper1.s | 315 +++++++++++
.../dwarf5-df-debug-names-ftu-ltu-mix-main.s | 505 ++++++++++++++++++
...warf5-df-main-debug-names-ftu-ltu-mix.test | 56 ++
5 files changed, 1196 insertions(+), 1 deletion(-)
create mode 100644 bolt/test/X86/Inputs/dwarf5-debug-names-ftu-ltu-mix-helper.s
create mode 100644 bolt/test/X86/Inputs/dwarf5-debug-names-ftu-ltu-mix-helper1.s
create mode 100644 bolt/test/X86/Inputs/dwarf5-df-debug-names-ftu-ltu-mix-main.s
create mode 100644 bolt/test/X86/dwarf5-df-main-debug-names-ftu-ltu-mix.test
diff --git a/bolt/lib/Core/DebugNames.cpp b/bolt/lib/Core/DebugNames.cpp
index 1a7792afbbd941..384e63695dfdc5 100644
--- a/bolt/lib/Core/DebugNames.cpp
+++ b/bolt/lib/Core/DebugNames.cpp
@@ -345,8 +345,13 @@ void DWARF5AcceleratorTable::finalize() {
std::optional<DWARF5AccelTable::UnitIndexAndEncoding>
DWARF5AcceleratorTable::getIndexForEntry(
const BOLTDWARF5AccelTableData &Value) const {
+ // The foreign TU list immediately follows the local TU list and they both
+ // use the same index, so that if there are N local TU entries, the index for
+ // the first foreign TU is N.
if (Value.isTU())
- return {{Value.getUnitID(), {dwarf::DW_IDX_type_unit, TUIndexForm}}};
+ return {{(Value.getSecondUnitID() ? (unsigned)LocalTUList.size() : 0) +
+ Value.getUnitID(),
+ {dwarf::DW_IDX_type_unit, TUIndexForm}}};
if (CUList.size() > 1)
return {{Value.getUnitID(), {dwarf::DW_IDX_compile_unit, CUIndexForm}}};
return std::nullopt;
diff --git a/bolt/test/X86/Inputs/dwarf5-debug-names-ftu-ltu-mix-helper.s b/bolt/test/X86/Inputs/dwarf5-debug-names-ftu-ltu-mix-helper.s
new file mode 100644
index 00000000000000..68eee45ec98330
--- /dev/null
+++ b/bolt/test/X86/Inputs/dwarf5-debug-names-ftu-ltu-mix-helper.s
@@ -0,0 +1,314 @@
+# struct AMono {
+# int x;
+# };
+#
+# AMono globalMono;
+# # clang++ -g2 -gdwarf-5 -gpubnames -S -fdebug-types-section -o
+
+ .text
+ .file "helper.cpp"
+ .file 0 "/home" "helper.cpp" md5 0x3c0ac73d7b074961c6e8202230a76228
+ .section .debug_info,"G", at progbits,6412503741467814911,comdat
+.Ltu_begin0:
+ .long .Ldebug_info_end0-.Ldebug_info_start0 # Length of Unit
+.Ldebug_info_start0:
+ .short 5 # DWARF version number
+ .byte 2 # DWARF Unit Type
+ .byte 8 # Address Size (in bytes)
+ .long .debug_abbrev # Offset Into Abbrev. Section
+ .quad 6412503741467814911 # Type Signature
+ .long 35 # Type DIE Offset
+ .byte 1 # Abbrev [1] 0x18:0x20 DW_TAG_type_unit
+ .short 33 # DW_AT_language
+ .long .Lline_table_start0 # DW_AT_stmt_list
+ .long .Lstr_offsets_base0 # DW_AT_str_offsets_base
+ .byte 2 # Abbrev [2] 0x23:0x10 DW_TAG_structure_type
+ .byte 5 # DW_AT_calling_convention
+ .byte 6 # DW_AT_name
+ .byte 4 # DW_AT_byte_size
+ .byte 0 # DW_AT_decl_file
+ .byte 1 # DW_AT_decl_line
+ .byte 3 # Abbrev [3] 0x29:0x9 DW_TAG_member
+ .byte 4 # DW_AT_name
+ .long 51 # DW_AT_type
+ .byte 0 # DW_AT_decl_file
+ .byte 2 # DW_AT_decl_line
+ .byte 0 # DW_AT_data_member_location
+ .byte 0 # End Of Children Mark
+ .byte 4 # Abbrev [4] 0x33:0x4 DW_TAG_base_type
+ .byte 5 # DW_AT_name
+ .byte 5 # DW_AT_encoding
+ .byte 4 # DW_AT_byte_size
+ .byte 0 # End Of Children Mark
+.Ldebug_info_end0:
+ .type globalMono, at object # @globalMono
+ .bss
+ .globl globalMono
+ .p2align 2, 0x0
+globalMono:
+ .zero 4
+ .size globalMono, 4
+
+ .section .debug_abbrev,"", at progbits
+ .byte 1 # Abbreviation Code
+ .byte 65 # DW_TAG_type_unit
+ .byte 1 # DW_CHILDREN_yes
+ .byte 19 # DW_AT_language
+ .byte 5 # DW_FORM_data2
+ .byte 16 # DW_AT_stmt_list
+ .byte 23 # DW_FORM_sec_offset
+ .byte 114 # DW_AT_str_offsets_base
+ .byte 23 # DW_FORM_sec_offset
+ .byte 0 # EOM(1)
+ .byte 0 # EOM(2)
+ .byte 2 # Abbreviation Code
+ .byte 19 # DW_TAG_structure_type
+ .byte 1 # DW_CHILDREN_yes
+ .byte 54 # DW_AT_calling_convention
+ .byte 11 # DW_FORM_data1
+ .byte 3 # DW_AT_name
+ .byte 37 # DW_FORM_strx1
+ .byte 11 # DW_AT_byte_size
+ .byte 11 # DW_FORM_data1
+ .byte 58 # DW_AT_decl_file
+ .byte 11 # DW_FORM_data1
+ .byte 59 # DW_AT_decl_line
+ .byte 11 # DW_FORM_data1
+ .byte 0 # EOM(1)
+ .byte 0 # EOM(2)
+ .byte 3 # Abbreviation Code
+ .byte 13 # DW_TAG_member
+ .byte 0 # DW_CHILDREN_no
+ .byte 3 # DW_AT_name
+ .byte 37 # DW_FORM_strx1
+ .byte 73 # DW_AT_type
+ .byte 19 # DW_FORM_ref4
+ .byte 58 # DW_AT_decl_file
+ .byte 11 # DW_FORM_data1
+ .byte 59 # DW_AT_decl_line
+ .byte 11 # DW_FORM_data1
+ .byte 56 # DW_AT_data_member_location
+ .byte 11 # DW_FORM_data1
+ .byte 0 # EOM(1)
+ .byte 0 # EOM(2)
+ .byte 4 # Abbreviation Code
+ .byte 36 # DW_TAG_base_type
+ .byte 0 # DW_CHILDREN_no
+ .byte 3 # DW_AT_name
+ .byte 37 # DW_FORM_strx1
+ .byte 62 # DW_AT_encoding
+ .byte 11 # DW_FORM_data1
+ .byte 11 # DW_AT_byte_size
+ .byte 11 # DW_FORM_data1
+ .byte 0 # EOM(1)
+ .byte 0 # EOM(2)
