# REQUIRES: system-linux
# RUN: llvm-mc -dwarf-version=4 -filetype=obj -triple x86_64-unknown-linux %s -o %t.o
# RUN: %clang %cflags -gdwarf-4 %t.o -o %t.exe
# RUN: llvm-bolt %t.exe -o %t.bolt --update-debug-sections
# RUN: llvm-dwarfdump --show-form --verbose --debug-info %t.bolt | FileCheck --check-prefix=POSTCHECK %s
## This test checks that BOLT handles DW_AT_sibling.
## The assembly was manually modified to do cross CU reference.
# POSTCHECK: version = 0x0004
# POSTCHECK: DW_TAG_structure_type [5]
# POSTCHECK: DW_AT_sibling [DW_FORM_ref4] (cu + 0x0062 => {0x00000062})
# POSTCHECK-EMPTY:
# POSTCHECK-NEXT: DW_TAG_typedef [6]
# POSTCHECK-NEXT: DW_AT_type [DW_FORM_ref4] (cu + 0x0059 => {0x00000059} "structure ")
# typedef struct
# {
# unsigned a;
# unsigned b;
# } S;
#
# int main() {
# S s;
# s.a = 0x64A40101;
# }
.text
.file "main.cpp"
.globl main # -- Begin function main
.p2align 4, 0x90
.type main,@function
main: # @main
.Lfunc_begin0:
.file 1 "/dwarf4-sibling-test" "main.cpp"
.loc 1 7 0 # main.cpp:7:0
.cfi_startproc
# %bb.0:
pushq %rbp
.cfi_def_cfa_offset 16
.cfi_offset %rbp, -16
movq %rsp, %rbp
.cfi_def_cfa_register %rbp
.Ltmp0:
.loc 1 9 7 prologue_end # main.cpp:9:7
movl $1688469761, -8(%rbp) # imm = 0x64A40101
.loc 1 10 1 # main.cpp:10:1
xorl %eax, %eax
.loc 1 10 1 epilogue_begin is_stmt 0 # main.cpp:10:1
popq %rbp
.cfi_def_cfa %rsp, 8
retq
.Ltmp1:
.Lfunc_end0:
.size main, .Lfunc_end0-main
.cfi_endproc
# -- End function
.section .debug_abbrev,"",@progbits
.byte 1 # Abbreviation Code
.byte 17 # DW_TAG_compile_unit
.byte 1 # DW_CHILDREN_yes
.byte 37 # DW_AT_producer
.byte 14 # DW_FORM_strp
.byte 19 # DW_AT_language
.byte 5 # DW_FORM_data2
.byte 3 # DW_AT_name
.byte 14 # DW_FORM_strp
.byte 16 # DW_AT_stmt_list
.byte 23 # DW_FORM_sec_offset
.byte 27 # DW_AT_comp_dir
.byte 14 # DW_FORM_strp
.byte 17 # DW_AT_low_pc
.byte 1 # DW_FORM_addr
.byte 18 # DW_AT_high_pc
.byte 6 # DW_FORM_data4
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 2 # Abbreviation Code
.byte 46 # DW_TAG_subprogram
.byte 1 # DW_CHILDREN_yes
.byte 17 # DW_AT_low_pc
.byte 1 # DW_FORM_addr
.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 14 # DW_FORM_strp
.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 3 # Abbreviation Code
.byte 52 # DW_TAG_variable
.byte 0 # DW_CHILDREN_no
.byte 2 # DW_AT_location
.byte 24 # DW_FORM_exprloc
.byte 3 # DW_AT_name
.byte 14 # DW_FORM_strp
.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 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 14 # DW_FORM_strp
.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 22 # DW_TAG_typedef
.byte 0 # DW_CHILDREN_no
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 3 # DW_AT_name
.byte 14 # DW_FORM_strp
.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 6 # 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 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 1 # DW_AT_sibling <-- manually added
.byte 19 # DW_FORM_ref4
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 7 # Abbreviation Code
.byte 13 # DW_TAG_member
.byte 0 # DW_CHILDREN_no
.byte 3 # DW_AT_name
.byte 14 # DW_FORM_strp