+ .byte 5 # Abbreviation Code
+ .byte 17 # DW_TAG_compile_unit
+ .byte 1 # DW_CHILDREN_yes
+ .byte 37 # DW_AT_producer
+ .byte 37 # DW_FORM_strx1
+ .byte 19 # DW_AT_language
+ .byte 5 # DW_FORM_data2
+ .byte 3 # DW_AT_name
+ .byte 37 # DW_FORM_strx1
+ .byte 114 # DW_AT_str_offsets_base
+ .byte 23 # DW_FORM_sec_offset
+ .byte 16 # DW_AT_stmt_list
+ .byte 23 # DW_FORM_sec_offset
+ .byte 27 # DW_AT_comp_dir
+ .byte 37 # DW_FORM_strx1
+ .byte 115 # DW_AT_addr_base
+ .byte 23 # DW_FORM_sec_offset
+ .byte 0 # EOM(1)
+ .byte 0 # EOM(2)
+ .byte 6 # Abbreviation Code
+ .byte 52 # DW_TAG_variable
+ .byte 0 # DW_CHILDREN_no
+ .byte 3 # DW_AT_name
+ .byte 37 # DW_FORM_strx1
+ .byte 73 # DW_AT_type
+ .byte 19 # DW_FORM_ref4
+ .byte 63 # DW_AT_external
+ .byte 25 # DW_FORM_flag_present
+ .byte 58 # DW_AT_decl_file
+ .byte 11 # DW_FORM_data1
+ .byte 59 # DW_AT_decl_line
+ .byte 11 # DW_FORM_data1
+ .byte 2 # DW_AT_location
+ .byte 24 # DW_FORM_exprloc
+ .byte 0 # EOM(1)
+ .byte 0 # EOM(2)
+ .byte 7 # Abbreviation Code
+ .byte 19 # DW_TAG_structure_type
+ .byte 0 # DW_CHILDREN_no
+ .byte 60 # DW_AT_declaration
+ .byte 25 # DW_FORM_flag_present
+ .byte 105 # DW_AT_signature
+ .byte 32 # DW_FORM_ref_sig8
+ .byte 0 # EOM(1)
+ .byte 0 # EOM(2)
+ .byte 0 # EOM(3)
+ .section .debug_info,"", at progbits
+.Lcu_begin0:
+ .long .Ldebug_info_end1-.Ldebug_info_start1 # Length of Unit
+.Ldebug_info_start1:
+ .short 5 # DWARF version number
+ .byte 1 # DWARF Unit Type
+ .byte 8 # Address Size (in bytes)
+ .long .debug_abbrev # Offset Into Abbrev. Section
+ .byte 5 # Abbrev [5] 0xc:0x27 DW_TAG_compile_unit
+ .byte 0 # DW_AT_producer
+ .short 33 # DW_AT_language
+ .byte 1 # DW_AT_name
+ .long .Lstr_offsets_base0 # DW_AT_str_offsets_base
+ .long .Lline_table_start0 # DW_AT_stmt_list
+ .byte 2 # DW_AT_comp_dir
+ .long .Laddr_table_base0 # DW_AT_addr_base
+ .byte 6 # Abbrev [6] 0x1e:0xb DW_TAG_variable
+ .byte 3 # DW_AT_name
+ .long 41 # DW_AT_type
+ # DW_AT_external
+ .byte 0 # DW_AT_decl_file
+ .byte 5 # DW_AT_decl_line
+ .byte 2 # DW_AT_location
+ .byte 161
+ .byte 0
+ .byte 7 # Abbrev [7] 0x29:0x9 DW_TAG_structure_type
+ # DW_AT_declaration
+ .quad 6412503741467814911 # DW_AT_signature
+ .byte 0 # End Of Children Mark
+.Ldebug_info_end1:
+ .section .debug_str_offsets,"", at progbits
+ .long 32 # Length of String Offsets Set
+ .short 5
+ .short 0
+.Lstr_offsets_base0:
+ .section .debug_str,"MS", at progbits,1
+.Linfo_string0:
+ .asciz "clang version 19.0.0git (git at github.com:llvm/llvm-project.git ced1fac8a32e35b63733bda27c7f5b9a2b635403)" # string offset=0
+.Linfo_string1:
+ .asciz "helper.cpp" # string offset=104
+.Linfo_string2:
+ .asciz "/home" # string offset=115
+.Linfo_string3:
+ .asciz "globalMono" # string offset=153
+.Linfo_string4:
+ .asciz "AMono" # string offset=164
+.Linfo_string5:
+ .asciz "x" # string offset=170
+.Linfo_string6:
+ .asciz "int" # string offset=172
+ .section .debug_str_offsets,"", at progbits
+ .long .Linfo_string0
+ .long .Linfo_string1
+ .long .Linfo_string2
+ .long .Linfo_string3
+ .long .Linfo_string5
+ .long .Linfo_string6
+ .long .Linfo_string4
+ .section .debug_addr,"", at progbits
+ .long .Ldebug_addr_end0-.Ldebug_addr_start0 # Length of contribution
+.Ldebug_addr_start0:
+ .short 5 # DWARF version number
+ .byte 8 # Address size
+ .byte 0 # Segment selector size
+.Laddr_table_base0:
+ .quad globalMono
+.Ldebug_addr_end0:
+ .section .debug_names,"", at progbits
+ .long .Lnames_end0-.Lnames_start0 # Header: unit length
+.Lnames_start0:
+ .short 5 # Header: version
+ .short 0 # Header: padding
+ .long 1 # Header: compilation unit count
+ .long 1 # Header: local type unit count
+ .long 0 # Header: foreign type unit count
+ .long 3 # Header: bucket count
+ .long 3 # Header: name count
+ .long .Lnames_abbrev_end0-.Lnames_abbrev_start0 # Header: abbreviation table size
+ .long 8 # Header: augmentation string size
+ .ascii "LLVM0700" # Header: augmentation string
+ .long .Lcu_begin0 # Compilation unit 0
+ .long .Ltu_begin0 # Type unit 0
+ .long 0 # Bucket 0
+ .long 0 # Bucket 1
+ .long 1 # Bucket 2
+ .long 193495088 # Hash in Bucket 2
+ .long 253228319 # Hash in Bucket 2
+ .long -857151761 # Hash in Bucket 2
+ .long .Linfo_string6 # String in Bucket 2: int
+ .long .Linfo_string4 # String in Bucket 2: AMono
+ .long .Linfo_string3 # String in Bucket 2: globalMono
+ .long .Lnames1-.Lnames_entries0 # Offset in Bucket 2
+ .long .Lnames0-.Lnames_entries0 # Offset in Bucket 2
+ .long .Lnames2-.Lnames_entries0 # Offset in Bucket 2
+.Lnames_abbrev_start0:
+ .byte 1 # Abbrev code
+ .byte 36 # DW_TAG_base_type
+ .byte 2 # DW_IDX_type_unit
+ .byte 11 # DW_FORM_data1
+ .byte 3 # DW_IDX_die_offset
+ .byte 19 # DW_FORM_ref4
+ .byte 4 # DW_IDX_parent
+ .byte 25 # DW_FORM_flag_present
+ .byte 0 # End of abbrev
+ .byte 0 # End of abbrev
+ .byte 2 # Abbrev code
+ .byte 19 # DW_TAG_structure_type
+ .byte 2 # DW_IDX_type_unit
+ .byte 11 # DW_FORM_data1
+ .byte 3 # DW_IDX_die_offset
+ .byte 19 # DW_FORM_ref4
+ .byte 4 # DW_IDX_parent
+ .byte 25 # DW_FORM_flag_present
+ .byte 0 # End of abbrev
+ .byte 0 # End of abbrev
+ .byte 3 # Abbrev code
+ .byte 19 # DW_TAG_structure_type
+ .byte 3 # DW_IDX_die_offset
+ .byte 19 # DW_FORM_ref4
+ .byte 4 # DW_IDX_parent
+ .byte 25 # DW_FORM_flag_present
+ .byte 0 # End of abbrev
+ .byte 0 # End of abbrev
+ .byte 4 # Abbrev code
+ .byte 52 # DW_TAG_variable
+ .byte 3 # DW_IDX_die_offset
+ .byte 19 # DW_FORM_ref4
+ .byte 4 # DW_IDX_parent
+ .byte 25 # DW_FORM_flag_present
+ .byte 0 # End of abbrev
+ .byte 0 # End of abbrev
+ .byte 0 # End of abbrev list
+.Lnames_abbrev_end0:
+.Lnames_entries0:
+.Lnames1:
+.L1:
+ .byte 1 # Abbreviation code
+ .byte 0 # DW_IDX_type_unit
+ .long 51 # DW_IDX_die_offset
+ .byte 0 # DW_IDX_parent
+ # End of list: int
+.Lnames0:
+.L2:
+ .byte 2 # Abbreviation code
+ .byte 0 # DW_IDX_type_unit
+ .long 35 # DW_IDX_die_offset
+.L3: # DW_IDX_parent
+ .byte 3 # Abbreviation code
+ .long 41 # DW_IDX_die_offset
+ .byte 0 # DW_IDX_parent
+ # End of list: AMono
+.Lnames2:
+.L0:
+ .byte 4 # Abbreviation code
+ .long 30 # DW_IDX_die_offset
+ .byte 0 # DW_IDX_parent
+ # End of list: globalMono
+ .p2align 2, 0x0
+.Lnames_end0:
+ .ident "clang version 19.0.0git (git at github.com:llvm/llvm-project.git ced1fac8a32e35b63733bda27c7f5b9a2b635403)"
+ .section ".note.GNU-stack","", at progbits
+ .addrsig
+ .section .debug_line,"", at progbits
+.Lline_table_start0:
diff --git a/bolt/test/X86/Inputs/dwarf5-debug-names-ftu-ltu-mix-helper1.s b/bolt/test/X86/Inputs/dwarf5-debug-names-ftu-ltu-mix-helper1.s
new file mode 100644
index 00000000000000..8b28c19dc87de8
--- /dev/null
+++ b/bolt/test/X86/Inputs/dwarf5-debug-names-ftu-ltu-mix-helper1.s
@@ -0,0 +1,315 @@
+# struct BMono {
+# int x;
+# };
+#
+# BMono globalMono1;
+# clang++ -g2 -gdwarf-5 -gpubnames -S -fdebug-types-section -o
+
+
+ .text
+ .file "helper1.cpp"
+ .file 0 "/home" "helper1.cpp" md5 0x1fdaf911330b73495aed962bc02cfb3a
+ .section .debug_info,"G", at progbits,5884764266900841573,comdat
+.Ltu_begin0:
+ .long .Ldebug_info_end0-.Ldebug_info_start0 # Length of Unit
+.Ldebug_info_start0:
+ .short 5 # DWARF version number
+ .byte 2 # DWARF Unit Type
+ .byte 8 # Address Size (in bytes)
+ .long .debug_abbrev # Offset Into Abbrev. Section
+ .quad 5884764266900841573 # Type Signature
+ .long 35 # Type DIE Offset
+ .byte 1 # Abbrev [1] 0x18:0x20 DW_TAG_type_unit
+ .short 33 # DW_AT_language
+ .long .Lline_table_start0 # DW_AT_stmt_list
+ .long .Lstr_offsets_base0 # DW_AT_str_offsets_base
+ .byte 2 # Abbrev [2] 0x23:0x10 DW_TAG_structure_type
+ .byte 5 # DW_AT_calling_convention
+ .byte 6 # DW_AT_name
+ .byte 4 # DW_AT_byte_size
+ .byte 0 # DW_AT_decl_file
+ .byte 1 # DW_AT_decl_line
+ .byte 3 # Abbrev [3] 0x29:0x9 DW_TAG_member
+ .byte 4 # DW_AT_name
+ .long 51 # DW_AT_type
+ .byte 0 # DW_AT_decl_file
+ .byte 2 # DW_AT_decl_line
+ .byte 0 # DW_AT_data_member_location
+ .byte 0 # End Of Children Mark
+ .byte 4 # Abbrev [4] 0x33:0x4 DW_TAG_base_type
+ .byte 5 # DW_AT_name
+ .byte 5 # DW_AT_encoding
+ .byte 4 # DW_AT_byte_size
+ .byte 0 # End Of Children Mark
+.Ldebug_info_end0:
+ .type globalMono1, at object # @globalMono1
+ .bss
+ .globl globalMono1
+ .p2align 2, 0x0
+globalMono1:
+ .zero 4
+ .size globalMono1, 4
+
+ .section .debug_abbrev,"", at progbits
+ .byte 1 # Abbreviation Code
+ .byte 65 # DW_TAG_type_unit
+ .byte 1 # DW_CHILDREN_yes
+ .byte 19 # DW_AT_language
+ .byte 5 # DW_FORM_data2
+ .byte 16 # DW_AT_stmt_list
+ .byte 23 # DW_FORM_sec_offset
+ .byte 114 # DW_AT_str_offsets_base
+ .byte 23 # DW_FORM_sec_offset
+ .byte 0 # EOM(1)
+ .byte 0 # EOM(2)
+ .byte 2 # Abbreviation Code
+ .byte 19 # DW_TAG_structure_type
+ .byte 1 # DW_CHILDREN_yes
+ .byte 54 # DW_AT_calling_convention
+ .byte 11 # DW_FORM_data1
+ .byte 3 # DW_AT_name
+ .byte 37 # DW_FORM_strx1
+ .byte 11 # DW_AT_byte_size
+ .byte 11 # DW_FORM_data1
+ .byte 58 # DW_AT_decl_file
+ .byte 11 # DW_FORM_data1
+ .byte 59 # DW_AT_decl_line
+ .byte 11 # DW_FORM_data1
+ .byte 0 # EOM(1)
+ .byte 0 # EOM(2)
+ .byte 3 # Abbreviation Code
+ .byte 13 # DW_TAG_member
+ .byte 0 # DW_CHILDREN_no
+ .byte 3 # DW_AT_name
+ .byte 37 # DW_FORM_strx1
+ .byte 73 # DW_AT_type
+ .byte 19 # DW_FORM_ref4
+ .byte 58 # DW_AT_decl_file
+ .byte 11 # DW_FORM_data1
+ .byte 59 # DW_AT_decl_line
+ .byte 11 # DW_FORM_data1
+ .byte 56 # DW_AT_data_member_location
+ .byte 11 # DW_FORM_data1
+ .byte 0 # EOM(1)
+ .byte 0 # EOM(2)