.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 0 # EOM(3)
.section .debug_info,"",@progbits
.Lcu_begin0:
.long .Ldebug_info_end0-.Ldebug_info_start0 # Length of Unit
.Ldebug_info_start0:
.short 4 # DWARF version number
.long .debug_abbrev # Offset Into Abbrev. Section
.byte 8 # Address Size (in bytes)
.byte 1 # Abbrev [1] 0xb:0x7f DW_TAG_compile_unit
.long .Linfo_string0 # DW_AT_producer
.short 33 # DW_AT_language
.long .Linfo_string1 # DW_AT_name
.long .Lline_table_start0 # DW_AT_stmt_list
.long .Linfo_string2 # DW_AT_comp_dir
.quad .Lfunc_begin0 # DW_AT_low_pc
.long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc
.byte 2 # Abbrev [2] 0x2a:0x28 DW_TAG_subprogram
.quad .Lfunc_begin0 # DW_AT_low_pc
.long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc
.byte 1 # DW_AT_frame_base
.byte 86
.long .Linfo_string3 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 7 # DW_AT_decl_line
.long 82 # DW_AT_type
# DW_AT_external
.byte 3 # Abbrev [3] 0x43:0xe DW_TAG_variable
.byte 2 # DW_AT_location
.byte 145
.byte 120
.long .Linfo_string5 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 8 # DW_AT_decl_line
.long 89 # DW_AT_type
.byte 0 # End Of Children Mark
.byte 4 # Abbrev [4] 0x52:0x7 DW_TAG_base_type
.long .Linfo_string4 # DW_AT_name
.byte 5 # DW_AT_encoding
.byte 4 # DW_AT_byte_size
.Linfo_structured_type:
.byte 6 # Abbrev [6] 0x64:0x1e DW_TAG_structure_type
.byte 5 # DW_AT_calling_convention
.byte 8 # DW_AT_byte_size
.byte 1 # DW_AT_decl_file
.byte 1 # DW_AT_decl_line
.long .Linfo_sibling # DW_AT_sibling <-- Manually added
.Linfo_sibling:
.byte 5 # Abbrev [5] 0x59:0xb DW_TAG_typedef
.long .Linfo_structured_type # DW_AT_type <-- Manually modified
.long .Linfo_string9 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 5 # DW_AT_decl_line
.byte 7 # Abbrev [7] 0x69:0xc DW_TAG_member
.long .Linfo_string6 # DW_AT_name
.long .Linfo_base_type # DW_AT_type
.byte 1 # DW_AT_decl_file
.byte 3 # DW_AT_decl_line
.byte 0 # DW_AT_data_member_location
.byte 7 # Abbrev [7] 0x75:0xc DW_TAG_member
.long .Linfo_string8 # DW_AT_name
.long .Linfo_base_type # DW_AT_type
.byte 1 # DW_AT_decl_file
.byte 4 # DW_AT_decl_line
.byte 4 # DW_AT_data_member_location
.byte 0 # End Of Children Mark
.Linfo_base_type:
.byte 4 # Abbrev [4] 0x82:0x7 DW_TAG_base_type
.long .Linfo_string7 # DW_AT_name
.byte 7 # DW_AT_encoding
.byte 4 # DW_AT_byte_size
.byte 0 # End Of Children Mark
.Ldebug_info_end0:
.section .debug_str,"MS",@progbits,1
.Linfo_string0:
.asciz "clang version 15.0.0" # string offset=0
.Linfo_string1:
.asciz "main.cpp" # string offset=146
.Linfo_string2:
.asciz "/dwarf4-sibling-test" # string offset=155
.Linfo_string3:
.asciz "main" # string offset=213
.Linfo_string4:
.asciz "int" # string offset=218
.Linfo_string5:
.asciz "s" # string offset=222
.Linfo_string6:
.asciz "a" # string offset=224
.Linfo_string7:
.asciz "unsigned int" # string offset=226
.Linfo_string8:
.asciz "b" # string offset=239
.Linfo_string9:
.asciz "S" # string offset=241
.ident "clang version 15.0.0"
.section ".note.GNU-stack","",@progbits
.addrsig
.section .debug_line,"",@progbits
.Lline_table_start0:
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