+ .byte 4 # Abbreviation Code
+ .byte 36 # DW_TAG_base_type
+ .byte 0 # DW_CHILDREN_no
+ .byte 3 # DW_AT_name
+ .byte 37 # DW_FORM_strx1
+ .byte 62 # DW_AT_encoding
+ .byte 11 # DW_FORM_data1
+ .byte 11 # DW_AT_byte_size
+ .byte 11 # DW_FORM_data1
+ .byte 0 # EOM(1)
+ .byte 0 # EOM(2)
+ .byte 5 # Abbreviation Code
+ .byte 17 # DW_TAG_compile_unit
+ .byte 1 # DW_CHILDREN_yes
+ .byte 37 # DW_AT_producer
+ .byte 37 # DW_FORM_strx1
+ .byte 19 # DW_AT_language
+ .byte 5 # DW_FORM_data2
+ .byte 3 # DW_AT_name
+ .byte 37 # DW_FORM_strx1
+ .byte 114 # DW_AT_str_offsets_base
+ .byte 23 # DW_FORM_sec_offset
+ .byte 16 # DW_AT_stmt_list
+ .byte 23 # DW_FORM_sec_offset
+ .byte 27 # DW_AT_comp_dir
+ .byte 37 # DW_FORM_strx1
+ .byte 115 # DW_AT_addr_base
+ .byte 23 # DW_FORM_sec_offset
+ .byte 0 # EOM(1)
+ .byte 0 # EOM(2)
+ .byte 6 # Abbreviation Code
+ .byte 52 # DW_TAG_variable
+ .byte 0 # DW_CHILDREN_no
+ .byte 3 # DW_AT_name
+ .byte 37 # DW_FORM_strx1
+ .byte 73 # DW_AT_type
+ .byte 19 # DW_FORM_ref4
+ .byte 63 # DW_AT_external
+ .byte 25 # DW_FORM_flag_present
+ .byte 58 # DW_AT_decl_file
+ .byte 11 # DW_FORM_data1
+ .byte 59 # DW_AT_decl_line
+ .byte 11 # DW_FORM_data1
+ .byte 2 # DW_AT_location
+ .byte 24 # DW_FORM_exprloc
+ .byte 0 # EOM(1)
+ .byte 0 # EOM(2)
+ .byte 7 # Abbreviation Code
+ .byte 19 # DW_TAG_structure_type
+ .byte 0 # DW_CHILDREN_no
+ .byte 60 # DW_AT_declaration
+ .byte 25 # DW_FORM_flag_present
+ .byte 105 # DW_AT_signature
+ .byte 32 # DW_FORM_ref_sig8
+ .byte 0 # EOM(1)
+ .byte 0 # EOM(2)
+ .byte 0 # EOM(3)
+ .section .debug_info,"", at progbits
+.Lcu_begin0:
+ .long .Ldebug_info_end1-.Ldebug_info_start1 # Length of Unit
+.Ldebug_info_start1:
+ .short 5 # DWARF version number
+ .byte 1 # DWARF Unit Type
+ .byte 8 # Address Size (in bytes)
+ .long .debug_abbrev # Offset Into Abbrev. Section
+ .byte 5 # Abbrev [5] 0xc:0x27 DW_TAG_compile_unit
+ .byte 0 # DW_AT_producer
+ .short 33 # DW_AT_language
+ .byte 1 # DW_AT_name
+ .long .Lstr_offsets_base0 # DW_AT_str_offsets_base
+ .long .Lline_table_start0 # DW_AT_stmt_list
+ .byte 2 # DW_AT_comp_dir
+ .long .Laddr_table_base0 # DW_AT_addr_base
+ .byte 6 # Abbrev [6] 0x1e:0xb DW_TAG_variable
+ .byte 3 # DW_AT_name
+ .long 41 # DW_AT_type
+ # DW_AT_external
+ .byte 0 # DW_AT_decl_file
+ .byte 5 # DW_AT_decl_line
+ .byte 2 # DW_AT_location
+ .byte 161
+ .byte 0
+ .byte 7 # Abbrev [7] 0x29:0x9 DW_TAG_structure_type
+ # DW_AT_declaration
+ .quad 5884764266900841573 # DW_AT_signature
+ .byte 0 # End Of Children Mark
+.Ldebug_info_end1:
+ .section .debug_str_offsets,"", at progbits
+ .long 32 # Length of String Offsets Set
+ .short 5
+ .short 0
+.Lstr_offsets_base0:
+ .section .debug_str,"MS", at progbits,1
+.Linfo_string0:
+ .asciz "clang version 19.0.0git (git at github.com:llvm/llvm-project.git ced1fac8a32e35b63733bda27c7f5b9a2b635403)" # string offset=0
+.Linfo_string1:
+ .asciz "helper1.cpp" # string offset=104
+.Linfo_string2:
+ .asciz "/home" # string offset=116
+.Linfo_string3:
+ .asciz "globalMono1" # string offset=154
+.Linfo_string4:
+ .asciz "BMono" # string offset=166
+.Linfo_string5:
+ .asciz "x" # string offset=172
+.Linfo_string6:
+ .asciz "int" # string offset=174
+ .section .debug_str_offsets,"", at progbits
+ .long .Linfo_string0
+ .long .Linfo_string1
+ .long .Linfo_string2
+ .long .Linfo_string3
+ .long .Linfo_string5
+ .long .Linfo_string6
+ .long .Linfo_string4
+ .section .debug_addr,"", at progbits
+ .long .Ldebug_addr_end0-.Ldebug_addr_start0 # Length of contribution
+.Ldebug_addr_start0:
+ .short 5 # DWARF version number
+ .byte 8 # Address size
+ .byte 0 # Segment selector size
+.Laddr_table_base0:
+ .quad globalMono1
+.Ldebug_addr_end0:
+ .section .debug_names,"", at progbits
+ .long .Lnames_end0-.Lnames_start0 # Header: unit length
+.Lnames_start0:
+ .short 5 # Header: version
+ .short 0 # Header: padding
+ .long 1 # Header: compilation unit count
+ .long 1 # Header: local type unit count
+ .long 0 # Header: foreign type unit count
+ .long 3 # Header: bucket count
+ .long 3 # Header: name count
+ .long .Lnames_abbrev_end0-.Lnames_abbrev_start0 # Header: abbreviation table size
+ .long 8 # Header: augmentation string size
+ .ascii "LLVM0700" # Header: augmentation string
+ .long .Lcu_begin0 # Compilation unit 0
+ .long .Ltu_begin0 # Type unit 0
+ .long 0 # Bucket 0
+ .long 0 # Bucket 1
+ .long 1 # Bucket 2
+ .long 193495088 # Hash in Bucket 2
+ .long 254414240 # Hash in Bucket 2
+ .long 1778763008 # Hash in Bucket 2
+ .long .Linfo_string6 # String in Bucket 2: int
+ .long .Linfo_string4 # String in Bucket 2: BMono
+ .long .Linfo_string3 # String in Bucket 2: globalMono1
+ .long .Lnames1-.Lnames_entries0 # Offset in Bucket 2
+ .long .Lnames0-.Lnames_entries0 # Offset in Bucket 2
+ .long .Lnames2-.Lnames_entries0 # Offset in Bucket 2
+.Lnames_abbrev_start0:
+ .byte 1 # Abbrev code
+ .byte 36 # DW_TAG_base_type
+ .byte 2 # DW_IDX_type_unit
+ .byte 11 # DW_FORM_data1
+ .byte 3 # DW_IDX_die_offset
+ .byte 19 # DW_FORM_ref4
+ .byte 4 # DW_IDX_parent
+ .byte 25 # DW_FORM_flag_present
+ .byte 0 # End of abbrev
+ .byte 0 # End of abbrev
+ .byte 2 # Abbrev code
+ .byte 19 # DW_TAG_structure_type
+ .byte 2 # DW_IDX_type_unit
+ .byte 11 # DW_FORM_data1
+ .byte 3 # DW_IDX_die_offset
+ .byte 19 # DW_FORM_ref4
+ .byte 4 # DW_IDX_parent
+ .byte 25 # DW_FORM_flag_present
+ .byte 0 # End of abbrev
+ .byte 0 # End of abbrev
+ .byte 3 # Abbrev code
+ .byte 19 # DW_TAG_structure_type
+ .byte 3 # DW_IDX_die_offset
+ .byte 19 # DW_FORM_ref4
+ .byte 4 # DW_IDX_parent
+ .byte 25 # DW_FORM_flag_present
+ .byte 0 # End of abbrev
+ .byte 0 # End of abbrev
+ .byte 4 # Abbrev code
+ .byte 52 # DW_TAG_variable
+ .byte 3 # DW_IDX_die_offset
+ .byte 19 # DW_FORM_ref4
+ .byte 4 # DW_IDX_parent
+ .byte 25 # DW_FORM_flag_present
+ .byte 0 # End of abbrev
+ .byte 0 # End of abbrev
+ .byte 0 # End of abbrev list
+.Lnames_abbrev_end0:
+.Lnames_entries0:
+.Lnames1:
+.L1:
+ .byte 1 # Abbreviation code
+ .byte 0 # DW_IDX_type_unit
+ .long 51 # DW_IDX_die_offset
+ .byte 0 # DW_IDX_parent
+ # End of list: int
+.Lnames0:
+.L2:
+ .byte 2 # Abbreviation code
+ .byte 0 # DW_IDX_type_unit
+ .long 35 # DW_IDX_die_offset
+.L3: # DW_IDX_parent
+ .byte 3 # Abbreviation code
+ .long 41 # DW_IDX_die_offset
+ .byte 0 # DW_IDX_parent
+ # End of list: BMono
+.Lnames2:
+.L0:
+ .byte 4 # Abbreviation code
+ .long 30 # DW_IDX_die_offset
+ .byte 0 # DW_IDX_parent
+ # End of list: globalMono1
+ .p2align 2, 0x0
+.Lnames_end0:
+ .ident "clang version 19.0.0git (git at github.com:llvm/llvm-project.git ced1fac8a32e35b63733bda27c7f5b9a2b635403)"
+ .section ".note.GNU-stack","", at progbits
+ .addrsig
+ .section .debug_line,"", at progbits
+.Lline_table_start0:
diff --git a/bolt/test/X86/Inputs/dwarf5-df-debug-names-ftu-ltu-mix-main.s b/bolt/test/X86/Inputs/dwarf5-df-debug-names-ftu-ltu-mix-main.s
new file mode 100644
index 00000000000000..69f6c5a5376a02
--- /dev/null
+++ b/bolt/test/X86/Inputs/dwarf5-df-debug-names-ftu-ltu-mix-main.s
@@ -0,0 +1,505 @@
+# struct ASplit {
+# int x;
+# };
+#
+# ASplit globalSplit;
+# int main() {
+# return 0;
+# }
+# clang++ -g2 -gdwarf-5 -gpubnames -S -fdebug-types-section -gsplit-dwarf -fdebug-compilation-dir='.'
+
+ .text
+ .file "main.cpp"
+ .file 0 "." "main.cpp" md5 0xbb74a3c2960dafa324547ebbd87d13ea
+ .section .debug_info.dwo,"e", at progbits
+ .long .Ldebug_info_dwo_end0-.Ldebug_info_dwo_start0 # Length of Unit
+.Ldebug_info_dwo_start0:
+ .short 5 # DWARF version number
+ .byte 6 # DWARF Unit Type
+ .byte 8 # Address Size (in bytes)
+ .long 0 # Offset Into Abbrev. Section
+ .quad -8602855756067469281 # Type Signature
+ .long 33 # Type DIE Offset
+ .byte 1 # Abbrev [1] 0x18:0x1e DW_TAG_type_unit
+ .short 33 # DW_AT_language
+ .byte 1 # DW_AT_comp_dir
+ .byte 2 # DW_AT_dwo_name
+ .long 0 # DW_AT_stmt_list
+ .byte 2 # Abbrev [2] 0x21:0x10 DW_TAG_structure_type
+ .byte 5 # DW_AT_calling_convention
+ .byte 5 # DW_AT_name
+ .byte 4 # DW_AT_byte_size
+ .byte 0 # DW_AT_decl_file
+ .byte 1 # DW_AT_decl_line
+ .byte 3 # Abbrev [3] 0x27:0x9 DW_TAG_member
+ .byte 3 # DW_AT_name
+ .long 49 # DW_AT_type
+ .byte 0 # DW_AT_decl_file
+ .byte 2 # DW_AT_decl_line
+ .byte 0 # DW_AT_data_member_location
+ .byte 0 # End Of Children Mark
+ .byte 4 # Abbrev [4] 0x31:0x4 DW_TAG_base_type
+ .byte 4 # DW_AT_name
+ .byte 5 # DW_AT_encoding
+ .byte 4 # DW_AT_byte_size
+ .byte 0 # End Of Children Mark
+.Ldebug_info_dwo_end0:
+ .text
+ .globl main # -- Begin function main
+ .p2align 4, 0x90
+ .type main, at function
+main: # @main
+.Lfunc_begin0:
+ .loc 0 6 0 # main.cpp:6:0
+ .cfi_startproc
+# %bb.0: # %entry
+ pushq %rbp
+ .cfi_def_cfa_offset 16
+ .cfi_offset %rbp, -16
+ movq %rsp, %rbp
+ .cfi_def_cfa_register %rbp
+ movl $0, -4(%rbp)
+.Ltmp0:
+ .loc 0 7 3 prologue_end # main.cpp:7:3
+ xorl %eax, %eax
+ .loc 0 7 3 epilogue_begin is_stmt 0 # main.cpp:7:3
+ popq %rbp
+ .cfi_def_cfa %rsp, 8
+ retq
+.Ltmp1:
+.Lfunc_end0:
+ .size main, .Lfunc_end0-main
+ .cfi_endproc
+ # -- End function
+ .type globalSplit, at object # @globalSplit
+ .bss
+ .globl globalSplit
+ .p2align 2, 0x0
+globalSplit:
+ .zero 4
+ .size globalSplit, 4
+
+ .section .debug_abbrev,"", at progbits
+ .byte 1 # Abbreviation Code
+ .byte 74 # DW_TAG_skeleton_unit
+ .byte 0 # DW_CHILDREN_no
+ .byte 16 # DW_AT_stmt_list
+ .byte 23 # DW_FORM_sec_offset
+ .byte 114 # DW_AT_str_offsets_base
+ .byte 23 # DW_FORM_sec_offset
+ .byte 27 # DW_AT_comp_dir
+ .byte 37 # DW_FORM_strx1
+ .byte 118 # DW_AT_dwo_name
+ .byte 37 # DW_FORM_strx1
+ .byte 17 # DW_AT_low_pc
+ .byte 27 # DW_FORM_addrx
+ .byte 18 # DW_AT_high_pc
+ .byte 6 # DW_FORM_data4
+ .byte 115 # DW_AT_addr_base
+ .byte 23 # DW_FORM_sec_offset
+ .byte 0 # EOM(1)
+ .byte 0 # EOM(2)
+ .byte 0 # EOM(3)
+ .section .debug_info,"", at progbits
+.Lcu_begin0:
+ .long .Ldebug_info_end0-.Ldebug_info_start0 # Length of Unit
+.Ldebug_info_start0:
+ .short 5 # DWARF version number
+ .byte 4 # DWARF Unit Type
+ .byte 8 # Address Size (in bytes)
+ .long .debug_abbrev # Offset Into Abbrev. Section
+ .quad 5806847994123082226
+ .byte 1 # Abbrev [1] 0x14:0x14 DW_TAG_skeleton_unit
+ .long .Lline_table_start0 # DW_AT_stmt_list
+ .long .Lstr_offsets_base0 # DW_AT_str_offsets_base
+ .byte 0 # DW_AT_comp_dir
+ .byte 1 # DW_AT_dwo_name
+ .byte 1 # DW_AT_low_pc
+ .long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc
+ .long .Laddr_table_base0 # DW_AT_addr_base
+.Ldebug_info_end0:
+ .section .debug_str_offsets,"", at progbits
+ .long 12 # Length of String Offsets Set
+ .short 5
+ .short 0
+.Lstr_offsets_base0:
+ .section .debug_str,"MS", at progbits,1
+.Lskel_string0:
+ .asciz "." # string offset=0
+.Lskel_string1:
+ .asciz "ASplit" # string offset=2
+.Lskel_string2:
+ .asciz "int" # string offset=9
+.Lskel_string3:
+ .asciz "globalSplit" # string offset=13
+.Lskel_string4:
+ .asciz "main" # string offset=25
+.Lskel_string5:
+ .asciz "main.dwo" # string offset=30
+ .section .debug_str_offsets,"", at progbits
+ .long .Lskel_string0
+ .long .Lskel_string5
+ .section .debug_str_offsets.dwo,"e", at progbits
+ .long 40 # Length of String Offsets Set
+ .short 5
+ .short 0
+ .section .debug_str.dwo,"eMS", at progbits,1
+.Linfo_string0:
+ .asciz "globalSplit" # string offset=0
+.Linfo_string1:
+ .asciz "." # string offset=12
+.Linfo_string2:
+ .asciz "main.dwo" # string offset=14
+.Linfo_string3:
+ .asciz "x" # string offset=23
+.Linfo_string4:
+ .asciz "int" # string offset=25
+.Linfo_string5:
+ .asciz "ASplit" # string offset=29
+.Linfo_string6:
+ .asciz "main" # string offset=36
+.Linfo_string7:
+ .asciz "clang version 19.0.0git (git at github.com:llvm/llvm-project.git ced1fac8a32e35b63733bda27c7f5b9a2b635403)" # string offset=41
+.Linfo_string8:
+ .asciz "main.cpp" # string offset=145
+ .section .debug_str_offsets.dwo,"e", at progbits
+ .long 0
+ .long 12
+ .long 14
+ .long 23
+ .long 25
+ .long 29
+ .long 36
+ .long 41
+ .long 145
+ .section .debug_info.dwo,"e", at progbits
+ .long .Ldebug_info_dwo_end1-.Ldebug_info_dwo_start1 # Length of Unit
+.Ldebug_info_dwo_start1:
+ .short 5 # DWARF version number
+ .byte 5 # DWARF Unit Type
+ .byte 8 # Address Size (in bytes)
+ .long 0 # Offset Into Abbrev. Section
+ .quad 5806847994123082226
+ .byte 5 # Abbrev [5] 0x14:0x2e DW_TAG_compile_unit
+ .byte 7 # DW_AT_producer
+ .short 33 # DW_AT_language
+ .byte 8 # DW_AT_name
+ .byte 2 # DW_AT_dwo_name
+ .byte 6 # Abbrev [6] 0x1a:0xb DW_TAG_variable
+ .byte 0 # DW_AT_name
+ .long 37 # DW_AT_type
+ # DW_AT_external
+ .byte 0 # DW_AT_decl_file
+ .byte 5 # DW_AT_decl_line
+ .byte 2 # DW_AT_location
+ .byte 161
+ .byte 0
+ .byte 7 # Abbrev [7] 0x25:0x9 DW_TAG_structure_type
+ # DW_AT_declaration
+ .quad -8602855756067469281 # DW_AT_signature
+ .byte 8 # Abbrev [8] 0x2e:0xf DW_TAG_subprogram
+ .byte 1 # DW_AT_low_pc
+ .long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc
+ .byte 1 # DW_AT_frame_base
+ .byte 86
+ .byte 6 # DW_AT_name
+ .byte 0 # DW_AT_decl_file
+ .byte 6 # DW_AT_decl_line
+ .long 61 # DW_AT_type
+ # DW_AT_external
+ .byte 4 # Abbrev [4] 0x3d:0x4 DW_TAG_base_type
+ .byte 4 # DW_AT_name
+ .byte 5 # DW_AT_encoding
+ .byte 4 # DW_AT_byte_size
+ .byte 0 # End Of Children Mark
+.Ldebug_info_dwo_end1:
+ .section .debug_abbrev.dwo,"e", at progbits
+ .byte 1 # Abbreviation Code
+ .byte 65 # DW_TAG_type_unit
+ .byte 1 # DW_CHILDREN_yes
+ .byte 19 # DW_AT_language
+ .byte 5 # DW_FORM_data2
+ .byte 27 # DW_AT_comp_dir
+ .byte 37 # DW_FORM_strx1
+ .byte 118 # DW_AT_dwo_name
+ .byte 37 # DW_FORM_strx1
+ .byte 16 # DW_AT_stmt_list
+ .byte 23 # DW_FORM_sec_offset
+ .byte 0 # EOM(1)
+ .byte 0 # EOM(2)
+ .byte 2 # Abbreviation Code
+ .byte 19 # DW_TAG_structure_type
+ .byte 1 # DW_CHILDREN_yes
+ .byte 54 # DW_AT_calling_convention
+ .byte 11 # DW_FORM_data1
+ .byte 3 # DW_AT_name
+ .byte 37 # DW_FORM_strx1
+ .byte 11 # DW_AT_byte_size
+ .byte 11 # DW_FORM_data1
+ .byte 58 # DW_AT_decl_file
+ .byte 11 # DW_FORM_data1
+ .byte 59 # DW_AT_decl_line
+ .byte 11 # DW_FORM_data1
+ .byte 0 # EOM(1)
+ .byte 0 # EOM(2)
+ .byte 3 # Abbreviation Code
+ .byte 13 # DW_TAG_member
+ .byte 0 # DW_CHILDREN_no
+ .byte 3 # DW_AT_name
+ .byte 37 # DW_FORM_strx1
+ .byte 73 # DW_AT_type
+ .byte 19 # DW_FORM_ref4
+ .byte 58 # DW_AT_decl_file
+ .byte 11 # DW_FORM_data1
+ .byte 59 # DW_AT_decl_line
+ .byte 11 # DW_FORM_data1
+ .byte 56 # DW_AT_data_member_location
+ .byte 11 # DW_FORM_data1
+ .byte 0 # EOM(1)
+ .byte 0 # EOM(2)
+ .byte 4 # Abbreviation Code
+ .byte 36 # DW_TAG_base_type
+ .byte 0 # DW_CHILDREN_no
+ .byte 3 # DW_AT_name
+ .byte 37 # DW_FORM_strx1
+ .byte 62 # DW_AT_encoding
+ .byte 11 # DW_FORM_data1
+ .byte 11 # DW_AT_byte_size
+ .byte 11 # DW_FORM_data1
+ .byte 0 # EOM(1)
+ .byte 0 # EOM(2)
+ .byte 5 # Abbreviation Code
+ .byte 17 # DW_TAG_compile_unit
+ .byte 1 # DW_CHILDREN_yes
+ .byte 37 # DW_AT_producer
+ .byte 37 # DW_FORM_strx1
+ .byte 19 # DW_AT_language
+ .byte 5 # DW_FORM_data2
+ .byte 3 # DW_AT_name
+ .byte 37 # DW_FORM_strx1
+ .byte 118 # DW_AT_dwo_name
+ .byte 37 # DW_FORM_strx1
+ .byte 0 # EOM(1)
+ .byte 0 # EOM(2)
+ .byte 6 # Abbreviation Code
+ .byte 52 # DW_TAG_variable
+ .byte 0 # DW_CHILDREN_no
+ .byte 3 # DW_AT_name
+ .byte 37 # DW_FORM_strx1
+ .byte 73 # DW_AT_type
+ .byte 19 # DW_FORM_ref4
+ .byte 63 # DW_AT_external
+ .byte 25 # DW_FORM_flag_present
+ .byte 58 # DW_AT_decl_file
+ .byte 11 # DW_FORM_data1
+ .byte 59 # DW_AT_decl_line
+ .byte 11 # DW_FORM_data1
+ .byte 2 # DW_AT_location
+ .byte 24 # DW_FORM_exprloc
+ .byte 0 # EOM(1)
+ .byte 0 # EOM(2)
+ .byte 7 # Abbreviation Code
+ .byte 19 # DW_TAG_structure_type
+ .byte 0 # DW_CHILDREN_no
+ .byte 60 # DW_AT_declaration
+ .byte 25 # DW_FORM_flag_present
+ .byte 105 # DW_AT_signature
+ .byte 32 # DW_FORM_ref_sig8
+ .byte 0 # EOM(1)
+ .byte 0 # EOM(2)
+ .byte 8 # Abbreviation Code
+ .byte 46 # DW_TAG_subprogram
+ .byte 0 # DW_CHILDREN_no
+ .byte 17 # DW_AT_low_pc
+ .byte 27 # DW_FORM_addrx
+ .byte 18 # DW_AT_high_pc
+ .byte 6 # DW_FORM_data4
+ .byte 64 # DW_AT_frame_base
+ .byte 24 # DW_FORM_exprloc
+ .byte 3 # DW_AT_name
+ .byte 37 # DW_FORM_strx1
+ .byte 58 # DW_AT_decl_file
+ .byte 11 # DW_FORM_data1
+ .byte 59 # DW_AT_decl_line
+ .byte 11 # DW_FORM_data1
+ .byte 73 # DW_AT_type
+ .byte 19 # DW_FORM_ref4
+ .byte 63 # DW_AT_external
+ .byte 25 # DW_FORM_flag_present
+ .byte 0 # EOM(1)
+ .byte 0 # EOM(2)
+ .byte 0 # EOM(3)
+ .section .debug_line.dwo,"e", at progbits
+.Ltmp2:
+ .long .Ldebug_line_end0-.Ldebug_line_start0 # unit length
+.Ldebug_line_start0:
+ .short 5
+ .byte 8
+ .byte 0
+ .long .Lprologue_end0-.Lprologue_start0
+.Lprologue_start0:
+ .byte 1
+ .byte 1
+ .byte 1
+ .byte -5
+ .byte 14
+ .byte 1
+ .byte 1
+ .byte 1
+ .byte 8
+ .byte 1
+ .byte 46
+ .byte 0
+ .byte 3
+ .byte 1
+ .byte 8
+ .byte 2
+ .byte 15
+ .byte 5
+ .byte 30
+ .byte 1
+ .ascii "main.cpp"
+ .byte 0
+ .byte 0
+ .byte 0xbb, 0x74, 0xa3, 0xc2
+ .byte 0x96, 0x0d, 0xaf, 0xa3
+ .byte 0x24, 0x54, 0x7e, 0xbb
+ .byte 0xd8, 0x7d, 0x13, 0xea
+.Lprologue_end0:
+.Ldebug_line_end0:
+ .section .debug_addr,"", at progbits
+ .long .Ldebug_addr_end0-.Ldebug_addr_start0 # Length of contribution
+.Ldebug_addr_start0:
+ .short 5 # DWARF version number
+ .byte 8 # Address size
+ .byte 0 # Segment selector size
+.Laddr_table_base0:
+ .quad globalSplit
+ .quad .Lfunc_begin0
+.Ldebug_addr_end0:
+ .section .debug_names,"", at progbits
+ .long .Lnames_end0-.Lnames_start0 # Header: unit length
+.Lnames_start0:
+ .short 5 # Header: version
+ .short 0 # Header: padding
+ .long 1 # Header: compilation unit count
+ .long 0 # Header: local type unit count
+ .long 1 # Header: foreign type unit count
+ .long 4 # Header: bucket count
+ .long 4 # Header: name count
+ .long .Lnames_abbrev_end0-.Lnames_abbrev_start0 # Header: abbreviation table size
+ .long 8 # Header: augmentation string size
+ .ascii "LLVM0700" # Header: augmentation string
+ .long .Lcu_begin0 # Compilation unit 0
+ .quad -8602855756067469281 # Type unit 0
+ .long 1 # Bucket 0
+ .long 0 # Bucket 1
+ .long 2 # Bucket 2
+ .long 0 # Bucket 3
+ .long 193495088 # Hash in Bucket 0
+ .long 1785912162 # Hash in Bucket 2
+ .long 2090499946 # Hash in Bucket 2
+ .long -226250862 # Hash in Bucket 2
+ .long .Lskel_string2 # String in Bucket 0: int
+ .long .Lskel_string3 # String in Bucket 2: globalSplit
+ .long .Lskel_string4 # String in Bucket 2: main
+ .long .Lskel_string1 # String in Bucket 2: ASplit
+ .long .Lnames1-.Lnames_entries0 # Offset in Bucket 0
+ .long .Lnames2-.Lnames_entries0 # Offset in Bucket 2
+ .long .Lnames3-.Lnames_entries0 # Offset in Bucket 2
+ .long .Lnames0-.Lnames_entries0 # Offset in Bucket 2
+.Lnames_abbrev_start0:
+ .byte 1 # Abbrev code
+ .byte 36 # DW_TAG_base_type
+ .byte 2 # DW_IDX_type_unit
+ .byte 11 # DW_FORM_data1
+ .byte 3 # DW_IDX_die_offset
+ .byte 19 # DW_FORM_ref4
+ .byte 4 # DW_IDX_parent
+ .byte 25 # DW_FORM_flag_present
+ .byte 0 # End of abbrev
+ .byte 0 # End of abbrev
+ .byte 2 # Abbrev code
+ .byte 36 # DW_TAG_base_type
+ .byte 3 # DW_IDX_die_offset
+ .byte 19 # DW_FORM_ref4
+ .byte 4 # DW_IDX_parent
+ .byte 25 # DW_FORM_flag_present
+ .byte 0 # End of abbrev
+ .byte 0 # End of abbrev
+ .byte 3 # Abbrev code
+ .byte 52 # DW_TAG_variable
+ .byte 3 # DW_IDX_die_offset
+ .byte 19 # DW_FORM_ref4
+ .byte 4 # DW_IDX_parent
+ .byte 25 # DW_FORM_flag_present
+ .byte 0 # End of abbrev
+ .byte 0 # End of abbrev
+ .byte 4 # Abbrev code
+ .byte 46 # DW_TAG_subprogram
+ .byte 3 # DW_IDX_die_offset
+ .byte 19 # DW_FORM_ref4
+ .byte 4 # DW_IDX_parent
+ .byte 25 # DW_FORM_flag_present
+ .byte 0 # End of abbrev
+ .byte 0 # End of abbrev
+ .byte 5 # Abbrev code
+ .byte 19 # DW_TAG_structure_type
+ .byte 2 # DW_IDX_type_unit
+ .byte 11 # DW_FORM_data1
+ .byte 3 # DW_IDX_die_offset
+ .byte 19 # DW_FORM_ref4
+ .byte 4 # DW_IDX_parent
+ .byte 25 # DW_FORM_flag_present
+ .byte 0 # End of abbrev
+ .byte 0 # End of abbrev
+ .byte 6 # Abbrev code
+ .byte 19 # DW_TAG_structure_type
+ .byte 3 # DW_IDX_die_offset
+ .byte 19 # DW_FORM_ref4
+ .byte 4 # DW_IDX_parent
+ .byte 25 # DW_FORM_flag_present
+ .byte 0 # End of abbrev
+ .byte 0 # End of abbrev
+ .byte 0 # End of abbrev list
+.Lnames_abbrev_end0:
+.Lnames_entries0:
+.Lnames1:
+.L5:
+ .byte 1 # Abbreviation code
+ .byte 0 # DW_IDX_type_unit
+ .long 49 # DW_IDX_die_offset
+.L1: # DW_IDX_parent
+ .byte 2 # Abbreviation code
+ .long 61 # DW_IDX_die_offset
+ .byte 0 # DW_IDX_parent
+ # End of list: int
+.Lnames2:
+.L0:
+ .byte 3 # Abbreviation code
+ .long 26 # DW_IDX_die_offset
+ .byte 0 # DW_IDX_parent
+ # End of list: globalSplit
+.Lnames3:
+.L2:
+ .byte 4 # Abbreviation code
+ .long 46 # DW_IDX_die_offset
+ .byte 0 # DW_IDX_parent
+ # End of list: main
+.Lnames0:
+.L4:
+ .byte 5 # Abbreviation code
+ .byte 0 # DW_IDX_type_unit
+ .long 33 # DW_IDX_die_offset
+.L3: # DW_IDX_parent
+ .byte 6 # Abbreviation code
+ .long 37 # DW_IDX_die_offset
+ .byte 0 # DW_IDX_parent
+ # End of list: ASplit
+ .p2align 2, 0x0
+.Lnames_end0:
+ .ident "clang version 19.0.0git (git at github.com:llvm/llvm-project.git ced1fac8a32e35b63733bda27c7f5b9a2b635403)"
+ .section ".note.GNU-stack","", at progbits
+ .addrsig
+ .section .debug_line,"", at progbits
+.Lline_table_start0:
diff --git a/bolt/test/X86/dwarf5-df-main-debug-names-ftu-ltu-mix.test b/bolt/test/X86/dwarf5-df-main-debug-names-ftu-ltu-mix.test
new file mode 100644
index 00000000000000..8a8a4b118b8c03
--- /dev/null
+++ b/bolt/test/X86/dwarf5-df-main-debug-names-ftu-ltu-mix.test
@@ -0,0 +1,56 @@
+; RUN: rm -rf %t
+; RUN: mkdir %t
+; RUN: cd %t
+; RUN: llvm-mc -dwarf-version=5 -filetype=obj -triple x86_64-unknown-linux %p/Inputs/dwarf5-df-debug-names-ftu-ltu-mix-main.s \
+; RUN: -split-dwarf-file=main.dwo -o main.o
+; RUN: llvm-mc -dwarf-version=5 -filetype=obj -triple x86_64-unknown-linux %p/Inputs/dwarf5-debug-names-ftu-ltu-mix-helper.s -o helper.o
+; RUN: llvm-mc -dwarf-version=5 -filetype=obj -triple x86_64-unknown-linux %p/Inputs/dwarf5-debug-names-ftu-ltu-mix-helper1.s -o helper1.o
+; RUN: %clang %cflags -gdwarf-5 -gsplit-dwarf=split main.o helper.o helper1.o -o main.exe -fno-pic -no-pie
+; RUN: llvm-bolt main.exe -o main.exe.bolt --update-debug-sections --create-debug-names-section=true
+; RUN: llvm-dwarfdump --debug-names main.exe.bolt | FileCheck -check-prefix=BOLT %s
+
+;; Tests BOLT correctly sets foreign TU Index when there are local TUs.
+
+; BOLT: Compilation Unit offsets [
+; BOLT-NEXT: CU[0]: {{.+}}
+; BOLT-NEXT: CU[1]: {{.+}}
+; BOLT-NEXT: CU[2]: {{.+}}
+; BOLT-NEXT: ]
+; BOLT-NEXT: Local Type Unit offsets [
+; BOLT-NEXT: LocalTU[0]: {{.+}}
+; BOLT-NEXT: LocalTU[1]: {{.+}}
+; BOLT-NEXT: ]
+; BOLT-NEXT: Foreign Type Unit signatures [
+; BOLT-NEXT: ForeignTU[0]: 0x889c84450dac881f
+; BOLT-NEXT: ]
+; BOLT: Name 3 {
+; BOLT-NEXT: Hash: 0x6A05C500
+; BOLT-NEXT: String: {{.+}} "globalMono1"
+; BOLT-NEXT: Entry @ {{.+}} {
+; BOLT-NEXT: Abbrev: 0x5
+; BOLT-NEXT: Tag: DW_TAG_variable
+; BOLT-NEXT: DW_IDX_compile_unit: 0x02
+; BOLT-NEXT: DW_IDX_die_offset: 0x0000001e
+; BOLT-NEXT: }
+; BOLT-NEXT: }
+; BOLT: Name 6 {
+; BOLT-NEXT: Hash: 0xF283AF92
+; BOLT-NEXT: String: {{.+}} "ASplit"
+; BOLT-NEXT: Entry @ {{.+}} {
+; BOLT-NEXT: Abbrev: 0x7
+; BOLT-NEXT: Tag: DW_TAG_structure_type
+; BOLT-NEXT: DW_IDX_type_unit: 0x02
+; BOLT-NEXT: DW_IDX_compile_unit: 0x00
+; BOLT-NEXT: DW_IDX_die_offset: 0x00000021
+; BOLT-NEXT: }
+; BOLT-NEXT: }
+; BOLT: Name 7 {
+; BOLT-NEXT: Hash: 0xF17F51F
+; BOLT-NEXT: String: {{.+}} "AMono"
+; BOLT-NEXT: Entry @ {{.+}} {
+; BOLT-NEXT: Abbrev: 0x4
+; BOLT-NEXT: Tag: DW_TAG_structure_type
+; BOLT-NEXT: DW_IDX_type_unit: 0x00
+; BOLT-NEXT: DW_IDX_die_offset: 0x00000023
+; BOLT-NEXT: }
+; BOLT-NEXT: }
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